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Cisco 300-115

Implementing Cisco IP Switched Networks
Version: 10.0
Cisco 300-115 Exam
Topic 1, Layer 2 Technologies

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Exam A
QUESTION 1
What is the maximum number of switches that can be stacked using Cisco StackWise?
A.
B.
C.
D.
E.
F.

4
5
8
9
10
13

Correct Answer: D
Section: (none)
Explanation
Explanation/Reference:
Explanation:
Up to 9 Cisco Catalyst switches can be stacked together to build single logical StackWise switch since Cisco IOS XE Release 3.3.0SE. Prior to Cisco IOS XE
Release3.3.0SE, up to 4 Cisco Catalyst switches could be stacked together.
Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series- switches/qa_c67-722110.html
QUESTION 2
A network engineer wants to add a new switch to an existing switch stack. Which configuration must be added to the new switch before it can be added to the
switch stack?
A.
B.
C.
D.
E.

No configuration must be added.
stack ID
IP address
VLAN information
VTP information

Correct Answer: A
Section: (none)
Explanation
Explanation/Reference:

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Explanation:
Switch Stack Offline Configuration
You can use the offline configuration feature to provision (to supply a configuration to) a new switch before it joins the switch stack. You can configure in advance
the stack member number,
the switch type, and the interfaces associated with a switch that is not currently part of the stack. The configuration that you create on the switch stack is called the
provisioned configuration . The switch that is added to the switch stack and that receives this configuration is called the provisioned switch.
You manually create the provisioned configuration through the switch stack-member-number provision type global configuration command. The provisioned
configuration is automatically created when a switch is added to a switch stack and when no provisioned configuration exists. When you configure the interfaces
associated with a provisioned switch (for example, as part of a VLAN), the switch stack accepts the configuration, and the information appears in the running
configuration. The interface associated with the provisioned switch is not active, operates as if it is administratively shut down, and the no shutdown interface
configuration command does not return it to active service. The interface associated with the provisioned switch does not appear in the display of the specific
feature; for example, it does not appear in the show vlan user EXEC command output.
The switch stack retains the provisioned configuration in the running configuration whether or not the provisioned switch is part of the stack. You can save the
provisioned configuration to the startup configuration file by entering the copy running-config startup-config privileged EXEC command. The startup configuration file
ensures that the switch stack can reload and can use the saved information whether or not the provisioned switch is part of the switch stack. Effects of Adding a
Provisioned Switch to a Switch Stack When you add a provisioned switch to the switch stack, the stack applies either the provisioned configuration or the default
configuration. Table 5-1 lists the events that occur when the switch stack compares the provisioned configuration with the provisioned switch.
Table 5-1 Results of Comparing the Provisioned Configuration with the Provisioned Switch Scenario
Result
The stack member numbers and the switch types match.

If the stack member number of the provisioned switch matches the stack member number in the

provisioned configuration on the stack, and
2.
If the switch type of the provisioned switch matches the switch type in the provisioned configuration on the stack.
The switch stack applies the provisioned configuration to the provisioned switch and adds it to the

The stack member numbers match but the switch types do not match.
1.

If the stack member number of the provisioned switch matches the stack member number in the provisioned configuration on the stack, but

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2.
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The switch type of the provisioned switch does not match the switch type in the provisioned configuration on the stack.
Cisco 300-115 Exam
The switch stack applies the default configuration to the provisioned switch and adds it to the stack.
The provisioned configuration is changed to reflect the new information. The stack member number is not found in the provisioned configuration.
The switch stack applies the default configuration to the provisioned switch and adds it to the stack.
The provisioned configuration is changed to reflect the new information. The stack member number of the provisioned switch is in conflict with an existing stack
member. The stack master assigns a new stack member number to the provisioned switch.
The stack member numbers and the switch types match:

If the new stack member number of the provisioned switch matches the stack member number in

the provisioned configuration on the stack, and
2.
If the switch type of the provisioned switch matches the switch type in the provisioned configuration on the stack.
The switch stack applies the provisioned configuration to the provisioned switch and adds it to the stack.

The stack member numbers match, but the switch types do not match:
1.

If the stack member number of the provisioned switch matches the stack member number in the provisioned configuration on the stack, but
2.
The switch type of the provisioned switch does not match the switch type in the provisioned configuration on the stack.
The switch stack applies the default configuration to the provisioned switch and adds it to the stack.
The provisioned configuration is changed to reflect the new information. The stack member number of the provisioned switch is not found in the provisioned
configuration.
The switch stack applies the default configuration to the provisioned switch and adds it to the stack.
Reference:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12- 2_55_se/configuration/guide/3750xscg/swstack.html
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C.exam.com/ A. 0 25 50 75 100 Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Physical Sequential Linkage The switches are physically connected sequentially. Cisco StackWise Technology Resilient Cabling http://www. D.Cisco 300-115 Exam QUESTION 3 What percentage of bandwidth is reduced when a stack cable is broken? http://www. Figure 3. Subsecond timing mechanisms detect traffic problems and immediately institute failover. A break in any one of the cables will result in the stack bandwidth being reduced to half of its full capacity.exam. This mechanism restores dual path flow when the timing mechanisms detect renewed activity on the cable. B. E. as shown in Figure 3.com .

com/c/en/us/products/collateral/switches/catalyst-3750-series.com/ http://www.switches/prod_white_paper09186a00801b096a.cisco.exam.exam.www. Any Time. "Pass Any Exam.com 5 Cisco 300-115 Exam http://www." .html QUESTION 4 Refer to the exhibit.actualtests.Reference: http://www.com .

desirable Places an interface into an active negotiating state. This setting minimizes the transmission of PAgP packets." . switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. in which the interface starts negotiations with other interfaces by sending PAgP packets. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode passive C. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto B.exam. in which the interface responds to PAgP packets it receives but does not start PAgP packet negotiation.com 6 Cisco 300-115 Exam The different etherchannel modes are described in the table below: Mode Description active Places an interface into an active negotiating state.www. Any Time. auto Places an interface into a passive negotiating state. in which the interface starts negotiations with other interfaces by sending LACP packets.Which set of configurations will result in all ports on both switches successfully bundling into an EtherChannel? A.actualtests.com . on http://www. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto D.

exam.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12.com . http://www.cisco. ·An interface in the auto mode can form an EtherChannel with another interface in the desirable mode. Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10.Forces the interface into an EtherChannel without PAgP or LACP. Reference: http://www.com 7 Cisco 300-115 Exam QUESTION 5 Refer to the exhibit. for Layer 2 EtherChannels. Any Time.html "Pass Any Exam.1_13_ea1/configuration/guide/3550scg/swethchl. but does not start LACP packet negotiation. For example: ·An interface in the desirable mode can form an EtherChannel with another interface that is in the desirable or auto mode. trunking state and VLAN numbers. With the on mode. in which the interface responds to LACP packets that it receives. Both the auto and desirable PAgP modes allow interfaces to negotiate with partner interfaces to determine if they can form an EtherChannel based on criteria such as interface speed and. passive Places an interface into a passive negotiating state. This setting minimizes the transmission of LACP packets. Interfaces can form an EtherChannel when they are in different PAgP modes as long as the modes are compatible. An interface in the on mode that is added to a port channel is forced to have the same characteristics as the already existing on mode interfaces in the channel." . An interface in the auto mode cannot form an EtherChannel with another interface that is also in the auto mode because neither interface starts PAgP negotiation. How can the traffic that is mirrored out the GigabitEthernet0/48 port be limited to only traffic that is received or transmitted in VLAN 10 on the GigabitEthernet0/1 port? A.www. a usable EtherChannel exists only when an interface group in the on mode is connected to another interface group in the on mode.actualtests.

D.www. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session.exam. | -] options. VLAN monitoring and VLAN filtering are mutually exclusive. Reference: http://www. Change the monitor session source to VLAN 10 instead of the physical interface. Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10. Usage Guidelines You can set a combined maximum of two local SPAN sessions and RSPAN source sessions. http://www.cisco. C. You select a series or range of VLANs by using the [ . If a VLAN is a source.B. or to limit (filter) SPAN source traffic to specific VLANs.html#wp38 75419997 QUESTION 6 Refer to the exhibit.actualtests. If VLAN filtering is configured. you must enter a space before and after the comma. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack. By default.com/ http://www.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_ma nagement/command_reference/b_nm_3se_3850_cr/ b_nm_3se_3850_cr_chapter_010. Any Time. VLAN filtering "Pass Any Exam.com . all VLANs are monitored on trunk source ports. You can use the monitor session session_number filter vlan vlan-id command to limit SPAN traffic on trunk source ports to only the specified VLANs.com 8 Cisco 300-115 Exam cannot be enabled. use the monitor session filter global configuration command." . VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports. If you specify a range of VLANs. you must enter a space before and after the hyphen ( -). If you specify a series of VLANs. Apply the monitor session filter globally to allow only traffic from VLAN 10. You can monitor traffic on a single VLAN or on a series or range of ports or VLANs.exam. a VLAN cannot become a source.

B.www.exam. D. RSPAN supports source ports. SPAN copies (or mirrors) traffic received or sent (or both) on source ports or source VLANs to a destination port for analysis.) A. source VLANs.actualtests.com 9 Cisco 300-115 Exam You can analyze network traffic passing through ports or VLANs by using SPAN or RSPAN to send a copy of the traffic to another port on the switch or on another switch that has been connected to a network analyzer or other monitoring or security device. The traffic for each RSPAN session is carried over a user-specified RSPAN http://www. A monitor session on the distribution switch with a physical interface as the source and the remote SPAN VLAN as the destination A remote SPAN VLAN on the distribution and access layer switch A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination A monitor session on the access switch with a remote SPAN VLAN source and the physical interface as the destination A monitor session on the distribution switch with a physical interface as the source and a physical interface as the destination Correct Answer: BCD Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam." .com . C. enabling remote monitoring of multiple switches across your network. E. F.A network engineer wants to analyze all incoming and outgoing packets for an interface that is connected to an access switch. Which three items must be configured to mirror traffic to a packet sniffer that is connected to the distribution switch? (Choose three. and destination ports on different switches (or different switch stacks). Any Time.

This mode is not supported when the EtherChannel members are from different switches in the switch stack (cross-stack EtherChannel).html QUESTION 7 After an EtherChannel is configured between two Cisco switches. You can not mix the LACP and PAGP protocols to form an etherchannel. The destination is always a physical port. The RSPAN traffic from the source ports or VLANs is copied into the RSPAN VLAN and forwarded over trunk ports carrying the RSPAN VLAN to a destination session monitoring the RSPAN VLAN. Switch A is configured with channel-group 1 mode active. which is an LACP mode.www. This mode is not supported when the EtherChannel members are from different switches in the switch stack (cross-stack EtherChannel). LACP priority must be configured on both switches. Each RSPAN source switch must have either ports or VLANs as RSPAN sources.com 10 Cisco 300-115 Exam PagP packets. interface port channel 1 is in the down/down state. and the other is using desirable. The switches are using mismatched EtherChannel negotiation modes. Why is the EtherChannel bundle not working? A.2_55_se/configuration/guide/3750xscg/swspan.cisco. Any Time. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Here we have a situation where one switch is using active mode. in which the port starts negotiations with other ports by sending PagP packets. which is a PAGP mode. in which the port responds to PagP packets it receives but does not start PagP packet negotiation. B.VLAN that is dedicated for that RSPAN session in all participating switches.com .exam. C. while Switch B is configured with channel-group 1 mode desirable. Reference: http://www." . The channel group identifier must be different for Switch A and Switch B.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12. http://www. This setting minimizes the transmission of "Pass Any Exam. Here is a summary of the various etherchannel modes: EtherChannel PagP Modes Mode Description auto Places a port into a passive negotiating state. The switch ports are not configured in trunking mode. Desirable Places a port into an active negotiating state. D.actualtests.

B.exam.com . Passive Places a port into a passive negotiating state in which the port responds to LACP packets that it receives. Reference: http://www. Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle.www." . C. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle. Any Time. Adjust the EtherChannel load-balancing method based on destination IP addresses.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12. D. E.EtherChannel LACP Modes Mode Description active Places a port into an active negotiating state in which the port starts negotiations with other ports by sending LACP packets.exam. Correct Answer: E Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam.actualtests. This setting minimizes the transmission of LACP packets. Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server.com/ A.html QUESTION 8 An EtherChannel bundle has been established between a Cisco switch and a corporate web server.cisco. The network administrator noticed that only one of the EtherChannel links is being utilized to reach the web server.com 11 Cisco 300-115 Exam http://www. What should be done on the Cisco switch to allow for better EtherChannel utilization to the corporate web server? http://www.2_55_se/configuration/guide/scg_2960/swethchl. but does not start LACP packet negotiation. Adjust the EtherChannel load-balancing method based on source IP addresses.

2/25ew/configuration/guide/conf/span. but it has several routing neighbor relationships. and either source mode.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12. E. C. since all traffic is going to the same web server). Reference: http://www. 9 Reference: http://www.com . This command is configured globally: monitor session 2 filter vlan 1 8. This example shows how to monitor VLANs 1 through 5 and VLAN 9 when the SPAN source is a trunk interface: Switch(config)# monitor session 2 filter vlan 1 5 . The trunk's native VLAN must be changed to something other than VLAN 1. destination mode. Use of source addresses or IP addresses can result in a better load balance. IP addresses.com 12 Cisco 300-115 Exam QUESTION 10 A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. 39. Traffic from VLAN 4 is not sent to the SPAN destination interface. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs. Any Time.html QUESTION 9 Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs.html#wp1066836 "Pass Any Exam. use of the destination MAC address results in the choice of the same link in the channel each time. For example. or Layer 4 port numbers. D. if the traffic on a channel only goes to a single MAC address (which is the case in this example.cisco. 52 What is the result of the implemented command? A.exam. Traffic from VLANs 1 to 8. The mode you select applies to all EtherChannels that you configure on the switch. 39. or both.www. The engineer notices only a single neighbor that uses Cisco Discovery Protocol.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. Use the option that provides the greatest variety in your configuration. What would cause the output to show only the single neighbor? http://www. Correct Answer: E Section: (none) Explanation Explanation/Reference: Explanation: The "monitor session filter" command is used to specify which VLANS are to be port mirrored using SPAN. B.EtherChannel load balancing can use MAC addresses.actualtests. All VLAN traffic is sent to the SPAN destination interface." . and 52 is replicated to the SPAN destination port.html/index.

C. C.org/wiki/Link_Layer_Discovery_Protocol http://www. Any Time. such as the Cisco Discovery Protocol (CDP). Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices. QUESTION 11 After the implementation of several different types of switches from different vendors. The routers are connected via a Layer 2 switch. but not necessarily the logical topology." . D.www. Which vendor-neutral protocol could be used to resolve this issue? A. B.com . Local Area Mobility Link Layer Discovery Protocol NetFlow Directed Response Protocol Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity. D.actualtests. LLDP performs functions similar to several proprietary protocols. then each router will only have the single switch port that it connects to as its neighbor. Even though multiple routing neighbors can be formed over a layer 2 network.wikipedia.com 13 Cisco 300-115 Exam Reference: http://en. principally wired Ethernet. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: If all of the routers are connected to each other using a layer 2 switch. CDP can be used to determine the physical topology. B. and neighbors on an IEEE 802 local area network. a network engineer notices that directly connected devices that use Cisco Discovery Protocol are not visible. Cisco Express Forwarding is enabled locally. "Pass Any Exam.exam.A. IP routing is disabled on neighboring devices. capabilities. only the physical port that it connects to will be seen as a CDP neighbor.

D. All of the new switches have been configured with the same VTP domain. CISCO and cisco are two different domain names. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: VTP allows switches to advertise VLAN information between other members of the same VTP domain. C. What should be configured for extended VLANs? A. the extended VLANs are not being propagated to other VTP switches. ·One of the switches must be the VTP server in a VTP domain.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613.cisco. VTP allows a consistent view of the switched network across all switches. Enable VTP version 3. C. Make sure that all ports that interconnect switches are configured as trunks and are actually trunking. make sure that the password is the same on both sides. Make sure that if EtherChannels are created between two switches.com 14 Cisco 300-115 Exam QUESTION 13 After implementing VTP. ·The VTP domain name must match and it is case sensitive. What must be done to fix this? A. Verify these items if switches that run VTP fail to exchange VLAN information: ·VTP information only passes through a trunk port. If any password is set. only Layer 2 EtherChannels propagate VLAN information. http://www. VTP authentication is required when using extended VLANs because of their ability to cause network instability.exam. Any Time. However. which supports extended VLAN propagation. password. Remove the VTP domain name from all switches with "null" and then replace it with the new domain name.QUESTION 12 Several new switches have been added to the existing network as VTP clients. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use. Reference: http://www. VLANs are not passing from the VTP server (existing network) to the VTP clients.shtml "Pass Any Exam. There are several reasons why the VLAN information can fail to be exchanged. and version.actualtests.com . Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred." . B.www. Ensure that all switches run the same Cisco IOS version. All VLAN changes must be done on this switch in order to have them propagated to the VTP clients. Configure a different native VLAN on all new switches that are configured as VTP clients. ·Make sure that the VLANs are active in all the devices. Provision one of the new switches to be the VTP server and duplicate information from the existing network. D. B. VTP does not support extended VLANs and should be manually added to all switches. ·Make sure that no password is set between the server and client.

but Switch B does not receive any VLAN information.www. The VTP revision number of the Switch B is higher than that of Switch A. Switch B is configured with an access port to Switch A. You must configure extended-range VLANs manually on each network device.com/en/US/docs/switches/lan/catalyst6500/ios/15. while Switch C is configured with a trunk port to Switch B.com .Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: · VTP version 1 and VTP version 2 do not propagate configuration information for extended-range VLANs (VLAN numbers 1006 to 4094). B. B.1SY/config_guide/sup2T/vtp.cisco. If you convert from VTP version 3 to VTP version 2. Any Time. C. and C are trunked together and have been properly configured for VTP. Switch B is configured in transparent mode." .exam. D. http://www. "Pass Any Exam. What is the most probable cause of this behavior? A. Switch C receives VLAN information from the VTP server Switch A.actualtests. Reference: http://www. the VLANs in the range 1006 to 4094 are removed from VTP control.pd f QUESTION 14 Refer to the exhibit. The trunk between Switch A and Switch B is misconfigured. · VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094).com 15 Cisco 300-115 Exam Switch A.

com 16 Cisco 300-115 Exam D. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2. What would cause this issue? A. Switch B has all VLANs. A VTP authentication mismatch occurred between Switch A and Switch B. Correct Answer: C Section: (none) Explanation http://www. and C are trunked together and have been properly configured for VTP. C. but Switch C is not receiving traffic from certain VLANs. Reference: http://www. B.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: VTP transparent switches do not participate in VTP.com . A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements. The trunk between Switch A and Switch B is misconfigured. Switch A. VTP pruning is configured globally on all switches and it removed VLANs from the trunk interface that is connected to Switch C.cisco.actualtests. B.shtml QUESTION 15 Refer to the exhibit. "Pass Any Exam. Any Time.www. The VTP revision number of Switch B is higher than that of Switch A." .exam.

The port roles have been adjusted based on the interface bandwidth and timers of the new Cisco Catalyst switches. VTP pruning blocks unneeded flooded traffic to VLANs on trunk ports that are included in the pruningeligible list.exam. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: RSTP works by adding an alternative port and a backup port compared to STP.actualtests.Explanation/Reference: Explanation: VTP pruning increases network available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to reach the destination devices. QUESTION 16 After the recent upgrade of the switching infrastructure. the network engineer notices that the port roles that were once "blocking" are now defined as "alternate" and "backup. D.com 17 Cisco 300-115 Exam (collision domain). This path is different than using the root port." .com . a network administrator can manually disable a port http://www. * Disabled port Not strictly part of STP. The alternative port moves to the forwarding state if there is a failure on the designated port for the segment. RSTP bridge port roles: * Root port A forwarding port that is the closest to the root bridge in terms of path cost * Designated port A forwarding port for every LAN segment * Alternate port A best alternate path to the root bridge. Without VTP pruning. * Backup port A backup/redundant path to a segment where another bridge port already connects. B. These ports are allowed to immediately enter the forwarding state rather than passively wait for the network to converge. Any Time. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. a switch floods broadcast.1D STP and PortFast have been configured by default on all newly implemented Cisco Catalyst switches. The administrator has defined the switch as the root in the STP domain. The new switches are using RSTP instead of legacy IEEE 802." What is the reason for this change? A. The backup port applies only when a single switch has two links to the same segment "Pass Any Exam. IEEE 802. VTP pruning is disabled by default. To have two links to the same collision domain. the switch must be attached to a hub.1D STP. is that VTP pruning has been configured. The best explanation for why switch C is not seeing traffic from only some of the VLANs. C.www. multicast.

RSTP has been enabled per interface and not globally.com 18 Cisco 300-115 Exam B.protocol/24062-146. PBR Correct Answer: C Section: (none) Explanation Explanation/Reference: http://www. DTP in nonegotiate C. access lists "Pass Any Exam.com . This makes them candidates for rapid transition to the forwarding state. while a half-duplex port is considered as a shared port by default. D.actualtests.html QUESTION 17 An administrator recently configured all ports for rapid transition using PortFast. C. What is the reason for this? A. VTP pruning D.Reference: http://www.cisco. In switched networks today.com/c/en/us/support/docs/lan-switching/spanning-tree. Any Time.com/c/en/us/support/docs/lan-switching/spanning-tree. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: RSTP can only achieve rapid transition to the forwarding state on edge ports and on point-to-point links. Reference: http://www. The link type is automatically derived from the duplex mode of a port. The switch does not have the processing power to ensure rapid transition for all ports.protocol/24062-146.exam. The STP root bridge selection is forcing key ports to remain in non-rapid transitioning mode. B. After testing.html QUESTION 18 Which technique automatically limits VLAN traffic to only the switches that require it? A. not on trunk links.cisco.www. it has been determined that several ports are not transitioning as they should." . A port that operates in full-duplex is assumed to be point-to-point. most links operate in full-duplex mode and are treated as point-to-point links by RSTP. STP is unable to achieve rapid transition for trunk links. This automatic link type setting can be overridden by explicit configuration.

D. the default is 300 seconds. Entering the value 0 disables the MAC aging. the aging specification applies to all VLANs.table? A. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: You can configure the amount of time that an entry (the packet source MAC address and port that packet ingresses) remain in the MAC table. unknown.Explanation: VTP pruning enhances network bandwidth use by reducing unnecessary flooded traffic. B.actualtests. VTP pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to access the appropriate network devices.www.cisco. This is how long a dynamic MAC address will remain in the CAM table. E. http://www. VTP pruning is disabled. Reference: http://www. C. "Pass Any Exam.com . Any Time.exam. and flooded unicast packets to only the switches that require it. The MAC address-table will be flushed every 3 minutes. If a VLAN is not specified. To configure the aging time for all MAC addresses.com 19 Cisco 300-115 Exam Step 2 switch(config)# mac-address-table aging-time seconds [vlan vlan_id] Specifies the time before an entry ages out and is discarded from the MAC address table. The range is from 0 to 1000000." . such as broadcast. The default timeout period will be 360 seconds. By default.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/book/vtp. multicast. ARP requests will be processed less frequently by the switch.html#wp1020444 QUESTION 19 What effect does the mac address-table aging-time 180 command have on the MAC address. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes. perform this task: Command Purpose Step 1 switch# configure terminal Enters configuration mode.

com . However. or a broadcast storm. Reference: http://packetlife. We can configure the switch to "Pass Any Exam. E. Any Time. The SDM template is causing the CPU http://www. manual intervention by an administrator is necessary to restore the interface to working order. assess. and (ideally) correct the issue. This gives the offending issue a chance to be cleared by the user (for example. and a steady recurrence of these can amount to a huge time sink for the administrative staff.exam. This is where errdisable autorecovery can be of great assistance.cisco. As designed. The idea behind requiring administrative action is so that a human engineer can intercede. the link was placed into a non-forwarding state due to a fault with UDLD. D. by removing an unapproved device) without the need for administrative intervention.www. B. such as the detection of a loopback. the link did not recover.com 20 Cisco 300-115 Exam automatically re-enable any error-disabled interfaces after a specified timeout period.actualtests. By default.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/C LIConfigurationGuide/MACAddress. a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. What solution allows the network switch to automatically recover from such an issue? A. UDLD failure. macros errdisable autorecovery IP Event Dampening command aliases Bidirectional Forwarding Detection Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: There are a number of events which can disable a link on a Catalyst switch. some configurations may be prone to accidental violations. this can be done by issuing shutdown followed by no shutdown on the interface.This example shows how to set the aging time for entries in the MAC address table to 600 seconds (10 minutes): switch# configure terminal switch(config)# mac-address-table aging-time 600 Reference: http://www.html#wp1126206 QUESTION 20 While working in the core network building. C. After the damaged cable was replaced.net/blog/2009/sep/14/errdisable-autorecovery/ QUESTION 21 A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template." .

of the switch to spike during peak working hours. Any Time.www.com/ A. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: SDM Template Notes: Choosing the VLAN template will actually disable routing (number of entry for unicast or multicast route is zero) in hardware. Reference: http://www. VLAN filters are required to ensure traffic mirrors effectively. SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic. C. B.com 21 Cisco 300-115 Exam Correct Answer: C http://www. What is a cause for this issue? A. D. What is the root cause of this issue? http://www. The VLAN template disables routing in hardware. After configuring SPAN to monitor this port. the network administrator notices that not all traffic is being replicated to the management server.exam.com/c/en/us/support/docs/switches/catalyst-3750-series. C. The VLAN receives additional frames from neighboring switches.html QUESTION 22 An access switch has been configured with an EtherChannel port. D." . The SDM VLAN template causes the MAC address-table to overflow. "Pass Any Exam.exam. but not a destination. The port channel can be used as a SPAN source. The switch needs to be rebooted before the SDM template takes effect.cisco. RSPAN must be used to capture EtherChannel bidirectional traffic.com .actualtests. B.switches/44921-swdatabase-3750ss-44921.

You can configure ports or EtherChannels in any VLAN as SPAN sources. What is the result of the configuration? http://www. but not a destination. Trunk ports or EtherChannels can be configured as sources and mixed with nontrunk sources.Section: (none) Explanation Explanation/Reference: Explanation: A source port or EtherChannel is a port or EtherChannel monitored for traffic analysis. A port-channel interface (an EtherChannel) can be a SPAN source.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/book/span. Reference: http://www.cisco.exam. SPAN can monitor one or more source ports or EtherChannels in a single SPAN session.com .html#wp1040905 QUESTION 23 Refer to the exhibit. You can configure both Layer 2 and Layer 3 ports and EtherChannels as SPAN sources.

C. B.actualtests. D. Any Time. The EtherChannels would form and both devices would use the dst-ip load-balancing method because Switch1 is configured with EtherChannel mode active.com/ A.www.exam." .com . The table below sum-marizes the results for LACP channel establishment based on the configuration of each side of a link: LACP Channel Establishment S1 S2 Established? On On Yes Active/Passive Active Yes On/Active/Passive Not Configured No On http://www. but network loops would occur because the load-balancing "Pass Any Exam. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: An etherchannel will form if one end is active and the other is passive. The EtherChannels would form and function properly even though the load-balancing and EtherChannel modes do not match.exam.http://www. The EtherChannels would not form because the load-balancing method must match on the devices.com 22 Cisco 300-115 Exam methods do not match. The EtherChannels would form.

those ports will be dropped from the EtherChannel interface (put in suspended state). The storm control configuration will be accepted. The storm control settings will appear on the EtherChannel. any configuration that you apply to the port-channel interface affects the EtherChannel.cisco. Reference: http://www. For example. Storm Control must be configured on all or none of the ports. This is true for the switch globally. PagP. you cannot configure Storm Control on some of the members of an EtherChannel. What is the result of the configuration? A. The settings will be applied to the EtherChannel bundle and all associated physical interfaces. D. Storm Control is an exception to this rule. all channels (manually configured.2/31sg/configuration/guide/conf/channel.com/c/en/us/td/docs/switches/lan/catalyst4500/12. If you configure Storm Control on only some of the ports." . but will only be present on the physical interfaces. Any Time.com/c/en/us/td/docs/switches/lan/catalyst4500/12.2/54sg/configuration/guide/config/channel. forward traffic simultaneously using both supervisors http://www. you should configure Storm Control at the EtherChannel Interface level.cisco.exam. any configuration that you apply to the physical interfaces affects only the interface where you apply the configuration. C.com 23 Cisco 300-115 Exam A network engineer tries to configure storm control on an EtherChannel bundle. Reference: http://www. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: After you configure an EtherChannel.com . although each switch involved in the etherchannel can have non matching parameters for load balancing.actualtests.html QUESTION 25 What is the function of NSF? A. The configuration will be rejected because storm control is not supported for EtherChannel. B. As a result. and not at the physical interface level. but not on the associated physical ports.Active No Passive/On Passive No Load balancing can only be configured globally.html#wp1020804 QUESTION 24 "Pass Any Exam. or LACP) use the same load-balancing.www. Therefore.

com 24 Cisco 300-115 Exam a single logical virtual switch called a virtual switching system 1440 (VSS1440). D. combining for an active 1400-Gbps switching capacity per VSS. increasing operational efficiency. Switches would operate as "Pass Any Exam. the data plane and switch fabric with capacity of 720 Gbps of supervisor engine in each chassis are active at the same time on both chassis.com/article-cisco-catalyst-6500-series-vss-1440. Which option describes what causes the port to go into the errdisable state? A.124536783. VSS formed by two Cisco Catalyst 6500 Series Switches with the Virtual Switching Supervisor 720-10GE.over-blog. Normal UDLD operations that prevent traffic loops.com . provide automatic failover to back up supervisor in VSS mode D. In a VSS.html QUESTION 26 After UDLD is implemented. Any Time. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: http://www. a Network Administrator noticed that one port stops receiving UDLD packets.actualtests.www. Reference: http://ciscorouterswitch.4 Tbps. B. UDLD is enabled globally. Both chassis are kept in sync with the inter-chassis Stateful Switchover (SSO) mechanism along with Nonstop Forwarding (NSF) to provide nonstop communication even in the event of failure of one of the member supervisor engines or chassis. boosting nonstop communications.exam. provide nonstop forwarding in the event of failure of one of the member supervisors Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: VSS is network system virtualization technology that pools multiple Cisco Catalyst 6500 Series Switches into one virtual switch. UDLD timers are inconsistent." . and scaling system bandwidth capacity to 1. C. Only one of the virtual switch members has the active control plane. The port then transitions into the errdisable state. This port continues to reestablish until after eight failed retries. forward traffic based on Cisco Express Forwarding C.B. UDLD port is configured in aggressive mode.

or individually on specific interfaces with the command udld port." Which statement describes what this indicates about the status of the port? http://www. Reference: http://packetlife. The port will remain operational during this time.net/blog/2011/mar/7/udld/ QUESTION 28 http://www.With UDLD aggressive mode enabled. C. Reference: http://www. We can enable UDLD globally on the device. so when UDLD is first enabled and does not detect a neighbor the link state is considered unknown. The bidirectional status of "unknown" indicates that the port will go into the disabled state because it stopped receiving UDLD packets from its neighbor.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. UDLD moved into aggressive mode after inconsistent acknowledgements were detected. when a port on a bidirectional link that has a UDLD neighbor relationship established stops receiving UDLD packets. an engineer notices that the. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: By default.exam. This enables UDLD in normal mode.com . D. It would be prohibitively difficult to coordinate the configuration of UDLD on both ends of a link at the same time. When UDLD is finally enabled on the other end. which is not necessarily an error condition. B. UDLD is disabled on all interfaces. The port is fully operational and no known issues are detected.html QUESTION 27 After reviewing UDLD status on switch ports. the port is disabled.cisco. After eight failed retries.exam.com/ A. UDLD tries to reestablish the connection with the neighbor. the status will transition to bidirectional. The UDLD port is placed in the "unknown" state for 5 seconds until the next UDLD packet is received on the interface.2SX/configuration/guide/book/udld.

2_55_se/configuration/guide/scg_2960/swstpopt. port-priority cost forward-timers link type root guard http://www. E.cisco. Reference: http://www. you can accelerate the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. C.Pilot testing of the new switching infrastructure finds that when the root port is lost. E. except for self.exam.looping ports.actualtests. an uplink group consists of the root port (which is forwarding) and a set of blocked ports." . STP immediately replaces the root port with an alternative root port.www. B. Specifically. F.) A.html QUESTION 29 A network engineer must adjust the STP interface attributes to influence root port selection. UplinkFast provides fast convergence after a direct link failure and achieves load balancing between redundant Layer 2 links using uplink groups.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12. Any Time. C.com . D. An uplink group is a set of Layer 2 interfaces (per VLAN). Which two elements are used to accomplish this? (Choose two. The uplink group provides an alternate path in case the currently forwarding link fails. By enabling UplinkFast with the spanning-tree uplinkfast global configuration command. D. The root port transitions to the forwarding state immediately without going through the listening and learning states. PVST+ PortFast BackboneFast UplinkFast Loop Guard UDLD Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: I f a switch loses connectivity. Which spanning-tree technology is used to accomplish backup root port selection? A. only one of which is forwarding at any given time. as it would with the normal spanning-tree procedures.com 26 Cisco 300-115 Exam selects a new root port. B. it begins using the alternate paths as soon as the spanning tree "Pass Any Exam.

B.html QUESTION 30 A network engineer must set the load balance method on an existing port channel.com 27 Cisco 300-115 Exam well it is located to pass traffic. port priority. The switches do not forward these frames but use them to construct a loop-free path.www. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Example: EtherChannel balances the traffic load across the links in a channel through the reduction of part of the binary pattern that the addresses in the frame form to a numerical value that selects one of the links in the channel. the spanning-tree port priority and path cost settings control which port is put in the forwarding state and which is put in the blocking state. If a network segment in the spanning tree fails and a redundant path exists. Which action must be done to apply a new load balancing method? A. Ensure that IP CEF is enabled globally to support all load balancing methods. source or destination http://www. called bridge protocol data units (BPDUs). the spanningtree algorithm recalculates the spanning-tree topology and activates the standby path. The path cost value represents the media speed. Any Time. including switch and MAC addresses. EtherChannel load balancing can use MAC addresses or IP addresses.exam. Configure the new load balancing method using port-channel load-balance. The spanning-tree port priority value represents the location of a port in the network topology and how "Pass Any Exam.com . C.2_55_se/configuration/guide/3750xscg/swstp. Adjust the switch SDM back to "default". When two ports on a switch are part of a loop.actualtests. switch priority. BPDUs contain information about the sending switch and its ports. at regular intervals. and path cost. Reference: http://www. Switches send and receive spanning-tree frames. Upgrade the PFC to support the latest load balancing methods." .com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12.cisco. Spanning tree uses this information to elect the root switch and root port for the switched network and the root port and designated port for each switched segment.Correct Answer: AB Section: (none) Explanation Explanation/Reference: Explanation: Spanning tree forces redundant data paths into a standby (blocked) state. D.

What is causing the line protocol on this interface to be shown as down? A." . "Pass Any Exam. E. C. D. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: http://www. B.exam.www. There is a layer 1 physical issue. or both source and destination addresses.com 28 Cisco 300-115 Exam A network engineer investigates a recent network failure and notices that one of the interfaces on the switch is still down.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html QUESTION 31 Refer to the exhibit. Any Time. Reference: http://www.actualtests. There is a speed mismatch on the interface. You configure the load balancing and forwarding method with use of the port-channel load-balance {dst-ip | dst-mac | src-dst-ip | src-dst-mac | src-ip | src-mac} global configuration command. The interface is configured as the target of the SPAN session.com . The interface is configured as the source of the SPAN session. The mode applies to all EtherChannels that are configured on the switch.addresses. There is a duplex mismatch on the interface.

Reference: http://www. the state of the destination port is up/down by design. C.exam. B. it is found that rapid error tracking is not currently enabled. which is used to track down errors and minimize costly downtime. This version is mainly used for backward compatibility. · CDP Version 2 -. trunk allowed VLANs http://www.cisco. Cisco Discovery Protocol version 2 Cisco IOS Embedded Event Manager logging buffered Cisco Discovery Protocol source interface Cisco Discovery Protocol logging options "Pass Any Exam. This is the normal operational state for SPAN destinations. shtml QUESTION 32 While doing network discovery using Cisco Discovery Protocol. Reference: http://sbkb. VTP pruning B.com . transparent bridging C. The interface shows the port in this state in order to make it evident that the port is currently not usable as a production port." . D.This is the first version of CDP which was used for the discovery of Cisco devices in the network.With the SAPN destination port.cisco. It allows you to track instances even if the native VLAN ID or port duplex states do not match between connecting devices. Which option must be enabled to allow for enhanced reporting mechanisms using Cisco Discovery Protocol? A.com/CiscoSB/GetArticle.www.This is the most recent version of CDP which has enhanced features such as rapid reporting mechanism. This is the default version on all switches.xml&pid=2&converted=0 QUESTION 33 Which technique allows specific VLANs to be strictly permitted by the administrator? A.com 29 Cisco 300-115 Exam Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: · CDP Version 1 -.aspx?docid=0ed03cbac49b446ab390a657917d817c_Ci sco_Discovery_Protocol_CDP__Properties_Settings_on_Sx500_S.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612. Any Time. E.actualtests.

Apply BPDU guard and BPDU filter." . configure "switchport nonegotiate. Correct Answer: AB Section: (none) Explanation Explanation/Reference: Explanation: The Dynamic Trunking Protocol (DTP) is used to negotiate forming a trunk between two Cisco devices. C. otherwise the link will be a non-trunking link.D. preventing traffic from those VLANs from passing over the trunk. and is enabled by default. To disable DTP. 1 to 4094. However.com/en/US/docs/switches/lan/catalyst3550/software/release/12. use the "switchport trunk allowed vlan remove vlan-list" interface configuration command to remove specific VLANs from the allowed list. DTP causes increased traffic. Disable DTP on a per interface basis. are allowed on each trunk. but may be disabled. D. To restrict the traffic a trunk carries." This prevents the interface from generating DTP frames. the IT manager has prohibited users from dynamically establishing trunks with their associated upstream switch. All VLAN IDs. Any Time. Configure trunk and access interfaces manually.actualtests. VLAN access-list E.com 30 Cisco 300-115 Exam For security reasons.com . Reference: http://www. You can use this command only when the interface switchport mode is access or trunk.exam. http://www. L2P tunneling Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: By default.1_13_ea1/config uration/guide/swvlan. B. Enable switchport block on access ports. a trunk port sends traffic to and receives traffic from all VLANs.www. Which two actions can prevent interface trunking? (Choose two.html QUESTION 34 "Pass Any Exam. You must manually configure the neighboring interface as a trunk interface to establish a trunk link.cisco.) A. you can remove VLANs from the allowed list.

F. D. Any Time.) A.com 31 Cisco 300-115 Exam QUESTION 36 A network is running VTPv2.57313/Dynamic%20Trunking%20Protocol. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command.asp?p=2181837&seqNum=8 QUESTION 35 Which two protocols can be automatically negotiated between switches for trunking? (Choose two. the network engineer notices that the new switch is not receiving the list of VLANs from the server.com . C. Which action resolves this problem? A. PPP DTP ISL HDLC DLCI DOT1Q Correct Answer: CF Section: (none) Explanation Explanation/Reference: Explanation: Switches such as the Catalyst 3550 that are capable of either 802.com/servlet/JiveServlet/previewBody/14792-102-1. Verify connected trunk ports.1Q or ISL trunking encapsulation. After verifying all VTP settings.Reference: http://www. Reload the new switch. B.actualtests.com/articles/article. E.PDF "Pass Any Exam.www.cisco. D.exam. Restart the VTP process on the new switch.ciscopress. B. Correct Answer: D Section: (none) Explanation http://www. Reference: https://learningnetwork." . C. Reload the VTP server.

When hidden. QUESTION 37 After configuring new data VLANs 1020 through 1030 on the VTP server. The first thing that should be done is to verify that the trunk ports are connected and up. it takes up to 4 hours propagate. The VTP server must be reloaded. VTP "Pass Any Exam. you can directly configure the password secret key.exam.actualtests. If extended VLANs are configured.www. you cannot convert from VTP version 3 to version 1 or 2." . After each update to the VTP server. VTP must be stopped and restarted on the server. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: VTP version 3 supports these features that are not supported in version 1 or version 2: ·Enhanced authentication--You can configure the authentication as hidden or secret. the key associated with the password is saved in hexadecimal format in the running configuration.cisco. ·Support for extended range VLAN (VLANs 1006 to 4094) database propagation. Any Time.com/en/US/docs/switches/lan/catalyst3560/software/release/12. Another switch in the domain has a higher revision number than the server.Explanation/Reference: Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. a network engineer notices that none of the VTP clients are receiving the updates. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? http://www. D. What is the problem? A. Reference: http://www. the secret key from the password string is saved in the VLAN database file. B. but it does not appear in plain text in the configuration.com .html#wp1316856 QUESTION 38 A network engineer is extending a LAN segment between two geographically separated data centers. The VTP version number must be set to version 3. Instead. When you enter the secret keyword.com 32 Cisco 300-115 Exam versions 1 and 2 propagate only VLANs 1 to 1005.2_52_se/configur ation/guide/swvtp. C. You must reenter the password if you enter a takeover command in the domain. E.

30 is issued.A.shtml QUESTION 39 The network manager has requested that several new VLANs (VLAN 10. Reference: http://www. What is the root cause of the "Pass Any Exam. · VTP pruning--Avoid this method if the goal is to reduce the number of STP instances. Correct Answer: A Section: (none) Explanation Explanation/Reference: http://www." . VTP pruning removed all unused VLANs. The command effectively removed all other working VLANs and replaced them with the new VLANs. D. Instead. and 30) are allowed to traverse the switch trunk interface. VTP-pruned VLANs do not reduce the number of spanning tree port instances.www. C. Use VTP pruning on the trunk interfaces. D.20. After the command switchport trunk allowed vlan 10. Create a Layer 3 transit VLAN to segment the traffic between the sites. Modify the spanning-tree priorities to dictate the traffic flow. Allowing additional VLANs across the trunk introduced a loop in the network. the method runs the pruned VLAN on trunks. Configure manual trunk pruning between the two locations.pruned VLANs on a trunk are still part of the spanning tree. C. B. VTP.exam. Any Time. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Pruning unnecessary VLANs from the trunk can be performed with one of two methods: · Manual pruning of the unnecessary VLAN on the trunk--This is the best method.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613.com 33 Cisco 300-115 Exam problem? A. Since the question asked for the choice that is an enhancement to the STP design. ISL was unable to encapsulate more than the already permitted VLANs across the trunk. 20.cisco.com . VTP pruning is the best choice. all other existing VLANs no longer pass traffic over the trunk. and it avoids the use of the spanning tree. Therefore. B.actualtests.

com/document/11836/how-define-vlans-allowed-trunk-link QUESTION 40 When you design a switched network using VTPv2. Reference: http://cciememo." .actualtests. 1000 1001 1024 2048 4095 4096 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: VTP versions 1 and 2 Supports normal VLAN numbers (1-1001).Explanation: The "switchport trunk allowed vlan" command will only allow the specified VLANs. how many VLANs can be used to carry user traffic? http://www.blogspot. C.com 34 Cisco 300-115 Exam http://www.exam.www. Reference: https://supportforums. B.com . E.com/ A.html "Pass Any Exam.cisco. Any Time. or use the "issue the switchport trunk allowed vlan add vlan-list" command instead to add these 3 VLANS to the other defined allowed VLANs.com/2012/11/difference-between-vtp-versions. F. D. and overwrite any others that were previously defined. Only VTP version 3 supports extended VLANs (1-4095).exam. You would also need to explicitly allow the other working VLANs to this configuration command.

except when the native VLAN is set to 1. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s). Control traffic is tagged. All frames within the native VLAN are tagged.com . IRDP LLDP NDP LLTD Correct Answer: B Section: (none) Explanation Explanation/Reference: http://www. QUESTION 42 A network engineer has just deployed a non-Cisco device in the network and wants to get information about it from a connected device.com/ A. so the open standard protocol must be configured.exam. B. Which protocol does the network engineer configure on both devices to accomplish this? A. B.exam. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: The "vlan dot1q tag native" will tag all untagged frames. C. D. including control traffic. C. D.QUESTION 41 What does the command vlan dot1q tag native accomplish when configured under global configuration? http://www. with the defined native VLAN. It allows control traffic to pass using the non-default VLAN. Cisco Discovery Protocol is not supported.

and neighbors on an IEEE 802 local area network. To restrict the traffic that a trInk carries. VLANs 1 through 1005 are allowed on each trunk by default. capabilities.com ." .exam.actualtests. LLDP performs functions similar to several proprietary protocols. Any Time. Reference: http://en. the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state.com 35 Cisco 300-115 Exam QUESTION 43 A manager tells the network engineer to permit only certain VLANs across a specific trunk interface. Which option can be configured to accomplish this? A. This removes specific VLANs from the allowed list. perform these steps: 1.com/document/11836/how-define-vlans-allowed-trunk-link QUESTION 44 For client server failover purposes. they require the switchport to enter a forwarding state immediately. such as the Cisco Discovery Protocol (CDP).www. issue the switchport trunk vlan-Iist interface configuration command. This keeps traffic from the VLANs from passing over the trunk link. D. VLAN traffic can be removed from the allowed list.org/wiki/Link_Layer_Discovery_Protocol "Pass Any Exam. C. However.wikipedia. principally wired Ethernet.cisco. For their disaster recovery feature to operate successfully. Which spanningtree feature satisfies this requirement? A.Explanation: The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity. Note: The allowed VLAN list on both the ends of the trunk link should be the same. all of the configured VLANs are allowed to send and receive traffic across the link. Rapid Spanning-Tree http://www. B. allowed VLAN list VTP pruning VACL L2P tunneling Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: When a trunk link is established. For Integrated Cisco IOS Software based switches. Reference: https://supportforums.

informit. D.B.exam." .actualtests.aspx?b=CCNP_Studies_Switching&seqNum=36 QUESTION 45 Which command does a network engineer use to verify the spanning-tree status for VLAN 10? A. C.com 36 Cisco 300-115 Exam In order to allow immediate transition of the port into forwarding state. enable the STP PortFast feature. PortFast immediately transitions the port into STP forwarding mode upon linkup.www. C. D.com/library/content. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 . The port still participates in STP. Spanning-Tree Timers Spanning-Tree FastPort Spanning-Tree PortFast Spanning-Tree Fast Forward Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. B. E. the port eventually transitions into STP blocking mode. So if the port is to be a part of the loop.24 Switch-C(config-if-range)# spnning-tree portfast Reference: http://www. E.com . switch# show spanning-tree vlan 10 switch# show spanning-tree bridge switch# show spanning-tree brief switch# show spanning-tree summary switch# show spanning-tree vlan 10 brief Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: http://www. Any Time.

Command
Description
show spanning-tree
Displays information about the spanning-tree state.
Example output:
SW2#show spanning-tree vlan 10
VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 24586
Address 0014.f2d2.4180
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Cisco 300-115 Exam
Cost 9
Port 216 (Port-channel21)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10) Address 001c.57d8.9000
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------- Po21 Root FWD 9 128.216 P2p
Po23 Altn BLK 9 128.232 P2p
Reference: http://www.cisco.com/en/US/docs/ios/lanswitch/command/reference/lsw_s2.html
QUESTION 46
A new network that consists of several switches has been connected together via trunking interfaces. If all switches currently have the default VTP domain name
"null", which statement describes what happens when"a do"ain name is configured on one of the switches?
A.
B.
C.
D.

The switch with the non-default domain name restores back to "null" upon reboot.
Switches with higher revisio" num"ers does not accept the new domain name.
VTP summary advertisements are sent out of all ports with the new domain name.
All other switches with the default domain name become VTP clients.

Correct Answer: C

http://www.exam.com

Section: (none)
Explanation
Explanation/Reference:
Explanation:
By default, a switch will have a domain name of NULL and no password. If the switch hears a VTP advertisement it will automatically learn the VTP domain name,
VLANs, and the configuration revision number.
Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database. Contained in a summary advertisement:
·VTP version
·Domain name
·Configuration revision number
·Time stamp
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Cisco 300-115 Exam
·MD5 encryption hash code
Reference: https://rowell.dionicio.net/configuring-cisco-vtp/
QUESTION 47
A network engineer is setting up a new switched network. The network is expected to grow and add many new VLANs in the future. Which Spanning Tree Protocol
should be used to reduce switch resources and managerial burdens that are associated with multiple spanning-tree instances?
A.
B.
C.
D.
E.

RSTP
PVST
MST
PVST+
RPVST+

Correct Answer: C
Section: (none)
Explanation
Explanation/Reference:
Explanation:
Multiple Spanning Tree (MST) extends the IEEE 802.1w RST algorithm to multiple spanning trees. The main purpose of MST is to reduce the total number of
spanning-tree instances to match the physical topology of the network and thus reduce the CPU cycles of a switch. PVRST+ runs STP instances for each VLAN
and does not take into consideration the physical topology that might not require many different STP topologies. MST, on the other hand, uses a minimum number
http://www.exam.com

of STP instances to match the number of physical topologies present. Figure 3-15 shows a common network design, featuring an access Switch A, connected to
two Building Distribution submodule Switches D1 and D2. In this setup, there are 1000 VLANs, and the network administrator typically seeks to achieve load
balancing on the access switch uplinks based on even or odd VLANs--or any other scheme deemed appropriate.

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Cisco 300-115 Exam
Figure 3-15: VLAN Load Balancing
Figure 3-15 illustrates two links and 1000 VLANs. The 1000 VLANs map to two MST instances. Rather than maintaining 1000 spanning trees, each switch needs to
maintain only two spanning trees, reducing the need for switch resources.
Reference: http://ciscodocuments.blogspot.com/2011/05/chapter-03-implementing-spanning- tree_19.html
QUESTION 48
Which statement about the use of SDM templates in a Cisco switch is true?
A. SDM templates are used to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the
network.
B. SDM templates are used to create Layer 3 interfaces (switch virtual interfaces) to permit hosts in one VLAN to communicate with hosts in another VLAN.
C. SDM templates are used to configure ACLs that protect networks and specific hosts from unnecessary or unwanted traffic.
D. SDM templates are used to configure a set of ACLs that allows the users to manage the flow of traffic handled by the route processor.
E. SDM templates are configured by accessing the switch using the web interface.
Correct Answer: A
Section: (none)
Explanation
Explanation/Reference:
Explanation:

http://www.exam.com

You can use SDM templates to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the
network. You can select a template to provide maximum system usage for some functions; for example, use the default template to balance resources, and use
access template to obtain maximum ACL usage. To allocate hardware resources for different usages, the switch SDM templates prioritize system resources to
optimize support for certain features.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.2_55_se /configuration/guide/swsdm.pdf
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Cisco 300-115 Exam
QUESTION 49
Which SDM template disables routing and supports the maximum number of unicast MAC addresses?
A.
B.
C.
D.

VLAN
access
default
routing

Correct Answer: A
Section: (none)
Explanation
Explanation/Reference:
Explanation:
To allocate ternary content addressable memory (TCAM) resources for different usages, the switch SDM templates prioritize system resources to optimize support
for certain features. You can select SDM templates to optimize these features:
· Access--The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs.
· Default--The default template gives balance to all functions. · Routing--The routing template maximizes system resources for Ipv4 unicast routing, typically
required for a router or aggregator in the center of a network. · VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC
addresses. It would typically be selected for a Layer 2 switch.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_55_se/configur ation/guide/swsdm.pdf
QUESTION 50
Which SDM template is the most appropriate for a Layer 2 switch that provides connectivity to a large number of clients?
A. VLAN

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the switch SDM templates prioritize system resources to optimize support for certain features. B. routing Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. 100 seconds 180 seconds 300 seconds 600 seconds Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: To configure the aging time for all MAC addresses. Any Time.com 41 Cisco 300-115 Exam To allocate ternary content addressable memory (TCAM) resources for different usages. access D. You can select SDM templates to optimize these features: · Access--The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs.com/en/US/docs/switches/lan/catalyst3560/software/release/12. C. what is the default period of time after which a MAC address ages out and is discarded? A. · Routing--The routing template maximizes system resources for Ipv4 unicast routing.2_55_se/configur ation/guide/swsdm. typically required for a router or aggregator in the center of a network. perform this task: http://www. D. Reference: http://www.pdf QUESTION 51 In a Cisco switch.com .cisco.B. default C. It would typically be selected for a Layer 2 switch." .actualtests. · VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC addresses (clients).www. · Default--The default template gives balance to all functions.exam.

Entering the value 0 disables the MAC "Pass Any Exam. A new MAC address is added to the content-addressable memory. Any Time.exam.cisco. the aging specification applies to all VLANs. To disable MAC-move notification. D. Syslog (Optional) Specifies the syslogging facility when the MAC-move notification detects the first instance of the MAC move. C.html QUESTION 52 If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port. Step 2 switch(config)# mac-address-table aging-time seconds [vlan vlan_id] Specifies the time before an entry ages out and is discarded from the MAC address table. B.Command Purpose Step 1 switch# configure terminal Enters configuration mode. A new MAC address is removed from the content-addressable memory.com 42 Cisco 300-115 Exam aging. More than 64 MAC addresses are added to the content-addressable memory.actualtests. If a VLAN is not specified. http://www. Reference: http://www. use the no form of this command.www. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: mac-address-table notification mac-move To enable MAC-move notification. the default is 300 seconds.com . A MAC address or host moves between different switch ports. when is a syslog message generated? A." .com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/MAC Address. Mac-address-table notification mac-move [counter [syslog]] no mac-address-table notification mac-move [counter [syslog]] Syntax Description counter (Optional) Specifies the MAC-move counter feature. use the mac-address-table notification mac-move command in global configuration mode. The range is from 0 to 1000000.

exam.html "Pass Any Exam. Any Time. routing loop cable unplugged STP loop guard security violation Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: There are various reasons for the interface to go into errdisable. C.Usage Guidelines MAC-move notification generates a syslog message whenever a MAC address or host moves between different switch ports. B.actualtests.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b. B.cisco. The reason can be: Reference: http://www.www. Reference: http://www.cisco. 30 seconds 100 seconds 43sernads 600 seconds Correct Answer: C Section: (none) Explanation http://www.shtml QUESTION 54 What is the default value for the errdisable recovery interval in a Cisco switch? A.com 43 Cisco 300-115 Exam QUESTION 53 Which option is a possible cause for an errdisabled interface? A. D. D.com .com/en/US/docs/ios/lanswitch/command/reference/lsw_m1." . C.

The errdisable recovery command allows you to choose the type of errors that automatically reenable the ports after a specified amount of time.com .exam. cat6knative#show errdisable recovery ErrDisable Reason Timer Status ----------------.actualtests. Reference: http://www." .cisco. The show errdisable recovery command shows the default error-disable recovery state for all the possible conditions.-------------"Pass Any Exam. In this case. Issue the shutdown command and then the no shutdown interface mode command on the associated interface in order to manually reenable the ports.Explanation/Reference: Explanation: After you fix the root problem. Any Time. the ports are still disabled if you have not configured errdisable recovery on the switch. the timeout feature is disabled.com 44 Cisco 300-115 Exam udld Disabled bpduguard Disabled security-violatio Disabled channel-misconfig Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled mac-limit Disabled unicast-flood Disabled arp-inspection Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Note: The default timeout interval is 300 seconds and.www. http://www.shtml QUESTION 55 Which statement about LLDP-MED is true? A. LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices. by default.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b. you must reenable the ports manually.

Each device broadcasts periodic advertisements to all of its neighbors. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC.www.exam. Each device sends periodic advertisements to a central device that builds the network topology.B. D. LLDP-MED is an extension to LLDP that operates only between network devices." . Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Cisco devices send periodic CDP announcements to the multicast destination address 01-00-0c. Any Time. network policy.cisco. B.pdf QUESTION 56 Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true? A.com 45 Cisco 300-115 Exam support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery. http://www. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: LLDP for Media Endpoint Devices (LLDP-MED) is an extension to LLDP that operates between endpoint devices such as IP phones and network devices such as switches. It specifically provides "Pass Any Exam. and inventory management. C. Power over Ethernet. C.cc-cc-cc.com . Each device sends periodic advertisements to all IP addresses in its ARP table. These multicast packets may be received by Cisco switches and other networking devices that support CDP into their connected network interface. LLDP-MED is an extension to LLDP that operates only between endpoint devices.com/en/US/docs/switches/metro/me3400/software/release/12. Reference: http://www.actualtests. out each connected network interface. LLDP-MED is an extension to LLDP that operates between routers that run BGP.2_58_se/configurat ion/guide/swlldp. D.

php?id=cdp QUESTION 57 Which option lists the information that is contained in a Cisco Discovery Protocol advertisement? A. a switch. D. memory errors Correct Answer: A Section: (none) Explanation Explanation/Reference: "Pass Any Exam. Capabilities TLV Describes the functional capability for the device in the form of a device type." . hardware platform port-duplex.net/subdom/network/index. B. Table 21 Type-Length-Value Definitions for CDPv2 TLV Definition Device-ID TLV Identifies the device name in the form of a character string.actualtests. hardware platform native VLAN IDs.com .www. Version TLV Contains information about the software release version on which the device is running. Port-ID TLV Identifies the port on which the CDP packet is sent. Table 21 summarizes the TLV definitions for CDP advertisements. Eth 1/0. C. for example. Platform TLV Describes the hardware platform name of the device. IP Network Prefix TLV Contains a list of network prefixes to which the sending device can forward IP packets. Address TLV Contains a list of network addresses of both receiving and sending devices.Reference: http://network. hardware platform. This information is in the form of the interface protocol and port number.com 46 Cisco 300-115 Exam Explanation: Type-Length-Value fields (TLVs) are blocks of information embedded in CDP advertisements. memory errors. http://www. for example. for example.spravcesite. memory errors native VLAN IDs. port-duplex. Cisco 4500. Any Time.exam. port-duplex. native VLAN IDs.

Used by network operators to verify VTP domain configuration in adjacent network nodes. This feature is implemented only for interfaces that support the IEEE 802." .www.com . D. Native VLAN TLV Indicates.exam. LLDP does not support TLVs.html QUESTION 58 Which option describes a limitation of LLDP? "Pass Any Exam.VTP Management Domain TLV Advertises the system's configured VTP management domain name-string. per interface. B. LLDP cannot provide information about VTP.cisco.1Q protocol. Any Time.actualtests. CDP learns the native VLAN for an interface. the assumed VLAN for untagged packets on the interface. C. LLDP can discover only Windows servers. Reference: http://www. Used by network operators to diagnose connectivity problems between adjacent network elements. LLDP can discover up to two devices per port.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf015. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: LLDP Versus Cisco Discovery Protocol TLV Comparison Function Description LLDP TLV Cisco Discovery Protocol TLV IP network prefix support-Used to send the network prefix and used for ODR No IP Network Prefix TLV Hello piggybacking-Can be used to piggy back hello messages from other protocols No Protocol Hello TLV Maximum-transmission-unit (MTU) support-Specifies the size of the MTU No MTU TLV http://www. Full/Half Duplex TLV Indicates status (duplex configuration) of CDP broadcast interface.com 47 Cisco 300-115 Exam A.

actualtests.2SX/configuration/guide/udld. B. When a unidirectional link is detected. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.cisco.division multiplexing (WDM) No External Port-ID TLV VTP management support No VTP Management Domain TLV Port unidirectional mode-Used in fiber.com . where the connection may be unidirectional No Port UniDirectional Mode TLV Management address Management Address TLV Management-AddressTLV Allows for organizational unique TLVs Yes No Reference: http://www.ht ml http://www. Reference: http://www.www. UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity.com/en/US/technologies/tk652/tk701/technologies_white_paper0900aecd804cd4 6d. UDLD puts the affected port into the errdisabled state and alerts the user. C. Any Time.exam. UDLD is a standardized Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures. capabilities.html "Pass Any Exam. D. UDLD detects the existence of unidirectional links.com 48 Cisco 300-115 Exam QUESTION 59 Which statement about the UDLD protocol is true? A. and neighbors on a local area network. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity.com/en/US/docs/switches/lan/catalyst6500/ios/12. capabilities." .External port support-Used to identify the card terminating the fiber in the case of wavelength.cisco. and neighbors on a local area network.

normal and aggressive active and aggressive normal and active normal and passive normal and standby Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between "Pass Any Exam.2SX/configuration/guide/udld.com 49 Cisco 300-115 Exam devices and ports that support UDLD. B. E.ht ml QUESTION 61 What is the default interval at which Cisco devices send Cisco Discovery Protocol advertisements? A. C. D.actualtests.com .www. 30 seconds 60 seconds 120 seconds 300 seconds Correct Answer: B Section: (none) Explanation http://www. UDLD detects the existence of unidirectional links." . C. D.com/en/US/docs/switches/lan/catalyst6500/ios/12. When a unidirectional link is detected. Reference: http://www.cisco. UDLD puts the affected port into the errdisabled state and alerts the user.QUESTION 60 Which option lists the modes that are available for configuring UDLD on a Cisco switch? A. Any Time. UDLD can operate in either normal or aggressive mode.exam. B.

C.com/en/US/docs/ios-xml/ios/cdp/configuration/15-mt/nm-cdp. Each device configured for Cisco Discovery Protocol advertises at least one address at which the device can receive messages and sends periodic advertisements (messages) to the well-known multicast address 01:00:0C:CC:CC:CC. CDP is enabled by default and can be disabled globally with the command no cdp enable. by default. and network-independent protocol that networking applications use to learn about nearby.com . Advertisements contain time-to-live information.exam. use the "no cdp run" command.com/en/US/docs/ios/12_2/configfun/command/reference/frf015.com 50 Cisco 300-115 Exam Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true? A.html#wp1017573 QUESTION 63 Which VTP mode is needed to configure an extended VLAN. Advertisements supported and configured in Cisco software are sent. B. CDP also is enabled on supported interfaces by default. To disable it globally. every 60 seconds. Cisco Discovery Protocol is enabled by default. Any Time. CDP is disabled by default and can be enabled globally with the command cdp run.www." . Reference: http://www. directly connected devices. To disable CDP on an interface.cisco. when a switch is configured to use VTP versions 1 or 2? A. Devices discover each other by listening at that address.cisco. transparent http://www.Explanation/Reference: Explanation: Cisco Discovery Protocol is a Layer 2.actualtests. use the "no cdp enable interface" configuration command.discover. D. which indicates the length of time a receiving device should hold Cisco Discovery Protocol information before discarding it. which means the Cisco IOS software will receive CDP information. CDP is disabled by default and can be enabled globally with the command cdp enable. CDP is enabled by default and can be disabled globally with the command no cdp run. media-independent. Reference: http://www.html QUESTION 62 "Pass Any Exam. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: CDP is enabled on your router by default. They also listen to messages to learn when interfaces on other devices are up or go down.

Extended VLANs are only supported in version 3 and not in versions 1 or 2. C. Reference: http://www.cisco.www. VLANs in the range 1006 to 4094 are removed from VTP control.094 VLANs Reference: http://en. B.wikipedia. Extended-range VLANs are supported only in VTP version 3. All other values may be used as VLAN identifiers.com 51 Cisco 300-115 Exam QUESTION 64 What is the size of the VLAN field inside an 802.B.ht ml "Pass Any Exam. D.com .com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/vtp. client C. allowing up to 4. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: VTP version 1 and version 2 support VLANs 1 to 1000 only. If converting from VTP version 3 to VTP version 2." . The hexadecimal values of 0x000 and 0xFFF are reserved.1Q http://www. Any Time. server D.exam.1q frame? A.org/wiki/IEEE_802.actualtests. 8-bit 12-bit 16-bit 32-bit Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs.

QUESTION 65 What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. C." . Any Time. D. If more than one VLAN is needed. QUESTION 66 "Pass Any Exam. Which option shows the expected result if a show vlan command is issued? http://www.com 52 Cisco 300-115 Exam Refer to the exhibit. 0 1 2 1024 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.exam.com . B.actualtests. the port should be configured as a trunk port.www.

com .com 53 Cisco 300-115 Exam http://www." . Any Time. C. B.A.exam.actualtests. "Pass Any Exam.www.

H. so even though Cisco IOS will accept both. portfast port-security spanning tree storm control Correct Answer: A http://www. Any Time.D. E.exam. G. a port can not be both. ignoring the switchport access VLAN 10 command.actualtests. D. the port has been configured both as a trunk and as a switchport in data vlan 10. F. B. Exhibit A Exhibit B Exhibit C Exhibit D Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: In this case. C.com ." . QUESTION 67 Which feature is automatically enabled when a voice VLAN is configured. but not automatically disabled when a voice VLAN is removed? "Pass Any Exam. Obviously. the port will actually be used as a trunk.com 54 Cisco 300-115 Exam A.www.

Reference: http://www.1_22_ea11x/conf iguration/guide/swvoip. ·The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN.1q header found? A.exam. When you disable voice VLAN. the Port Fast feature is not automatically disabled.com/en/US/docs/switches/lan/catalyst2950/software/release/12. within the Ethernet payload C.Section: (none) Explanation Explanation/Reference: Explanation: Voice VLAN Configuration Guidelines ·You should configure voice VLAN on switch access ports.com/ B.cisco. within the Ethernet header http://www.exam. within the Ethernet FCS D.html QUESTION 68 In which portion of the frame is the 802. ·The Port Fast feature is automatically enabled when voice VLAN is configured.com . within the Ethernet source MAC address Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Frame format http://www. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display).

www." .1Q QUESTION 69 Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a switch? A.com . Both VTP versions 1 and 2 supports pruning. Reference: http://www. but VLAN 1 can't be pruned because it's an administrative VLAN.php QUESTION 70 Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? http://www.com/VTP-Pruning.org/wiki/IEEE_802. B.1Q tag in an Ethernet frame "Pass Any Exam. VLANs 2 1001 are pruning eligible. VLANs 1-1001 VLANs 1-4094 VLANs 2-1001 VLANs 2-4094 Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: VTP pruning should only be enabled on VTP servers. it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en.orbit-computer-solutions. D.actualtests.wikipedia.1Q does not encapsulate the original frame. all the clients in the VTP domain will automatically enable VTP pruning. Any Time. C. for Ethernet frames.Insertion of 802.com 55 Cisco 300-115 Exam 802. Instead. By default.exam.

www.actualtests. Enable VTP pruning and disable 802. The users in an engineering department that connect to the same access switch cannot access the network. The network engineer found that the engineering VLAN is missing from the database. even in situations in which few users are connected in that VLAN.1q. C. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. Reference: http://www. Update the VTP revision number. D. http://www.A. Disable VTP pruning and disable 802. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic.exam." .1q. D. B. All switches in the network receive all broadcasts. Change VTP mode to server and enable 802.com .com 56 Cisco 300-115 Exam VTP ensures that all switches in the VTP domain are aware of all VLANs.1q.cisco. However.html#vtp_pruning QUESTION 71 Refer to the exhibit. VTP pruning port-security storm control bpdguard Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. there are occasions when VTP can create unnecessary traffic. Which action resolves this problem? A. Any Time. C. B.com/c/en/us/support/docs/lan-switching/vtp/10558.21.

exam. Then. "Pass Any Exam. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server." .1Q trunking to pass this new VLAN along to the other switches. QUESTION 72 Refer to the exhibit.Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Only VTP servers can add new VLANs to the switched network.com .actualtests. Any Time. you will need to enable 802.com 57 Cisco 300-115 Exam http://www.www.

but users in company A are not able to access network resources in company B when DTP is enabled.dat and ensure that the switch with lowest MAC address is the VTP server. C.com . http://www. Manually force trunking with switchport mode trunk on both switches.exam. Disable DTP and document the VTP domain mismatch.The network switches for two companies have been connected and manually configured for the required VLANs. Delete vlan. Which action resolves this problem? A. B.

QUESTION 74 Which statement about using native VLANs to carry untagged frames is true? http://www. only 802.www. Consider that this is a multivendor environment.com . There are 2 different methods for trunking.com 58 Cisco 300-115 Exam there is a problem with VTP or the trunking interfaces. Of these. The VTP domain names do match and they are both VTP servers so there are no issues there. C. 802. The only viable solution is that there is a DTP issues and so you must instead manually configure the trunk ports between these two switches so that the VLAN information can be sent to each switch.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. QUESTION 73 A network engineer must implement Ethernet links that are capable of transporting frames and IP traffic for different broadcast domains that are mutually isolated. Which Cisco IOS switching feature can be used to achieve the task? A." . Enable the company B switch with the vtp mode server command. PPP encapsulation with a virtual template Link Aggregation Protocol at the access layer dot1q VLAN trunking Inter-Switch Link Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Here the question asks for transporting "frames and IP traffic for different broadcast domains that are mutually isolated" which is basically a long way of saying VLANs so trunking is needed to carry VLAN information. D. B.D.1Q and ISL.exam. Any Time. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Since the number of existing VLANs differ on the switches (9 on A and 42 on B) we know that "Pass Any Exam.actualtests.

you will see CDP error messages on the console output. 802. Any Time. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. but version 1 does not. D.com . B. C. both with native VLAN mismatch.www. http://www. spanning-tree bpdu-filter is enabled.1q trunks are on both sides.com/articles/article. A multilayer switch has been configured to send and receive encapsulated and tagged frames.asp?p=29803&seqNum=3 QUESTION 75 Refer to the exhibit. Cisco Discovery Protocol version 2 carries native VLAN information. but version 2 does not. Reference: http://www." . D.exam. VLAN 2013 on the multilayer switch is configured as the native VLAN. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information. C.com 59 Cisco 300-115 Exam Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches. Which option is the cause of the spanning-tree error? A. but versions 1 and 2 do not. Cisco Discovery Protocol version 1 carries native VLAN information. Cisco Discovery Protocol version 3 carries native VLAN information.A.ciscopress. VLAN ID 1 should not be used for management traffic because its unsafe. VLAN spanning-tree in SW-2 is configured. B.actualtests. If you have a native VLAN mismatch.

Reference: http://www. which stops the inefficient flooding of frames where they are not needed. VTP pruning access list switchport trunk allowed VLAN VLAN access-map Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Cisco advocates the benefits of pruning VLANs in order to reduce unnecessary frame flooding. but 1 (the default native VLAN) on the other switch. Any Time.com 60 Cisco 300-115 Exam QUESTION 76 A network engineer must improve bandwidth and resource utilization on the switches by stopping the inefficient flooding of frames on trunk ports where the frames are not needed. Failure to do this causes Cisco switches to partially shut down the trunk port because having mismatched native VLANs can result in spanning-tree loops. C. B. the trunk still remains up for other VLANs.switches/24330-185. D.com/c/en/us/support/docs/switches/catalyst-6500-series.aspx?b=CCNP_Studies_Switching&seqNum=25 "Pass Any Exam.www. If you use 802.1Q trunks.com/library/content. If spanning tree detects a native VLAN mismatch.informit. you must ensure that you choose a common native VLAN for each port in the trunk.actualtests.cisco. spanning tree blocks local native VLAN traffic and the remote switch native VLAN traffic on the trunk. Native VLAN mismatches are detected via spanning tree and Cisco Discovery Protocol (CDP).html QUESTION 77 http://www. not via DTP messages. The "vtp pruning" command prunes VLANs automatically.Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Here we see that the native VLAN has been configured as 2013 on one switch. Reference: http://www. Which Cisco IOS feature can be used to achieve this task? A. however.exam.com ." .

Enable VTP pruning on the VTP server. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Manaully pruning the default VLAN (1) can only be done with the "switchport trunk allowed vlans remove" command. B. The "trunk pruning vlan 1" option is not a valid command.exam. D. C.com 61 Cisco 300-115 Exam QUESTION 78 What is required for a LAN switch to support 802. C.exam. Manually prune default VLAN with switchport trunk allowed vlans remove. Support less than 1500 MTU Support 1504 MTU or higher Support 1522 layer 3 IP and IPX packet Support 1547 MTU only Correct Answer: B Section: (none) Explanation http://www. B.actualtests. D. Use trunk pruning vlan 1. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning.www.Which action allows a network engineer to limit a default VLAN from being propagated across all trunks? http://www.com/ A. Any Time. "Pass Any Exam.com ." . Upgrade to VTP version 3 for advanced feature set support.1q Q-in-Q encapsulation? A.

4-bytes except the native VLAN 8-bytes except the native VLAN 4-bytes including native VLAN 8-bytes including native VLAN "Pass Any Exam. except the native VLAN.com/en/US/docs/switches/lan/catalyst3550/software/release/12. C." . the other two bytes for tag control information (TCI).www.cisco. Two bytes are used for the tag protocol identifier (TPID).html QUESTION 79 Refer to the exhibit.1Q trunking.actualtests. G0/2. and G0/4 between two switches using Ethernet port-channel.1_13_ea1/config uration/guide/swtunnel.1Q tunneling (Q-in-Q) feature increases the frame size by 4 bytes when the extra tag is added. How many bytes are added to each frame as a result of the configuration? A.Explanation/Reference: Explanation: The default system MTU for traffic on Catalyst switches is 1500 bytes. B. Any Time. D. all VLAN packets are tagged on the trunk link. Which http://www. Because the 802. you must configure all switches in the service-provider network to be able to process maximum frames by increasing the switch system MTU size to at least 1504 bytes. A VLAN tag adds 4 bytes to the frame.com . Reference: http://www. G0/3. QUESTION 80 A network engineer configured a fault-tolerance link on Gigabit Ethernet links G0/1.com 62 Cisco 300-115 Exam Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: In 802.exam.

Configure LACP port-priority on G0/1 to 65535.desirable. The higher the number. desirable. and on. PagP modes are active. The valid range is from 1 to 65535. http://www. desirable. desirable. D. "Pass Any Exam. C. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: A LACP port priority is configured on each port using LACP. and on-on allow the formation of a channel.html#wp1081491 QUESTION 81 Which statement about the use of PagP link aggregation on a Cisco switch that is running Cisco IOS Software is true? A. The default is 32768.actualtests. D.com/c/en/us/td/docs/ios/12_2sb/feature/guide/gigeth.cisco.desirable. Only the combinations auto-auto. Only the combinations active-active.desirable. C. The PagP modes are explained below.com 63 Cisco 300-115 Exam B. and on. B. LACP uses the port priority with the port number to form the port identifier. desirable. Only the combinations auto-desirable." . and on. PagP modes are active. and on-on allow the formation of a channel. desirable. PagP modes are off. desirable. Only the combinations auto-desirable. The port priority can be configured automatically or through the CLI.action allows interface G0/1 to always actively forward traffic in the port-channel? A. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: PagP modes are off. and on. Configure G0/1 as half duplex and G0/2 as full duplex. Configure LACP port-priority on G0/1 to 1. the lower the priority. LACP traffic goes through G0/4 because it is the highest interface ID. auto. Reference: http://www. and on-on allow the formation of a channel. and on-on allow the formation of a channel. desirable.www.com .desirable. active. and on-on will allow a channel to be formed. Any Time.desirable.exam. and on. PagP modes are off. Only the combinations active-desirable. desirable. desirable. The port priority determines which ports should be put in standby mode when there is a hardware limitation that prevents all compatible ports from aggregating. auto. desirable.

desirable-desirable.switches/21041-131.exam. Reference: http://www.actualtests." .Only the combinations of auto-desirable. such as a router. "Pass Any Exam.com .html QUESTION 82 Refer to the exhibit. Any Time. the device on the other side must have PagP set to on. and on-on will allow a channel to be formed.cisco.com/c/en/us/support/docs/switches/catalyst-2900-xl-series. If a device on one side of the channel does not support PagP.www.com 64 Cisco 300-115 Exam http://www.

com .Which EtherChannel negotiation protocol is configured on the interface f0/13 f0/15? A. Port Combination Protocol http://www. Port Aggregation Protocol C. Link Combination Control Protocol B.exam.

Only the combinations auto-desirable.www. desirable. desirable. fa0/14.com . and on. and on-on will allow a channel to be formed. The Link Aggregate Control Protocol (LACP) trunking supports four modes of operation: In this example. Link Aggregation Control Protocol Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: PAgP modes are off. "Pass Any Exam. and fa0/15 are all in Port Channel 12.actualtests. we see that fa 0/13." . Users of PC-1 experience slow connection when a webpage is requested from the server.exam.desirable.D. Any Time. . To increase bandwidth.com 65 Cisco 300-115 Exam QUESTION 83 Refer to the exhibit. as shown here: Server_Switch#sh etherchannel load-balance EtherChannel Load-Balancing Operational State (src-mac): Non-IP: Source MAC address IPv4: Source MAC address http://www. auto. which is operating in desirable mode. the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch. which is only a PAgP mode.

the source MAC address will always be that of PC-1. B. Correct Answer: A Section: (none) Explanation Explanation/Reference: http://www. Which action can the engineer take to resolve this issue? A. D. B.actualtests. traffic will only be using one of the port channel links. Change the load-balance method to dst-mac.exam. PAgP changes the port speed but not the duplex for all ports in the bundle. PAgP does not change the port speed and duplex for all ports in the bundle until the switch is rebooted.www. Which statement describes what happens to all ports in the bundle? A. C. PAgP drops the ports that do not match the configuration. since the web server has two NICs traffic will be load balanced across both MAC addresses. Upgrade the switch IOS to IP services image. The load balancing method should be changed to destination MAC. and since the load balancing method is source MAC. "Pass Any Exam.com 66 Cisco 300-115 Exam QUESTION 84 A network engineer changed the port speed and duplex setting of an existing EtherChannel bundle that uses the PAgP protocol. Disable EtherChannel load balancing. Contact Cisco TAC to report a bug on the switch. PAgP changes the port speed and duplex for all ports in the bundle. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Since this traffic is coming from PC-1. C.IPv6: Source IP address Server_Switch# HoweIer. D.com ." . Any Time. traffic is still slow.

and all must be configured as either Layer 2 or Layer 3 interfaces. auto. The device on the other side must have PAgP set to on if a device on one side of the channel does not support PAgP.com . "Pass Any Exam. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. desirable. Any Time.cisco. PAgP requires that all ports in the channel belong to the same VLAN or are configured as trunk ports. Some restrictions are deliberately introduced into PAgP.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. PAgP changes the port speed and duplex for all ports in the bundle. such as a router. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 16 Gbps only for Gigabit EtherChannel. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. If speed and duplex change when a bundle exists. PAgP packets are sent between EtherChannel-capable ports in order to negotiate the formation of a channel.com 67 Cisco 300-115 Exam The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. desirable.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html http://www. and on. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. and on-on allow the formation of a channel. D. All interfaces in each EtherChannel must be the same speed.exam. Reference: http://www. ·PAgP modes are off.desirable.html QUESTION 85 Which statement about using EtherChannel on Cisco IOS switches is true? A. The restrictions are: ·PAgP does not form a bundle on ports that are configured for dynamic VLANs." . C. B. all ports in the bundle are modified to match that VLAN.www. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. When a bundle already exists and a VLAN of a port is modified.actualtests. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 8 Gbps (Gigabit EtherChannel) between your switch and another switch or host. ·PAgP does not group ports that operate at different speeds or port duplex. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link. Reference: http://www.Explanation: PAgP aids in the automatic creation of EtherChannel links.cisco. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 10 Gbps only for Gigabit EtherChannel. Only the combinations auto-desirable.

com .www. Physical port Fa0/13. Physical port Fa0/13.com 68 Cisco 300-115 Exam Which statement about switch S1 is true? A. B. C.exam.QUESTION 86 Refer to the exhibit. and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol." .actualtests. Fa0/14. http://www. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol. Any Time. Fa0/14. Fa0/14. Logical port Fa0/13. "Pass Any Exam. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol.

1d BPDU and eventually the two switches run 802. 802. it restarts the timer and starts using RSTP BPDUs on that port.1D configuration BPDUs and TCN BPDUs on a per-port basis.1D switch and starts using only 802. 802.1d to communicate.1d understands RSTP BPDUs because they are the same version.1d understands RSTP BPDUs because they are the same version.1d does not understand RSTP BPDUs because they are different versions.1d BPDU? A. the switch processes all BPDUs received on that port and ignores the protocol type.1d BPDU. 802.1d BPDU.actualtests.exam. B.1d BPDU and eventually the two switches run 802.1D BPDU after the port migration-delay timer has expired. and RSTP BPDUs are sent. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: For backward compatibility with 802. http://www. D. but when a RSTP switch receives a 802.1D switches. Logical port Fa0/13.1d to communicate. which is Cisco proprietary.www. which is a standards based protocol. but when a RSTP switch receives an 802. C. Fa0/14. it assumes that it is connected to an 802.com . 802. However. The protocol used for this port channel shows as LACP. if the RSTP switch is using 802. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent).1d BPDU. it responds with a 802. When a port is initialized. but when a RSTP switch receives a 802.com 69 Cisco 300-115 Exam 802. RSTP selectively sends 802. but when a RSTP switch receives a 802. Any Time. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: These three ports show that they are in Port Channel 1. it does not respond with a 802. If the switch receives an 802.D. and the (SU) means they are in use and operating at layer 2.1d BPDU and eventually the two switches run 802." .1d BPDU.1D BPDUs.1d does not understand RSTP BPDUs because they are different versions. While this timer is active. it does not respond with a 802. as opposed to PagP. QUESTION 87 What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives "Pass Any Exam. it responds with an 802.1d to communicate. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol.1d BPDU.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired.

· http://www. what is the total number of spanning-tree instances running on the switch? A. such as root bridge ID.actualtests. and so forth.2SX/configuration/guide/book/spantree.com 70 Cisco 300-115 Exam Explanation: Unlike other spanning tree protocols. all VLANs are assigned to the IST. but each MST instance has its own topology parameters.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. Instance 0 is a special instance for a region. Any Time.html QUESTION 88 When two MST instances (MST 1 and MST 2) are created on a switch. MST maintains multiple spanning tree instances. 1 2 3 4 Correct Answer: C Section: (none) Explanation Explanation/Reference: "Pass Any Exam. The IST is the only spanning tree instance that sends and receives BPDUs. and the special 0 instance. MST establishes and maintains IST. Because the MST BPDU carries information for all instances. which are 68sername6868eed within MST BPDUs. MST instance 1 in region A is independent of MST instance 1 in region B. and CST spanning trees: An IST is the spanning tree that runs in an MST region. even if regions A and B are interconnected. · A CIST is a collection of the ISTs in each MST region. B. All MST instances within the same region share the same protocol timers.cisco. By default. All of the other spanning tree instance information is contained in MSTP records (Mrecords). CIST. D.com . there will be the 2 defined MST instances. C.exam. for example. All other MST instances are numbered from 1 to 4094.www. the number of BPDUs that need to be processed to support multiple spanning tree instances is 68sernamcantly reduced. root path cost. known as the IST." . Within each MST region. An MST instance is local to the region.Reference: http://www. In the case for this question. in which all the spanning tree instances are independent. for a total of 3 instances.

actualtests.html QUESTION 89 Refer to the exhibit.exam.www.com 71 Cisco 300-115 Exam f1/0 and f1/1 have the same end-to-end path cost to the designated bridge.com .cisco. "Pass Any Exam. Any Time. Reference: http://www.2SX/configuration/guide/book/spantree." .com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.The CST interconnects the MST regions and single spanning trees. Which action is needed to modify the Layer 2 spanning-tree network so that traffic for PC1 VLAN from switch SW3 uses switchport f1/1 as a primary port? http://www.

If all LAN ports have the same priority value.A. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: If a loop occurs. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports.1_9_ea1/configur ation/guide/swstp. Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. configurable in increments of 16.www.actualtests. Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. The possible priority range is 0 through 240 (default 128).com . You can assign higher priority values to LAN ports that you want STP to select first and lower priority values to LAN ports that you want STP to select last.com/en/US/docs/switches/lan/catalyst2950/software/release/12.html#wp1105354 QUESTION 90 Refer to the exhibit. D. "Pass Any Exam.com 72 Cisco 300-115 Exam Reference: http://www. Any Time. Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. A lower path cost represents higher-speed transmission and is preferred. C.cisco." . STP considers port priority when selecting a LAN port to put into the forwarding state. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16. B. http://www.exam.

The switch priority for VLAN 1 and the macro specifies "This Bridge is the root". The switch priority value is zero. D.actualtests. C.19 and all ports are forwarding. Any Time. B. The bridge priority is 1 and all ports are forwarding.com . The bridge priority is 128." . it has the lowest priority value for VLAN 1. "Pass Any Exam.www.com 73 Cisco 300-115 Exam Correct Answer: D Section: (none) Explanation http://www.Why would the switch be considered as a root bridge? A.exam.

B. All ports are members of VLAN 10.www.Explanation/Reference: Explanation: For priority.exam.1_9_ea1/configur ation/guide/swstp." .com 74 Cisco 300-115 Exam http://www.html#wp1020666 QUESTION 91 Refer to the exhibit. The lower the number. the more likely the switch will be chosen as the root switch. Any Time. Reference: http://www. which option will be the new root port for VLAN 10? A.cisco. D.com/en/US/docs/switches/lan/catalyst2950/software/release/12. the range is 0 to 61440 in increments of 4096. C. interface f0/13 interface f0/14 interface f0/15 71sername71e f0/21 "Pass Any Exam.com . Considering the default cost of upstream bridges to the root bridge is equal. the default is 32768.actualtests.

fa0/21 has te lowest cost.com/extreme/topics/802_1d_spanning_tree_election_rules QUESTION 92 A network engineer is trying to deploy a PC on a network.extremenetworks.actualtests.com . Configure port duplex and speed to auto negotiation. no user data is sent or received but it may go into forwarding mode if the other links in use were to fail and the spanning tree algorithm determines the port may transition to the forwarding state.Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: Root Port election on each bridge Each (non-Root) bridge has exactly one Root Port. BPDU data is still received in blocking state. Reference: https://community. In this case.exam.com 75 http://www.Learning While the port does not yet forward frames (packets) it does learn source addresses from frames received and adds them to the filtering database (switching database) 4. STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately. 2. 1. STP still monitors incoming BPDUs that would indicate it should return to the blocking state to prevent a loop. Configure no switchport. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: When first powered on. C.Listening The switch processes BPDUs and awaits possible new information that would cause it to return to the blocking state.www. With the initial version of spanning tree. normal operation." . bypassing the listening and learning states. D. Configure spanning-tree portfast. Which Layer 2 enhancement can be used to eliminate this delay? A. this process could take from 30-60 seconds. each port goes through 4 states to ensure that there are no physical loops in the layer 2 broadcast domain. B. These steps are outlined as follows.Blocking A port that would cause a switching loop. "Pass Any Exam. so it will be th root port. which represents the best path to the Root Bridge. Any Time. 3. The engineer observes that when the PC is connected to the network.Forwarding A port receiving and sending data. Configure port to duplex full and speed 1000. it takes 30 to 60 seconds for the PC to see any activity on the network interface card.

actualtests. If an interface is enabled for portfast receives BDPU. C. and forwarding states. learning.www. and forwarding states.us/Home/ethernet-and-ip/spanning-tree-protocol QUESTION 93 A network engineer configured an Ethernet switch using these commands. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately. learning. B.com . bypassing the listening and learning states. The port goes into BPDU-inconsistent state and stops forwarding traffic. "Pass Any Exam. The port goes into errdisabled state and stops forwarding traffic.Cisco 300-115 Exam Reference: http://net. Any Time.exam. The port goes into loop-inconsistent state and stops forwarding traffic. the "Spanning-tree portfast bpdufilter default" command specifies that if a BPDU is received on that port. However.cmed. If an interface is enabled for portfast receives BDPU. B. If an interface is enabled for portfast receives BDPU. D. If an interface is enabled for portfast receives BDPU. QUESTION 94 Which statement describes what happens when a port configured with root guard receives a superior BPDU? A. the port is shut down immediately. C. learning.com 76 Cisco 300-115 Exam Correct Answer: D Section: (none) Explanation http://www. D. the port goes into the spanning-tree inconsistent state. Switchone(config) # Spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true? A. the port goes through the spanning-tree listening. The port goes into root-inconsistent state and stops forwarding traffic." . the port does not go through the spanning-tree listening. and forwarding states should be used. then the default action of STP of listening.

html "Pass Any Exam. B. It is available only on a Cisco Catalyst 6500 Series chassis.com 77 Cisco 300-115 Exam QUESTION 96 http://www. ·mLACP does not support half-duplex links.2SX/configuration/guide/mlacp _server_support. ·Converting a port channel to mLACP can cause a service disruption.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800ae96b. the root guard enforces the position of the root bridge.Explanation/Reference: Explanation: The root guard ensures that the port on which root guard is enabled is the designated port. Reference: http://www.cisco. root guard moves this port to a root-inconsistent STP state.inconsistent state is effectively equal to a listening state. Reference: http://www. unless two or more ports of the root bridge are connected together. If the bridge receives superior STP Bridge Protocol Data Units (BPDUs) on a root guard-enabled port. ·No more than 100 VLANs can be active on a switch configured as a PoA. D.actualtests.exam.com/en/US/docs/switches/lan/catalyst6500/ios/12. No traffic is forIarded across this port." . ·mLACP does not support multiple neighbors. It is not available in VSS. Converting a port channel to mLACP can cause a service disruption. In this way. root bridge ports are all designated ports.cisco. It does not support 1Gb links. Normally. ·VSS mode does not support the mLACP for server access feature. This root.com .www. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: When configuring mLACP for Server Access. C. ·The DHD system priority must be lower (higher numerically) than the PoA system priority.shtml QUESTION 95 Which statement about restrictions for multichassis LACP is true? A. follow these guidelines and restrictions: ·PFC3A mode does not support the mLACP for server access feature. Any Time.

html QUESTION 97 Which statement describes what happens if all VSL connections between the virtual switch members are lost? A. D." . and only the new active virtual switch continues to forward traffic. If for some rare reason all "Pass Any Exam. 4 6 8 12 Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: The VSS is made up of the following: · Virtual switch members: Cisco Catalyst 6500 Series Switches (up to two switches with initial release) deployed with the Virtual Switching Supervisor 720 10GE · Virtual switch link (VSL): 10 Gigabit Ethernet connections (up to eight using EtherChannel) between the virtual switch members. B. D.com 78 http://www. C. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: Q.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74b . What happens if all VSL connections between the virtual switch members are lost? A. and both virtual switch members continue to forward traffic independently. C. VSLs can be configured with up to eight links between the two switches across any combination of line cards or supervisor ports to provide a high level of redundancy. Any Time. Reference: http://www. The VSS transitions to the dual active recovery mode.exam. Both virtual switch members cease to forward traffic.actualtests.cisco.What is the maximum number of 10 Gigabit Ethernet connections that can be utilized in an EtherChannel for the virtual switch link? A. The VSS transitions to the dual active recovery mode.com .www. The virtual switch members reload. B.

D. the VSS will transition to the dual active recovery mode.html QUESTION 98 Which statement describes what happens when a switch enters dual active recovery mode? http://www. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. The new active virtual switch continues to forward traffic on all links. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. B.exam.com/ A. http://www. The VSS detects which system was last in active state and shuts down the other switch. Reference: http://www. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: In the dual active recovery mode. The switch shuts down and waits for the VSL link to be restored before sending traffic. C.Cisco 300-115 Exam VSL connections are lost between the virtual switch members leaving both the virtual switch members up. The dual active state is detected rapidly (subsecond) by any of the following three methods: · Enhancement to PagP used in MEC with connecting Cisco switches · L3 Bidirectional Forwarding Detection (BFD) configuration on a directly connected link (besides VSL) between virtual switch members or through an L2 link through an access layer switch · L2 Fast-Hello Dual-Active Detection configuration on a directly connected link (besides VSL) between virtual switch members (supported with 12.2(33)SXI) In the dual active recovery mode.exam. The switch continues to forward traffic out all links and enables spanning tree on VSL link and all other links to prevent loops.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74b . All interfaces are shut down in the formerly active virtual switch member. but the new active virtual switch forwards traffic on all links.cisco. The new active virtual switch continues to forward traffic on all links.com .

13.Name: Marketing . but will need to be modified to support the addition of SwitchB.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74b .will support two servers attached to fa0/13 and fa0/14 · Vlan 23 o Name: Engineering . · SwitchA needs to be the root switch for vlans 11.will support two servers attached to fa0/15 and fa0/16 · Access ports that connect to server should transition immediately to forwarding state upon detecting the connection of a device. · SwitchB must operate in the same spanning tree mode as SwitchA http://www. Configuration Requirements for SwitchA The VTP and STP configuration modes on SwitchA should not be modified. RouterA is currently configured correctly and is providing the routing function for devices on SwitchA and SwitchB. You have been tasked with competing the needed configuring of SwitchA and SwitchB.cisco. All other vlans should be left are their default values.Reference: http://www.www. 12. SwitchA and SwitchB use Cisco as the enable password.Name: Sales . · SwitchB VTP mode needs to be the same as SwitchA. SwitchB has a minimal configuration. Any Time. SwitchA is currently configured correctly. 22 and 23.exam. 21.actualtests." .will support two servers attached to fa0/9 and fa0/10 · Vlan 22 .html "Pass Any Exam. Configuration Requirements for SwitchB · Vlan 21 .com .com 79 Cisco 300-115 Exam QUESTION 99 CORRECT TEXT Scenario: You work for SWITCH.com. They have just added a new switch (SwitchB) to the existing network as shown in the topology diagram.

· The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all vlans.proprietary protocol. with SwitchA controlling activation. 22 and 23 should tagged when traversing the trunk link. 21.168.com 80 Cisco 300-115 Exam Inter-switch Connectivity Configuration Requirements · For operational and security reasons trunking should be unconditional and Vlans 1.11/24 "Pass Any Exam.actualtests. This mode should be done with a non.exam.www.com .· No routing is to be configured on SwitchB · Only the SVI vlan 1 is to be configured and it is to use address 192. · Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk link. http://www.1." . Any Time.

exam. Correct Answer: Section: (none) Explanation Explanation/Reference: Answer: Here are steps: hostname SWITCH_B http://www. D.com .A. C. B.

21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! interface FastEthernet0/9 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/10 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/13 switchport access vlan 22 switchport mode access spanning-tree portfast ! ! http://www.exam.www. Any Time.com 81 Cisco 300-115 Exam interface FastEthernet0/4 switchport trunk allowed vlan 1." .! ! vlan 21 name Marketing vlan 22 name Sales vlan 23 name Engineering ! ! interface FastEthernet0/3 switchport trunk allowed vlan 1.21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! "Pass Any Exam.actualtests.com .

com 82 Cisco 300-115 Exam ! interface Port-channel 1 switchport mode trunk switchport trunk encapsulation dot1q spanning-tree allowed vlans 1.1.actualtests. Any Time.0 ! end SWITCH_B(config)# hostname SWITCH_A ! panning-tree vlan 11 root primary spanning-tree vlan 12 root primary spanning-tree vlan 13 root primary spanning-tree vlan 21 root primary spanning-tree vlan 22 root primary spanning-tree vlan 23 root primary http://www.com .11 255.21-23 ! interface Vlan1 ip address 192.168." .www.exam.255.255.interface FastEthernet0/14 switchport access vlan 22 switchport mode access spanning-tree portfast ! interface FastEthernet0/15 switchport access vlan 23 switchport mode access spanning-tree portfast ! interface FastEthernet0/16 switchport access vlan 23 switchport mode access spanning-tree portfast ! ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 "Pass Any Exam.

1.com . Any Time.21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1.! interface FastEthernet0/3 switchport trunk allowed vlan 1.exam.168.www.actualtests.1 ! ! http://www." .21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/21 switchport access vlan 21 switchport mode access ! interface FastEthernet0/22 switchport access vlan 22 switchport mode access ! interface FastEthernet0/23 "Pass Any Exam.com 83 Cisco 300-115 Exam switchport access vlan 23 switchport mode access ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 ! interface Vlan1 no ip address shutdown ! ip default-gateway 192.

" .End QUESTION 100 CORRECT TEXT You have been tasked with configuring multilayer SwitchC. Company policies forbid the use of static or default routing.exam.0/24 190.200. You do not have access to RouteC.www.10. The following subnets are available to implement this solution: 10.actualtests. Company policies forbid the use of static or default routing. All routes must be learned via EIGRP 65010 routing protocol.200.com 84 Cisco 300-115 Exam Hosts H1 and H2 are configured with the correct IP address and default gateway. Note: Due to administrative restrictions and requirements you should not add or delete VLANs.10. http://www. No trunking has been configured on RouterC.com . RouterC is correctly configured.64/27 "Pass Any Exam. which has a partial configuration and has been attached to RouterC as shown in the topology diagram. You need to configure SwitchC so that Hosts H1 and H2 can successfully ping the server S1. Also SwitchC needs to be able to ping server S1.250. Routing must only be enabled for the specific subnets shown in the diagram. All routes must be learned via the EIGRP routing protocol. Due to administrative restrictions and requirements you should not add/delete vlans or create trunk links. changes VLAN port assignments or create trunks. Any Time.32/27 190.250. SwitchC uses Cisco as the enable password. Routed interfaces should use the lowest host on a subnet when possible.

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com 85 Cisco 300-115 Exam http://www.com .exam."Pass Any Exam. Any Time.actualtests.www." .

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C. B.A. http://www.exam.com . Correct Answer: Section: (none) Explanation Explanation/Reference: Answer: There are two ways to configure interVLAN routing in this case: + Use RouterC as a "router on a stick" and SwitchC as a pure Layer2 switch. + Only use SwitchC for interVLAN routing without using RouterC. Trunking must be established between RouterC and SwitchC. D. SwitchC should be configured as a Layer 3 switch (which supports ip routing function as a router).

0.200. In order to complete the lab.65 Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10.65 255. no neighbor "Pass Any Exam.250.32 0.No trunking requires.1 so this is the lowest usable IP address.0.200.0.31 SwitchC(config-router)# network 190.0. We should check the default gateways on H1 & H2.255 SwitchC(config-router)# network 190.10.200.250.250.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED. also don't modify/delete any port just do the above configuration.0/16 is not used anywhere else in this topology.10.31 and "network 190.actualtests.0 ->RouterC has used IP 10. the simulator does not let you assign IP address on Gi0/1 interface.0 because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised.0. you should expect the ping to SERVER to succeed from the MLS.2 255.0. SwitchC(config-if)# ip address 10.33 255." .200.com 86 Cisco 300-115 Exam switch with SVIs for interVLAN routing.224 SwitchC(config-if)# no shutdown SwitchC(config-if)# int vlan 3 SwitchC(config-if)# ip address 190. Answer: \>ipconfig We will get the default gateways as follows: Host1: + Default gateway: 190.255.200. Also some reports said the "no autosummary" command can't be used in the simulator.0.0.0.250.200.com .0 0.200.10.com 87 Cisco 300-115 Exam relationship is formed between RouterC and SwitchC.250.actualtests.255." .10. gi0/11 interfaces were configured as access ports so we don't need to configure them in this sim.255.31 we can use one simple command "network 190.33 Host2: + Default gateway: 190.250. we are pretty sure instead of using two commands "network 190. Also make sure you use the correct EIGRP AS number (in the configuration above it is 650 but it will change when you take the exam) but we are not allowed to access RouterC so the only way to find out the EIGRP AS is to look at the exhibit above.10.255.255. in fact it is not necessary because the network 190.250.0. SwitchC# configure terminal SwitchC(config)# int gi0/1 SwitchC(config-if)#no switchport -> without using this command. If you use wrong AS number.200.0.64 0. In fact.0.250.200. so you will not miss within it in the exam.64 0. Click on H1 and H2 and type the "ipconfig" command to get their default gateways.10. even without "no http://www.32 0.www.255. and from the PCs as well. The question clearly states "No trunking has been configured on RouterC" so RouterC does not contribute to interVLAN routing of hosts H1 & H2 -> SwitchC must be configured as a Layer 3 "Pass Any Exam. SwitchC(config-if)# no shutdown SwitchC(config-if)# exit SwitchC(config)# int vlan 2 SwitchC(config-if)# ip address 190.200. Any Time. Any Time.224 SwitchC(config-if)# no shutdown SwitchC(config-if)#exit SwitchC(config)# ip routing (Notice: MLS will not work without this command) SwitchC(config)# router eigrp 65010 SwitchC(config-router)# network 10.exam.www.

exam.auto-summary" command the network still works correctly. But after finishing the configuration. QUESTION 101 You have been asked to install and configure a new switch in a customer network.0 is shown.0. we can use "show run" command to verify.200. http://www. only the summarized network 190. But in the exam the sim is just a flash based simulator so we should use two above commands. just for sure. Use the console access to the existing and new switches to configure and verify correct device configuration.com .

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"Pass Any Exam.com .exam.actualtests." . Any Time.com 88 Cisco 300-115 Exam http://www.www.

com 89 Cisco 300-115 Exam http://www." .com .www.actualtests."Pass Any Exam.exam. Any Time.

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the switch has been partially configured and you need to complete the rest of configuration to enable PC1 communication with PC2.com .exam.www.actualtests." . Any Time.You are connecting the New_Switch to the LAN topology. Which of the configuration is correct? "Pass Any Exam.com 90 Cisco 300-115 Exam http://www.

com .http://www.exam.

the VTP domain name must match. C. step one is to find the correct VTP name on the other switches." .www.com . D.exam. E. Any Time.com 91 Cisco 300-115 Exam Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: Within any VTP. So.A. B. Option A Option B Option C Option D Option E "Pass Any Exam.actualtests. Logging in to SW1 and using the "show vtp status" command we see this: http://www.

exam.http://www.com .

Note that the VTP versions supported in this network are 1.exam. "Pass Any Exam. so we know that this port must be an access port in VLAN 100.www. Any Time. 3 so either VTP version 2 or 3 can be configured on the new switch. QUESTION 102 You have been asked to install and configure a new switch in a customer network.com 92 Cisco 300-115 Exam http://www.actualtests. leaving only choice D as correct. This leaves only choice D and E. 2. We also see from the topology diagram that eth 0/0 of the new switch connects to a PC in VLNA 100." .com .So we know that the VTP domain must be CCNP. Use the console access to the existing and new switches to configure and verify correct device configuration.

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exam." .actualtests.www. Any Time.com .com 93 Cisco 300-115 Exam http://www."Pass Any Exam.

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Any Time.exam." ."Pass Any Exam.actualtests.com 94 Cisco 300-115 Exam http://www.com .www.

com .Refer to the configuration.exam. VLAN1 VLAN 99 VLAN 999 VLAN 40 VLAN 50 http://www. For which configured VLAN are untagged frames sent over trunk between SW1 and SW2? A. B. C. E. D.

actualtests. VLAN 300 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: The native VLAN is used for untagged frames sent along a trunk." . "Pass Any Exam.com 95 Cisco 300-115 Exam http://www.exam. Any Time.com .F.www. By issuing the "show interface trunk" command on SW1 and SW2 we see the native VLAN is 99. VLAN 200 G.

exam.exam.com . Use the console access to the existing and new switches to configure and verify correct device configuration.com/ http://www.QUESTION 103 You have been asked to install and configure a new switch in a customer network. http://www.

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SW2 and SW4 http://www.exam. B.com . VLAN500 and VLAN600 to the topology in such way that you need to configure SW1 as primary root for VLAN 500 and secondary for VLAN 600 and SW2 as primary root for VLAN 600 and secondary for VLAN 500.You are adding new VLANs. Which configuration step is valid? A. Configure VLAN 500 & VLAN 600 on both SW1 & SW2 Configure VLAN 500 and VLAN 600 on SW1 only Configure VLAN 500 and VLAN 600 on SW2 only Configure VLAN 500 and VLAN 600 on SW1 . C. D.

exam. On SW2. but SW4 is a client.www. configure vtp mode as off and configure VLAN 500 and VLAN 600.com 98 Cisco 300-115 Exam E. http://www." . Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: By issuing the "show vtp status command on SW2. so we will need to add both VLANs to SW1 and SW2. Any Time."Pass Any Exam. configure back to vtp server mode.actualtests.com . and SW4 we see that both SW1 and SW2 are operating in VTP server mode. SW2.

com .http://www.exam.

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exam.com 100 Cisco 300-115 Exam http://www.actualtests." . "Pass Any Exam.www. Use the console access to the existing and new switches to configure and verify correct device configuration.com .QUESTION 104 You have been asked to install and configure a new switch in a customer network. Any Time.

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com 101 Cisco 300-115 Exam http://www.www. Any Time.com .exam.actualtests."Pass Any Exam." .

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B.com .Examine the VTP configuration.exam. Disable VTP pruning on SW1 only Disable VTP pruning on SW2 only Disable VTP pruning on SW4 only Disable VTP pruning on SW2. Which of the following configuration steps will allow creating private VLANs? A. D. SW4 and New_Switch http://www. C. You are required to configure private VLANs for a new server deployment connecting to the SW4 switch.

actualtests.www. D. B. 3. Infrastructure Security QUESTION 105 A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping "Pass Any Exam. A DHCP snooping database agent should be configured. Ensure that DHCP server is connected through a trusted interface. Topic 2. Enable DHCP snooping on at least one VLAN. only SW4 will connect to servers in a private VLAN. the trust state of all interfaces is untrusted. you will need to only disable pruning on the switch that contains the private VLANs. Disable Option 82 for DHCP data insertion. 2. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Minimum DHCP Snooping Configuration The minimum configuration steps for the DHCP snooping feature are as follows: 1. By default. Apply ip dhcp snooping trust on all interfaces with dynamic addresses. In this case. Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting. Define and configure the DHCP server." . E. Enable DHCP snooping for all VLANs that are associated with the switch. DHCP snooping is inactive on all VLANs. Any Time. Disable VTP pruning on New_Switch and SW4 only.E.exam. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: To create private VLANs.com 103 Cisco 300-115 Exam database. What is the solution to avoid the snooping database from being rebuilt after every device reboot? A. C.com . By default. http://www.

Enable DHCP snooping globally.com/blog/data-center/what-is-aaa-and-how-do-you-configure.actualtests." . B. Reference: http://www.techrepublic.cisco. The feature is not active until you complete this step. C. 5.com .com/en/US/docs/switches/lan/catalyst6500/ios/12. Configure the DHCP snooping database agent.exam. B. C. Any Time. D.4. (config)# aaa authentication login default radius local (config)# aaa authentication login login radius local (config)# aaa authentication login default local radius (config)# aaa authentication login radius local Correct Answer: B Section: (none) http://www. authorization authentication accounting auditing Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. This step ensures that database entries are restored after a restart or switchover.html#wp1090479 QUESTION 106 Which portion of AAA looks at what a user has access to? A.com 104 Cisco 300-115 Exam AAA consists of the following three elements: Reference: http://www.www.it-in-the-cisco-ios/ QUESTION 107 Which command creates a login authentication method named "login" that will primarily use RADIUS and fail over to the local user database? A.2SX/configuration/guide/snood hcp. D.

Reference: http://www.2_55_se/configuration/guide/scg3750/swdynarp. B. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable.html http://www.com 105 Cisco 300-115 Exam Dynamic ARP inspection is a security feature that validates ARP packets in a network. ·Drops invalid ARP packets Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database. Which solution ensures that the server maintains network reachability in the future? A. C. QUESTION 108 A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping.exam. Configure a static DHCP snooping binding entry on the switch. and discards ARP packets with invalid IP-to-MAC address bindings. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed.www. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify mac.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12. the switch forwards the packet only if it is valid. the DHCP snooping binding database. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam.com . the switch forwards the packet without any checks. Trust the interface that is connected to the server with the ip dhcp snooping trust command. configure a static DHCP snooping binding entry on the switch. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. On untrusted interfaces. Disable DHCP snooping information option. To ensure network reachability to the server. If the ARP packet is received on a trusted interface. D. logs.Explanation Explanation/Reference: Explanation: In the command "aaa authentication login login radius local" the second login is the name of the AAA method. It intercepts. It also lists radius first then local. The switch performs these activities: ·Intercepts all ARP requests and responses on untrusted ports ·Verifies that each of these intercepted packets has a valid IP-to-MAC address binding before updating the local ARP cache or before forwarding the packet to the appropriate destination.actualtests.address command. For more protection against malicious attacks." . Any Time. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. This capability protects the network from certain man-in-the-middle attacks.

Private VLANs also carry TLVs that are not known to all types of Cisco switches.QUESTION 109 A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. Any Time. C. The interface that is connected to the workstation in question will be put into the errdisabled state. Traffic will pass accordingly after the new IP address is populated into the binding database. D.exam.asp?p=29803&seqNum=6 "Pass Any Exam. Private VLANs are configured in the context of a single switch and cannot have members on other switches. Disable VTP and manually assign VLANs.www." . Which statement describes the outcome of this scenario? A. Reference: http://www. B. D. The IP address of one of the workstations does not match any entries found in the DHCP binding database. C. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: You must configure VTP to transparent mode before you can create a private VLAN. B.com/articles/article. Enable VTP version 3.com . Packets from the workstation will be rate limited according to the default values set on the switch.actualtests. Which configuration must be made before the private VLAN is configured? A. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: http://www. Configure VTP Transparent Mode. The packets originating from the workstation are assumed to be spoofed and will be discarded.ciscopress. Ensure all switches are configured as VTP server mode.com 106 Cisco 300-115 Exam QUESTION 110 DHCP snooping and IP Source Guard have been configured on a switch that connects to several client workstations.

clients are not receiving an IP address via the DHCP server. The switch forwards IP traffic when the source IP address matches an entry in the DHCP snooping binding database or a binding in the IP source binding table. When IP source guard is enabled with this option. Which option is the cause of the problem? http://www. The DHCP server does not support information option 82.switches/72846-layer2-secftrs-catl3fixed. B. Which option is the cause of this issue? A. IP traffic is filtered based on the source IP address. When IP source guard is enabled with this option. The switch uses the IP source binding table only wIen IP source guard is enabled. You can configure IP source guard with source IP address filtering. Reference: http://www. The DHCP client interfaces have storm control configured. or the client is not assigned an IP address.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12. using the ip verify source port-security interface configuration command.com . IP Source Guard with the ip verify source port-security command is configured under the interfaces that connect to all DHCP clients on the switch. there are two caveats: ·The DHCP server must support option 82. or with source IP and MAC address filtering.The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). and its associated VLAN number. An entry in this table has an IP address. IP traffic is filtered based on the source IP and MAC addresses. "Pass Any Exam. the packets are assumed to be spoofed and will be discarded.html#wp1069615 QUESTION 112 A switch is added into the production network to increase port capacity. but is unable to configure ip verify source under several of the interfaces. Static DHCP bindings are not configured on the switch. However. D.actualtests. Reference: http://www. Any Time.2_25_see/configuration/guide/3550SCG/ swdhcp82.html#ipsourceguard QUESTION 111 A DHCP configured router is connected directly to a switch that has been provisioned with DHCP snooping.www. even if they are not utilized for dynamic address allocation. If there is no match.com 107 Cisco 300-115 Exam C." . The MAC address of the DHCP client is learned as a secure address only when the switch receives non-DHCP data traffic.cisco. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: When you enable both IP Source Guard and Port Security. DHCP snooping must be enabled on all VLANs.exam. The switch forwards traffic only when the source IP and MAC addresses match an entry in the IP source binding table. A network engineer is configuring the switch for DHCP snooping and IP Source Guard. ·The MAC address in the DHCP packet is not learned as a secure address. its associated MAC address.

com 108 Cisco 300-115 Exam interface.cisco.actualtests. except for DHCP packets allowed by DHCP snooping. D. and its associated VLAN number. C. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: IP source guard is a security feature that restricts IP traffic on nonrouted. IP source guard is supported only on Layer 2 ports. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic.exam. The interfaces are configured as Layer 3 using the no switchport command. Only broadcast traffic is limited by this particular storm control configuration.) A. E. You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering.A. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth. In which three ways does this command impact the traffic? (Choose three. An entry in this table has an IP address. The local DHCP server is disabled prior to enabling IP Source Guard. http://www. E.www.html#wp1069615 QUESTION 113 The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). B. Layer 2 interfaces by filtering traffic based on the DHCP snooping binding database and on manually configured IP source bindings. B. D. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. A port access control list (ACL) is applied to the interface. The switch is configured for sdm prefer routing as the switched database management template. the switch blocks all IP traffic received on the "Pass Any Exam. C." . You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. The configured SVIs on the switch have been removed for the associated interfaces.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12. The switch resumes forwarding broadcasts when they are below 65% of bandwidth. Reference: http://www.com . After IP source guard is enabled on an interface. its associated MAC address. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor. including access and trunk ports. Any Time.2_25_see/configuration/guide/3550SCG/ swdhcp82. The switch uses the IP source binding table only when IP source guard is enabled.

com . The keywords have these meanings: For level. multicast.00 to 100.html QUESTION 114 After port security is deployed throughout an enterprise campus.exam.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12. multicast.00." .www. specify the rising threshold level for broadcast. · "Pass Any Exam. The range is 0.cisco. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. Any Time. storm control is disabled. or unicast traffic as a percentage (up to two decimal places) of the bandwidth. This value must be less than or equal to the rising suppression value. Correct Answer: CDF Section: (none) Explanation Explanation/Reference: Explanation: storm-control {broadcast | multicast | unicast} level {level [level-low] | pps pps [pps-low]} Configure broadcast.com 109 Cisco 300-115 Exam (Optional) For level-low. The range is 0. The port blocks traffic when the rising threshold is reached. B. Which command accomplishes this task? A.00. D. switch(config)# errdisable recovery interval 180 switch(config)# errdisable recovery cause psecure-violation switch(config)# switchport port-security protect switch(config)# switchport port-security aging type inactivity switch(config)# errdisable recovery cause security-violation http://www. or unicast storm control. E. By default. The port forwards traffic when traffic drops below this level.00 to 100.actualtests. They decide to configure the network to automate the process of re-enabling user ports. If you do not configure a falling suppression level. In this case.F. the broadcast keyword was used so only broadcast traffic is limited. C. the network team has been overwhelmed with port reset requests. The switch drops broadcasts when they reach 75% of bandwidth. Reference: http://www.2_25_see/configuration/guide/3550SCG/swtrafc. it is set to the rising suppression level.

) A. B. switch# show mac address-table switch# show port-security switch# show ip verify source switch# show ip arp inspection switch# show mac address-table address <mac address> Correct Answer: AE Section: (none) Explanation Explanation/Reference: Explanation: These two commands will show the MAC address table.www.2/53SG/configuration/config/port_sec.com/c/en/us/td/docs/switches/lan/catalyst4500/12. E. Here is an example output: Switch> show mac-address-table Dynamic Addresses Count: 9 Secure Addresses (User-defined) Count: 0 Static Addresses (User-defined) Count: 0 System Self Addresses Count: 41 http://www. you can bring it out of this state automatically by configuring the errdisable recovery cause psecure-violation global configuration command or you can manually reenable it by entering the shutdown and no shut down interface configuration commands. If a port is in per-VLAN errdisable mode. Any Time. including the switch port that the particular host is using. D.Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: When a secure port is in the error-disabled state.com .pdf QUESTION 115 "Pass Any Exam.actualtests. This is the default mode. Reference: http://www.cisco." .exam. C.com 110 Cisco 300-115 Exam The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. Which two commands help trace this PC when the MAC address is known? (Choose two. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port. You can also customize the time to recover from the specified error disable cause (default is 300 seconds) by entering the errdisable recovery interval interval command.

aaa authentication C.---. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. or unicast storm on a port.com . B.7b00.7b00. aaa new-model B. aaa authorization http://www.0010.1540 Dynamic 2 FastEthernet0/5 0010. D. C.1545 Dynamic 2 FastEthernet0/5 QUESTION 116 While troubleshooting a network outage. storm control SDM routing Cisco IOS parser integrated routing and bridging Dynamic ARP Inspection "Pass Any Exam. A LAN storm occurs when packets flood the LAN. Storm control uses rising and falling thresholds to block and then restore the forwarding of broadcast. Errors in the protocol-stack implementation. or users issuing a denial-of-service attack can cause a storm.exam.www. E.com 111 Cisco 300-115 Exam Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Storm control prevents traffic on a LAN from being disrupted by a broadcast.-----------.0de0. By default.actualtests. mistakes in network configuration. creating excessive traffic and degrading network performance.-------------------. Which option decreases consumption of bandwidth used by broadcast traffic? A. Storm control is configured for the switch as a whole but operates on a per-port basis. multicast. storm control is disabled. You can also set the switch to shut down the port when the rising threshold is reached." .e289 Dynamic 1 FastEthernet0/1 0010.html QUESTION 117 Which command globally enables AAA on a device? A. or multicast packets. Reference: http://www. unicast.Total MAC addresses: 50 Non-static Address Table: Destination Address Address Type VLAN Destination Port ------------------.1_22ea/SCG/scg/swtrafc. Any Time.cisco.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12.

Any Time. Cisco IOS software uses the first method listed to authorize users for specific network services. This process continues until there is successful communication with a listed authorization method. SLIP. D.com . Reference: http://www. C. AAA features are not available for use until you enable AAA globally by issuing the aaa new-model command. A method list is simply a named list describing the authorization methods to be queried (such as RADIUS or TACACS+).D. aaa accounting Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: To configure AAA authentication. and ARAP connections? "Pass Any Exam. B.cisco. thus ensuring a backup system in case the initial method fails. refer to the chapter "Configuring Authentication Proxy" in the "Traffic Filtering"and Firewalls" part of this book" http://www.actualtests.com 112 Cisco 300-115 Exam A.www. Method lists enable you to designate one or more security protocols to be used for authorization. For detailed information on the authentication proxy feature.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathen. Method lists are specific to the authorization type requested: ·Auth-proxy--Applies specific security policies on a per-user basis.html QUESTION 118 Which AAA Authorization type includes PPP.exam." . in sequence. or all methods defined are exhausted. network IP mobile EXEC auth-proxy Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Method lists for authorization define the ways that authorization will be performed and the sequence in which these methods will be performed. if that method fails to respond. enable AAA by using the aaa new-model global configuration command. the Cisco IOS software selects the next method listed in the method list.

RADIUS using VSA Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: With 802.cisco.1_19_ea1/configuration/guide/2940scg_1/sw8021x.cisco.actualtests. RADIUS with CoA D. SLIP. When you create a named method list. including global configuration commands. you are defining a particular list of authorization methods for the indicated authorization type. This can include a PPP. TACACS+ "Pass Any Exam.1x. or ARAP connection.·Comma"ds--Applies to the EXEC mode com"ands a user issues. Command authorization attempts authorization for all EXEC mode commands. RADIUS with EAP Extension B.com 113 Cisco 300-115 Exam C. ·Reverse Access--Applies to reverse Telnet sessions. ·EXEC--Applies to the attributes associated with a user EXEC terminal session.exam. associated with a specific privilege level.com/c/en/us/td/docs/switches/lan/catalyst2940/software/release/12. The Remote Authentication Dial-In User Service (RADIUS) security system with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server.1x? A. the authentication service is transparent to the client. The authentication server validates the identity of the client and notifies the switch whether or not the client is authorized to access the LAN and switch services. the authentication server--performs the actual authentication of the client. Because the switch acts as the proxy.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathor. Reference: http://www. ·Network--Applies to network connections.www.html QUESTION 119 Which authentication service is needed to configure 802. Reference: http://www.pdf QUESTION 120 Refer to the exhibit.com . Any Time." . http://www.

Which login credentials are required when connecting to the console port in this output? A. QUESTION 121 Refer to the exhibit. B.com . http://www.www." . none required 115sernamee cisco with password cisco no username with password linepass login authentication default "Pass Any Exam. which lists none as the authentication method.actualtests. None means no authentication. meaning that credentials are not required and all sessions are allowed access immediately. C. D. Any Time.com 114 Cisco 300-115 Exam Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Here the console has been configured with the NO_AUTH name.exam.

RADIUS server. RADIUS server.actualtests. line password RADIUS server. local username Line password." . B. Finally. Any Time. so here the "aaa authentication login default group radius local line" means to use RADIUS first.exam. local username. RADIUS server Line password.www. local username Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: sessions use the vty lines.com .com 115 Cisco 300-115 Exam database. then if that fails use the local user "Pass Any Exam. in which order does the device check the login credentials? A. C. if that fails use the line password. QUESTION 122 http://www. local username. D.When a network administrator is attempting an SSH connection to the device." The AAA default login preference is stated in order from first to last. where the configured authentication method is named "default. line password.

exam. C.Which type of information does the DHCP snooping binding database contain? A. which contains information about untrusted hosts with leased IP addresses. Reference: http://www.com .com/ A.2SX/configuration/guide/book/snoodhcp. · Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts.exam. Dynamic ARP Inspection storm control VTP pruning DHCP snooping Correct Answer: A http://www. The DHCP snooping feature performs the following activities: · Validates DHCP messages received from untrusted sources and filters out invalid messages. B. untrusted hosts with leased IP addresses trusted hosts with leased IP addresses untrusted hosts with available IP addresses trusted hosts with available IP addresses Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. · Rate-limits DHCP traffic from trusted and untrusted sources.pdf QUESTION 123 Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? http://www.cisco. D.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. · Builds and maintains the DHCP snooping binding database. C. D. B.

cisco. ·Before globally enabling DHCP snooping on the switch. If the ARP packet is received on a trusted interface. Reference: http://www. the switch forwards the packet only if it is valid. Any Time. Reference: http://www." .www.com . make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled.exam. the DHCP snooping binding database.Section: (none) Explanation Explanation/Reference: Explanation: Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database. B.com 117 Cisco 300-115 Exam QUESTION 125 Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. C. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command.com/c/en/us/support/docs/switches/catalyst-3750-series.2SX/configuration/guide/book/snoodhcp. D.switches/72846-layer2-secftrs-catl3fixed. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. ·If a Layer 2 LAN port is connected to a DHCP server.html "Pass Any Exam. and enable DHCP globally on the switch. On untrusted interfaces. follow these guidelines: ·DHCP snooping is not active until you enable the feature on at least one VLAN.actualtests. the switch forwards the packet without any checks.html QUESTION 124 Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. ip dhcp snooping trust ip dhcp snooping ip dhcp trust ip dhcp snooping information Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: When configuring DHCP snooping. ·If a Layer 2 LAN port is connected to a DHCP client.cisco. including the community and isolated host ports? http://www.

C. B. You can have more than one isolated port in a specified isolated VLAN. D.actualtests.exam. This port has complete isolation from other ports within the same private VLAN domain. You can have several promiscuous ports in a primary VLAN. The promiscuous port can communicate with all interfaces. including the community and isolated host ports. except that it can communicate with associated promiscuous ports. D.www. These interfaces are isolated from all other interfaces in other communities and from all isolated ports within the private VLAN domain. associated to that port. Reference: http://www.A. ·Isolated--An isolated port is a host port that belongs to an isolated secondary VLAN." . B. promiscuous port isolated port community port trunk port Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: The types of private VLAN ports are as follows: ·Promiscuous--A promiscuous port belongs to the primary VLAN. You can also have secondary VLANs that are not associated to any promiscuous port.com 118 Cisco 300-115 Exam QUESTION 126 Which private VLAN can have only one VLAN and be a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports and the gateway? A. You can associate a secondary VLAN to more than one promiscuous port. Traffic received from an isolated port is forwarded only to promiscuous ports. Any Time. as long as the promiscuous port and secondary VLANs are within the same primary VLAN. or no secondary VLANs. C. Each promiscuous port can have several secondary VLANs.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/C LIConfigurationGuide/PrivateVLANs.balancing or redundancy purposes. ·Community--A community port is a host port that belongs to a community secondary VLAN.html "Pass Any Exam. isolated VLAN primary VLAN community VLAN promiscuous VLAN http://www. that belong to those secondary VLANs associated to the promiscuous port and associated with the primary VLAN. Community ports communicate with other ports in the same community VLAN and with associated promiscuous ports.com . Each port is completely isolated from all other ports in the isolated VLAN. Private VLANs block all traffic to isolated ports except traffic from promiscuous ports.cisco. You may want to do this for load.

· Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or http://www. and the traffic from each isolated port also remains completely separate. static ARP database Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Information About Dynamic ARP Inspection DAI is used to validate ARP requests and responses as follows: · Intercepts all ARP requests and responses on untrusted ports.Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Understanding Primary.The primary VLAN carries traffic from the promiscuous ports to the host ports.html QUESTION 127 Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. The ports within one community can communicate. and Community Private VLANs Primary VLANs and the two types of secondary VLANs (isolated and community) have these characteristics: ·Primary VLAN-. Reference: http://www.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/C LIConfigurationGuide/PrivateVLANs. dynamic routing database D.cisco. and to other promiscuous ports. dynamic ARP database "Pass Any Exam. DHCP snooping database B. ·Isolated VLAN --An isolated VLAN is a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports. Each isolated VLAN can have several isolated ports.www.com 119 Cisco 300-115 Exam C. Isolated. You can configure multiple isolated VLANs in a private VLAN domain. all the traffic remains isolated within each one. Any Time. but these ports cannot communicate with ports in any other community or isolated VLAN in the private VLAN." . both isolated and community. You can configure multiple community VLANs in a private VLAN domain. ·Community VLAN--A community VLAN is a secondary VLAN that carries upstream traffic from the community ports to the promiscuous port and to other host ports in the same community.com .actualtests.exam.

" . · When IP source guard with source IP filtering is enabled on an interface.exam. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15.cisco.forwarding the packet.cisco. which feature must be enabled on the access VLAN for that interface? A. · Drops invalid ARP packets.html QUESTION 128 When IP Source Guard with source IP filtering is enabled on an interface.com . If you enter the ip source binding mac-address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface. · You can enable this feature when 802. DHCP snooping storm control spanning-tree portfast private VLAN Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: IP Source Guard Configuration Guidelines · You can configure static IP bindings only on nonrouted ports. DHCP snooping "Pass Any Exam. This database is built by DHCP snooping when it is enabled on the VLANs and on the device.x_cg_chapter_01110. C.html QUESTION 129 Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic? http://www. Reference: http://www. D.actualtests. B. Any Time. this error message appears: Static IP source binding can only be configured on switch port.0_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/ b_sec_152ex_2960. · If you are enabling IP source guard on a trunk interface with multiple VLANs and DHCP snooping is enabled on all the VLANs. Reference: http://www.com/c/en/us/td/docs/switches/datacenter/nexus1000/hyperv/sw/5_2_1_s_m_1_5 _2/troubleshooting/configuration/guide/n1000v_troubleshooting/ n1000v_trouble_19dhcp.1x port-based authentication is enabled.www. the source IP address filter is applied on all the VLANs. It may also contain static entries that you have created.com 120 Cisco 300-115 Exam must be enabled on the access VLAN for that interface.

pdf QUESTION 130 Which command would a network engineer apply to error-disable a switchport when a packet.A. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack.com . which creates excessive traffic and degrades network performance. B. router(config-if)#storm-control action error D. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast.storm is detected? A. perform this task: Command http://www.com/c/en/us/td/docs/routers/7600/ios/122SR/configuration/guide/swcg/dos. multicast. C. Any Time.com 121 Cisco 300-115 Exam C.www.actualtests. router(config-if)#storm-control action trap "Pass Any Exam. Reference: http://3c3cc." . D. storm control port security VTP pruning VLAN trunking Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: A traffic storm occurs when packets flood the LAN. router(config-if)#storm-control action enable Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface. router(config-if)#storm-control action shutdown B.exam.

or the shutdown and no shutdown commands to reenable ports.com .1x to secure the IP address that port security authenticates.Purpose Step 1 Router(config)# interface {{type1 slot/port} | {port-channel number}} Selects an interface to configure. Enter the no storm-control action shutdown command to revert to the default action (drop).1X authenticates.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx. Which option describes what this configuration allows? A.html QUESTION 131 A network engineer configures port security and 802. Step 2 Router(config-if)# storm-control action shutdown (Optional) Configures traffic storm control to error-disable ports when a traffic storm occurs.www. It allows port security to secure the IP address that 802.1X is already preventing inbound traffic on the interface from unknown MAC addresses.exam.html QUESTION 132 http://www.cisco.2SX/configuration/guide/book/storm.os/security/configuration/guide/sec_nx-os-cfg/sec_portsec. Reference: http://www.cisco. It allows 802. so when you enable both on an interface. D.com 122 Cisco 300-115 Exam You can configure port security and 802. It allows 802. · Use the error disable detection and recovery feature. 802. B. Any Time. Port security secures the MAC addresses that 802. It allows port security to secure the MAC address that 802.1X on the same interfaces.1x authenticates.1X processes packets before port security processes them.1x authenticates. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.1X and Port Security "Pass Any Exam.1x on the same interface. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: 802.1x to secure the MAC address that port security authenticates. C.actualtests. 802." .

cisco. D.2/25ew/configuration/guide/conf/port_sec.pdf QUESTION 133 On which interface can port security be configured? http://www. stored in the address table.com .exam.com/ A.com 123 Cisco 300-115 Exam D. and added to the running configuration? A. EtherChannel port group "Pass Any Exam." . These can be dynamically learned or manually configured. Although sticky secure addresses can be manually configured. the interface does not need to dynamically relearn them when the switch restarts. and added to the running configuration. Any Time.Which feature describes MAC addresses that are dynamically learned or manually configured.www. sticky dynamic static secure Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: With port security. If these addresses are saved in the configuration file. Reference: http://www. B.actualtests. C.com/c/en/us/td/docs/switches/lan/catalyst4500/12. you can configure MAC addresses to be sticky. static trunk ports B. dynamic access point Correct Answer: A http://www.exam. stored in the address table. destination port for SPAN C. it is not recommended.

promiscuous community isolated trunked Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. C. Reference: http://www." . D. VLAN maximums are not useful for access ports. Details about port security and different types of interfaces or ports are as follows: ·Access ports--You can configure port security on interfaces that you have configured as Layer 2 access ports. which type of port must you configure the gateway router port as? http://www. Reference: http://en. Any Time. The device allows VLAN maximums only for VLANs associated with the trunk port. B.os/security/configuration/guide/sec_nx-os-cfg/sec_portsec.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx.actualtests.org/wiki/Private_VLAN "Pass Any Exam. ·SPAN ports--You can configure port security on SPAN source ports but not on SPAN destination ports.www. ·Trunk ports--You can configure port security on interfaces that you have configured as Layer 2 trunk ports. ·Ethernet Port Channels--Port security is not supported on Ethernet port channels. which port type connects the switch to the gateway router? A. On an access port. port security applies only to the access VLAN.Section: (none) Explanation Explanation/Reference: Explanation: Port Security and Port Types You can configure port security only on Layer 2 interfaces.com .wikipedia.exam.cisco.html QUESTION 134 When you configure private VLANs on a switch.com 124 Cisco 300-115 Exam QUESTION 135 When you configure a private VLAN. Host port further divides in two types Isolated port (I-Port) and Community port (C-port).

DSW1 and ASW1. B. · Packets from devices in any other address range should be dropped on VLAN 20.40.46 · Radius key: rad123 · Authentication should be implemented as close to the host as possible. Reference: http://en.A. promiscuous port isolated port community port access port Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. D.0/24 should be allowed on VLAN 20.40.wikipedia.40.com . · Packets from devices in the subnet of 172. Authentication is to be done via a Radius server: · Radius server host: 172. Corporate polices do not allow layer 3 functionality to be enabled on the switches. VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server.org/wiki/Private_VLAN QUESTION 136 CORRECT TEXT SWITCH. http://www. C. For security reasons. · Devices on VLAN 20 are restricted to the subnet of 172. · Filtering should be implemented as close to the serverfarm as possible.0/24.120.exam. The topology diagram indicates their layer 2 mapping.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches. Host port further divides in two types Isolated port (I-Port) and Community port (C-port).120.120. it is necessary to restrict access to VLAN 20 in the following manner: · Users connecting to VLAN 20 via portfO/1 on ASW1 must be authenticated before they are given access to the network.

You must "Pass Any Exam.actualtests.exam. Any Time.www. You have been tasked with implementing the above access control as a pre-condition to installing the servers.com 125 Cisco 300-115 Exam use the available IOS switch features.com . http://www." .The Radius server and application servers will be installed at a future date.

com 126 Cisco 300-115 Exam http://www."Pass Any Exam.com .exam. Any Time." .actualtests.www.

A.com . B. Correct Answer: Section: (none) Explanation Explanation/Reference: Answer: The configuration: Step1: Console to ASW1 from PC console 1 ASW1(config)#aaa new-model http://www.exam. D. C.

40.46 key rad123 ASW1(config)#aaa authentication dot1x default group radius ASW1(config)#dot1x system-auth-control ASW1(config)#inter fastEthernet 0/1 ASW1(config-if)#switchport mode access ASW1(config-if)#dot1x port-control auto ASW1(config-if)#exit ASW1#copy run start Step2: Console to DSW1 from PC console 2 DSW1(config)#ip access-list standard 10 DSW1(config-ext-nacl)#permit 172.www.255 DSW1(config-ext-nacl)#exit DSW1(config)#vlan access-map PASS 10 DSW1(config-access-map)#match ip address 10 DSW1(config-access-map)#action forward DSW1(config-access-map)#exit DSW1(config)#vlan access-map PASS 20 DSW1(config-access-map)#action drop DSW1(config-access-map)#exit DSW1(config)#vlan filter PASS vlan-list 20 DSW1#copy run start "Pass Any Exam.39.120.ASW1(config)#radius-server host 172.com ." .com 127 Cisco 300-115 Exam Topic 3. D. C.0 0.actualtests. B.120.0. Any Time.exam. Infrastructure Services QUESTION 137 Which configuration command ties the router hot standby priority to the availability of its interfaces? A. standby group standby priority backup interface standby track Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: The standby track interface configuration command ties the router hot standby priority to the availability of its interfaces and is useful for tracking interfaces that are http://www.0.

not configured for HSRP. http://www. For each interface configured for hot standby. the hot standby priority on the device on which tracking has been configured decreases by 10. The highest number represents the highest priority.com/en/US/docs/switches/lan/catalyst3550/software/release/12. Use the no form of the command to restore the default values. the default priority is 100.1_19_ea1/config uration/guide/swhsrp. D. Any Time. (Optional) group-number--The group number to which the command applies.exam. The range is 1 to 255. you can configure a separate list of interfaces to be tracked.www. its state changes do not affect the hot standby priority of the configured device. · router. it assumes control as the active router. If an interface is not tracked. C.html QUESTION 138 What is the default HSRP priority? A. When a tracked interface fails.com ." . B. · (Optional) delay--Set to cause the local router to postpone taking over the active role for the shown number of seconds.com 128 Cisco 300-115 Exam standby [group-number] priority priority [preempt [delay delay]] Set a priority value used in choosing the active router. Reference: http://www. 50 100 120 1024 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam.actualtests. The range is 0 to 36000 (1 hour). the default is 0 (no delay before taking over).cisco.

The VSS system creates a single logical router at Layer 3.html#wp1044327 QUESTION 139 Which option is a benefit of using VSS? A.com/en/US/docs/switches/lan/catalyst3550/software/release/12.com 129 Cisco 300-115 Exam QUESTION 140 Which First Hop Redundancy Protocol is an IEEE Standard? A. VSS eliminates the need for FHRP at the aggregation layer of the data center.hop role without the need for a dedicated protocol. This VSS routing instance fulfills this first.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate.actualtests.exam. C." . C.com .www. Reference: http://www.html "Pass Any Exam. Any Time. B.1_19_ea1/config uration/guide/swhsrp. GLBP HSRP VRRP OSPF Correct Answer: C Section: (none) Explanation Explanation/Reference: http://www. D. B. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes.cisco.Reference: http://www. reduces cost simplifies configuration provides two independent supervisors with two different control planes removes the need for a First Hop Redundancy Protocol Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: First Hop Redundancy Protocols (FHRPs) such as VRRP and HSRP were designed to allow for a highly available first IP route hop for host systems. D. The VSS IP route is highly available due to MEC and the resiliency of the VSS system.

Use virtual ip address.1 or more backup routers.." . Any Time. .up to 4 AVF routers on the group (Active Virtual Forwarder) passing traffic.www. Scope Cisco proprietary IEEE standard Cisco proprietary Election Active Router:1-Highest Priority2-Highest IP (tiebreaker) Master Router: (*)1-Highest Priority2-Highest IP (tiebreaker) Active Virtual Gateway:1-Highest Priority2Highest IP (tiebreaker) Optimization features Tracking yes "Pass Any Exam.. if not.Explanation: A comparison of the three First Hop Redundancy Protocols are listed below: ProtocolFeatures HSRP (Hot Standby Router protocol) VRRP (Virtual Redundancy Router Protocol) GLBP (Gateway Load Balancing Protocol) Router role .1 standby router..up to 1024 virtual routers (GLBP groups) per physical interface. .1 active router.Can use real router ip address.1 master router.. .com 130 Cisco 300-115 Exam yes yes Preempt yes yes yes Timer adjustments yes yes yes http://www.1 AVG (Active Virtual Gateway).com .exam..1 or more listening routers. .Use virtual ip address. .actualtests. the one with highest priority become master.

18 IP 112 224." .Multiple VRRP group per interface/SVI/routed int.www.com/2008/08/23/router-high-availability-protocol.0.0.0. 1 5 10 15 Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: http://www.0.comparison-2/ QUESTION 141 What is the default amount by which the hot standby priority for the router is decremented or "Pass Any Exam.0. Any Time.Traffic type 224. D. .com 131 Cisco 300-115 Exam incremented when the interface goes down or comes back up? A. Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing.Multiple HSRP group per interface/SVI/routed int. .Host-dependent algorithm.102 udp 3222 Timers Hello 3 seconds Advertisement 1 second Hello 3 seconds (Hold) 10 seconds (Master Down Interval)3 * Advertisement + skew time (Hold) 10 seconds (Skew time)(256-priority) / 256 Load-balancing functionality .. B. Reference: http://cciethebeginning. Load-balancing oriented.(generally through DHCP) Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing. C.actualtests.wordpress.(generally through DHCP) Clients are transparently updated with virtual MAC according to load-balancing algorithm through ARP requesting a unique virtual gateway.exam.102-udp 1985 (version2) 224.0.2 udp 1985 (version1)224.com .0.Weighted algorithm.0.Round-Robin algorithm (default).

The standby track interface configuration command ties the router hot standby priority to the availability of its interfaces and is useful for tracking interfaces that are not configured for HSRP.html QUESTION 142 What is the maximum number of virtual MAC addresses that GLBP allows per group? A.exam. Other group members request a virtual MAC address after they discover the AVG through hello messages. Other members of the GLBP group learn the virtual MAC addresses from hello messages.actualtests. the hot standby priority on the device on which tracking has been configured decreases by 10. When a tracked interface fails.cisco. Reference: http://www. The AVG is responsible for assigning the virtual MAC addresses to each member of the group. If an interface is not tracked. Any Time. active virtual forwarder http://www. Gateways are assigned the next MAC address in sequence.com/en/US/docs/switches/lan/catalyst3550/software/release/12.com . its state changes do not affect the hot standby priority of the configured device. For each interface configured for hot standby. D. C.1_19_ea1/config uration/guide/swhsrp." .html#wp1039651 QUESTION 143 Which gateway role is responsible for answering ARP requests for the virtual IP address in GLBP? A.cisco. 2 4 6 8 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: GLBP Virtual MAC Address Assignment A GLBP group allows up to four virtual MAC addresses per group. you can configure a separate list of interfaces to be tracked.www. A virtual forwarder that is assigned a virtual MAC address by the AVG is known as a primary virtual forwarder.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. A virtual forwarder that has learned the "Pass Any Exam. B.com 132 Cisco 300-115 Exam virtual MAC address is referred to as a secondary virtual forwarder. Reference: http://www.

com . active virtual gateway D. virtual router active D.com 133 Cisco 300-115 Exam C.B. Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address. virtual router backup "Pass Any Exam.actualtests. virtual router master B. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. Reference: http://www.html QUESTION 144 Which VRRP router is responsible for forwarding packets that are sent to the IP addresses of the virtual router? A. designated router Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: GLBP Active Virtual Gateway Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. virtual router standby Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: VRRP Definitions http://www. active virtual router C. Any Time.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.cisco.www." .exam. The AVG assigns a virtual MAC address to each member of the GLBP group.

will respond to packets addressed to one of these IP addresses for ICMP pings.actualtests. It may participate in one or more virtual routers. Primary IP Address An IP address selected from the set of real interface addresses.exam.txt "Pass Any Exam.ietf. and answering ARP requests for these IP addresses. C. A VRRP Router may backup one or more virtual routers. Any Time." .VRRP Router A router running the Virtual Router Redundancy Protocol. This is the router that. TCP connections. One possible selection algorithm is to always select the first address. Virtual Router An abstract object managed by VRRP that acts as a default router for hosts on a shared LAN. when up. etc. D. IP Address Owner The VRRP router that has the virtual router's IP address(es) as real interface address(es'. VRRP advertisements are always sent using the primary IP address as the source of the IP packet. Reference: http://www. It consists of a Virtual Router Identifier and a set of associated IP address(es) across a common LAN. Virtual Router Master The VRRP router that is assuming the responsibility of forwarding packets sent to the IP address(es) associated with the virtual router. Note that if the IP address owner is available.com .www. B.org/rfc/rfc3768. standby 1 track 100 standby 1 track 100 decrement 1 standby 1 track 100 decrement 5 standby 1 track 100 decrement 20 http://www.com 134 Cisco 300-115 Exam QUESTION 145 Which command correctly configures standby tracking for group 1 using the default decrement priority value? A. then it will always become the Master.

QUESTION 146 Which command configures an HSRP group to become a slave of another HSRP group? A. There is no need to explicitly state the value if the desired value is the default value.mgo.Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: The default decrement value for HSRP standby tracking is 10. D.com/en/US/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-hsrp. C. The "standby follow" command configures an HSRP group to become a slave of another HSRP group. Any Time.cisco. HSRP client groups follow the master HSRP with a slight. B.actualtests.com 135 Cisco 300-115 Exam QUESTION 147 Refer to the exhibit.com . Which option describes the reason for this message in a GLBP configuration? http://www.exam. random delay so that all client groups do not change at the same time. standby slave standby group track standby follow standby group backup Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Perform this task to configure multiple HSRP client groups.www." . Reference: http://www.html "Pass Any Exam.

http://www.0. then it indicates that this router is receiving its own hello packets sent. C.255. D. Inc. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. with an enterprise network (access. Any Time. is a medium sized company. Reference: http://www.0 15. permit the Multicast address by permit 224. When configuring the multicast boundary command. issue the show interface command to verify the MAC address of the interface.exam. If the interface MAC address is different from the one reported in the error message.102 and User Datagram Protocol (UDP) port 3222 (source and destination). If the MAC address of the interface is the same as the one reported in the error message.com 136 Cisco 300-115 Exam QUESTION 148 Ferris Plastics.com/en/US/products/hw/switches/ps708/products_configuration_example09186a 00807d2520. then some other device with a MAC address reports this error message.www. B.255.0. · DSW1 primary device for VLAN 101 VLAN 102 and VLAN 105 · DSW2 primary device for VLAN 103 and VLAN 104 · A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device.A.actualtests.shtml#dr "Pass Any Exam. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224. unless GigabitEthernet1/0/1 on backup device has also failed.255." .0. Unavailable GLBP active forwarder Incorrect GLBP IP address HSRP configured on same interface as GLBP Layer 2 loop Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: This section provides information you can use to troubleshoot your configuration. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.cisco. The distribution switches are configured to use HSRP to provide a high availability solution. In order to resolve this issue.com . Verify the spanning-tree topology and check if there is any layer2 loop.0.

you have been asked to investigate and respond to the following question.com 137 Cisco 300-115 Exam http://www." .www. Currently all interfaces are up.Troubleshooting has identified several issues.actualtests. "Pass Any Exam.exam. Any Time.com . Using the running configurations and show commands.

http://www.com .exam.

C. DSW1 did not become the active router for VLAN 101 as desired. In the VLAN 101 HSRP group on DSW1. Disable preempt in the VLAN 101 HSRP group on DSW2's. after GigabitEthemet1/0/1 on DSW1 was reactivated.actualtests.exam. What needs to be done to make the group for VLAN 101 function properly? A. D.com 138 Cisco 300-115 Exam the priority value configured in the VLAN 101 HSRP group on DSW2. Any Time. Enable preempt in the VLAN 101 HSRP group on DSW1.www. However. decrease the priority value to avaluethatis less ` than "Pass Any Exam." . B. Correct Answer: A http://www. Decrease the decrement value in the track command for the VLAN 101 HSRP group on U DSWTs to a values less than the value in the track command for the VLAN 101 HSRP group on DSW2. GigabitEthernet1/0/1 on DSW1 was shut down. DSW2 became the active HSRP device for VLAN 101 as desired.During routine maintenance.com . All other interfaces were up.

is a medium sized company. Inc. · DSW1 primary device for VLAN 101 VLAN 102 and VLAN 105 · DSW2 primary device for VLAN 103 and VLAN 104 · A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. "Pass Any Exam. Any Time. The distribution switches are configured to use HSRP to provide a high availability solution.exam.actualtests.Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 149 Ferris Plastics. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. unless GigabitEthernet1/0/1 on backup device has also failed.www. Currently all interfaces are up. you have been asked to investigate and respond to the following question. with an enterprise network (access.com 139 Cisco 300-115 Exam http://www. Troubleshooting has identified several issues.com ." . Using the running configurations and show commands.

http://www.exam.com .

actualtests.com 140 Cisco 300-115 Exam http://www.com ." . Any Time.www."Pass Any Exam.exam.

Correct Answer: C Section: (none) Explanation http://www. What needs to be done to make the group function properly? A. it became necessary to shut down the GigabitEthernet1/0/1 interface on DSW1.During routine maintenance. E. The decrement value on DSW1 should be greaterthan 5 and less than 15.exam. B. DSW1 remained the active device for the VLAN 102 HSRP group. All other interfaces were up. C. During this time. You have determined that there is an issue with the decrement value in the track command for the VLAN 102 HSRP group. The decrement value on DSWTs should be greaterthan 195 and less than 205. The decrement value on DSW1 should be greaterthan 11 and less than 19.com . 0 The decrement value on DSW1 should be greaterthan 9 and less than 15. The decrement value on DSWTs should be greaterthan 190 and less than 200. D.

unless GigabitEthernet1/0/1 on backup device has also failed. with an enterprise network (access.actualtests. The left Vlan102 is console1 of DS1. you have been asked to investigate and respond to the following question. Inc. Any Time. The distribution switches are configured to use HSRP to provide a high availability solution. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. Priority value is 200.com . Using the running configurations and show commands. · DSW1 primary device for VLAN 101 VLAN 102 and VLAN 105 · DSW2 primary device for VLAN 103 and VLAN 104 · A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. Troubleshooting has identified several issues.Explanation/Reference: Explanation: Use "show run" command to show.www. Because 200 11 = 189 < 190 "Pass Any Exam. QUESTION 150 Ferris Plastics. Currently all interfaces are up. we should decrement value in the track command from 11 to 18.com 141 Cisco 300-115 Exam (priority of Vlan102 on DS2)." . is a medium sized company. http://www.exam.

" .com 142 Cisco 300-115 Exam http://www.www.com .exam."Pass Any Exam.actualtests. Any Time.

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C. "Pass Any Exam.www.actualtests.All interfaces are active. decrease the priority value to a value less than 190 and greater than 150.com 143 Cisco 300-115 Exam Correct Answer: C Section: (none) Explanation http://www.exam. increase the decrement value in the track command to a value greater than 10 and less than 50. DSW2 has not become the active device for the VLAN 103 HSRP group. increase the priority value to a value greater 200 and less than 250.com . As related to the VLAN 103 HSRP group. B. Any Time. On DSW1. On DSW2. disable preempt. what can be done to make the group function properly? A. D. On DSW2." . On DSW1.

DSW1 will become active.Explanation/Reference: Explanation: From the output shown below of the HSRP status of DSW2. We need to increase the priority of DSW2 to greater than 200.com . while the local priority is 190. but it should be less than 250 so that if the gig 1/0/1 interface goes down. we see that the active router has a priority of 200.exam. DSW2 is configured to decrement the priority by 50 if this interface goes down. http://www. so the correct answer is to increase the priority to more than 200. but less than 250.

distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.com . Inc. http://www.exam. is a medium sized company. with an enterprise network (access. The distribution switches are configured to use HSRP to provide a high availability solution.QUESTION 151 Ferris Plastics.

exam.com 144 Cisco 300-115 Exam http://www." . Troubleshooting has identified several issues. you have been asked to investigate and respond to the following question.· DSW1 primary device for VLAN 101 VLAN 102 and VLAN 105 · DSW2 primary device for VLAN 103 and VLAN 104 http://www.www.com/ · A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. Any Time. Currently all interfaces are up.actualtests. "Pass Any Exam.com . Using the running configurations and show commands. unless GigabitEthernet1/0/1 on backup device has also failed.exam.

com .exam.http://www.

actualtests.com 145 Cisco 300-115 Exam http://www.exam.www. Any Time.com ."Pass Any Exam." .

increase the decrement value in the track command to a value greater than 6. decrease the decrement value in the track command to a value less than 1. DSW1 became the active router for the VLAN 104HSRP group. As related to the VLAN 104HSRP group.exam. On DSW2 decrease the priority value to a value less than 150. disable preempt. On DSW1. All other interfaces were up. On DSW1. C. During this time. B. what can to be done to make the group function properly? A. it became necessary to shut down the GigabitEthernet1/0/1 interface on DSW1 and DSW2. Correct Answer: C Section: (none) Explanation http://www. On DSW1.During routine maintenance.com . D.

com 146 Cisco 300-115 Exam 6 = 144.www. Example: if we are disable preempt on DS1. Using the running configurations and show commands. It can not become active device when G1/0/1 on DS2 fail. The distribution switches are configured to use HSRP to provide a high availability solution. Result is priority 144 < 145 (vlan104 on DS2 is active).Explanation/Reference: Explanation: We should NOT disable preempt on DS1. you will make Vlan104's HSRP group fail function. with an enterprise network (access. By do that. G0/1/0 on DS1 & DS2 is shutdown. http://www. Troubleshooting has identified several issues. Currently all interfaces are up. Vlan104 (left): 150 1 = 149. Vlan104 (left): 150 "Pass Any Exam. unless GigabitEthernet1/0/1 on backup device has also failed. Any Time. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. In this question. Result is priority 149 > 145 (Vlan104 on DS1 is active). · DSW1 primary device for VLAN 101 VLAN 102 and VLAN 105 · DSW2 primary device for VLAN 103 and VLAN 104 · A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. Vlan104 (right): 200 155 = 145.exam. Inc. is a medium sized company. QUESTION 152 Ferris Plastics.com ." .actualtests. If increase the decrement in the track value to a value greater than 6 (> or = 6). you have been asked to investigate and respond to the following question.

com .www. Any Time.exam." ."Pass Any Exam.actualtests.com 147 Cisco 300-115 Exam http://www.

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www.actualtests.com . B.com 148 http://www.What is the priority value of the VLAN 105 HSRP group on DSW2? A.exam. Any Time. 50 100 150 200 Correct Answer: B Section: (none) Explanation Explanation/Reference: "Pass Any Exam. C. D." .

is a medium sized company.primary device for VLAN 103 and VLAN 104 · A failureof GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. Currently all interfaces are up. Very easy to se" priority of Vlan1"5 is 100. · DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 · DW2 . with an enterprise network (access. you have been asked to investigate and respond to the following question. Troubleshooting has identified several issues.actualtests. "Pass Any Exam. unless GigabitEthernet1/0/1 on backup device has also failed. Using the running configurations and show commands. Any Time. The distribution switches are configured to use HSRP to provide a high availability solution.www." . QUESTION 153 Ferris Plastics.com 149 Cisco 300-115 Exam http://www. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.com .exam. Inc.Cisco 300-115 Exam Explanation: Use "show standby brief" command on console2.

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"Pass Any Exam.com .exam." .com 150 Cisco 300-115 Exam http://www.actualtests. Any Time.www.

If GigabitEthemet1/0/1 on DSW2 is shutdown.exam.com . 90 100 150 200 Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: http://www. what will be the resulting priority value of the VLAN 105 HSRP group on router DSW2? A. B. D. C.

Any Time.exam.com .actualtests. "Pass Any Exam. and the tracking feature for Gig 1/0/0 is enabled which will decrement the priority by 10 if this interface goes down for a priority value of 90.Explanation As seen below." .www.com 151 Cisco 300-115 Exam QUESTION 154 http://www. the current priority for VLAN 105 is 100.

Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.com . They have questions about how these two devices will perform in the event of a device failure. http://www.exam.

http://www.exam.com

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Cisco 300-115 Exam

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What percentage of the outgoing traffic from the 172.16.10.0/24 subnet is being forwarded through R1?
A.
B.
C.
D.

R1-0%
R1-50 %, R2-50%
R2-100%
R1-100%
"Pass Any Exam. Any Time." - www.actualtests.com 153

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Cisco 300-115 Exam
Correct Answer: D
Section: (none)
Explanation
Explanation/Reference:
Explanation:
Based on the following output, we see that R1 is the active standby router for the Ethernet 0/0 link, so all outgoing traffic will be forwarded to R1.

http://www.exam.com

actualtests.com . They have questions about how these two devices will perform in the event of a device failure.com 154 Cisco 300-115 Exam http://www.exam." . "Pass Any Exam. Any Time.www.QUESTION 155 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.

http://www.com .exam.

actualtests.com . Any Time." ."Pass Any Exam.com 155 Cisco 300-115 Exam http://www.exam.www.

Refer to the exhibit.exam. D. If router R1 interface Etherne0/0 goes down and recovers.com . E. The interface will have the priority decremented by 60 for HSRP group 1 The interface will have its current priority incremented by 40 for HSRP group 1 The interface will have its current priority incremented by 60 for HSRP group 1 The interface will default to the a priority of 100 for HSRP group 1 http://www. which of the statement regarding HSRP priority is true? A. C. B. The interface will have the priority decremented by 40 for HSRP group 1.

it will then increment it by 40 back to 130 for HSRP group 1.com 156 Cisco 300-115 Exam Here.actualtests.exam.Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: Here is the HSRP configuration seen on R1: "Pass Any Exam.com . when the Ethernet 0/0 interface goes down. the standby 1 track decrement command will lower the priority from 130 to 90." . QUESTION 156 http://www. However. when it comes back up. Any Time.www.

com 157 Cisco 300-115 Exam http://www." .Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.com .actualtests. "Pass Any Exam. Any Time.www. They have questions about how these two devices will perform in the event of a device failure.exam.

com .http://www.exam.

com . Any Time.www.exam.com 158 Cisco 300-115 Exam http://www.actualtests." ."Pass Any Exam.

D. B. The HSRP group number mismatch The HSRP group authentication is misconfigured The HSRP Hello packets are blocked The HSRP timers mismatch The HSRP group priorities are different http://www. E.com . C.exam.What issue is causing Router R1 and R2 to both be displayed as the HSRP active router for group 2? A.

com 159 Cisco 300-115 Exam http://www.com .Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: Based on the configuration output.exam. we see that authentication is configured on R2. but not on R1: "Pass Any Exam.www. Any Time.actualtests." .

This can be further verified by issuing the "show standby" command on each router.

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QUESTION 157
Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. They have questions about how these
two devices will perform in the event of a device failure.
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ac02 4000.0c07.ac02 http://www. E. D. 0000.0c07.com .0000.ac01 4000. B.exam.0000.0010 0000.What is the virtual mac-address of HSRP group 1? A.0000. C.ac01 4000.

0000.0010 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: Issuing the "show standby" command on either router shows us that the virtual MAC used by HSRP group 1 is 4000.exam.0c07.F.com .0000.0010 as shown below: http://www.

actualtests.com 162 Cisco 300-115 Exam http://www.www.exam. Any Time.com ."Pass Any Exam." .

exam.Topic 4. Mix QUESTIONS QUESTION 158 Refer to the exhibit. http://www.com .

D. C.When troubleshooting a network problem. B. LACP system priority LACP port priority interface MAC address system ID port number hot-standby link identification number interface bandwidth http://www.www.exam. F.com . D.) A. spanning-tree portfast bpduguard enable spanning-tree bpduguard default spanning-tree portfast bpdufilter default no spanning-tree link-type shared Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam.com 163 Cisco 300-115 Exam QUESTION 159 Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four. Which command can prevent BPDU transmission on this port? A. C.actualtests. Any Time. B." . a network analyzer is connected to Port f0/1 of a LAN switch. G. E.

" . traffic is not being replicated to the remote switch. This port continues to reestablish until after eight failed retries. Which option describes what causes the port to go into the errdisable state? "Pass Any Exam. B.Correct Answer: ABDE Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 160 RSPAN has been configured on a Cisco Catalyst switch. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 161 After UDLD is implemented. D. The RSPAN designated VLAN is missing the remote span command. UDLD timers are inconsistent.www. however. Any Time. UDLD is enabled globally. C. Correct Answer: B Section: (none) Explanation Explanation/Reference: http://www.exam. D. The port then transitions into the errdisable state.com 164 Cisco 300-115 Exam A. Normal UDLD operations that prevent traffic loops. UDLD port is configured in aggressive mode. The local RSPAN switch is replicating only Rx traffic to the remote switch. Which type of misconfiguration is a cause? A. C.actualtests. B. The local switch is overloaded with the amount of sourced traffic that must be replicated to the remote switch.com . a Network Administrator noticed that one port stops receiving UDLD packets. The local and remote RSPAN switches are configured using different session IDs.

BPDUblock BPDUfilter BPDUignore BPDUguard BPDUdisable Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. The engineer does not want this switch participating in Spanning Tree with the rest of the network.www. B.exam.Explanation: QUESTION 162 To follow the Layer 2 switching guidelines. D.actualtests. MST PVST+ RSTP RPVST+ STP Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 163 A network engineer is installing a switch for temporary workers to connect to." . Any Time. E. E. Which version of spanning tree is appropriate to meet the company policy? A. D.com . end user connectivity is still required. a network engineer decides to create a separate spanning tree for every group of 10 VLANs.com 165 Cisco 300-115 Exam http://www. B. however. C. Which spanning-tree feature accomplishes this? A. C.

Configure a SPAN session to monitor the received traffic on interface g0/4 for all VLANs except VLAN 3.com . D. B. C. Configure a SPAN session to monitor the received traffic on interface g0/4 only for VLAN 3. Configure a SPAN session to monitor the received traffic on interface g0/5 only for VLAN 3. which action must be performed for the configuration to take effect? A. C. D.QUESTION 164 Refer to the exhibit. B.exam. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 165 When SDM templates are configured. reload shutdown write memory backup config Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 166 Which statement about the MAC address sticky entries in the switch when the copy run start command is entered is true? http://www. What is the result of the SPAN configuration on a Cisco switch? A. Configure a SPAN session to monitor the received traffic on interface g0/5 for all VLANs except VLAN 3.

"Pass Any Exam. B. A sticky MAC address is lost when the switch reboots. BPDU filtering BackboneFast EtherChannel BPDU guard Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 168 Refer to the exhibit." . C.www. B. A sticky MAC address ages out of the MAC address table after 600 seconds. "Pass Any Exam. Any Time.actualtests.com .com 167 Cisco 300-115 Exam http://www." .actualtests.com 166 Cisco 300-115 Exam A.exam.www. A sticky MAC address is retained when the switch reboots. C. D. Any Time. A sticky MAC address can be a unicast or multicast address. D. Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 167 Enablement of which feature puts the port into err-disabled state when the port has PortFast enabled and it receives BPDUs? A.

D. C. F.exam.com .Which configuration ensures that the Cisco Discovery Protocol packet update frequency sent from DSW1 to ALS1 is half of the default value? A. E. DSW1(config)#cdp timer 90 DSW1(config-if)#cdp holdtime 60 DSW1(config)#cdp timer 30 DSW1(config)#cdp holdtime 90 DSW1(config-if)#cdp holdtime 30 DSW1(config-if)#cdp timer 60 Correct Answer: C Section: (none) Explanation Explanation/Reference: http://www. B.

Which state are these interfaces in after the VLAN is deleted? http://www. but they are reassigned to the default VLAN. They go down.com/ A. B. but they are reassigned to the native VLAN.www. They remain up. "Pass Any Exam. They remain up.exam. B. D. and then the VLAN is deleted.Explanation: QUESTION 169 Interfaces are assigned to a VLAN. They go down until they are reassigned to a VLAN. D.1Q trunking PortFast QoS private VLANs Correct Answer: B Section: (none) Explanation http://www.com 168 Cisco 300-115 Exam C. but they are reassigned to the default VLAN. 802. Any Time. C. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 170 Which feature is automatically configured when an administrator enables a voice VLAN? A." .exam.actualtests.com .

version 1 version 2 version 3 VTP does not recognize extended VLANs.actualtests.com 169 Cisco 300-115 Exam A. B. It can cause a network-wide VLAN configuration change if the revision number on the new switch is higher. It can cause a network-wide VLAN configuration change if the revision number on the new switch is lower. C." . Which version of VTP supports these extended VLANs? "Pass Any Exam.exam. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 173 An engineer is configuring an EtherChannel between two switches using LACP. If the EtherChannel mode on switch 1 is configured to active. It can cause network access ports to go into err-disabled state. Any Time.Explanation/Reference: Explanation: QUESTION 171 Which statement describes one major issue that VTP can cause in an enterprise network when a new switch is introduced in the network in VTP mode server? A. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 172 A network administrator configures 10 extended VLANs ranging from VLANs 3051 to 3060 in an enterprise network. which two modes on switch 2 establish an operational EtherChannel? (Choose two.www. It can cause routing loops. D. D.) http://www. B. C.com .

The IP address is placed on the port-channel logical interface. B. C.com 170 Cisco 300-115 Exam A. The IP address is assigned via DHCP only. destination MAC address and destination IP address C. Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 175 Which option is valid for EtherChannel load balancing? "Pass Any Exam.exam. Any Time.actualtests.www.A. D. E. active auto desirable on passive Correct Answer: AE Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 174 When a Layer 2 EtherChannel is configured. D. B. The IP address is placed on the lowest numbered member port. source MAC address and destination IP address http://www. C. source MAC address and source IP address B. The IP address is placed on the highest numbered member port.com ." . which statement about placement of the IP address is true? A.

exam.com .D. http://www. source MAC address and destination MAC address Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 176 Refer to the exhibit.

Based on the output. which option describes the reason for this error? A.www.exam." . D. The port channel interface numbers do not match. http://www. C.actualtests.com 171 Cisco 300-115 Exam Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 177 Refer to the exhibit.An engineer is configuring EtherChannel between two switches and notices the console message on switch 2. Switch 2 has too many member ports configured. Switch 1 does not have enough member ports configured.com . B. "Pass Any Exam. The EtherChannel protocols do not match. Any Time.

B. Configure DSW1 with the same version number. D.com . Configure DSW1 with the same region name. Correct Answer: D Section: (none) Explanation http://www. Which statement is true? A. and VLAN-to-instance mapping as shown on DSW2. DSW1 is in VTP client mode with a lower configuration revision number. and VLAN-to-instance mapping as shown on DSW2. DSW2 uses the VTP server mode to automatically propagate the MST configuration to DSW1. E. therefore. C.exam. revision number. DSW1 automatically inherits MST configuration from DSW2 because they have the same domain name.DSW1 should share the same MST region with switch DSW2. it automatically inherits MST configuration from DW2.

what is the total bidirectional traffic flow between two logical counter-rotating paths? A. The source port can be only an Ethernet physical port. 128 Gbps Correct Answer: B http://www. C.www.com .exam.Explanation/Reference: Explanation: "Pass Any Exam. 32 Gbps http://www. D. 64 Gbps D.actualtests. 16 Gbps B.exam. You can mix individual source ports and source VLANs within a single session. Correct Answer: BD Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 179 In a switch stack environment. The destination port can be destination in multiple SPAN sessions. The destination port does not participate in STP." . B. Any Time.com/ C.com 172 Cisco 300-115 Exam QUESTION 178 Which two statements about SPAN source and destination ports during an active session are true? (Choose two. E.) A. The source port can be monitored in multiple SPAN sessions.

com 173 Cisco 300-115 Exam Which statement about the SPAN and RSPAN configuration on SW1 is true? A.actualtests." . Any Time.www. SPAN session 2 monitors all traffic entering and exiting port FastEthernet 0/15.exam. D. B. RSPAN session 1 is incompletely configured for monitoring. RSPAN session 1 monitors activity on VLAN 50 of a remote switch. Correct Answer: C Section: (none) http://www. "Pass Any Exam. SPAN session 2 only monitors egress traffic exiting port FastEthernet 0/14. C.Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 180 Refer to the exhibit.com .

D.actualtests. B. B.com/ A.www. VLAN database DHCP snooping database spanning trees routing information Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: "Pass Any Exam. Any Time. C. D." .com 174 Cisco 300-115 Exam QUESTION 182 Which option is the minimum number of bindings that the DHCP snooping database can store? http://www.Explanation Explanation/Reference: Explanation: QUESTION 181 Which information does the subordinate switch in a switch stack keep for all the VLANs that are configured on it? A.com .exam.exam. C. 1000 bindings 2000 bindings 5000 bindings 8000 bindings http://www.

www." . B.com 175 http://www. C. D. D. C. disabled on off learning Correct Answer: A Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 185 "Pass Any Exam.Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 183 On which layer does IP source guard provide filtering to prevent a malicious host from impersonating the IP address of a legitimate host? A. Any Time. B.actualtests. what is the state of port security on a switch? A.com .exam. Layer 1 Layer 2 Layer 3 Layer 7 Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 184 By default.

Correct Answer: CD Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 186 Refer to the exhibit. and VRRP are true? (Choose two. D. E.Cisco 300-115 Exam Which two statements about HSRP. VRRP has one master router. B. GLBP allows for a maximum of four MAC addresses per group. C. VRRP is a Cisco proprietary protocol. HSRP is the preferred protocol to be used on multivendor environments. one standby router. GLBP. and many listening routers.exam. Which option is the most likely explanation of the duplicate address message logged? http://www.com . HSRP supports up to 255 groups on the same switch or router.) A.

A. Any Time.www." . B.10. spanning-tree loop HSRP misconfiguration a PC with IP of 10. C.1. "Pass Any Exam.1 a hardware problem Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 187 DRAG DROP Drag and drop the characteristic from the left to the matching Layer 2 protocol on the right.exam. D.actualtests.com 176 Cisco 300-115 Exam http://www.com .

Correct Answer: Section: (none) Explanation Explanation/Reference: http://www. B.A.com .exam. C. D.

exam." .com .Explanation: "Pass Any Exam.actualtests.www. Any Time.com 177 Cisco 300-115 Exam http://www.

exam. http://www.QUESTION 188 Refer to the exhibit.com .

exam. D." .com 178 Cisco 300-115 Exam A.www. such as CDP and VTP. The native VLAN is not present on the trunk. B. http://www. Spanning tree determines the priority of the current root for VLAN 50 and reduces the priority of the local switch to a lower value. C. E.A network engineer changes the default native VLAN to VLAN 999. Any Time. is no longer working. B. The standard configuration is used for each uplink. Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 189 Which two options are two results of using the command spanning-tree vlan 50 root primary within a spanning-tree network under global configuration? (Choose two. C. The control traffic must be manually enabled on the new native VLAN. The spanning-tree timers are reduced to improve the convergence time for VLAN 50.) A. What is wrong with the configuration? "Pass Any Exam. The priority value for VLAN 50 is set to 4094 on the root while the local switch priority is set to 32768. After applying the settings on the uplinks to the core switches. The encapsulation type is incorrect. The interface is administratively down. the switch control traffic. The switchport mode trunk command should be first in the output.actualtests.com .

Enable Rapid Spanning Tree to converge using the secondary link. B. Correct Answer: AD Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 190 An access switch at a remote location is connected to the spanning-tree root with redundant uplinks. What action will accomplish this task? http://www. Correct Answer: C Section: (none) Explanation Explanation/Reference: "Pass Any Exam. Which action accomplishes this task? A. Any Time. All ports that are configured on the current switch with VLAN 50 transition to designated ports. D. Apply a BPDU filter on the primary interface of the remote switches. C.www.exam." . Change the link-type to point-to-point.com 179 Cisco 300-115 Exam Explanation: QUESTION 191 A network engineer wants to make sure that an access switch will never become a Spanning Tree root for VLAN 5.com . The engineer decides to force the secondary link to be the desired forwarding root port.actualtests.D. E. Adjust the secondary link to have a lower priority than the primary link. The switchport that is configured for VLAN 50 is the primary connection to the spanning-tree root switch. A network engineer notices that there are issues with the physical cabling of the current root port.

Any Time.http://www.com 180 http://www. D. B.www.exam." .exam.com .com/ A. C.actualtests. adjust STP priority to the maximum value disable STP globally apply root guard to all outgoing neighbor interfaces enable MSTP and use a different revision number than all other switches Correct Answer: A Section: (none) Explanation Explanation/Reference: "Pass Any Exam.