Cisco 300-115

Implementing Cisco IP Switched Networks
Version: 9.2

Cisco 300-115 Exam
Topic 1, Layer 2 Technologies

QUESTION NO: 1
What is the maximum number of switches that can be stacked using Cisco StackWise?
A. 4
B. 5
C. 8
D. 9
E. 10
F. 13
Answer: D
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-seriesswitches/qa_c67-722110.html

QUESTION NO: 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. No configuration must be added.
B. stack ID
C. IP address
D. VLAN information
E. VTP information
Answer: A
Explanation:
Switch Stack Offline Configuration
You can use the offline configuration feature toprovision(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 theprovisioned configuration. The switch
that is added to the switch stack and that receives this configuration is called theprovisioned

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Cisco 300-115 Exam
switch.
You manually create the provisioned configuration through theswitchstack-member-number
provisiontypeglobal 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 theno shutdowninterface 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 theshow vlanuser 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 thecopy running-config startup-configprivileged 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 5-1lists the events that occur when the switch
stack compares the provisioned configuration with the provisioned switch.
Table 5-1Results of Comparing the Provisioned Configuration with the Provisioned Switch
Scenario
Result
The stack member numbers and the switch types match.
1.
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
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
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stack.

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If the stack member number of the provisioned switch matches the stack member number in the provisioned configuration on the stack. If the new stack member number of the provisioned switch matches the stack member number in the provisioned configuration on the stack. The provisioned configuration is changed to reflect the new information. The stack member numbers and the switch types match: 1.Cisco 300-115 Exam The stack member number is not found in the provisioned configuration. The provisioned configuration is changed to reflect the new information. The provisioned configuration is changed to reflect the new information. but 2. The switch stack applies the default configuration to the provisioned switch and adds it to the stack. 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. and 2. If the switch type of the provisioned switch matches the switch type in the provisioned configuration on the stack.www. The stack member number of the provisioned switch is in conflict with an existing stack member. The switch stack applies the provisioned configuration to the provisioned switch and adds it to the stack. but the switch types do not match: 1.com 4 ." .actualtests.cisco. Any Time.html "Pass Any Exam. The switch stack applies the default configuration to the provisioned switch and adds it to the stack. Reference:http://www. The switch type of the provisioned switch does not match the switch type in the provisioned configuration on the stack. The stack master assigns a new stack member number to the provisioned switch.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/relea se/12-2_55_se/configuration/guide/3750xscg/swstack. The stack member numbers match.

html QUESTION NO: 4 Refer to the exhibit.Cisco 300-115 Exam What percentage of bandwidth is reduced when a stack cable is broken? A. A break in any one of the cables will result in the stack bandwidth being reduced to half of its full capacity. Figure 3.www. 0 B.cisco.Cisco StackWise Technology Resilient Cabling Reference: http://www. 75 E. Subsecondtiming mechanisms detect traffic problems and immediately institute failover." . as shown in Figure 3. This mechanism restores dual path flow when the timing mechanisms detect renewed activity on the cable.com 5 . 50 D.com/c/en/us/products/collateral/switches/catalyst-3750-seriesswitches/prod_white_paper09186a00801b096a. 25 C. "Pass Any Exam. 100 Answer: C Explanation: Physical Sequential Linkage The switches are physically connected sequentially.actualtests. Any Time.

actualtests. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto D. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto B.Cisco 300-115 Exam Which set of configurations will result in all ports on both switches successfully bundling into an EtherChannel? A.www. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto Answer: D Explanation: "Pass Any Exam.com 6 . switch1 channel-group 1 mode desirable switch2 channel-group 1 mode passive C." . Any Time.

in which the interface responds to PAgP packets it receives but does not start PAgP packet negotiation. in which the interface starts negotiations with other interfaces by sending LACP packets. auto Places an interface into a passive negotiating state. on Forces the interface into an EtherChannel without PAgP or LACP. An interface in the on mode that is added to aport channel is forced to have the same characteristics as the already existing on mode interfaces in the channel.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. but does not start LACP packet negotiation. Any Time. 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. This setting minimizes the transmission ofPAgP packets. passive Places an interface into a passive negotiating state. Reference: http://www." . a usable EtherChannel exists onlywhen an interface group in theonmode is connected to another interface group in theonmode. Both the auto and desirable PAgP modes allow interfaces to negotiate with partner interfaces todetermine if they can form an EtherChannel based on criteria such as interface speed and. •An interface in the auto mode can form an EtherChannel with another interface in the desirable mode.cisco.com 7 .html "Pass Any Exam. With theonmode. for Layer 2 EtherChannels. This setting minimizes the transmission of LACP packets. trunking state and VLAN numbers.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/121_13_ea1/configuration/guide/3550scg/swethchl. For example: •Aninterface in the desirable mode can form an EtherChannel with another interface that is in the desirable or auto mode.actualtests. desirable Places an interface into an active negotiating state. in which the interface starts negotiations with other interfaces by sending PAgP packets.www. in which the interface responds to LACP packets that it receives. Interfaces can form an EtherChannel when they are in different PAgP modes as long as the modes are compatible.

If VLAN filtering is configured. If a VLAN is a source.com 8 . B. Any Time. you must enter a space before and after the comma. Usage Guidelines You can set a combined maximum of two local SPAN sessions and RSPAN source sessions. VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports. a VLAN cannot become a source. use the monitor session filter global configuration command. Change the monitor session source to VLAN 10 instead of the physical interface.www. Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10. If you specify a series of VLANs.cisco. all VLANs are monitored on trunk source ports. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack. You can monitor traffic on a single VLAN or on a series or range of ports or VLANs. By default.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_ma "Pass Any Exam. VLAN monitoring and VLAN filtering are mutually exclusive. D. 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. You select a series or range of VLANs by using the [ . C.Cisco 300-115 Exam QUESTION NO: 5 Refer to the exhibit. or to limit (filter) SPAN source traffic to specific VLANs. Apply the monitor session filter globally to allow only traffic from VLAN 10. 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. you must enter a space before and after the hyphen ( -). VLAN filtering cannot be enabled.actualtests." . If you specify a range of VLANs. Answer: C Explanation: To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session. Reference: http://www. | -] options. Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10.

C. Any Time. A network engineer wants to analyze all incoming and outgoing packets for an interface that is connected to an access switch. A monitor session on the access switch with a remote SPAN VLAN source and the physical interface as the destination F.D Explanation: 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.com 9 . A monitor session on the distribution switch with a physical interface as the source and a physical interface as the destination Answer: B. A remote SPAN VLAN on the distribution and access layer switch C. "Pass Any Exam. A monitor session on the distribution switch with a physical interface as the source and the remote SPAN VLAN as the destination B.actualtests. Which three items must be configured to mirror traffic to a packet sniffer that is connected to the distribution switch? (Choose three. A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination D.) A.Cisco 300-115 Exam nagement/command_reference/b_nm_3se_3850_cr/b_nm_3se_3850_cr_chapter_010.www." . A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination E.html#wp38 75419997 QUESTION NO: 6 Refer to the exhibit. SPAN copies (or mirrors) traffic received or sent (or both) on source ports or source VLANs to a destination port for analysis.

This setting minimizes the transmission of PagP packets. enabling remote monitoring of multiple switches across your network. C.com 10 . Answer: A Explanation: Here we have a situation where one switch is using active mode. and destination ports on different switches (or different switch stacks).cisco. Switch A is configured with channel-group 1 mode active. You can not mix the LACP and PAGP protocols to form an etherchannel. source VLANs. Here is a summary of the various etherchannel modes: EtherChannel PagP Modes Mode Description auto Places a port into a passive negotiating state.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/relea se/12-2_55_se/configuration/guide/3750xscg/swspan.www.html QUESTION NO: 7 After an EtherChannel is configured between two Cisco switches. Why is the EtherChannel bundle not working? A. which is an LACP mode." .actualtests. interface port channel 1 is in the down/down state. in which the port responds to PagP packets it receives but does not start PagP packet negotiation.Cisco 300-115 Exam RSPAN supports source ports. The switches are using mismatched EtherChannel negotiation modes. LACP priority must be configured on both switches. This mode is not supported when the EtherChannel members are from different switches in the switch stack (cross-stack EtherChannel). "Pass Any Exam. Any Time. and the other is using desirable. D. while Switch B is configured with channel-group 1 mode desirable. The destination is always a physical port Reference:http://www. The traffic for each RSPAN session is carried over a user-specified RSPAN VLAN that is dedicated for that RSPAN session in all participating switches. This mode is not supported when the EtherChannel members are from different switches in the switch stack (cross-stack EtherChannel). in which the port starts negotiations with other ports by sending PagP packets. Each RSPAN source switch must have either ports or VLANs as RSPAN sources. The switch ports are not configured in trunking mode. B. The channel group identifier must be different for Switch A and Switch B. which is a PAGP mode. Desirable Places a port into an active negotiating state. 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.

Passive Places a port into a passive negotiating state in which the port responds to LACP packets that it receives. E. or Layer 4 port numbers. The mode you select applies to all EtherChannels that you configure on the switch.com 11 . Use of source addresses or IP addresses can result in a better load balance. D. since all traffic is going to the same web server). Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle.actualtests.Cisco 300-115 Exam 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. Use the option that provides the greatest variety in your configuration. and either source mode. Reference:http://www.cisco. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle. destination mode. or both. For example. This setting minimizes the transmission of LACP packets.html "Pass Any Exam.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/122_55_se/configuration/guide/scg_2960/swethchl." . What should be done on the Cisco switch to allow for better EtherChannel utilization to the corporate web server? A. use of the destination MAC address results in the choice of the same link in the channel each time. B. if the traffic on a channel only goes to a single MAC address (which is the case in this example.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. Answer: E Explanation: EtherChannel load balancing can use MAC addresses.www.html QUESTION NO: 8 An EtherChannel bundle has been established between a Cisco switch and a corporate web server.cisco. Any Time. Adjust the EtherChannel load-balancing method based on source IP addresses. Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server. The network administrator noticed that only one of the EtherChannel links is being utilized to reach the web server. Adjust the EtherChannel load-balancing method based on destination IP addresses. Reference:http://www. IP addresses. but does not start LACP packet negotiation. C.

C. 39.cisco. 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 . All VLAN traffic is sent to the SPAN destination interface. B.html/index.com/c/en/us/td/docs/switches/lan/catalyst4500/122/25ew/configuration/guide/conf/span. Traffic from VLANs 1 to 8. Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices. 39.www.Cisco 300-115 Exam QUESTION NO: 9 Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. IP routing is disabled on neighboring devices." . D. E. and 52 is replicated to the SPAN destination port. B. Traffic from VLAN 4 is not sent to the SPAN destination interface.actualtests. What would cause the output to show only the single neighbor? A. The routers are connected via a Layer 2 switch. Cisco Express Forwarding is enabled locally. Answer: E Explanation: The “monitor session filter” command is used to specify which VLANS are to be port mirrored using SPAN. The trunk’s native VLAN must be changed to something other than VLAN 1. Any Time. The engineer notices only a single neighbor that uses Cisco Discovery Protocol. but it has several routing neighbor relationships. This command is configured globally: monitor session 2 filter vlan 1 – 8. 52 What is the result of the implemented command? A. 9 Reference:http://www.html#wp1066836 QUESTION NO: 10 A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. D. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs. "Pass Any Exam. C.com 12 .

com 13 . capabilities. QUESTION NO: 11 After the implementation of several different types of switches from different vendors. Local Area Mobility B. then each router will only have the single switch port that it connects to as its neighbor. Directed Response Protocol Answer: B 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. "Pass Any Exam. B. However." . CDP can be used to determine the physical topology. but not necessarily the logical topology. Remove the VTP domain name from all switches with "null" and then replace it with the new domain name. Even though multiple routing neighbors can be formed over a layer 2 network. LLDP performs functions similar to several proprietary protocols. VLANs are not passing from the VTP server (existing network) to the VTP clients. Which vendor-neutral protocol could be used to resolve this issue? A. only the physical port that it connects to will be seen as a CDP neighbor. password. Reference: http://en.wikipedia. Any Time.Cisco 300-115 Exam Answer: A Explanation: If all of the routers are connected to each other using a layer 2 switch. Configure a differe“t na”ive VLAN on all new switches that are configured as VTP clients. What must be done to fix this? A. NetFlow D. a network engineer notices that directly connected devices that use Cisco Discovery Protocol are not visible. and version.actualtests. principally wired Ethernet.www. and neighbors on an IEEE 802 local area network.org/wiki/Link_Layer_Discovery_Protocol QUESTION NO: 12 Several new switches have been added to the existing network as VTP clients. such as the Cisco Discovery Protocol (CDP). All of the new switches have been configured with the same VTP domain. Link Layer Discovery Protocol C.

All VLAN changes must be done on this switch in order to have them propagated to the VTP clients. Ensure that all switches run the same Cisco IOS version. CISCO and cisco are two different domain names. Verify these items if switches that run VTP fail to exchange VLAN information: •VTP information only passes through a trunk port. Provision one of the new switches to be the VTP server and duplicate information from the existing network.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613." .actualtests.com 14 . Reference: http://www. Enable VTP version 3. There are several reasons why the VLAN information can fail to be exchanged. •The VTP domain name must match and it is case sensitive. Any Time. •One of the switches must be the VTP server in a VTP domain. VTP authentication is required when using extended VLANs because of their ability to cause network instability. the extended VLANs are not being propagated to other VTP switches. C. Make sure that if EtherChannels are created between two switches. Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred.Cisco 300-115 Exam C.cisco. •Make sure that no password is set between the server and client. VTP does not support extended VLANs and should be manually added to all switches. What should be configured for extended VLANs? A. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use. B. which supports extended VLAN propagation. VTP allows a consistent view of the switched network across all switches.shtml QUESTION NO: 13 After implementing VTP. D. D.www. Make sure that all ports that interconnect switches are configured as trunks and are actually trunking. •Make sure that the VLANs are active in all the devices. only Layer 2 EtherChannels propagate VLAN information. If any password is set. make sure that the password is the same on both sides. Answer: D Explanation: VTP allows switches to advertise VLAN information between other members of the same VTP domain. Answer: B Explanation: • VTP version 1 and VTP version 2 do not propagate configuration information for extended-range "Pass Any Exam.

B.www. What is the most probable cause of this behavior? A. Any Time.shtml "Pass Any Exam.cisco." . Reference:http://www. Reference:http://www.com/en/US/docs/switches/lan/catalyst6500/ios/15.cisco. Switch B is configured in transparent mode. The trunk between Switch A and Switch B is misconfigured. C. D. while Switch C is configured with a trunk port to Switch B. and C are trunked together and have been properly configured for VTP. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2.Cisco 300-115 Exam VLANs (VLAN numbers 1006 to 4094).com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c 52. but Switch B does not receive any VLAN information. the VLANs in the range 1006 to 4094 are removed from VTP control.com 15 . Answer: A Explanation: VTP transparent switches do not participate in VTP. If you convert from VTP version 3 to VTP version 2.pdf QUESTION NO: 14 Refer to the exhibit. Switch C receives VLAN information from the VTP server Switch A. B. You must configure extended-range VLANs manually on each network device.1SY/config_guide/s up2T/vtp. • VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094). 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. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements.actualtests. Switch A.

and C are trunked together and have been properly configured for VTP.actualtests. Answer: C 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. "Pass Any Exam. D. but Switch C is not receiving traffic from certain VLANs. VTP pruning is configured globally on all switches and it removed VLANs from the trunk interface that is connected to Switch C. QUESTION NO: 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." . multicast.1D STP. The VTP revision number of Switch B is higher than that of Switch A.Cisco 300-115 Exam QUESTION NO: 15 Refer to the exhibit.com 16 . Any Time. a switch floods broadcast. is that VTP pruning has been configured. What would cause this issue? A. The trunk between Switch A and Switch B is misconfigured. The best explanation for why switch C is not seeing traffic from only some of the VLANs. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. VTP pruning is disabled by default.www. B. A VTP authentication mismatch occurred between Switch A and Switch B. The new switches are using RSTP instead of legacy IEEE 802. VTP pruning blocks unneeded flooded traffic to VLANs on trunk ports that are included in the pruning-eligible list. Switch A. Switch B has all VLANs.” What is the reason for this change? A. C. B. Without VTP pruning.

www. it has been determined that several ports are not transitioning as they should. Any Time. These ports are allowed to immediately enter the forwarding state rather than passively wait for the network to converge. After testing. This path is different than using the root port.cisco. RSTP has been enabled per interface and not globally.com 17 .1D STP and PortFast have been configured by default on all newly implemented Cisco Catalyst switches. IEEE 802. What is the reason for this? A. D.actualtests. The port roles have been adjusted based on the interface bandwidth and timers of the new Cisco Catalyst switches. B. The alternative port moves to the forwarding state if there is a failure on the designated port for the segment.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24062146. The administrator has defined the switch as the root in the STP domain. The switch does not have the processing power to ensure rapid transition for all ports. 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. D. * Backup port – A backup/redundant path to a segment where another bridge port already connects. * Disabled port – Not strictly part of STP. C. not on trunk links. C. A "Pass Any Exam." . STP is unable to achieve rapid transition for trunk links. the switch must be attached to a hub. Answer: C Explanation: RSTP can only achieve rapid transition to the forwarding state on edge ports and on point-to-point links. The backup port applies only when a single switch has two links to the same segment (collision domain). a network administrator can manually disable a port Reference:http://www.Cisco 300-115 Exam B. Answer: A Explanation: RSTP works by adding an alternative port and a backup port compared to STP. The link type is automatically derived from the duplex mode of a port. The STP root bridge selection is forcing key ports to remain in non-rapid transitioning mode. To have two links to the same collision domain.html QUESTION NO: 17 An administrator recently configured all ports for rapid transition using PortFast.

VTP pruning D.cisco. E. unknown. Any Time. B.cisco. such as broadcast. DTP in nonegotiate C. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes. D. This automatic link type setting can be overridden by explicit configuration.www. This makes them candidates for rapid transition to the forwarding state. and flooded unicast packets to only the switches that require it.Cisco 300-115 Exam port that operates in full-duplex is assumed to be point-to-point. This is how long a dynamic MAC address will remain in the CAM table. ARP requests will be processed less frequently by the switch.html QUESTION NO: 18 Which technique automatically limits VLAN traffic to only the switches that require it? A. Reference:http://www.html#wp1020444 QUESTION NO: 19 What effect does the mac address-table aging-time 180 command have on the MAC addresstable? A. VTP pruning is disabled. PBR Answer: C Explanation: VTP pruning enhances network bandwidth use by reducing unnecessary flooded traffic. C.com 18 . VTP pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to access the appropriate network devices. multicast. most links operate in full-duplex mode and are treated as point-to-point links by RSTP. In switched networks today. By default.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24062146. access lists B. The default timeout period will be 360 seconds.actualtests. "Pass Any Exam. Reference:http://www. while a half-duplex port is considered as a shared port by default. The MAC address-table will be flushed every 3 minutes.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/vtp." .

If a VLAN is not specified.actualtests.html#wp1126206 QUESTION NO: 20 While working in the core network building. Entering the value 0 disables the MAC aging. command aliases E.Cisco 300-115 Exam Answer: A 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. What solution allows the network switch to automatically recover from such an issue? A. As designed. macros B.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/ guide/cli/CLIConfigurationGuide/MACAddress. The range is from 0 to 1000000. Bidirectional Forwarding Detection Answer: B Explanation: There are a number of events which can disable a link on a Catalyst switch.www. Any Time. After the damaged cable was replaced." . Step 2 switch(config)#mac-address-table aging-timeseconds[vlanvlan_id] Specifies the time before an entry ages out and is discarded from the MAC address table. perform this task: Command Purpose Step 1 switch#configure terminal Enters configuration mode. the link did not recover. the default is 300 seconds. the aging specification applies to all VLANs. the link was placed into a non-forwarding state due to a fault with UDLD. such as the detection "Pass Any Exam.cisco. errdisable autorecovery C. a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber.com 19 . To configure the aging time for all MAC addresses. 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. IP Event Dampening D.

The VLAN template disables routing in hardware.com 20 . The VLAN receives additional frames from neighboring switches.cisco. After configuring SPAN to monitor this port. Reference:http://www." . However. assess. By default. by removing an unapproved device) without the need for administrative intervention. What is the root cause of this issue? A.actualtests. The idea behind requiring administrative action is so that a human engineer can intercede. some configurations may be prone to accidental violations. What is a cause for this issue? "Pass Any Exam.html QUESTION NO: 22 An access switch has been configured with an EtherChannel port. The switch needs to be rebooted before the SDM template takes effect. and a steady recurrence of these can amount to a huge time sink for the administrative staff.Cisco 300-115 Exam of a loopback.com/c/en/us/support/docs/switches/catalyst-3750-seriesswitches/44921-swdatabase-3750ss-44921. This gives the offending issue a chance to be cleared by the user (for example. B. D.www. the network administrator notices that not all traffic is being replicated to the management server. or a broadcast storm. UDLD failure. This is where errdisable autorecovery can be of great assistance. and (ideally) correct the issue. C. this can be done by issuing shutdown followed by no shutdown on the interface. Answer: C Explanation: SDM Template Notes: Choosing the VLAN template will actually disable routing (number of entry for unicast or multicast route is zero) in hardware. We can configure the switch to automatically re-enable any error-disabled interfaces after a specified timeout period. manual intervention by an administrator is necessary to restore the interface to working order. The SDM template is causing the CPU of the switch to spike during peak working hours. Any Time. The SDM VLAN template causes the MAC address-table to overflow.net/blog/2009/sep/14/errdisable-autorecovery/ QUESTION NO: 21 A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. Reference:http://packetlife.

Any Time. but not a destination. Answer: C Explanation: A source port or EtherChannel is a port or EtherChannel monitored for traffic analysis. What is the result of the configuration? A.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/span. You can configure both Layer 2 and Layer 3 ports and EtherChannels as SPAN sources. You can configure ports or EtherChannels in any VLAN as SPAN sources. RSPAN must be used to capture EtherChannel bidirectional traffic. but not a destination.com 21 . SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic." . The EtherChannels would not form because the load-balancing method must match on the "Pass Any Exam. VLAN filters are required to ensure traffic mirrors effectively. D.www. The port channel can be used as a SPAN source. Reference:http://www. A port-channel interface (an EtherChannel) can be a SPAN source.cisco. B. SPAN can monitor one or more source ports or EtherChannels in a single SPAN session. Trunk ports or EtherChannels can be configured as sources and mixed with nontrunk sources.actualtests. C.html#wp1040905 QUESTION NO: 23 Refer to the exhibit.Cisco 300-115 Exam A.

all channels (manually configured. but network loops would occur because the load-balancing methods do not match. PagP. although each switch involved in the etherchannel can have non matching parameters for load balancing.com 22 . This is true for the switch globally.com/c/en/us/td/docs/switches/lan/catalyst4500/122/54sg/configuration/guide/config/channel. Answer: B Explanation: An etherchannel will form ifone end is active and the other is passive.www." .cisco. or LACP) use the same load-balancing.actualtests. The EtherChannels would form and function properly even though the load-balancing and EtherChannel modes do not match. C. The EtherChannels would form and both devices would use the dst-ip load-balancing method because Switch1 is configured with EtherChannel mode active. D.Cisco 300-115 Exam devices. As a result. B. 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 Active No Passive/On Passive No Load balancing can only be configured globally. Reference:http://www. Any Time.html#wp1020804 QUESTION NO: 24 "Pass Any Exam. The EtherChannels would form.

D. B. increasing operational efficiency. any configuration that you apply to the port-channel interface affects the EtherChannel. For example.cisco. The storm control settings will appear on the EtherChannel. you should configure Storm Control at the EtherChannel Interface level. forward traffic based on Cisco Express Forwarding C. but will only be present on the physical interfaces. Reference:http://www.4 Tbps." . C. If you configure Storm Control on only some of the ports. Storm Control is an exception to this rule. the data plane and switch fabric with capacity of 720 Gbps of supervisor engine in each "Pass Any Exam.html QUESTION NO: 25 What is the function of NSF? A. forward traffic simultaneously using both supervisors B. The settings will be applied to the EtherChannel bundle and all associated physical interfaces. boosting nonstop communications. In a VSS. Storm Control must be configured on all or none of the ports. Answer: D Explanation: After you configure an EtherChannel. any configuration that you apply to the physical interfaces affects only the interface where you apply the configuration. provide nonstop forwarding in the event of failure of one of the member supervisors Answer: D Explanation: VSS is network system virtualization technology that pools multiple Cisco Catalyst 6500 Series Switches into one virtual switch.com/c/en/us/td/docs/switches/lan/catalyst4500/122/31sg/configuration/guide/conf/channel. The storm control configuration will be accepted. provide automatic failover to back up supervisor in VSS mode D. but not on the associated physical ports. What is the result of the configuration? A. VSS formed by two Cisco Catalyst 6500 Series Switches with the Virtual Switching Supervisor 720-10GE. you cannot configure Storm Control on some of the members of an EtherChannel.com 23 . Therefore. and not at the physical interface level. Any Time.Cisco 300-115 Exam A network engineer tries to configure storm control on an EtherChannel bundle. The configuration will be rejected because storm control is not supported for EtherChannel. those ports will be dropped from the EtherChannel interface (put in suspended state).www.actualtests. and scaling system bandwidth capacity to 1. Switches would operate as a single logical virtual switch called a virtual switching system 1440 (VSS1440).

The port is fully operational and no known issues are detected.html QUESTION NO: 27 After reviewing UDLD status on switch ports.over-blog. Normal UDLD operations that prevent traffic loops. 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. UDLD timers are inconsistent.Cisco 300-115 Exam chassis are active at the same time on both chassis. UDLD tries to reestablish the connection with the neighbor. This port continues to reestablish until after eight failed retries." . UDLD port is configured in aggressive mode. C. an engineer notices that the. a Network Administrator noticed that one port stops receiving UDLD packets. Reference:http://www. B.www. UDLD is enabled globally. The bidirectional status of“unknown”indicates that the port will go into the disabled state because it stopped receiving UDLD packets from its neighbor. B. C. Only one of the virtual switch members has the active control plane.” Which statement describes what this indicates about the status of the port? A. when a port on a bidirectional link that has a UDLD neighbor relationship established stops receiving UDLD packets. The port then transitions into the errdisable state. Any Time.cisco. Answer: B Explanation: With UDLD aggressive mode enabled.com/article-cisco-catalyst-6500-series-vss-1440124536783. D.actualtests. Reference:http://ciscorouterswitch.com 24 . combining for an active 1400-Gbps switching capacity per VSS. the port is disabled. D.html QUESTION NO: 26 After UDLD is implemented. After eight failed retries. UDLD moved into aggressive mode after inconsistent acknowledgements were detected.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/udld. Which option describes what causes the port to go into the errdisable state? A. The UDLD port is placed in the“unknown”state for 5 seconds until the next UDLD packet is "Pass Any Exam.

It would be prohibitively difficult to coordinate the configuration of UDLD on both ends of a link at the same time. An uplink group is a set of Layer 2 interfaces (per VLAN). or individually on specific interfaces with the command udld port.www. UplinkFast provides fast convergence after a direct link failure and achieves load balancing between redundant Layer 2 links using uplink groups. which is not necessarily an error condition.net/blog/2011/mar/7/udld/ QUESTION NO: 28 Pilot testing of the new switching infrastructure finds that when the root port is lost. only one of which is forwarding at any given time. PVST+ B. Reference:http://packetlife. Any Time. UplinkFast E. Answer: A Explanation: By default. you can accelerate the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. Which spanning-tree technology is used to accomplish backup root port selection? A. an uplink group consists of the root port (which is forwarding) and a set of blocked ports." . it begins using the alternate paths as soon as the spanning tree selects a new root port.com 25 . This enables UDLD in normal mode. Specifically. The root port transitions to the forwardingstate immediately without going through the listening and learning states. STP immediately replaces the root port with an alternative root port. When UDLD is finally enabled on the other end. The uplink group provides an alternate path in case the currently forwarding link "Pass Any Exam. Loop Guard F.Cisco 300-115 Exam received on the interface.actualtests. We can enable UDLD globally on the device. as it would with the normal spanning-tree procedures. UDLD is disabled on all interfaces. so when UDLD is first enabled and does not detect a neighbor the link state is considered unknown. the status will transition to bidirectional. UDLD Answer: D Explanation: If a switch loses connectivity. By enabling UplinkFast with the spanning-tree uplinkfast global configuration command. BackboneFast D. PortFast C. except for selflooping ports. The port will remain operational during this time.

The spanning-tree port priority value represents the location of a port in the network topology and how well it is located to pass traffic.html QUESTION NO: 30 A network engineer must set the load balance method on an existing port channel. The path cost value represents the media speed. and path cost. port-priority B.cisco. Reference:http://www.actualtests. If a network segment in the spanning tree fails and a redundant path exists. BPDUs contain information about the sending switch and its ports. When two ports on a switch are part of a loop. Any Time.cisco.com 26 . at regular intervals. called bridge protocol data units (BPDUs). port priority. Reference:http://www. Switches send and receive spanning-tree frames.) A. 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. forward-timers D. Which action must be done to apply a new load balancing method? "Pass Any Exam.html QUESTION NO: 29 A network engineer must adjust the STP interface attributes to influence root port selection. cost C. including switch and MAC addresses. Which two elements are used to accomplish this? (Choose two. link type E.www. root guard Answer: A. The switches do not forward these frames but use them to construct a loop-free path. the spanning-tree algorithm recalculates the spanning-tree topology and activates the standby path. switch priority.B Explanation: Spanning tree forces redundant data paths into a standby (blocked) state. 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.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/122_55_se/configuration/guide/scg_2960/swstpopt.Cisco 300-115 Exam fails." .com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/relea se/12-2_55_se/configuration/guide/3750xscg/swstp.

C. Any Time. There is a duplex mismatch on the interface. D. EtherChannel load balancing can use MAC addresses or IP addresses. Ensure that IP CEF is enabled globally to support all load balancing methods. B. Reference:http://www." . source or destination addresses. The interface is configured as the source of the SPAN session. C. You configure the load balancing and forwarding method with use of theport-channel load-balance {dst-ip | dst-mac | src-dst-ip | srcdst-mac | src-ip | src-mac}global configuration command. Answer: C Explanation: "Pass Any Exam. Configure the new load balancing method using port-channel load-balance. What is causing the line protocol on this interface to be shown as down? A.html QUESTION NO: 31 Refer to the exhibit. D. The interface is configured as the target of the SPAN session. Adjust the switch SDM back to“default”. Answer: A 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. E. The mode applies to all EtherChannels that are configured on the switch.Cisco 300-115 Exam A. There is a speed mismatch on the interface.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.www. There is a layer 1 physical issue.cisco.actualtests. B. or both source and destination addresses.com 27 . A network engineer investigates a recent network failure and notices that one of the interfaces on the switch is still down. Upgrade the PFC to support the latest load balancing methods.

Cisco 300-115 Exam With the SAPN destination port.cisco. This is the default version on all switches." .com/CiscoSB/GetArticle.xml&pid=2&convert ed=0 QUESTION NO: 33 Which technique allows specific VLANs to be strictly permitted by the administrator? A. the state of the destination port is up/down by design. Reference:http://sbkb. Cisco IOS Embedded Event Manager C. VTP pruning B. 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. It allows you to track instances even if the native VLAN ID or port duplex states do not match between connecting devices.cisco.www. Any Time. VLAN access-list E. L2P tunneling "Pass Any Exam.com 28 . which is used to track down errors and minimize costly downtime. Reference:http://www. it is found that rapid error tracking is not currently enabled. • CDP Version 2 — This is the most recent version of CDP which has enhanced features such as rapid reporting mechanism.com/en/US/products/hw/switches/ps708/products_tech_note09186a0 08015c612. Which option must be enabled to allow for enhanced reporting mechanisms using Cisco Discovery Protocol? A. logging buffered D. trunk allowed VLANs D. transparent bridging C.shtml QUESTION NO: 32 While doing network discovery using Cisco Discovery Protocol.actualtests. Cisco Discovery Protocol logging options Answer: A Explanation: • CDP Version 1 — This is the first version of CDP which was used for the discovery of Cisco devices in the network. This version is mainly used for backward compatibility. Cisco Discovery Protocol source interface E. Cisco Discovery Protocol version 2 B.aspx?docid=0ed03cbac49b446ab390a65791 7d817c_Cisco_Discovery_Protocol_CDP__Properties_Settings_on_Sx500_S. This is the normal operational state for SPAN destinations.

PPP "Pass Any Exam.html QUESTION NO: 34 For security reasons.com/articles/article. and is enabled by default. are allowed on each trunk. use the “switchport trunk allowed vlan remove vlan-list” interface configuration command to remove specific VLANs from the allowed list. Reference:http://www. you can remove VLANs from the allowed list. the IT manager has prohibited users from dynamically establishing trunks with their associated upstream switch. Reference:http://www. You can use this command only when the interface switchport mode is access or trunk. but may be disabled. C.com 29 . Apply BPDU guard and BPDU filter. Which two actions can prevent interface trunking? (Choose two. 1 to 4094. B.cisco. configure “switchport nonegotiate. Any Time.) A. All VLAN IDs. D. Answer: A. However.) A. Configure trunk and access interfaces manually.B Explanation: The Dynamic Trunking Protocol (DTP) is used to negotiate forming a trunk between two Cisco devices. preventing traffic from those VLANs from passing over the trunk.www. Disable DTP on a per interface basis.Cisco 300-115 Exam Answer: C Explanation: By default.ciscopress." . Enable switchport block on access ports.” This prevents the interface from generating DTP frames.com/en/US/docs/switches/lan/catalyst3550/software/release/12.actualtests. otherwise the link will be a non-trunking link.asp?p=2181837&seqNum=8 QUESTION NO: 35 Which two protocols can be automatically negotiated between switches for trunking? (Choose two. To restrict the traffic a trunk carries. You must manually configure the neighboring interface as a trunk interface to establish a trunk link. To disable DTP. DTP causes increased traffic. a trunk port sends traffic to and receives traffic from all VLANs.1_13_ ea1/configuration/guide/swvlan.

a network engineer notices that none of the VTP clients are receiving the updates. HDLC E. DTP C. B. D.com/servlet/JiveServlet/previewBody/14792-102-157313/Dynamic%20Trunking%20Protocol.PDF QUESTION NO: 36 A network is running VTPv2. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command.Cisco 300-115 Exam B. The first thing that should be done is to verify that the trunk ports are connected and up. ISL D. B. After verifying all VTP settings.actualtests. QUESTION NO: 37 After configuring new data VLANs 1020 through 1030 on the VTP server. it takes up to 4 hours propagate. DLCI F. Any Time." . What is the problem? A. DOT1Q Answer: C.com 30 . "Pass Any Exam. The VTP server must be reloaded. VTP must be stopped and restarted on the server. Reload the VTP server. The VTP version number must be set to version 3.F Explanation: Switches such as the Catalyst 3550 that are capable of either 802.cisco. the network engineer notices that the new switch is not receiving the list of VLANs from the server. Restart the VTP process on the new switch. C. Reference:https://learningnetwork. Verify connected trunk ports. C.1Q or ISL trunking encapsulation. D. After each update to the VTP server. Reload the new switch.www. Which action resolves this problem? A. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work.

2_52_ se/configuration/guide/swvtp. Create a Layer 3 transit VLAN to segment the traffic between the sites.com 31 . Modify the spanning-tree priorities to dictate the traffic flow.shtml "Pass Any Exam.cisco. Therefore. When you enter the secret keyword. VTP-pruned VLANs do not reduce the number of spanning tree port instances.www. Answer: B 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. Reference:http://www.html#wp1316856 QUESTION NO: 38 A network engineer is extending a LAN segment between two geographically separated data centers. VTP versions 1 and 2 propagate only VLANs 1 to 1005. VTP pruning is the best choice.com/en/US/docs/switches/lan/catalyst3560/software/release/12. you cannot convert from VTP version 3 to version 1 or 2. Since the question asked for the choice that is an enhancement to the STP design. Another switch in the domain has a higher revision number than the server. When hidden. and it avoids the use of the spanning tree. you can directly configure the password secret key. B. • VTP pruning—Avoid this method if the goal is to reduce the number of STP instances. Use VTP pruning on the trunk interfaces. Reference:http://www. Instead. VTPpruned VLANs on a trunk are still part of the spanning tree.com/en/US/tech/tk389/tk689/technologies_tech_note09186a00808906 13.Cisco 300-115 Exam E. You must reenter the password if you enter a takeover command in the domain. If extended VLANs are configured. Configure manual trunk pruning between the two locations. Any Time. Instead. Answer: C 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.actualtests. but it does not appear in plain text in the configuration. D.cisco. the key associated with the password is saved in hexadecimal format in the running configuration." . •Support for extended range VLAN (VLANs 1006 to 4094) database propagation. the method runs the pruned VLAN on trunks. the secret key from the password string is saved in the VLAN database file. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? A. C.

" . VTP pruning removed all unused VLANs.com/document/11836/how-define-vlans-allowed-trunk-link QUESTION NO: 40 When you design a switched network using VTPv2. 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. Any Time. C.html "Pass Any Exam. 20. Only VTP version 3 supports extended VLANs (1-4095). 4096 Answer: B Explanation: VTP versions 1 and 2 Supports normal VLAN numbers (1-1001).www.actualtests. What is the root cause of the problem? A. Reference:http://cciememo. Allowing additional VLANs across the trunk introduced a loop in the network.com 32 . Answer: A Explanation: The “switchport trunk allowed vlan” command will only allow the specified VLANs. and overwrite any others that were previously defined. 2048 E. and 30) are allowed to traverse the switch trunk interface. 1000 B.30 is issued.cisco. B. ISL was unable to encapsulate more than the already permitted VLANs across the trunk.20. how many VLANs can be used to carry user traffic? A. 1024 D. 1001 C. You would also need to explicitly allow the other working VLANs to this configuration command.com/2012/11/difference-between-vtp-versions. D. The command effectively removed all other working VLANs and replaced them with the new VLANs. After the command switchport trunk allowed vlan 10. Reference:https://supportforums. all other existing VLANs no longer pass traffic over the trunk. 4095 F.Cisco 300-115 Exam QUESTION NO: 39 The network manager has requested that several new VLANs (VLAN 10.blogspot.

actualtests. It allows control traffic to pass using the non-default VLAN. NDP D. including control traffic. Reference: http://en. Answer: D Explanation: The “vlan dot1q tag native” will tag all untagged frames. with the defined native VLAN. so the open standard protocol must be configured.wikipedia. principally wired Ethernet. C. and neighbors on an IEEE 802 local area network. LLTD Answer: B 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. such as the Cisco Discovery Protocol (CDP). QUESTION NO: 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.Cisco 300-115 Exam QUESTION NO: 41 What does the command vlan dot1q tag native accomplish when configured under global configuration? A.org/wiki/Link_Layer_Discovery_Protocol "Pass Any Exam. Any Time. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s)." . except when the native VLAN is set to 1. D. B.com 33 . IRDP B. All frames within the native VLAN are tagged. capabilities. Which protocol does the network engineer configure on both devices to accomplish this? A. LLDP C. Control traffic is tagged.www. LLDP performs functions similar to several proprietary protocols. Cisco Discovery Protocol is not supported.

So if the port is to be a part of the loop. Rapid Spanning-Tree B. Which spanning-tree feature satisfies this requirement? A. VLANs 1 through 1005 are allowed on each trunk by default. Any Time.Cisco 300-115 Exam QUESTION NO: 43 A manager tells the network engineer to permit only certain VLANs across a specific trunk interface. Spanning-Tree FastPort D.cisco. For Integrated Cisco IOS Software based switches. VACL D. the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state. However. VLAN traffic can be removed from the allowed list. Spanning-Tree Fast Forward Answer: D Explanation: In order to allow immediate transition of the port into forwarding state. Which option can be configured to accomplish this? A. L2P tunneling Answer: A Explanation: When a trunk link is established. VTP pruning C. This keeps traffic from the VLANs from passing over the trunk link. This removes specific VLANs from the allowed list. all of the configured VLANs are allowed to send and receive traffic across the link. The port still participates in STP. they require the switchport to enter a forwarding state immediately. the port eventually transitions into "Pass Any Exam." .To restrict the traffic that a trInk carries.www. Spanning-Tree Timers C. Spanning-Tree PortFast E. perform these steps: 1. allowed VLAN list B. Note: The allowed VLAN list on both the ends of the trunk link should be the same.actualtests. issue the switchport trunk vlan-Iist interface configuration command. PortFast immediately transitions the port into STP forwarding mode upon linkup.com/document/11836/how-define-vlans-allowed-trunk-link QUESTION NO: 44 For client server failover purposes.com 34 . For their disaster recovery feature to operate successfully. enable the STP PortFast feature. Reference: https://supportforums.

com/library/content. switch# show spanning-tree brief D.aspx?b=CCNP_Studies_Switching&seqNum=36 QUESTION NO: 45 Which command does a network engineer use to verify the spanning-tree status for VLAN 10? A.9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 sec "Pass Any Exam. switch# show spanning-tree vlan 10 brief Answer: A Explanation: Command Description show spanning-tree Displays information about the spanning-tree state. switch# show spanning-tree summary E. Any Time.57d8.f2d2. switch# show spanning-tree bridge C.com 35 .24 Switch-C(config-if-range)# sp–nning-tree portfast Reference:http://www.4180 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." . Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 .actualtests.www. Example output: SW2#show spanning-tree vlan 10 VLAN0010 Spanning tree enabled protocol rstp Root ID Priority 24586 Address 0014.Cisco 300-115 Exam STP blocking mode. switch# show spanning-tree vlan 10 B.informit.

--.---.dionicio.actualtests.cisco. which statement describes what happens when“a do”ain name is configured on one of the switches? A.--------------------------Po21 Root FWD 9 128. and the configuration revision number. The network is expected to grow and add many new VLANs in the future. The switch with the non-default domain name restores back to "null" upon reboot.Nbr Type ------------------.html QUESTION NO: 46 A new network that consists of several switches has been connected together via trunking interfaces. a switch will have a domain name of NULL and no password. Contained in a summary advertisement: •VTP version •Domain name •Configuration revision number •Time stamp •MD5 encryption hash code Reference:https://rowell.com/en/US/docs/ios/lanswitch/command/reference/lsw_s2.www.232 P2p Reference: http://www. Summary advertisements – sent out every 300 seconds and every time a change occurs on the VLAN database. Switches with higher revisio“num”ers does not accept the new domain name." . Any Time. Which Spanning Tree Protocol should be used to reduce "Pass Any Exam. B. Answer: C Explanation: By default. C. VTP summary advertisements are sent out of all ports with the new domain name.net/configuring-cisco-vtp/ QUESTION NO: 47 A network engineer is setting up a new switched network.--------. VLANs. If all switches currently have the default VTP domain name "null". If the switch hears a VTP advertisement it will automatically learn the VTP domain name.216 P2p Po23 Altn BLK 9 128.-------.Cisco 300-115 Exam Interface Role Sts Cost Prio.com 36 . D. All other switches with the default domain name become VTP clients.

Rather than maintaining 1000 spanning trees. featuring an access Switch A. MST." .com/2011/05/chapter-03-implementing-spanningtree_19. Figure 3-15: VLAN Load Balancing Figure 3-15 illustrates two links and 1000 VLANs.www.Cisco 300-115 Exam switch resources and managerial burdens that are associated with multiple spanning-tree instances? A. uses a minimum number of STP instances to match the number of physical topologies present. 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. Reference: http://ciscodocuments.1w RST algorithm to multiple spanning trees. PVST+ E. each switch needs to maintain only two spanning trees. Figure 3-15 shows a common network design.html QUESTION NO: 48 "Pass Any Exam. The 1000 VLANs map to two MST instances. connected to two Building Distribution submodule Switches D1 and D2.com 37 . there are 1000 VLANs. MST D. PVRST+ runs STP instances for each VLAN and does not take into consideration the physical topology that might not require many different STP topologies. reducing the need for switch resources.actualtests. RSTP B. 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. RPVST+ Answer: C Explanation: Multiple Spanning Tree (MST) extends the IEEE 802.blogspot. In this setup. Any Time. on the other hand. PVST C.

com 38 . C. Reference:http://www. B. depending on how the switch is used in the network. Any Time.Cisco 300-115 Exam Which statement about the use of SDM templates in a Cisco switch is true? A.2_55_se/configuration/guide/swsdm. use the default template to balance resources. SDM templates are configured by accessing the switch using the web interface. D. for example.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/1 2. routing Answer: A Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages. default 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. depending on how the switch is used in the network. and use access template to obtain maximum ACL usage. SDM templates are used to configure ACLs that protect networks and specific hosts from unnecessary or unwanted traffic. Answer: A Explanation: You can use SDM templates to configure system resources in the switch to optimize support for specific features." . access C. • Default—The default template gives balance to all functions.pdf QUESTION NO: 49 Which SDM template disables routing and supports the maximum number of unicast MAC addresses? A. 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. You can select a template to provide maximum system usage for some functions. VLAN B. "Pass Any Exam.actualtests. the switch SDM templates prioritize system resources to optimize support for certain features. 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. To allocate hardware resources for different usages. the switch SDM templates prioritize system resources to optimize support for certain features.www. SDM templates are used to configure system resources in the switch to optimize support for specific features. E.cisco.

Cisco 300-115 Exam • Routing—The routing template maximizes system resources for Ipv4 unicast routing. • VLANs—The VLAN template disables routing and supports the maximum number of unicast MAC addresses. default C.com 39 . • Routing—The routing template maximizes system resources for Ipv4 unicast routing. Reference:http://www.2_55_ se/configuration/guide/swsdm. the switch SDM templates prioritize system resources to optimize support for certain features. It would typically be selected for a Layer 2 switch. • Default—The default template gives balance to all functions. typically required for a router or aggregator in the center of a network.com/en/US/docs/switches/lan/catalyst3560/software/release/12.actualtests. VLAN B.com/en/US/docs/switches/lan/catalyst3560/software/release/12." .www. It would typically be selected for a Layer 2 switch. Reference:http://www.cisco.pdf QUESTION NO: 51 In a Cisco switch. access D. • VLANs—The VLAN template disables routing and supports the maximum number of unicast MAC addresses (clients). what is the default period of time after which a MAC address ages out and is discarded? "Pass Any Exam. typically required for a router or aggregator in the center of a network. routing Answer: A Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages. Any Time.cisco.pdf QUESTION NO: 50 Which SDM template is the most appropriate for a Layer 2 switch that provides connectivity to a large number of clients? A.2_55_ se/configuration/guide/swsdm. 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.

perform this task: Command Purpose Step 1 switch#configure terminal Enters configuration mode. To disable MAC-move notification.www. 300 seconds D. when is a syslog message generated? A. A new MAC address is removed from the content-addressable memory. B. A new MAC address is added to the content-addressable memory.html QUESTION NO: 52 If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port. More than 64 MAC addresses are added to the content-addressable memory. the aging specification applies to all VLANs. Answer: A Explanation: mac-address-table notification mac-move To enable MAC-move notification. The range is from 0 to 1000000.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/gui de/cli/MACAddress. D." . 100 seconds B. use thenoform of this command. A MAC address or host moves between different switch ports. use themac-address-table notification mac-movecommand in global configuration mode. Entering the value 0 disables the MAC aging. Reference:http://www. C. If a VLAN is not specified.actualtests.the default is 300 seconds.com 40 .Cisco 300-115 Exam A. 180 seconds C. Mac-address-table notification mac-move[counter[syslog]] no mac-address-table notification mac-move[counter[syslog]] "Pass Any Exam. Step 2 switch(config)#mac-address-table aging-timeseconds[vlanvlan_id] Specifies the time before an entry ages out and is discarded from the MAC address table. 600 seconds Answer: C Explanation: To configure the aging time for all MAC addresses.cisco. Any Time.

cable unplugged C. The reason can be: Reference:http://www.www.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd8 7b." .shtml QUESTION NO: 54 What is the default value for the errdisable recovery interval in a Cisco switch? A.cisco.cisco. Reference:http://www. 100 seconds C. 600 seconds Answer: C Explanation: "Pass Any Exam. Any Time.Cisco 300-115 Exam Syntax Description counter (Optional) Specifies the MAC-move counter feature.com 41 .com/en/US/docs/ios/lanswitch/command/reference/lsw_m1. Usage Guidelines MAC-move notification generates a syslog message whenever a MAC address or host moves between different switch ports. routing loop B. 30 seconds B. Syslog (Optional) Specifies the syslogging facility when the MAC-move notification detects the first instance of the MAC move.actualtests. STP loop guard D.html QUESTION NO: 53 Which option is a possible cause for an errdisabled interface? A. security violation Answer: D Explanation: There are various reasons for the interface to go into errdisable. 1sernads D.

" . Reference:http://www. In this case. Theshow errdisable recoverycommand shows the default error-disable recovery state for all the possible conditions. "Pass Any 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 secondsand.com 42 .actualtests. cat6knative#show errdisable recovery ErrDisable Reason Timer Status ----------------.shtml QUESTION NO: 55 Which statement about LLDP-MED is true? A. you must reenable the ports manually. Any Time.Cisco 300-115 Exam After you fix the root problem. LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices. the ports are still disabled if you have not configured errdisable recovery on the switch. the timeout feature is disabled. Issue theshutdown command and then theno shutdowninterface mode command on the associated interface in order to manually reenable the ports.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd8 7b. by default.www. Theerrdisable recoverycommand allows you to choose the type of errors that automatically reenable the ports after a specified amount of time.

com/en/US/docs/switches/metro/me3400/software/release/12. memory errors. C. Each device sends periodic advertisements to a central device that builds the network topology. port-duplex. B. Each device sends periodic advertisements to all IP addresses in its ARP table." .net/subdom/network/index.actualtests. Power over Ethernet. hardware platform "Pass Any Exam. LLDP-MED is an extension to LLDP that operates between routers that run BGP. Reference:http://network. network policy. Each device broadcasts periodic advertisements to all of its neighbors. Answer: A 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. native VLAN IDs.com 43 . Answer: A Explanation: Cisco devices send periodic CDP announcements to the multicast destination address 01-00-0ccc-cc-cc.php?id=cdp QUESTION NO: 57 Which option lists the information that is contained in a Cisco Discovery Protocol advertisement? A. Any Time.cisco. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery. memory errors C. 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 network devices.pdf QUESTION NO: 56 Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true? A. out each connected network interface. and inventory management.2_58_s e/configuration/guide/swlldp. port-duplex. native VLAN IDs. D. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC. Reference:http://www. native VLAN IDs. LLDP-MED is an extension to LLDP that operates only between endpoint devices.spravcesite.Cisco 300-115 Exam B. D.www. C. hardware platform B.

Reference:http://www.com 44 . per interface. VTP Management Domain TLV Advertises the system’s configured VTP management domain name-string. Table 21Type-Length-Value Definitions for CDPv2 TLV Definition Device-ID TLV Identifies the device name in the form of a character string. Table 21 summarizes the TLV definitions for CDP advertisements. a switch. hardware platform.www. Port-ID TLV Identifies the port on which the CDP packet is sent. Cisco 4500.cisco." .html QUESTION NO: 58 "Pass Any Exam. This feature is implemented only for interfaces that support the IEEE 802. CDP learns the native VLAN for an interface. port-duplex. Eth 1/0. This information is in the form of the interface protocol and port number. Any Time. memory errors Answer: A Explanation: Type-Length-Value fields (TLVs) are blocks of information embedded in CDP advertisements. Capabilities TLV Describes the functional capability for the device in the form of a device type. Native VLAN TLV Indicates. for example. for example.actualtests. Address TLV Contains a list of network addresses of both receiving and sending devices. Version TLV Contains information about the software release version on which the device is running. Full/Half Duplex TLV Indicates status (duplex configuration) of CDP broadcast interface.1Q protocol. for example. IP Network Prefix TLV Contains a list of network prefixes to which the sending device can forward IP packets. Used by network operators to diagnose connectivity problems between adjacent network elements. Platform TLV Describes the hardware platform name of the device.Cisco 300-115 Exam D.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf015. the assumed VLAN for untagged packets on the interface. Used by network operators to verify VTP domain configuration in adjacent network nodes.

Any Time.com/en/US/technologies/tk652/tk701/technologies_white_paper0900a ecd804cd46d.www. LLDP can discover only Windows servers. B.Cisco 300-115 Exam Which option describes a limitation of LLDP? A. LLDP cannot provide information about VTP.com 45 .cisco." . D.html "Pass Any Exam. LLDP does not support TLVs. C.actualtests. 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. LLDP can discover up to two devices per port. Answer: A 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 External port support-Used to identify the card terminating the fiber in the case of wavelengthdivision multiplexing (WDM) No External Port-ID TLV VTP management support No VTP Management Domain TLV Port unidirectional mode-Used in fiber.

www. UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity. Reference:http://www. C. UDLD detects the existence of unidirectional links." . UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.cisco. B.2SX/configuration/g "Pass Any Exam.com/en/US/docs/switches/lan/catalyst6500/ios/12. When a unidirectional link is detected. capabilities.com/en/US/docs/switches/lan/catalyst6500/ios/12. UDLD detects the existence of unidirectional links.html QUESTION NO: 60 Which option lists the modes that are available for configuring UDLD on a Cisco switch? A.2SX/configuration/g uide/udld. Reference:http://www. D. UDLD is a standardized Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures. and neighbors on a local area network. When a unidirectional link is detected.actualtests. normal and aggressive B.com 46 . Answer: A Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD.cisco. capabilities. normal and active D. normal and standby Answer: A Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD. UDLD puts the affected port into the errdisabled state and alerts the user. UDLD puts the affected port into the errdisabled state and alerts the user. active and aggressive C.Cisco 300-115 Exam QUESTION NO: 59 Which statement about the UDLD protocol is true? A. Any Time. normal and passive E. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity.UDLD can operate in either normal or aggressive mode. and neighbors on a local area network.

Advertisements contain time-to-live information. 60 seconds C. CDP is enabled by default and can be disabled globally with the command no cdp enable. Any Time.html QUESTION NO: 61 What is the default interval at which Cisco devices send Cisco Discovery Protocol advertisements? A. D. Devices discover each other by listening at that address. 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.com/en/US/docs/ios-xml/ios/cdp/configuration/15-mt/nm-cdpdiscover.cisco. They also listen to messages to learn when interfaces on other devices are up or go down. B. Cisco Discovery Protocol is enabled by default. by default. which indicates the length of time a receiving device should hold Cisco Discovery Protocol information before discarding it. Answer: A "Pass Any Exam. CDP is enabled by default and can be disabled globally with the command no cdp run. media-independent.www.com 47 .html QUESTION NO: 62 Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true? A. CDP is disabled by default and can be enabled globally with the command cdp enable.actualtests. 120 seconds D. C. and network-independent protocol that networking applications use to learn about nearby. directly connected devices. 300 seconds Answer: B Explanation: Cisco Discovery Protocol is a Layer 2.Advertisements supported and configured in Cisco software are sent. CDP is disabled by default and can be enabled globally with the command cdp run. every 60 seconds.Cisco 300-115 Exam uide/udld. 30 seconds B." . Reference:http://www.

If converting from VTP version 3 to VTP version 2.com/en/US/docs/switches/lan/catalyst6500/ios/12. Extended VLANs are only supported in version 3 and not in versions 1 or 2.actualtests.com/en/US/docs/ios/12_2/configfun/command/reference/frf015. when a switch is configured to use VTP versions 1 or 2? A. which means the Cisco IOS software will receive CDP information.2SX/configuration/guide/vtp.1q frame? A. transparent B.www. 12-bit C. To disable CDP on aninterface." . Reference: http://www. 32-bit Answer: B Explanation: "Pass Any Exam. To disable it globally. Answer: D Explanation: VTP version 1 and version 2 support VLANs 1 to 1000 only. Any Time. use the “no cdp enable interface” configuration command. 16-bit D.ht ml QUESTION NO: 64 What is the size of the VLAN field inside an 802. CDP also is enabled on supported interfaces by default. client C. server D. VLANs in the range 1006 to 4094 are removed from VTP control.com 48 .Cisco 300-115 Exam Explanation: CDP is enabled on your router by default. 8-bit B.cisco.cisco.html#w p1017573 QUESTION NO: 63 Which VTP mode is needed to configure an extended VLAN. Reference:http://www. use the “no cdp run” command. Extended-range VLANs are supported only in VTP version 3.

" .www. the port should be configured as a trunk port.com 49 . Which option shows the expected result if a show vlan command is issued? "Pass Any Exam.1Q QUESTION NO: 65 What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. All other values may be used as VLAN identifiers.actualtests. 2 D. 1 C.094 VLANs Reference: http://en.Cisco 300-115 Exam The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs.org/wiki/IEEE_802. allowing up to 4. The hexadecimal values of 0x000 and 0xFFF are reserved. If more than one VLAN is needed. Any Time. 0 B.wikipedia. QUESTION NO: 66 Refer to the exhibit. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.

Cisco 300-115 Exam A) B) C) D) "Pass Any Exam.com 50 .actualtests. Any Time." .www.

so even though Cisco IOS will accept both. •The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. a port can not be both. Any Time. but not automatically disabled when a voice VLAN is removed? A. Exhibit A B. the port has been configured both as a trunk and as a switchport in data vlan 10.www.actualtests. When you disable "Pass Any Exam. portfast B.Cisco 300-115 Exam A. QUESTION NO: 67 Which feature is automatically enabled when a voice VLAN is configured. Exhibit B C. port-security C. Exhibit D Answer: A Explanation: In this case. the port will actually be used as a trunk. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines •You should configure voice VLAN on switch access ports. •The Port Fast feature is automatically enabled when voice VLAN is configured. Obviously. ignoring the switchport access VLAN 10 command." .com 51 . Exhibit C D. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). spanning tree D.

1q header found? A.wikipedia.com 52 . Any Time. within the Ethernet FCS D.www.html QUESTION NO: 68 In which portion of the frame is the 802. within the Ethernet payload C.cisco. Reference:http://www.Cisco 300-115 Exam voice VLAN.1Q does not encapsulate the original frame. Instead. VLANs 1-4094 C. VLANs 1-1001 B. it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en. the Port Fast feature is not automatically disabled.1_22_ ea11x/configuration/guide/swvoip. VLANs 2-1001 D.com/en/US/docs/switches/lan/catalyst2950/software/release/12. within the Ethernet header B." .actualtests. within the Ethernet source MAC address Answer: A Explanation: Frame format Insertion of 802.1Q tag in an Ethernet frame 802.1Q QUESTION NO: 69 Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a switch? A.org/wiki/IEEE_802. for Ethernet frames. VLANs 2-4094 Answer: C Explanation: "Pass Any Exam.

storm control D. Reference: http://www. but VLAN 1 can’t be pruned because it’s an administrative VLAN.com/VTP-Pruning.com 53 . All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN.orbit-computer-solutions. "Pass Any Exam. Any Time. even in situations in which few users are connected in that VLAN.cisco.actualtests.www.com/c/en/us/support/docs/lan-switching/vtp/1055821.php QUESTION NO: 70 Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A. Both VTP versions 1 and 2 supports pruning. port-security C. bpdguard Answer: A Explanation: VTP ensures that all switches in the VTP domain are aware of all VLANs. VLANs 2 – 1001 are pruning eligible. VTP pruning B. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic. there are occasions when VTP can create unnecessary traffic. all the clients in the VTP domain will automatically enable VTP pruning.Cisco 300-115 Exam VTP pruning should only be enabled on VTP servers." .html#vtp_pruning QUESTION NO: 71 Refer to the exhibit. Reference: http://www. By default. However. All switches in the network receive all broadcasts.

actualtests." . Which action resolves this problem? A.1q. Answer: C Explanation: Only VTP servers can add new VLANs to the switched network. D.1Q trunking to pass this new VLAN along to the other switches. Enable VTP pruning and disable 802.1q. QUESTION NO: 72 Refer to the exhibit.Cisco 300-115 Exam The users in an engineering department that connect to the same access switch cannot access the network. Disable VTP pruning and disable 802. B. The network engineer found that the engineering VLAN is missing from the database. "Pass Any Exam. C. Change VTP mode to server and enable 802. you will need to enable 802. Update the VTP revision number. Then.www. Any Time. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server.1q.com 54 .

Manually force trunking with switchport mode trunk on both switches." . Enable the company B switch with the vtp mode server command. Any Time.actualtests.www. Answer: C Explanation: Since the number of existing VLANs differ on the switches (9 on A and 42 on B) we know that there is a problem with VTP or the trunking interfaces. C. Disable DTP and document the VTP domain mismatch. D.Cisco 300-115 Exam The network switches for two companies have been connected and manually configured for the required VLANs. Which action resolves this problem? A. Delete vlan. The VTP domain names do match and they "Pass Any Exam. but users in company A are not able to access network resources in company B when DTP is enabled.com 55 .dat and ensure that the switch with lowest MAC address is the VTP server. B.

only 802.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. 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. but version 2 does not. Any Time. 802. If you have a native VLAN mismatch. "Pass Any Exam. Cisco Discovery Protocol version 3 carries native VLAN information. Cisco Discovery Protocol version 1 carries native VLAN information. you will see CDP error messages on the console output. PPP encapsulation with a virtual template B. Consider that this is a multivendor environment. but versions 1 and 2 do not. QUESTION NO: 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. Link Aggregation Protocol at the access layer C.www. D.Cisco 300-115 Exam are both VTP servers so there are no issues there. but version 1 does not.1Q and ISL. QUESTION NO: 74 Which statement about using native VLANs to carry untagged frames is true? A.com 56 . B. Of these. dot1q VLAN trunking D. Cisco Discovery Protocol version 2 carries native VLAN information. Which Cisco IOS switching feature can be used to achieve the task? A." . Inter-Switch Link Answer: C 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.actualtests. C. Answer: A Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information. There are 2 different methods for trunking.

aspx?b=CCNP_Studies_Switching&seqNum=25 QUESTION NO: 76 A network engineer must improve bandwidth and resource utilization on the switches by stopping "Pass Any Exam. however. you must ensure that you choose a common native VLAN for each port in the trunk. spanning-tree bpdu-filter is enabled." . If spanning tree detects a native VLAN mismatch. A multilayer switch has been configured to send and receive encapsulated and tagged frames. If you use 802.com/articles/article. Any Time.com 57 . C.Cisco 300-115 Exam Reference: http://www. the trunk still remains up for other VLANs.1q trunks are on both sides.ciscopress. not via DTP messages. but 1 (the default native VLAN) on the other switch.1Q trunks. Native VLAN mismatches are detected via spanning tree and Cisco Discovery Protocol (CDP). Answer: C Explanation: Here we see that the native VLAN has been configured as 2013 on one switch. VLAN 2013 on the multilayer switch is configured as the native VLAN. 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. D. Which option is the cause of the spanning-tree error? A. VLAN ID 1 should not be used for management traffic because its unsafe. both with native VLAN mismatch. VLAN spanning-tree in SW-2 is configured. B. spanning tree blocks local native VLAN traffic and the remote switch native VLAN traffic on the trunk.www.com/library/content.asp?p=29803&seqNum=3 QUESTION NO: 75 Refer to the exhibit. 802. Reference: http://www.informit.actualtests.

Upgrade to VTP version 3 for advanced feature set support.actualtests.cisco. Answer: C Explanation: Manaully pruning the default VLAN (1) can only be done with the “switchport trunk allowed vlans remove” command. Reference: http://www. VLAN access-map Answer: A Explanation: Cisco advocates the benefits of pruning VLANs in order to reduce unnecessary frame flooding. Any Time. B. VTP pruning B. Support less than 1500 MTU "Pass Any Exam. Use trunk pruning vlan 1. The “trunk pruning vlan 1” option is not a valid command. switchport trunk allowed VLAN D. QUESTION NO: 78 What is required for a LAN switch to support 802. The “vtp pruning” command prunes VLANs automatically.html QUESTION NO: 77 Which action allows a network engineer to limit a default VLAN from being propagated across all trunks? A. Enable VTP pruning on the VTP server. C.1q Q-in-Q encapsulation? A.Cisco 300-115 Exam the inefficient flooding of frames on trunk ports where the frames are not needed. access list C. Manually prune default VLAN with switchport trunk allowed vlans remove." .com/c/en/us/support/docs/switches/catalyst-6500-seriesswitches/24330-185. D. which stops the inefficient flooding of frames where they are not needed.www. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning. Which Cisco IOS feature can be used to achieve this task? A.com 58 .

Any Time. the other two bytes for tag control information (TCI). "Pass Any Exam. except the native VLAN. 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.1_13_ea1/config uration/guide/swtunnel. 8-bytes except the native VLAN C. How many bytes are added to each frame as a result of the configuration? A. 8-bytes including native VLAN Answer: A Explanation: In 802.www. A VLAN tag adds 4 bytes to the frame. 4-bytes except the native VLAN B. Support 1504 MTU or higher C. Support 1547 MTU only Answer: B Explanation: The default system MTU for traffic on Catalyst switches is 1500 bytes.1Q tunneling (Q-in-Q) feature increases the frame size by 4 bytes when the extra tag is added. Support 1522 layer 3 IP and IPX packet D. all VLAN packets are tagged on the trunk link.com 59 . 4-bytes including native VLAN D.actualtests.Cisco 300-115 Exam B. http://www. Two bytes are used for the tag protocol identifier (TPID).cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12. Because the 802.1Q trunking." .html QUESTION NO: 79 Refer to the exhibit.

desirabledesirable.html#wp1081491 QUESTION NO: 81 Which statement about the use of PagP link aggregation on a Cisco switch that is running Cisco IOS Software is true? A. Any Time. auto. and on.com 60 . and on-on allow the formation of a channel. active. and on-on will allow a channel to be formed. Only the combinations auto-auto. Reference:http://www. G0/2. If a device on one side of the channel does not support PagP. PagP modes are active. desirable. desirabledesirable. and on-on allow the formation of a channel. Only the combinations of auto-desirable. Only the combinations auto-desirable. The default is 32768. desirable. such as a router. desirabledesirable. Only the combinations active-desirable. PagP modes are off. 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. Which action allows interface G0/1 to always actively forward traffic in the port-channel? A. and on-on allow the formation of a channel. LACP uses the port priority with the port number to form the port identifier. D.actualtests. The PagP modes are explained below. G0/3. desirable. Only the combinations active-active. Only the combinations auto-desirable. and on. B. the lower the priority. and on. C. and on. and on-on allow the formation of a channel. Configure LACP port-priority on G0/1 to 1. Configure G0/1 as half duplex and G0/2 as full duplex. The valid range is from 1 to 65535. Answer: B Explanation: A LACP port priority is configured on each port using LACP. auto. D. PagP modes are off. Configure LACP port-priority on G0/1 to 65535. B. The port priority can be configured automatically or through the CLI. The higher the number. and on. and G0/4 between two switches using Ethernet port-channel.com/c/en/us/td/docs/ios/12_2sb/feature/guide/gigeth. PagP modes are active. desirable.Cisco 300-115 Exam QUESTION NO: 80 A network engineer configured a fault-tolerance link on Gigabit Ethernet links G0/1.cisco. desirabledesirable." . Answer: A Explanation: PagP modes are off. C. desirable. LACP traffic goes through G0/4 because it is the highest interface ID. desirable-desirable. desirabledesirable. and on-on will allow a channel to be formed.www. the device "Pass Any Exam.

com 61 .html QUESTION NO: 82 Refer to the exhibit. Which EtherChannel negotiation protocol is configured on the interface f0/13 – f0/15? A. Port Aggregation Protocol C. Port Combination Protocol "Pass Any Exam." .Cisco 300-115 Exam on the other side must have PagP set to on.www. Link Combination Control Protocol B. Any Time. Reference:http://www.cisco.actualtests.com/c/en/us/support/docs/switches/catalyst-2900-xl-seriesswitches/21041-131.

which is operating in desirable mode. which is only a PAgP mode. desirabledesirable. and fa0/15 are all in Port Channel 12.actualtests. 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 IPv6: Source IP address Server_Switch# "Pass Any Exam. and on-on will allow a channel to be formed. To increase bandwidth. Only the combinations auto-desirable. the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch. The Link Aggregate Control Protocol (LACP) trunking supports four modes of operation: In this example.www.Cisco 300-115 Exam D." . . Any Time. auto. Users of PC-1 experience slow connection when a webpage is requested from the server.com 62 .fa0/14. and on. desirable. QUESTION NO: 83 Refer to the exhibit. Link Aggregation Control Protocol Answer: B Explanation: PAgP modes are off. we see that fa 0/13.

B. PAgP drops the ports that do not match theconfiguration. The device on the other side must have "Pass Any Exam. The load balancing method should be changed to destination MAC. If speed and duplex change when a bundle exists. •PAgP modes are off. the source MAC address will always be that of PC-1. all ports in the bundle are modified to match that VLAN. D. desirabledesirable.com 63 . B. Which statement describes what happens to all ports in the bundle? A.actualtests. Change the load-balance method to dst-mac. traffic is still slow.Cisco 300-115 Exam HoweIer. Any Time. Some restrictions are deliberately introduced into PAgP. Answer: A Explanation: PAgP aids in the automatic creation of EtherChannel links. Only the combinations auto-desirable. C. PAgP changes the port speed and duplex forall ports in the bundle. When a bundle already exists and a VLAN of a port is modified. and on. •PAgP does not group ports that operate atdifferent speeds or port duplex. Upgrade the switch IOS to IP services image. Disable EtherChannel load balancing. PAgP changes the port speed but not the duplex for all ports in the bundle. QUESTION NO: 84 A network engineer changed the port speed and duplex setting of an existing EtherChannel bundle that uses the PAgP protocol. and on-on allow the formation of a channel." . Answer: C Explanation: Since this traffic is coming from PC-1. traffic will only be using one of the port channel links. since the web server has two NICs traffic will be load balanced across both MAC addresses.www. desirable. C. PAgP packets are sent between EtherChannel-capable ports in order to negotiate the formation of a channel. Which action can the engineer take to resolve this issue? A. D. PAgP does not change the port speed and duplex for all ports in the bundle until the switch is rebooted. The restrictions are: •PAgP does notform a bundle on ports thatare configured for dynamic VLANs. auto. PAgP changes the port speed and duplex forall ports in the bundle. and since the load balancing method is source MAC. PAgP requires that all ports in the channelbelong to the same VLAN or are configured as trunk ports. Contact Cisco TAC to report a bug on the switch.

Cisco 300-115 Exam PAgP set to on if a device on one side ofthe channel does not support PAgP.actualtests. B. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel.html QUESTION NO: 86 Refer to the exhibit. D.html QUESTION NO: 85 Which statement about using EtherChannel on Cisco IOS switches is true? A.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. Answer: A Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link. and all must be configured as either Layer 2 or Layer 3 interfaces.com 64 . Reference: http://www. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel.cisco. C. 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. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.cisco. Reference:http://www. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 16 Gbps only for Gigabit EtherChannel. All interfaces in each EtherChannel must be the same speed. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. "Pass Any Exam. Any Time.www." . The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 10 Gbps only for Gigabit EtherChannel. such as a router.

D.www. Answer: A Explanation: These three ports show that they are in Port Channel 1. and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol.1d BPDU? "Pass Any Exam. Physical port Fa0/13. B. which is a standards based protocol. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol. C. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol. and the (SU) means they are in use and operating at layer 2. Fa0/14.Cisco 300-115 Exam Which statement about switch S1 is true? A.actualtests. Any Time. Fa0/14. as opposed to PagP. Fa0/14. Logical port Fa0/13." . which is Cisco proprietary. Logical port Fa0/13. QUESTION NO: 87 What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802. The protocol used for this port channel shows as LACP. Physical port Fa0/13. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol. Fa0/14.com 65 .

but when a RSTP switch receives a 802. it responds with an 802. it restarts the timer and starts using RSTP BPDUs on that port.Cisco 300-115 Exam A.1d BPDU and eventually the two switches run 802.1d to communicate.1d to communicate.1D switch and starts using only 802.com 66 . it responds with a 802.1d BPDU and eventually the two switches run 802. RSTP selectively sends 802.actualtests. C. and RSTP BPDUs are sent. 1 B.www.1d does not understand RSTP BPDUs because they are different versions. it assumes that it is connected to an 802. but when a RSTP switch receives a 802.html QUESTION NO: 88 When two MST instances (MST 1 and MST 2) are created on a switch. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent).1D BPDU after the port migration-delay timer has expired. D.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired. but when a RSTP switch receives an 802. 3 D. Any Time. if the RSTP switch is using 802. B.1d BPDU and eventually the two switches run 802. 2 C. it does not respond with a 802. in which all the spanning tree instances are independent. When a port is initialized.1d BPDU. 802. Reference:http://www. 802. MST establishes and maintains IST. However.1d BPDU.1d to communicate.1d understands RSTP BPDUs because they are the same version. it does not respond with a 802. CIST.cisco.1D BPDUs. and CST spanning trees: • "Pass Any Exam.1D configuration BPDUs and TCN BPDUs on a per-port basis.1d BPDU. 4 Answer: C Explanation: Unlike other spanning tree protocols.1d BPDU.1d BPDU. but when a RSTP switch receives a 802.1d understands RSTP BPDUs because they are the same version.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/spantree. If the switch receives an 802.1d does not understand RSTP BPDUs because they are different versions. 802. 802.1D switches. what is the total number of spanning-tree instances running on the switch? A. Answer: A Explanation: For backward compatibility with 802. While this timer is active. the switch processes all BPDUs received on that port and ignores the protocol type." .

and the special 0 instance. By default. but each MST instance has its own topology parameters. • A CIST is a collection of the ISTs in each MST region. MST instance 1 in region A is independent of MST instance 1 in region B. "Pass Any Exam. All other MST instances are numbered from 1 to 4094. for example. for a total of 3 instances. The IST is the only spanning tree instance that sends and receives BPDUs. Instance 0 is a special instance for a region.Cisco 300-115 Exam An IST is the spanning tree that runs in an MST region. such as root bridge ID.www. Any Time. which are1sername11eed within MST BPDUs. the number of BPDUs that need to be processed to support multiple spanning tree instances is1sernamcantly reduced. known as the IST. Because the MST BPDU carries information for all instances.html QUESTION NO: 89 Refer to the exhibit. All of the other spanning tree instance information is contained in MSTP records (M-records). and so forth.cisco. all VLANs are assigned to the IST. Reference:http://www. An MST instance is local to the region.com 67 . All MST instances within the same region share the same protocol timers. In the case for this question. MST maintains multiple spanning tree instances. there will be the 2 defined MST instances. • The CST interconnects the MST regions and single spanning trees. Within each MST region." .com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/spantree. even if regions A and B are interconnected. root path cost.actualtests.

D. C.cisco.com 68 . Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. 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. configurable in increments of 16. If all LAN ports have the same priority value. The possible priority range is 0 through 240 (default 128).www.1_9_e a1/configuration/guide/swstp.Cisco 300-115 Exam f1/0 and f1/1 have the same end-to-end path cost to the designated bridge. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports. Reference:http://www.actualtests. Any Time." . B. A lower path cost represents higher-speed transmission and is preferred. Answer: C Explanation: If a loop occurs.html#wp1105354 "Pass Any Exam. Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. STP considers port priority when selecting a LAN port to put into the forwarding state. 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? A. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16.com/en/US/docs/switches/lan/catalyst2950/software/release/12.

the default is 32768.19 and all ports are forwarding. "Pass Any Exam. The switch priority value is zero. the range is 0 to 61440 in increments of 4096. The bridge priority is 1 and all ports are forwarding. D.www." . Any Time. Answer: D Explanation: For priority. it has the lowest priority value for VLAN 1. Why would the switch be considered as a root bridge? A.com 69 . The switch priority for VLAN 1 and the macro specifies“This Bridge is the root”.Cisco 300-115 Exam QUESTION NO: 90 Refer to the exhibit. the more likely the switch will be chosen as the root switch. B. C.actualtests. The lower the number. The bridge priority is 128.

which option will be the new root port for VLAN 10? A. interface f0/14 C.com 70 . "Pass Any Exam.cisco." .1_9_e a1/configuration/guide/swstp. interface f0/15 D.actualtests.com/en/US/docs/switches/lan/catalyst2950/software/release/12. All ports are members of VLAN 10.www. 1sername1e f0/21 Answer: D Explanation: Root Port election on each bridge Each (non-Root) bridge has exactly one Root Port. Considering the default cost of upstream bridges to the root bridge is equal. interface f0/13 B.Cisco 300-115 Exam Reference:http://www. which represents the best path to the Root Bridge. Any Time.html#wp1020666 QUESTION NO: 91 Refer to the exhibit.

With the initial version of spanning tree. "Pass Any Exam.Listening–The switch processes BPDUs and awaits possible new information that would cause it to return to the blocking state.Forwarding–A port receiving and sending data. this process could take from 30-60 seconds. fa0/21 has t–e lowest cost. BPDU data is still received in blocking state. The engineer observes that when the PC is connected to the network. 2.actualtests. These steps are outlined as follows. Answer: C Explanation: When first powered on. bypassing the listening and learning states. Configure port duplex and speed to auto negotiation. each port goes through 4 states to ensure that there are no physical loops in the layer 2 broadcast domain. Which Layer 2 enhancement can be used to eliminate this delay? A. 1.com/extreme/topics/802_1d_spanning_tree_electio n_rules QUESTION NO: 92 A network engineer is trying to deploy a PC on a network. STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately. D.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.us/Home/ethernet-and-ip/spanning-tree-protocol QUESTION NO: 93 A network engineer configured an Ethernet switch using these commands." . STP still monitors incoming BPDUs that would indicate it should return to the blocking state to prevent a loop. B. normal operation. C.extremenetworks. Configure no switchport. Any Time. Reference:http://net.com 71 .www. Reference:https://community. Configure spanning-tree portfast. Configure port to duplex full and speed 1000.cmed. so it will be th–root port.Blocking–A port that would cause a switching loop. it takes 30 to 60 seconds for the PC to see any activity on the network interface card. 3. 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.Cisco 300-115 Exam In this case.

B. No traffic is forIarded across this port. However. then the default action of STP of listening." . the “Spanning-tree portfast bpdufilter default” command specifies that if a BPDU is received on that port. If an interface is enabled for portfast receives BDPU. and forwarding states should be used. In this way. and forwarding states.www. and forwarding states. Reference:http://www.actualtests. The port goes into errdisabled state and stops forwarding traffic. Answer: D Explanation: The root guard ensures that the port on which root guard is enabled is the designated port. If an interface is enabled for portfast receives BDPU. root bridge ports are all designated ports. B. If an interface is enabled for portfast receives BDPU.cisco. C. learning. unless two or more ports of the root bridge are connected together. the root guard enforces the position of the root bridge. the port goes through the spanning-tree listening. The port goes into loop-inconsistent state and stops forwarding traffic. bypassing the listening and learning states. C. QUESTION NO: 94 Which statement describes what happens when a port configured with root guard receives a superior BPDU? A. D. D. If an interface is enabled for portfast receives BDPU. If the bridge receives superior STP Bridge Protocol Data Units (BPDUs) on a root guard-enabled port.Cisco 300-115 Exam Switchone(config) # Spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true? A. learning.com 72 . the port goes into the spanning-tree inconsistent state. The port goes into BPDU-inconsistent state and stops forwarding traffic. This rootinconsistent state is effectively equal to a listening state. the port does not go through the spanning-tree listening. root guard moves this port to a root-inconsistent STP state. Any Time. the port is shut down immediately. learning.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800ae9 "Pass Any Exam. Normally. The port goes into root-inconsistent state and stops forwarding traffic. Answer: A Explanation: STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately.

Answer: C Explanation: When configuring mLACP for Server Access. Reference:http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12. B. •mLACP does not support half-duplex links. •mLACP does not support multiple neighbors.www.shtml QUESTION NO: 95 Which statement about restrictions for multichassis LACP is true? A. It is not available in VSS.2SX/configuration/g uide/mlacp_server_support. 8 D. follow these guidelines and restrictions: •PFC3A mode does not support the mLACP for server access feature. Converting a port channel to mLACP can cause a service disruption." . •The DHD system priority must be lower (higher numerically) than the PoA system priority. •Converting a port channel to mLACP can cause a service disruption. •VSS mode does not support the mLACP for server access feature. Any Time. C.html QUESTION NO: 96 What is the maximum number of 10 Gigabit Ethernet connections that can be utilized in an EtherChannel for the virtual switch link? A. 6 C. 4 B.actualtests.Cisco 300-115 Exam 6b. D. 12 Answer: C Explanation: The VSS is made up of the following: "Pass Any Exam. It is available only on a Cisco Catalyst 6500 Series chassis. •No more than 100 VLANs can be active on a switch configured as a PoA.com 73 . It does not support 1Gb links.

What happens if all VSL connections between the virtual switch members are lost? A. If for some rare reason all VSL connections are lost between the virtual switch members leaving both the virtual switch members up." . and only the new active virtual switch continues to forward traffic.com 74 . Answer: D Explanation: Q. The new active virtual switch continues to forward traffic on all links.2(33)SXI) In the dual active recovery mode. Any Time.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aec d806ed74b.Cisco 300-115 Exam • 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.html "Pass Any Exam. B. Both virtual switch members cease to forward traffic. Reference:http://www. 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. C.www. The VSS transitions to the dual active recovery mode. and both virtual switch members continue to forward traffic independently. The VSS transitions to the dual active recovery mode. Reference:http://www.actualtests. D. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member.cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aec d806ed74b. the VSS will transition to the dual active recovery mode. 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.cisco. The virtual switch members reload.html QUESTION NO: 97 Which statement describes what happens if all VSL connections between the virtual switch members are lost? A.

13. 21. B. "Pass Any Exam. C.cisco. Reference:http://www. Configuration Requirements for SwitchA The VTP and STP configuration modes on SwitchA should not be modified. The new active virtual switch continues to forward traffic on all links. but will need to be modified to support the addition of SwitchB. All interfaces are shut down in the formerly active virtual switch member.Cisco 300-115 Exam QUESTION NO: 98 Which statement describes what happens when a switch enters dual active recovery mode? A. They have just added a new switch (SwitchB) to the existing network as shown in the topology diagram. Any Time. You have been tasked with competing the needed configuring of SwitchA and SwitchB. • SwitchA needs to be the root switch for vlans 11. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. 22 and 23. SwitchB has a minimal configuration. Answer: B Explanation: In the dual active recovery mode.www. but the new active virtual switch forwards traffic on all links. SwitchA and SwitchB use Cisco as the enable password. All other vlans should be left are their default values. 12.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aec d806ed74b. RouterA is currently configured correctly and is providing the routing function for devices on SwitchA and SwitchB.html QUESTION NO: 99 CORRECT TEXT Scenario: You work for SWITCH." . D. SwitchA is currently configured correctly. The VSS detects which system was last in active state and shuts down the other switch.com 75 .com. The switch shuts down and waits for the VSL link to be restored before sending traffic.actualtests. The switch continues to forward traffic out all links and enables spanning tree on VSL link and all other links to prevent loops.

Cisco 300-115 Exam
Configuration Requirements for SwitchB
• Vlan 21
- Name: Marketing
- will support two servers attached to fa0/9 and fa0/10
• Vlan 22
- Name: Sales
- will support two servers attached to fa0/13 and fa0/14
• Vlan 23
o Name: Engineering
- 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 VTP mode needs to be the same as SwitchA.
• SwitchB must operate in the same spanning tree mode as SwitchA
• No routing is to be configured on SwitchB
• Only the SVI vlan 1 is to be configured and it is to use address 192.168.1.11/24

Inter-switch Connectivity Configuration Requirements
• For operational and security reasons trunking should be unconditional and Vlans 1, 21, 22 and
23 should tagged when traversing the trunk link.
• 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. This mode should be done with a nonproprietary protocol, with SwitchA controlling activation.
• Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk
link.

"Pass Any Exam. Any Time." - www.actualtests.com

76

Cisco 300-115 Exam

Answer: Here are steps:
hostname SWITCH_B
!
!
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
!
interface FastEthernet0/4
switchport trunk allowed vlan 1,21-23
channel-protocol lacp
channel-group 1 mode passive
switchport mode trunk
!
interface FastEthernet0/9
switchport access vlan 21
switchport mode access
spanning-tree portfast
"Pass Any Exam. Any Time." - www.actualtests.com

77

Cisco 300-115 Exam
!
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
!
!
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
!
interface Port-channel 1
switchport mode trunk
switchport trunk encapsulation dot1q
spanning-tree allowed vlans 1,21-23
!
interface Vlan1
ip address 192.168.1.11 255.255.255.0
!
end

"Pass Any Exam. Any Time." - www.actualtests.com

78

com 79 .actualtests. Any Time.www." .Cisco 300-115 Exam 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 ! interface FastEthernet0/3 switchport trunk allowed vlan 1.21-23 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 switchport access vlan 23 switchport mode access ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 ! interface Vlan1 "Pass Any Exam.21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1.

64/27 Hosts H1 and H2 are configured with the correct IP address and default gateway.www. "Pass Any Exam. Due to administrative restrictions and requirements you should not add/delete vlans or create trunk links.32/27 – 190.10. Company policies forbid the use of static or default routing.250.250. All routes must be learned via the EIGRP routing protocol. No trunking has been configured on RouterC.168. Routed interfaces should use the lowest host on a subnet when possible.0/24 – 190. You do not have access to RouteC. Any Time. Routing must only be enabled for the specific subnets shown in the diagram." .10. changes VLAN port assignments or create trunks. SwitchC uses Cisco as the enable password. The following subnets are available to implement this solution: – 10.com 80 . Company policies forbid the use of static or default routing. Note: Due to administrative restrictions and requirements you should not add or delete VLANs. You need to configure SwitchC so that Hosts H1 and H2 can successfully ping the server S1.1. which has a partial configuration and has been attached to RouterC as shown in the topology diagram.200.200.actualtests. RouterC is correctly configured.Cisco 300-115 Exam no ip address shutdown ! ip default-gateway 192. All routes must be learned via EIGRP 65010 routing protocol. Also SwitchC needs to be able to ping server S1.1 ! ! End QUESTION NO: 100 CORRECT TEXT You have been tasked with configuring multilayer SwitchC.

actualtests.Cisco 300-115 Exam "Pass Any Exam. Any Time." .www.com 81 .

Cisco 300-115 Exam 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. Trunking must be established between RouterC and SwitchC. 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.www.com 82 . No trunking requires. + Only use SwitchC for interVLAN routing without using RouterC." .actualtests. Any Time. SwitchC should be configured as a Layer 3 switch (which supports ip routing function as a router).

250. In order to complete the lab." . 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 10.0 0.200. no neighbor "Pass Any Exam.250.0.0/16 is not used anywhere else in this topology. SwitchC(config-if)# no shutdown SwitchC(config-if)# exit SwitchC(config)# int vlan 2 SwitchC(config-if)# ip address 190.64 0.10.10.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED.33 Host2: + Default gateway: 190. Answer: ###BOT_TEXT###gt;ipconfig We will get the default gateways as follows: Host1: + Default gateway: 190. We should check the default gateways on H1 & H2.255. 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. you should expect the ping to SERVER to succeed from the MLS.33 255.0.200.200.255.31 SwitchC(config-router)# network 190.65 Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10.255. so you will not miss within it in the exam. the simulator does not let you assign IP address on Gi0/1 interface.0.2 255.200.0 ->RouterC has used IP 10.actualtests. and from the PCs as well.65 255. in fact it is not necessary because the network 190.0. Also some reports said the “no auto-summary” command can’t be used in the simulator.1 so this is the lowest usable IP address.255.0.255.200. SwitchC# configure terminal SwitchC(config)# int gi0/1 SwitchC(config-if)#no switchport -> without using this command.10.200.10.250.255 SwitchC(config-router)# network 190.0.10.255.250. SwitchC(config-if)# ip address 10.200.10.com 83 .0. gi0/11 interfaces were configured as access ports so we don’t need to configure them in this sim.32 0.224 SwitchC(config-if)# no shutdown SwitchC(config-if)# int vlan 3 SwitchC(config-if)# ip address 190.250.250.Cisco 300-115 Exam switch with SVIs for interVLAN routing. If you use wrong AS number.www. Click on H1 and H2 and type the “ipconfig” command to get their default gateways. also don’t modify/delete any port just do the above configuration.

Any Time. QUESTION NO: 101 You have been asked to install and configure a new switch in a customer network.200. In fact.0. just for sure. only the summarized network 190.200.0.actualtests.32 0.Cisco 300-115 Exam relationship is formed between RouterC and SwitchC.0 is shown.200. But in the exam the sim is just a flash based simulator so we should use two above commands.0. we can use “show run” command to verify.0. we are pretty sure instead of using two commands “network 190.250.31 and “network 190.250. But after finishing the configuration. Use the console access to the existing and new switches to configure and verify correct device configuration.www.0 because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised.64 0.0.com 84 . "Pass Any Exam.0.200." . even without “no auto-summary” command the network still works correctly.31 we can use one simple command “network 190.

" .com 85 .actualtests. Any Time.www.Cisco 300-115 Exam "Pass Any Exam.

com 86 .actualtests. Any Time. Which of the configuration is correct? "Pass Any Exam.www.Cisco 300-115 Exam You are connecting the New_Switch to the LAN topology. the switch has been partially configured and you need to complete the rest of configuration to enable PC1 communication with PC2." .

" . Option B C. Option C D.com 87 . Option D E.Cisco 300-115 Exam A. Any Time.actualtests. Option A B.www. Option E "Pass Any Exam.

actualtests. QUESTION NO: 102 You have been asked to install and configure a new switch in a customer network. Note that the VTP versions supported in this network are 1. 2. the VTP domain name must match." . This leaves only choice D and E. So. step one is to find the correct VTP name on the other switches. We also see from the topology diagram that eth 0/0 of the new switch connects to a PC in VLNA 100.com 88 . leaving only choice D as correct. 3 so either VTP version 2 or 3 can be configured on the new switch. Logging in to SW1 and using the “show vtp status” command we see this: So we know that the VTP domain must be CCNP. "Pass Any Exam.Cisco 300-115 Exam Answer: D Explanation: Within any VTP. Use the console access to the existing and new switches to configure and verify correct device configuration.www. Any Time. so we know that this port must be an access port in VLAN 100.

Any Time." .Cisco 300-115 Exam "Pass Any Exam.actualtests.www.com 89 .

" .actualtests. Any Time.Cisco 300-115 Exam "Pass Any Exam.com 90 .www.

Any Time. VLAN1 B. For which configured VLAN are untagged frames sent over trunk between SW1 and SW2? A.Cisco 300-115 Exam Refer to the configuration.com 91 .actualtests. VLAN 99 C. VLAN 40 E. VLAN 50 F. VLAN 300 Answer: B Explanation: The native VLAN is used for untagged frames sent along a trunk. VLAN 999 D.www. VLAN 200 G. "Pass Any Exam. By issuing the “show interface trunk” command on SW1 and SW2 we see the native VLAN is 99." .

com 92 .Cisco 300-115 Exam QUESTION NO: 103 You have been asked to install and configure a new switch in a customer network. Any Time. Use the console access to the existing and new switches to configure and verify correct device configuration.actualtests.www." . "Pass Any Exam.

com 93 .www.actualtests." . Any Time.Cisco 300-115 Exam "Pass Any Exam.

Cisco 300-115 Exam You are adding new VLANs.www. Configure VLAN 500 and VLAN 600 on SW1 . Which configuration step is valid? A.actualtests.SW2 and SW4 "Pass Any Exam. Configure VLAN 500 & VLAN 600 on both SW1 & SW2 B. Configure VLAN 500 and VLAN 600 on SW2 only D. 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." .com 94 . Configure VLAN 500 and VLAN 600 on SW1 only C. Any Time.

configure vtp mode as off and configure VLAN 500 and VLAN 600.com 95 .www." . "Pass Any Exam.actualtests. On SW2. SW2. configure back to vtp server mode. Answer: A Explanation: By issuing the “show vtp status command on SW2. but SW4 is a client. so we will need to add both VLANs to SW1 and SW2.Cisco 300-115 Exam E. Any Time. and SW4 we see that both SW1 and SW2 are operating in VTP server mode.

Cisco 300-115 Exam

QUESTION NO: 104
You have been asked to install and configure a new switch in a customer network. Use the
console access to the existing and new switches to configure and verify correct device
configuration.

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Cisco 300-115 Exam Examine the VTP configuration. What is the solution to avoid the snooping database from being rebuilt after every "Pass Any Exam. You are required to configure private VLANs for a new server deployment connecting to the SW4 switch. SW4 and New_Switch E. you will need to only disable pruning on the switch that contains the private VLANs. Disable VTP pruning on SW1 only B. only SW4 will connect to servers in a private VLAN. Disable VTP pruning on New_Switch and SW4 only." . Infrastructure Security QUESTION NO: 105 A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database.com 99 . In this case. Topic 2. Disable VTP pruning on SW2 only C. Disable VTP pruning on SW4 only D. Answer: C Explanation: To create private VLANs. Disable VTP pruning on SW2.www. Any Time.actualtests. Which of the following configuration steps will allow creating private VLANs? A.

com 100 . Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting.techrepublic. authorization B. Reference:http://www. Ensure that DHCP server is connected through a trusted interface. This step ensures that database entries are restored after a restart or switchover. Disable Option 82 for DHCP data insertion. auditing Answer: A Explanation: AAA consists of the following three elements: Reference:http://www.www. Apply ip dhcp snooping trust on all interfaces with dynamic addresses. Any Time.html#wp1090479 QUESTION NO: 106 Which portion of AAA looks at what a user has access to? A. B. authentication C. 2.Cisco 300-115 Exam device reboot? A. 5. E.cisco. A DHCP snooping database agent should be configured. Enable DHCP snooping globally." . 3.actualtests. Configure the DHCP snooping database agent.com/en/US/docs/switches/lan/catalyst6500/ios/12.com/blog/data-center/what-is-aaa-and-how-do-you-configure-itin-the-cisco-ios/ "Pass Any Exam. Enable DHCP snooping for all VLANs that are associated with the switch. By default. C. DHCP snooping is inactive on all VLANs. accounting D. Enable DHCP snooping on at least one VLAN. By default. Define and configure the DHCP server. Answer: A Explanation: Minimum DHCP Snooping Configuration The minimum configuration steps for the DHCP snooping feature are as follows: 1. The feature is not active until you complete this step.2SX/configuration/g uide/snoodhcp. 4. D. the trust state of all interfaces is untrusted.

and discards ARP packets with invalid IP-to-MAC address bindings. Trust the interface that is connected to the server with the ip dhcp snooping trust command. B. (config)# aaa authentication login radius local Answer: B Explanation: In the command “aaa authentication login login radius local” the second login is the name of the AAA method.Cisco 300-115 Exam QUESTION NO: 107 Which command creates a login authentication method named “login” that will primarily use RADIUS and fail over to the local user database? A. Disable DHCP snooping information option. Configure a static DHCP snooping binding entry on the switch. D." .www. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. (config)# aaa authentication login default radius local B. It intercepts. Answer: B Explanation: Dynamic ARP inspection is a security feature that validates ARP packets in a network.com 101 . logs. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed. Which solution ensures that the server maintains network reachability in the future? A. 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 "Pass Any Exam. C. Any Time. It also lists radius first then local. For more protection against malicious attacks.actualtests. This capability protects the network from certain man-in-the-middle attacks. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify macaddress command. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable. (config)# aaa authentication login default local radius D. QUESTION NO: 108 A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping. (config)# aaa authentication login login radius local C.

Reference:http://www. To ensure network reachability to the server." . Private VLANs are configured in the context of a single switch and cannot have members on other switches. configure a static DHCP snooping binding entry on the switch. If the ARP packet is received on a trusted interface.cisco.www. B. the switch forwards the packet only if it is valid. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Reference:http://www. the switch forwards the packet without any checks. Enable VTP version 3. Answer: C Explanation: You must configure VTP to transparent mode before you can create a private VLAN. On untrusted interfaces.html QUESTION NO: 109 A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. Disable VTP and manually assign VLANs. the DHCP snooping binding database. Configure VTP Transparent Mode. Private VLANs also carry TLVs that are not known to all types of Cisco switches.actualtests. •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. Ensure all switches are configured as VTP server mode. D.Cisco 300-115 Exam updating the local ARP cache or before forwarding the packet to the appropriate destination.com 102 . Which configuration must be made before the private VLAN is configured? A. Packets from the workstation will be rate limited according to the default values set on the switch.asp?p=29803&seqNum=6 QUESTION NO: 110 DHCP snooping and IP Source Guard have been configured on a switch that connects to several client workstations. Any Time.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/122_55_se/configuration/guide/scg3750/swdynarp. B.ciscopress. The IP address of one of the workstations does not match any entries found in the DHCP binding database. The interface that is connected to the workstation in question will be put into the errdisabled "Pass Any Exam.com/articles/article. C. Which statement describes the outcome of this scenario? A.

You can configure IP source guard with source IP address filtering.com/c/en/us/support/docs/switches/catalyst-3750-seriesswitches/72846-layer2-secftrs-catl3fixed. The switch forwards traffic only when the source IP and MAC addresses match an entry in the IP source binding table. its associated MAC address. The packets originating from the workstation are assumed to be spoofed and will be discarded. If there is no match." . or with source IP and MAC address filtering. The DHCP client interfaces have storm control configured.actualtests. and its associated VLAN number. clients are not receiving an IP address via the DHCP server. Traffic will pass accordingly after the new IP address is populated into the binding database. 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.www. •The MAC address in the DHCP packet is not learned as a secure address. D. IP traffic is filtered based on the source IP and MAC addresses. An entry in this table has an IP address. DHCP snooping must be enabled on all VLANs. Reference:http://www. Answer: A Explanation: When you enable both IP Source Guard and Port Security. B. Which option is the cause of this issue? A.com 103 .cisco. C. or the client is not assigned an IP address.Cisco 300-115 Exam state. When IP source guard is enabled with this option. D. However. even if they are not utilized for dynamic address allocation. Answer: D Explanation: The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). The MAC address of "Pass Any Exam. The DHCP server does not support information option 82. there are two caveats: •The DHCP server must support option 82. Static DHCP bindings are not configured on the switch. using the ip verify source port-security interface configuration command. C. IP traffic is filtered based on the source IP address. the packets are assumed to be spoofed and will be discarded. Any Time. When IP source guard is enabled with this option.html#ipsourceguard QUESTION NO: 111 A DHCP configured router is connected directly to a switch that has been provisioned with DHCP snooping. The switch uses the IP source binding table only wIen IP source guard is enabled. 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.

com 104 . its associated MAC address." . E. except for DHCP packets allowed by DHCP snooping. the switch blocks all IP traffic received on the interface. The interfaces are configured as Layer 3 using the no switchport command.You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering.www. including access and trunk ports. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor. but is unable to configure ip verify source under several of the interfaces. Answer: B Explanation: IP source guard is a security feature that restricts IP traffic on nonrouted.cisco. Reference:http://www. Which option is the cause of the problem? A. D. The switch is configured for sdm prefer routing as the switched database management template.Cisco 300-115 Exam the DHCP client is learned as a secure address only when the switch receives non-DHCP data traffic.html#wp1069615 "Pass Any Exam. A network engineer is configuring the switch for DHCP snooping and IP Source Guard. Any Time. An entry in this table has an IP address.cisco. and its associated VLAN number. Layer 2 interfacesby filtering traffic based on the DHCP snooping binding database and on manually configured IP source bindings. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). A port access control list (ACL) is applied to the interface.html#wp1069615 QUESTION NO: 112 A switch is added into the production network to increase port capacity.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/122_25_see/configuration/guide/3550SCG/swdhcp82. Reference:http://www. The configured SVIs on the switch have been removed for the associated interfaces. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic. The switch uses the IP source binding table only when IP source guard is enabled. You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. IP source guard is supported only on Layer 2 ports. After IP source guard is enabled on an interface. B.actualtests.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/122_25_see/configuration/guide/3550SCG/swdhcp82. The local DHCP server is disabled prior to enabling IP Source Guard. C.

• (Optional) For level-low.www. This value must be less than or equal to the rising suppression value. E. By default. Which command accomplishes this task? "Pass Any Exam. The range is 0.00." . specify the rising threshold level for broadcast. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. D. The switch resumes forwarding broadcasts when they are below 65% of bandwidth. Any Time. B. The keywords have these meanings: • For level. or unicast traffic as a percentage (up to two decimalplaces) of the bandwidth. the network team has been overwhelmed with port reset requests.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/122_25_see/configuration/guide/3550SCG/swtrafc.html QUESTION NO: 114 After port security is deployed throughout an enterprise campus. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold. The port forwards traffic when traffic drops below this level.00 to 100. storm control is disabled. They decide to configure the network to automate the process of re-enabling user ports.com 105 . it is set to the rising suppression level.00. C. The switch drops broadcasts when they reach 75% of bandwidth. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth. multicast. or unicast storm control. multicast. In which three ways does this command impact the traffic? (Choose three.cisco. the broadcast keyword was used so only broadcast traffic is limited.00 to 100. Only broadcast traffic is limited by this particular storm control configuration. F.) A.D.F Explanation: storm-control{broadcast|multicast|unicast}level{level[level-low] |ppspps[pps-low]} Configure broadcast. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. The range is 0. In this case. Reference:http://www. Answer: C.Cisco 300-115 Exam QUESTION NO: 113 The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server. The port blocks traffic when the rising threshold is reached. If you do not configure a falling suppression level.actualtests.

actualtests. switch# show mac address-table address <mac address> Answer: A.Cisco 300-115 Exam A. switch(config)# switchport port-security protect D.com/c/en/us/td/docs/switches/lan/catalyst4500/122/53SG/configuration/config/port_sec.com 106 .) A.pdf QUESTION NO: 115 The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. including the switch port that the particular host is using. 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." . switch# show mac address-table B. switch# show port-security C. switch(config)# errdisable recovery interval 180 B. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port. Any Time.E Explanation: These two commands will show the MAC address table. If a port is in per-VLAN errdisable mode. Which two commands help trace this PC when the MAC address is known? (Choose two. 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 Total MAC addresses: 50 "Pass Any Exam. switch(config)# switchport port-security aging type inactivity E.cisco. 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. switch(config)# errdisable recovery cause psecure-violation C. switch# show ip arp inspection E. Reference:http://www.www. switch# show ip verify source D. This is the default mode. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state.

creating excessivetraffic and degrading network performance.1540 Dynamic 2 FastEthernet0/5 0010.e289 Dynamic 1 FastEthernet0/1 0010.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_22ea/SCG/scg/swtrafc.cisco. unicast. mistakes in network configuration. 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. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. Reference:http://www. or multicast packets.html QUESTION NO: 117 Which command globally enables AAA on a device? "Pass Any Exam. Storm control is configured for the switch as a whole but operates on a per-port basis.Cisco 300-115 Exam Non-static Address Table: Destination Address Address Type VLAN Destination Port ------------------. multicast.-------------------0010.---.-----------. or unicast storm on a port. By default. SDM routing C.1545 Dynamic 2 FastEthernet0/5 QUESTION NO: 116 While troubleshooting a network outage. Dynamic ARP Inspection Answer: A Explanation: Storm control prevents traffic on a LAN from being disrupted by a broadcast. storm control B.7b00.0de0. Any Time.www. Cisco IOS parser D. storm control is disabled.7b00. integrated routing and bridging E. Which option decreases consumption of bandwidth used by broadcast traffic? A.actualtests." . Errors in the protocol-stack implementation. You can also set the switch to shut down the port when the rising threshold is reached.com 107 . or users issuing a denial-of-service attack can cause a storm.

Cisco 300-115 Exam
A. aaa new-model
B. aaa authentication
C. aaa authorization
D. aaa accounting
Answer: A
Explanation:
To configure AAA authentication, enable AAA by using the aaa new-model global configuration
command. AAA features are not available for use until you enable AAA globally by issuing the aaa
new-model command.
Reference:http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scf
athen.html

QUESTION NO: 118
Which AAA Authorization type includes PPP, SLIP, and ARAP connections?
A. network
B. IP mobile
C. EXEC
D. auth-proxy
Answer: A
Explanation:
Method lists for authorization define the ways that authorization will be performed and the
sequence in which these methods will be performed. A method list is simply a named list
describing the authorization methods to be queried (such as RADIUS or TACACS+), in sequence.
Method lists enable you to designate one or more security protocols to be used for authorization,
thus ensuring a backup system in case the initial method fails. Cisco IOS software uses the first
method listed to authorize users for specific network services; if that method fails to respond, the
Cisco IOS software selects the next method listed in the method list. This process continues until
there is successful communication with a listed authorization method, or all methods defined are
exhausted.
Method lists are specific to the authorization type requested:
•Auth-proxy—Applies specific security policies on a per-user basis. For detailed information on the
authentication proxy feature, refer to the chapter "Configuring Authentication Proxy" in the "Traffic
Filtering“and Firewalls" part of this book”
•Comma“ds—Applies to the EXEC mode com”ands a user issues. Command authorization
attempts authorization for all EXEC mode commands, including global configuration commands,
associated with a specific privilege level.

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•EXEC—Applies to the attributes associated with a user EXEC terminal session.
•Network—Applies to network connections. This can include a PPP, SLIP, or ARAP
connection.
•Reverse Access—Applies to reverse Telnet sessions.
When you create a named method list, you are defining a particular list of authorization methods
for the indicated authorization type.
Reference:http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scf
athor.html

QUESTION NO: 119
Which authentication service is needed to configure 802.1x?
A. RADIUS with EAP Extension
B. TACACS+
C. RADIUS with CoA
D. RADIUS using VSA
Answer: A
Explanation: lanation:
With 802.1x, the authentication server—performs the actual authentication of 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. Because the switch acts as the
proxy,the authentication service is transparent to the client.The Remote Authentication Dial-In
User Service (RADIUS) security system with Extensible Authentication Protocol (EAP)
extensions is the only supported authentication server.
Reference:http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2940/software/release/121_19_ea1/configuration/guide/2940scg_1/sw8021x.pdf

QUESTION NO: 120
Refer to the exhibit.

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Which login credentials are required when connecting to the console port in this output?
A. none required
B. 1sernamee cisco with password cisco
C. no username with password linepass
D. login authentication default
Answer: A
Explanation:
Here the console has been configured with the NO_AUTH name, which lists none as the
authentication method. None means no authentication, meaning that credentials are not required
and all sessions are allowed access immediately.

QUESTION NO: 121
Refer to the exhibit.

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com 111 . where the configured authentication method is named “default.Cisco 300-115 Exam When a network administrator is attempting an SSH connection to the device. then if that fails use the local user database.www. RADIUS server D. trusted hosts with leased IP addresses C. RADIUS server.” The AAA default login preference is stated in order from first to last. if that fails use the line password. Line password. RADIUS server. untrusted hosts with leased IP addresses B. local username. trusted hosts with available IP addresses Answer: A Explanation: "Pass Any Exam. RADIUS server. QUESTION NO: 122 Which type of information does the DHCP snooping binding database contain? A. Finally.actualtests. Line password. Any Time. local username C. line password. in which order does the device check the login credentials? A. untrusted hosts with available IP addresses D. local username." . line password B. so here the “aaa authentication login default group radius local line” means to use RADIUS first. local username Answer: A Explanation: sessions use the vty lines.

ip dhcp snooping trust "Pass Any Exam.Cisco 300-115 Exam DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. Reference: http://www. Dynamic ARP Inspection B.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/snoodhcp. • Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts.html QUESTION NO: 124 Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A.com 112 .actualtests. DHCP snooping Answer: A Explanation: Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database. On untrusted interfaces. Reference:http://www. the switch forwards the packet without any checks. the DHCP snooping binding database.www.com/c/en/us/support/docs/switches/catalyst-3750-seriesswitches/72846-layer2-secftrs-catl3fixed. which contains information about untrusted hosts with leased IP addresses. storm control C. Any Time. • Builds and maintains the DHCP snooping binding database. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch.pdf QUESTION NO: 123 Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A. VTP pruning D.cisco. • Rate-limits DHCP traffic from trusted and untrusted sources. the switch forwards the packet only if it is valid. If the ARP packet is received on a trusted interface." . The DHCP snooping feature performs the following activities: • Validates DHCP messages received from untrusted sources and filters out invalid messages.

make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled. as long as the promiscuous port and secondary VLANs are within the same primary VLAN. configure the port as trusted by entering the “ip dhcp snooping trust” interface configuration command. trunk port Answer: A Explanation: The types of private VLAN ports are as follows: •Promiscuous—A promiscuous port belongs to the primary VLAN. associated to that port. "Pass Any Exam. and enable DHCP globally on the switch. You can associate a secondary VLAN to more than one promiscuous port. ip dhcp snooping C." .actualtests.www.The promiscuous port can communicate with all interfaces. follow these guidelines: •DHCP snooping is not active until you enable the feature on at least one VLAN. including the community and isolated host ports. including the community and isolated host ports? A. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. that belong to those secondary VLANs associated to the promiscuous port and associated with the primary VLAN. You may want to do this for loadbalancing or redundancy purposes.Cisco 300-115 Exam B. •Before globally enabling DHCP snooping on the switch. You can also have secondary VLANs that are not associated to any promiscuous port. •If a Layer 2 LAN port is connected to a DHCP client. Reference:http://www. or no secondary VLANs. Any Time.com 113 . isolated port C. You can have several promiscuous ports in a primary VLAN.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/snoodhcp. community port D. •If a Layer 2 LAN port is connected to a DHCP server. ip dhcp trust D. promiscuous port B.html QUESTION NO: 125 Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces. ip dhcp snooping information Answer: A Explanation: When configuring DHCP snooping.cisco. Each promiscuous port can have several secondary VLANs.

" . Community ports communicate with other ports in the same community VLAN and with associated promiscuous ports. •Isolated VLAN —An isolated VLAN is a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports. •Community—A community port is a host port that belongs to a community secondary VLAN.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/ guide/cli/CLIConfigurationGuide/PrivateVLANs. except that it can communicate with associated promiscuous ports. You can have more than one isolated port in a specified isolated VLAN. Traffic received from an isolated port is forwarded only to promiscuous ports. primary VLAN C. Any Time. Reference:http://www. This port has complete isolation from other ports within the same private VLAN domain. both isolated and community. These interfaces are isolated from all other interfaces in other communities and from all isolated ports within the private VLAN domain. and the traffic from each isolated port also remains completely separate. community VLAN D. but these ports cannot communicate with ports in any other "Pass Any Exam.Cisco 300-115 Exam •Isolated—An isolated port is a host port that belongs to an isolated secondary VLAN. and Community Private VLANs Primary VLANs and the two types of secondary VLANs (isolated and community) have these characteristics: •Primary VLAN— The primary VLAN carries traffic from the promiscuous ports to the host ports. You can configure multiple community VLANs in a private VLAN domain.com 114 . promiscuous VLAN Answer: A Explanation: Understanding Primary.You can configure multiple isolated VLANs in a private VLAN domain. and to other promiscuous ports. Isolated. The ports within one community can communicate. Each port is completely isolated from all other ports in the isolated VLAN. •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. Private VLANs block all traffic to isolatedports except traffic from promiscuous ports. all the traffic remains isolated within each one.cisco. isolated VLAN B.html QUESTION NO: 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.www. Each isolated VLAN can have several isolated ports.actualtests.

" .html QUESTION NO: 127 Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database.html QUESTION NO: 128 When IP Source Guard with source IP filtering is enabled on an interface.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 . dynamic ARP database C. Reference:http://www.cisco.This database is built by DHCP snooping when it is enabled on the VLANs and on the device. storm control "Pass Any Exam. which feature must be enabled on the access VLAN for that interface? A.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/ guide/cli/CLIConfigurationGuide/PrivateVLANs. • Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet. Reference:http://www.actualtests. DHCP snooping B. static ARP database Answer: A 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.www. dynamic routing database D. DHCP snooping database B. Any Time.Cisco 300-115 Exam community or isolated VLAN in the private VLAN.com 115 . • Drops invalid ARP packets.cisco. It may also contain static entries that you have created.

Any Time. the source IP address filter is applied on all the VLANs." . pdf "Pass Any Exam. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack. VTP pruning D. multicast.com/c/en/us/td/docs/routers/7600/ios/122SR/configuration/guide/swcg/dos. • You can enable this feature when 802. storm control B. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. private VLAN Answer: A Explanation: IP Source Guard Configuration Guidelines • You can configure static IP bindings only on nonrouted ports.www. this error message appears: Static IP source binding can only be configured on switch port.actualtests. which creates excessive traffic and degrades network performance.Cisco 300-115 Exam C. DHCP snooping must be enabled on the access VLAN for that interface. spanning-tree portfast D. Reference:http://www. • When IP source guard with source IP filtering is enabled on an interface. If you enter the ip source binding mac-address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface. • If you are enabling IP source guard on a trunk interface with multiple VLANs and DHCP snooping is enabled on all the VLANs. port security C.com 116 .1x port-based authentication is enabled.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/150_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960x_cg_chapter_01110. Reference:http://3c3cc.cisco.html QUESTION NO: 129 Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic? A.

1x authenticates. router(config-if)#storm-control action trap C. It allows port security to secure the IP address that 802. router(config-if)#storm-control action shutdown B. D. Which option describes what this configuration allows? A.Cisco 300-115 Exam QUESTION NO: 130 Which command would a network engineer apply to error-disable a switchport when a packetstorm is detected? A.1x to secure address port -security authenticates.cisco. router(config-if)#storm-control action error D. or theshutdownandno shutdown commands to reenable ports.html QUESTION NO: 131 A network engineer configures port security and 802. It allows 802. router(config-if)#storm-control action enable Answer: A Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface. It allows 802. "Passthe AnyIPExam. Anythat Time. It allows port security to secure the MAC address that 802. Step 2 Router(config-if)#storm-control actionshutdown (Optional) Configures traffic storm control to error-disable ports when a traffic storm occurs. B. • Enter theno storm-control action shutdowncommand to revert to the default action (drop). C.actualtests." www.1x to secure the MAC address that port security authenticates. perform this task: Command Purpose Step 1 Router(config)#interface{{type1 slot/port} | {port-channelnumber}} Selects an interface to configure.1x authenticates. • Use the error disable detection and recovery feature. Reference:http://www.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/storm.1x on the same interface.com 117 .

Although sticky secure addresses can be manually configured. you can configure MAC addresses to be sticky. Port security secures the MAC addresses that 802. stored in the address table. Any Time.1X on the same interfaces.1X processes packets before port securityprocesses them.1X is already preventing inbound traffic on the interface from unknown MAC addresses. 802. and added to the running configuration. If these addresses are saved in the configuration file. 802.1X and Port Security You can configure port security and 802. Reference:http://www.cisco.cisco. destination port for SPAN C. so when you enable both on an interface." . static trunk ports B.com 118 . sticky B. and added to the running configuration? A. Reference:http://www.Cisco 300-115 Exam Answer: A Explanation: 802. secure Answer: A Explanation: With port security.html QUESTION NO: 132 Which feature describes MAC addresses that are dynamically learned or manually configured.www. static D. EtherChannel port group "Pass Any Exam. stored in the address table.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nxos/security/configuration/guide/sec_nx-os-cfg/sec_portsec. the interface does not need to dynamically relearn them when the switch restarts. These can be dynamically learned or manually configured. it is not recommended.com/c/en/us/td/docs/switches/lan/catalyst4500/122/25ew/configuration/guide/conf/port_sec.1X authenticates. dynamic C.pdf QUESTION NO: 133 On which interface can port security be configured? A.actualtests.

" .com 119 . Host port further divides in two types – Isolated port (I-Port) and Community port (C-port). dynamic access point Answer: A Explanation: Port Security and Port Types You can configure port security only on Layer 2 interfaces. trunked Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. Reference: http://en.html QUESTION NO: 134 When you configure private VLANs on a switch. which type of port must you configure the gateway router port as? "Pass Any Exam. promiscuous B. community C.cisco. isolated D.Cisco 300-115 Exam D.wikipedia. •SPAN ports—You can configure port security on SPAN source ports but not on SPAN destination ports.org/wiki/Private_VLAN QUESTION NO: 135 When you configure a private VLAN. which port type connects the switch to the gateway router? A. Any Time. Reference:http://www. On an access port.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nxos/security/configuration/guide/sec_nx-os-cfg/sec_portsec.actualtests. •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.www. The device allows VLAN maximums only for VLANs associated with the trunk port. VLAN maximums are not useful for access ports. port security applies only to the access VLAN. 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.

" .40. The topology diagram indicates their layer 2 mapping. • Devices on VLAN 20 are restricted to the subnet of 172. Corporate polices do not allow layer 3 functionality to be enabled on the switches.www. 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. Host port further divides in two types – Isolated port (I-Port) and Community port (C-port). The Radius server and application servers will be installed at a future date.0/24 should be allowed on VLAN 20.40. Reference: http://en. access port Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. promiscuous port B. community port D.120. • Filtering should be implemented as close to the serverfarm as possible.Cisco 300-115 Exam A. VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server. You must use the available IOS switch features. DSW1 and ASW1.46 • Radius key: rad123 • Authentication should be implemented as close to the host as possible.40.com 120 . You have been tasked with implementing the above access control as a pre-condition to installing the servers. Any Time. • Packets from devices in any other address range should be dropped on VLAN 20. isolated port C. Authentication is to be done via a Radius server: • Radius server host: 172. • Packets from devices in the subnet of 172.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches.actualtests.wikipedia.120. "Pass Any Exam. For security reasons.120.org/wiki/Private_VLAN QUESTION NO: 136 CORRECT TEXT SWITCH.0/24.

" .com 121 .actualtests.Cisco 300-115 Exam "Pass Any Exam. Any Time.www.

www.40.com 122 .0.Cisco 300-115 Exam Answer: The configuration: Step1: Console to ASW1 from PC console 1 ASW1(config)#aaa new-model ASW1(config)#radius-server host 172.120. Any Time.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.actualtests.0 0.46 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." .39.0.120.

" . standby track Answer: D 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 not configured for HSRP. Reference:http://www. 100 C.1_19_ ea1/configuration/guide/swhsrp. the hot standby priority on the device on which tracking has been configured decreases by 10. If an interface is not tracked. The highest number represents the highest priority.com 123 . • "Pass Any Exam.the default priority is 100.html QUESTION NO: 138 What is the default HSRP priority? A. Any Time. its state changes do not affect the hot standby priority of the configured device.Cisco 300-115 Exam Topic 3. backup interface D. Infrastructure Services QUESTION NO: 137 Which configuration command ties the router hot standby priority to the availability of its interfaces? A.com/en/US/docs/switches/lan/catalyst3550/software/release/12. The range is 1 to 255. 120 D. standby priority C. standby group B.www. When a tracked interface fails. 50 B. you can configure a separate list of interfaces to be tracked. For each interface configured for hot standby.actualtests.cisco. 1024 Answer: B Explanation: standby[group-number]prioritypriority [preempt[delaydelay]] Set apriorityvalue used in choosing the active router.

removes the need for a First Hop Redundancy Protocol Answer: D 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.ht ml QUESTION NO: 140 Which First Hop Redundancy Protocol is an IEEE Standard? A. reduces cost B. it assumes control as the active router. VSS eliminates the need for FHRP at the aggregation layer of the data center. simplifies configuration C.html#wp1044327 QUESTION NO: 139 Which option is a benefit of using VSS? A. Any Time." .Cisco 300-115 Exam (Optional)group-number—The group number to which the command applies. The VSS system creates a single logical router at Layer 3. Use thenoform of the command to restore the default values.actualtests.www. This VSS routing instance fulfills this first-hop role without the need for a dedicated protocol. Reference:http://www.com/en/US/docs/switches/lan/catalyst3550/software/release/12.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate. the default is 0 (no delay before taking over).cisco. HSRP "Pass Any Exam. provides two independent supervisors with two different control planes D.com 124 . • (Optional)preempt—Select so that when the local router has a higher priority than the active router. GLBP B.cisco. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes. Reference:http://www. • (Optional)delay—Set to cause the local router to postpone taking over the active role for the shown number of seconds. The range is 0 to 36000 (1 hour). The VSS IP route is highly available due to MEC and the resiliency of the VSS system.1_19_ ea1/configuration/guide/swhsrp.

.Use virtual ip address.www.1 AVG (Active Virtual Gateway).1 master router. ..up to 1024 virtual routers (GLBP groups) per physical interface.1 standby router.1 or more listening routers.up to 4 AVF routers on the group (Active Virtual Forwarder) passing traffic.1 or more backup routers. VRRP D." . 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 Priority2-Highest IP (tiebreaker) Optimization features Tracking yes yes yes Preempt yes yes yes Timer adjustments "Pass Any Exam. .com 125 .Cisco 300-115 Exam C.. .. OSPF Answer: C 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 . . .actualtests.Use virtual ip address. if not. the one with highest priority become master.1 active router. Any Time.Can use real router ip address..

Multiple VRRP group per interface/SVI/routed int.actualtests.102-udp 1985 (version2) 224. .(generally through DHCP) Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing.0. Any Time.0. Load-balancing oriented.Multiple HSRP group per interface/SVI/routed int.www.0." .0.0. Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing. .Weighted algorithm.0.2 – udp 1985 (version1)224.Cisco 300-115 Exam yes yes yes Traffic type 224.com 126 .wordpress.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 .0.18 – IP 112 224.Host-dependent algorithm..(generally through DHCP) Clients are transparently updated with virtual MAC according to load-balancing algorithm through ARP requesting a unique virtual gateway.0.Round-Robin algorithm (default). Reference: http://cciethebeginning.com/2008/08/23/router-high-availability-protocolcomparison-2/ QUESTION NO: 141 What is the default amount by which the hot standby priority for the router is decremented or incremented when the interface goes down or comes back up? "Pass Any Exam.

cisco.actualtests. Gateways are assigned the next MAC address in sequence. 8 Answer: B Explanation: GLBP Virtual MAC Address Assignment A GLBP group allows up to four virtual MAC addresses per group. its state changes do not affect the hot standby priority of the configured device.com 127 . 1 B.cisco. the hot standby priority on the device on which trackinghas been configured decreases by 10. Reference:http://www. you can configure a separate list of interfaces to be tracked. If an interface is not tracked.Cisco 300-115 Exam A.1_19_ea1/config uration/guide/swhsrp. Any Time. 2 B. For each interface configured for hot standby." . Other group members request a virtual MAC address after they discover the AVG through hello messages.com/en/US/docs/switches/lan/catalyst3550/software/release/12.html#wp1039 651 "Pass Any Exam. When a tracked interface fails.html QUESTION NO: 142 What is the maximum number of virtual MAC addresses that GLBP allows per group? A. 4 C. The AVG is responsible for assigning the virtual MAC addresses to each member of the group.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. 6 D.www. A virtual forwarder that is assigned a virtual MAC address by the AVG is known as a primary virtual forwarder. A virtual forwarder that has learned the virtual MAC address is referred to as a secondary virtual forwarder. Reference: http://www. 5 C. 10 D. Other members of the GLBP group learn the virtual MAC addresses from hello messages. 15 Answer: C 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 not configured for HSRP.

active virtual gateway D.actualtests. designated router Answer: C Explanation: GLBP Active Virtual Gateway Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address. Reference:http://www.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.com 128 . virtual router active D. active virtual forwarder B. Any Time. virtual router master B.Cisco 300-115 Exam QUESTION NO: 143 Which gateway role is responsible for answering ARP requests for the virtual IP address in GLBP? A. virtual router standby Answer: A Explanation: VRRP Definitions VRRP Router A router running the Virtual Router Redundancy "Pass Any Exam. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address. The AVG assigns a virtual MAC address to each member of the GLBP group.cisco.html QUESTION NO: 144 Which VRRP router is responsible for forwarding packets that are sent to the IP addresses of the virtual router? A. Other group members provide backup for the AVG in the event that the AVG becomes unavailable." . virtual router backup C.www. active virtual router C. Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses.

etc.www.com 129 . standby 1 track 100 "Pass Any Exam.Note that if the IP address owner is available. 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. then it will always become the Master. This is the router that.org/rfc/rfc3768.Cisco 300-115 Exam Protocol. Primary IP Address An IP address selected from the set of real interface addresses. A VRRP Router may backup one or more virtual routers. Reference:http://www. TCP connections. Virtual Router An abstract object managed by VRRP that acts as a default router for hosts on a shared LAN. It may participate in one or more virtual routers. Any Time.actualtests. when up.ietf.txt QUESTION NO: 145 Which command correctly configures standby tracking for group 1 using the default decrement priority value? A. One possible selection algorithm is to always select the first address. VRRP advertisements are always sent using the primary IP address as the source of the IP packet. and answering ARP requests for these IP addresses. IP Address Owner The VRRP router that has the virtual router's IP address(es) as real interface address(es’. It consists of a Virtual Router Identifier and a set of associated IP address(es) across a common LAN. will respond to packets addressed to one of these IP addresses for ICMP pings." .

QUESTION NO: 146 Which command configures an HSRP group to become a slave of another HSRP group? A. standby group backup Answer: C Explanation: Perform this task to configure multiple HSRP client groups. standby slave B.www.com 130 .actualtests.com/en/US/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-hsrpmgo. HSRP client groups follow the master HSRP with a slight.Cisco 300-115 Exam B. There is no need to explicitly state the value if the desired value is the default value. random delay so that all client groups do not change at the same time. Which option describes the reason for this message in a GLBP configuration? "Pass Any Exam. Reference:http://www. The “standby follow” command configures an HSRP group to become a slave of another HSRP group. standby 1 track 100 decrement 1 C. standby 1 track 100 decrement 5 D." .cisco.html QUESTION NO: 147 Refer to the exhibit. Any Time. standby group track C. standby follow D. standby 1 track 100 decrement 20 Answer: A Explanation: The default decrement value for HSRP standby tracking is 10.

255. The distribution switches are configured to use HSRP to provide a high availability solution. Using the running configurations and show commands." . When configuring the multicast boundary command. Unavailable GLBP active forwarder B. • 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. permit the Multicast address by permit 224. is a medium sized company.Cisco 300-115 Exam A. Incorrect GLBP IP address C. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. then some other device with a MAC address reports this error message.0. Currently all interfaces are up. Verify the spanning-tree topology and check if there is any layer2 loop. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. If the MAC address of the interface is the same as the one reported in the error message. you have been asked to investigate and respond to the following question.0 15. HSRP configured on same interface as GLBP D. "Pass Any Exam.www.shtml#dr QUESTION NO: 148 Ferris Plastics. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.com 131 . then it indicates that this router is receiving its own hello packets sent. Troubleshooting has identified several issues. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.0.cisco. Inc.0. If the interface MAC address is different from the one reported in the error message. In order to resolve this issue.255.255. issue the show interface command to verify the MAC address of the interface.actualtests. Any Time. Reference:http://www.0. unless GigabitEthernet1/0/1 on backup device has also failed.102 and User Datagram Protocol (UDP) port 3222 (source and destination). with an enterprise network (access.com/en/US/products/hw/switches/ps708/products_configuration_exam ple09186a00807d2520.

www.actualtests." .com 132 . Any Time.Cisco 300-115 Exam "Pass Any Exam.

Cisco 300-115 Exam

During routine maintenance, GigabitEthernet1/0/1 on DSW1 was shut down. All other interfaces
were up. DSW2 became the active HSRP device for VLAN 101 as desired. However, after
GigabitEthemet1/0/1 on DSW1 was reactivated, DSW1 did not become the active router for VLAN
101 as desired. What needs to be done to make the group for VLAN 101 function properly?
A. Enable preempt in the VLAN 101 HSRP group on DSW1.
B. Disable preempt in the VLAN 101 HSRP group on DSW2’s.
C. In the VLAN 101 HSRP group on DSW1, decrease the priority value to avaluethatis less‘than
the priority value configured in the VLAN 101 HSRP group on DSW2.
D. 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.
Answer: A
Explanation:

QUESTION NO: 149
"Pass Any Exam. Any Time." - www.actualtests.com

133

Cisco 300-115 Exam
Ferris Plastics, Inc. is a medium sized company, with an enterprise network (access, distribution
and core switches) that provides LAN connectivity from user PCs to corporate servers. The
distribution switches are configured to use HSRP to provide a high availability solution.
• 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, unless GigabitEthernet1/0/1 on backup device has also failed.
Troubleshooting has identified several issues. Currently all interfaces are up. Using the running
configurations and show commands, you have been asked to investigate and respond to the
following question.

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134

Cisco 300-115 Exam

During routine maintenance, it became necessary to shut down the GigabitEthernet1/0/1 interface
on DSW1. All other interfaces were up. During this time, DSW1 remained the active device for the
VLAN 102 HSRP group. You have determined that there is an issue with the decrement value in
the track command for the VLAN 102 HSRP group. What needs to be done to make the group
function properly?

A. The decrement value on DSW1 should be greaterthan 5 and less than 15. 0

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135

D. is a medium sized company. Troubleshooting has identified several issues. Using the running configurations and show commands. with an enterprise network (access. Answer: C Explanation: Use“show run”command to show. E. you have been asked to investigate and respond to the following question. Because 200 – 11 = 189 < 190 (priority of Vlan102 on DS2). The decrement value on DSWTs should be greaterthan 190 and less than 200. Priority value is 200. QUESTION NO: 150 Ferris Plastics. The left Vlan102 is console1 of DS1. "Pass Any Exam.Cisco 300-115 Exam B." . The decrement value on DSW1 should be greaterthan 11 and less than 19. unless GigabitEthernet1/0/1 on backup device has also failed. Currently all interfaces are up.com 136 . • 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. we should decrement value in the track command from 11 to 18. The decrement value on DSWTs should be greaterthan 195 and less than 205. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.www.actualtests. Any Time. C. The distribution switches are configured to use HSRP to provide a high availability solution. The decrement value on DSW1 should be greaterthan 9 and less than 15. Inc.

Cisco 300-115 Exam "Pass Any Exam.www. Any Time.com 137 ." .actualtests.

com 138 . DSW2 is configured to decrement the priority by 50 if this interface goes down. B. On DSW1. disable preempt. Answer: C Explanation: From the output shown below of the HSRP status of DSW2. increase the priority value to a value greater 200 and less than 250. C. Any Time." . DSW2 has not become the active device for the VLAN 103 HSRP group. decrease the priority value to a value less than 190 and greater than 150. We need to increase the priority of DSW2 to greater than 200. but less than 250. As related to the VLAN 103 HSRP group. "Pass Any Exam.actualtests.www. D. On DSW2. but it should be less than 250 so that if the gig 1/0/1 interface goes down. what can be done to make the group function properly? A. while the local priority is 190. On DSW1.Cisco 300-115 Exam All interfaces are active. On DSW2. we see that the active router has a priority of 200. increase the decrement value in the track command to a value greater than 10 and less than 50. DSW1 will become active. so the correct answer is to increase the priority to more than 200.

Inc. you have been asked to investigate and respond to the following question. is a medium sized company. unless GigabitEthernet1/0/1 on backup device has also failed. Using the running configurations and show commands. The distribution switches are configured to use HSRP to provide a high availability solution.com 139 . • 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.Cisco 300-115 Exam QUESTION NO: 151 Ferris Plastics. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers." . Troubleshooting has identified several issues. Currently all interfaces are up.actualtests. Any Time. "Pass Any Exam. with an enterprise network (access.www.

actualtests. Any Time." .Cisco 300-115 Exam "Pass Any Exam.com 140 .www.

On DSW1. During this time. Vlan104 (left): 150 – 1 = 149. Answer: C Explanation: We should NOT disable preempt on DS1. On DSW1. Example: if we are disable preempt on DS1. "Pass Any Exam. DSW1 became the active router for the VLAN 104HSRP group.Cisco 300-115 Exam During routine maintenance. B. decrease the decrement value in the track command to a value less than 1. If increase the decrement in the track value to a value greater than 6 (> or = 6). C. It can not become active device when G1/0/1 on DS2 fail. As related to the VLAN 104HSRP group. Vlan104 (left): 150 – 6 = 144. you will make Vlan104’s HSRP group fail function. what can to be done to make the group function properly? A. By do that. disable preempt. On DSW1.actualtests. G0/1/0 on DS1 & DS2 is shutdown. All other interfaces were up. Vlan104 (right): 200 – 155 = 145. it became necessary to shut down the GigabitEthernet1/0/1 interface on DSW1 and DSW2. D.com 141 . Result is priority 149 > 145 (Vlan104 on DS1 is active). In this question.www. On DSW2 decrease the priority value to a value less than 150. Result is priority 144 < 145 (vlan104 on DS2 is active). Any Time." . increase the decrement value in the track command to a value greater than 6.

Currently all interfaces are up." . with an enterprise network (access.www. • 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. is a medium sized company.com 142 . unless GigabitEthernet1/0/1 on backup device has also failed. 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.actualtests. Troubleshooting has identified several issues. Inc. you have been asked to investigate and respond to the following question. "Pass Any Exam.Cisco 300-115 Exam QUESTION NO: 152 Ferris Plastics. Any Time. Using the running configurations and show commands.

100 C. 200 Answer: B Explanation: "Pass Any Exam.com 143 ." .actualtests.Cisco 300-115 Exam What is the priority value of the VLAN 105 HSRP group on DSW2? A. 150 D.www. Any Time. 50 B.

"Pass Any Exam. Any Time. Currently all interfaces are up.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. with an enterprise network (access. The distribution switches are configured to use HSRP to provide a high availability solution.Cisco 300-115 Exam Use "show standby brief" command on console2.www. you have been asked to investigate and respond to the following question. is a medium sized company." . QUESTION NO: 153 Ferris Plastics. Using the running configurations and show commands. • DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 • D–W2 .actualtests. unless GigabitEthernet1/0/1 on backup device has also failed.com 144 . Inc. Very easy to se“priority of Vlan1”5 is 100. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.

www. Any Time.actualtests.com 145 .Cisco 300-115 Exam "Pass Any Exam." .

100 C." .Cisco 300-115 Exam If GigabitEthemet1/0/1 on DSW2 is shutdown. 150 D.actualtests. 90 B. 200 Answer: A Explanation: Explanation As seen below. what will be the resulting priority value of the VLAN 105 HSRP group on router DSW2? A. "Pass Any Exam.www.com 146 . Any Time. 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. the current priority for VLAN 105 is 100.

Cisco 300-115 Exam QUESTION NO: 154 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.actualtests. Any Time." .www. They have questions about how these two devices will perform in the event of a device failure. "Pass Any Exam.com 147 .

com 148 . R1-50 %.0/24 subnet is being forwarded through R1? A. Any Time. R2-50% C." .www. R1-0% B.Cisco 300-115 Exam What percentage of the outgoing traffic from the 172.10.actualtests.16. R2-100% D. R1-100% "Pass Any Exam.

QUESTION NO: 155 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. so all outgoing traffic will be forwarded to R1. Any Time.actualtests.www." . They have questions about how these two devices will perform in the event of a device failure. we see that R1 is the active standby router for the Ethernet 0/0 link. "Pass Any Exam.Cisco 300-115 Exam Answer: D Explanation: Based on the following output.com 149 .

com 150 .actualtests.Cisco 300-115 Exam "Pass Any Exam. Any Time.www." .

If router R1 interface Etherne0/0 goes down and recovers." .Cisco 300-115 Exam Refer to the exhibit. The interface will have its current priority incremented by 60 for HSRP group 1 E. The interface will have the priority decremented by 40 for HSRP group 1. The interface will have the priority decremented by 60 for HSRP group 1 C. which of the statement regarding HSRP priority is true? A. The interface will have its current priority incremented by 40 for HSRP group 1 D.actualtests. The interface will default to the a priority of 100 for HSRP group 1 Answer: C Explanation: Here is the HSRP configuration seen on R1: "Pass Any Exam. Any Time.com 151 . B.www.

QUESTION NO: 156 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.actualtests." . it will then increment it by 40 back to 130 for HSRP group 1. However. when the Ethernet 0/0 interface goes down.Cisco 300-115 Exam Here. Any Time.www. "Pass Any Exam. when it comes back up. They have questions about how these two devices will perform in the event of a device failure. the standby 1 track decrement command will lower the priority from 130 to 90.com 152 .

com 153 . The HSRP group authentication is misconfigured C. Any Time.actualtests.Cisco 300-115 Exam What issue is causing Router R1 and R2 to both be displayed as the HSRP active router for group 2? A. The HSRP timers mismatch "Pass Any Exam. The HSRP Hello packets are blocked D. The HSRP group number mismatch B." .www.

www. Any Time. but not on R1: This can be further verified by issuing the “show standby” command on each router. "Pass Any Exam.Cisco 300-115 Exam E." . The HSRP group priorities are different Answer: B Explanation: Based on the configuration output.actualtests. we see that authentication is configured on R2.com 154 .

Any Time.www.com 155 .actualtests. "Pass Any Exam.Cisco 300-115 Exam QUESTION NO: 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." .

ac02 B.0000. 4000.0000. Any Time.actualtests.Cisco 300-115 Exam What is the virtual mac-address of HSRP group 1? A.0c07.ac01 E.com 156 . 0000.www.0c07." .ac01 D.ac02 "Pass Any Exam. 4000. 4000.0000. 0000.0010 C.

com 157 .0010 as shown below: Topic 4. "Pass Any Exam. Any Time.Cisco 300-115 Exam F.0000.www. MixQUESTIONS QUESTION NO: 158 Refer to the exhibit.0c07.0010 Answer: B Explanation: Issuing the “show standby” command on either router shows us that the virtual MAC used by HSRP group 1 is4000." . 0000.actualtests.

com 158 .E Explanation: QUESTION NO: 160 RSPAN has been configured on a Cisco Catalyst switch. spanning-tree portfast bpduguard enable B.actualtests. no spanning-tree link-type shared Answer: C Explanation: QUESTION NO: 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. port number F." . spanning-tree portfast bpdufilter default D. hot-standby link identification number G. "Pass Any Exam. The RSPAN designated VLAN is missing the remote span command. Any Time. interface MAC address D.D.Cisco 300-115 Exam When troubleshooting a network problem. LACP system priority B. however.) A. LACP port priority C.www. Which type of misconfiguration is a cause? A. interface bandwidth Answer: A.B. traffic is not being replicated to the remote switch. system ID E. spanning-tree bpduguard default C. a network analyzer is connected to Port f0/1 of a LAN switch. Which command can prevent BPDU transmission on this port? A.

This port continues to reestablish until after eight failed retries.Cisco 300-115 Exam B. a Network Administrator noticed that one port stops receiving UDLD packets. UDLD timers are inconsistent. Any Time. RSTP D. C. UDLD is enabled globally. PVST+ C." . The local RSPAN switch is replicating only Rx traffic to the remote switch. B. D. RPVST+ E.actualtests. The local and remote RSPAN switches are configured using different session IDs.com 159 . STP Answer: A Explanation: "Pass Any Exam. D. The port then transitions into the errdisable state. Which option describes what causes the port to go into the errdisable state? A. Which version of spanning tree is appropriate to meet the company policy? A. Answer: A Explanation: QUESTION NO: 161 After UDLD is implemented. The local switch is overloaded with the amount of sourced traffic that must be replicated to the remote switch. Answer: B Explanation: QUESTION NO: 162 To follow the Layer 2 switching guidelines. C. UDLD port is configured in aggressive mode. Normal UDLD operations that prevent traffic loops. MST B. a network engineer decides to create a separate spanning tree for every group of 10 VLANs.www.

actualtests. C. BPDUignore D. Configure a SPAN session to monitor the received traffic on interface g0/4 only for VLAN 3. end user connectivity is still required. Answer: A Explanation: "Pass Any Exam. Configure a SPAN session to monitor the received traffic on interface g0/5 for all VLANs except VLAN 3. D. Configure a SPAN session to monitor the received traffic on interface g0/4 for all VLANs except VLAN 3." . BPDUguard E.com 160 . Which spanning-tree feature accomplishes this? A. however. Configure a SPAN session to monitor the received traffic on interface g0/5 only for VLAN 3. BPDUdisable Answer: B Explanation: QUESTION NO: 164 Refer to the exhibit. The engineer does not want this switch participating in Spanning Tree with the rest of the network.www.Cisco 300-115 Exam QUESTION NO: 163 A network engineer is installing a switch for temporary workers to connect to. BPDUfilter C. BPDUblock B. Any Time. What is the result of the SPAN configuration on a Cisco switch? A. B.