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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

switch# show spanning-tree brief D. Any Time. switch# show spanning-tree vlan 10 brief Answer: A Explanation: Command Description show spanning-tree Displays information about the spanning-tree state.f2d2. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 .www.com/library/content.informit." .9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 sec "Pass Any Exam. switch# show spanning-tree summary E.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.57d8.actualtests. switch# show spanning-tree bridge C.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.24 Switch-C(config-if-range)# sp–nning-tree portfast Reference:http://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.com 35 . switch# show spanning-tree vlan 10 B.

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

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

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

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

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

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

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

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

for example. port-duplex.com 44 . Capabilities TLV Describes the functional capability for the device in the form of a device type. Used by network operators to diagnose connectivity problems between adjacent network elements. Used by network operators to verify VTP domain configuration in adjacent network nodes. Full/Half Duplex TLV Indicates status (duplex configuration) of CDP broadcast interface. a switch. the assumed VLAN for untagged packets on the interface. per interface. This information is in the form of the interface protocol and port number. Table 21Type-Length-Value Definitions for CDPv2 TLV Definition Device-ID TLV Identifies the device name in the form of a character string. This feature is implemented only for interfaces that support the IEEE 802. Version TLV Contains information about the software release version on which the device is running." . VTP Management Domain TLV Advertises the system’s configured VTP management domain name-string. hardware platform. Platform TLV Describes the hardware platform name of the device.html QUESTION NO: 58 "Pass Any Exam. Eth 1/0. IP Network Prefix TLV Contains a list of network prefixes to which the sending device can forward IP packets.www. Address TLV Contains a list of network addresses of both receiving and sending devices. Port-ID TLV Identifies the port on which the CDP packet is sent. for example. CDP learns the native VLAN for an interface.cisco. memory errors Answer: A Explanation: Type-Length-Value fields (TLVs) are blocks of information embedded in CDP advertisements. Cisco 4500.1Q protocol. Table 21 summarizes the TLV definitions for CDP advertisements.Cisco 300-115 Exam D. Native VLAN TLV Indicates. for example. Any Time.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf015. Reference:http://www.actualtests.

Any Time.cisco. 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.actualtests.com/en/US/technologies/tk652/tk701/technologies_white_paper0900a ecd804cd46d.html "Pass Any Exam. C. B. D." . LLDP can discover only Windows servers. LLDP can discover up to two devices per port.Cisco 300-115 Exam Which option describes a limitation of LLDP? A. LLDP cannot provide information about VTP. LLDP does not support TLVs.www. 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.com 45 .

capabilities. D. Reference:http://www. Answer: A Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD.cisco. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity. When a unidirectional link is detected. 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. 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. capabilities. active and aggressive C.html QUESTION NO: 60 Which option lists the modes that are available for configuring UDLD on a Cisco switch? A.www. UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity.UDLD can operate in either normal or aggressive mode.cisco. normal and active D." . normal and aggressive B.Cisco 300-115 Exam QUESTION NO: 59 Which statement about the UDLD protocol is true? A.2SX/configuration/g "Pass Any Exam. Any Time.com/en/US/docs/switches/lan/catalyst6500/ios/12. Reference:http://www. UDLD detects the existence of unidirectional links.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/g uide/udld. and neighbors on a local area network.actualtests. C. When a unidirectional link is detected. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures. 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.com 46 . UDLD detects the existence of unidirectional links. normal and passive E. B.

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

cisco. 8-bit B. If converting from VTP version 3 to VTP version 2. VLANs in the range 1006 to 4094 are removed from VTP control. Extended VLANs are only supported in version 3 and not in versions 1 or 2.com/en/US/docs/switches/lan/catalyst6500/ios/12.1q frame? A.Cisco 300-115 Exam Explanation: CDP is enabled on your router by default. which means the Cisco IOS software will receive CDP information. 12-bit C. when a switch is configured to use VTP versions 1 or 2? A. server D. Reference:http://www. transparent B.com/en/US/docs/ios/12_2/configfun/command/reference/frf015.cisco. 16-bit D. To disable it globally.www.actualtests. client C. use the “no cdp run” command. Reference: http://www.ht ml QUESTION NO: 64 What is the size of the VLAN field inside an 802. Extended-range VLANs are supported only in VTP version 3.html#w p1017573 QUESTION NO: 63 Which VTP mode is needed to configure an extended VLAN. CDP also is enabled on supported interfaces by default." . Any Time. To disable CDP on aninterface. use the “no cdp enable interface” configuration command. 32-bit Answer: B Explanation: "Pass Any Exam. Answer: D Explanation: VTP version 1 and version 2 support VLANs 1 to 1000 only.com 48 .2SX/configuration/guide/vtp.

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

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

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

it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en.actualtests.1Q tag in an Ethernet frame 802. Any Time. VLANs 2-1001 D.1Q does not encapsulate the original frame.com 52 . Instead.1q header found? A. VLANs 1-1001 B. within the Ethernet header B. VLANs 2-4094 Answer: C Explanation: "Pass Any Exam." .wikipedia.org/wiki/IEEE_802. within the Ethernet source MAC address Answer: A Explanation: Frame format Insertion of 802.Cisco 300-115 Exam voice VLAN.www.cisco.1Q QUESTION NO: 69 Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a switch? A.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_22_ ea11x/configuration/guide/swvoip. within the Ethernet payload C. Reference:http://www. VLANs 1-4094 C. the Port Fast feature is not automatically disabled. for Ethernet frames.html QUESTION NO: 68 In which portion of the frame is the 802. within the Ethernet FCS D.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Cisco 300-115 Exam QUESTION NO: 90 Refer to the exhibit. the default is 32768. Answer: D Explanation: For priority. The bridge priority is 128.com 69 . D. it has the lowest priority value for VLAN 1. The lower the number. the range is 0 to 61440 in increments of 4096. the more likely the switch will be chosen as the root switch. The switch priority value is zero. "Pass Any Exam. The switch priority for VLAN 1 and the macro specifies“This Bridge is the root”. C. Any Time.actualtests.www." . B. The bridge priority is 1 and all ports are forwarding.19 and all ports are forwarding. Why would the switch be considered as a root bridge? A.

Cisco 300-115 Exam Reference:http://www. "Pass Any Exam. All ports are members of VLAN 10.1_9_e a1/configuration/guide/swstp. which represents the best path to the Root Bridge.cisco. which option will be the new root port for VLAN 10? A.com/en/US/docs/switches/lan/catalyst2950/software/release/12. Considering the default cost of upstream bridges to the root bridge is equal.www.com 70 . 1sername1e f0/21 Answer: D Explanation: Root Port election on each bridge Each (non-Root) bridge has exactly one Root Port. interface f0/13 B. interface f0/15 D." . interface f0/14 C.html#wp1020666 QUESTION NO: 91 Refer to the exhibit.actualtests. Any Time.

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

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

cisco. Any Time. •The DHD system priority must be lower (higher numerically) than the PoA system priority." .Cisco 300-115 Exam 6b. •mLACP does not support half-duplex links. 6 C. B. •No more than 100 VLANs can be active on a switch configured as a PoA. It does not support 1Gb links. •VSS mode does not support the mLACP for server access feature. D. follow these guidelines and restrictions: •PFC3A mode does not support the mLACP for server access feature. C.www. •mLACP does not support multiple neighbors.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/g uide/mlacp_server_support. 12 Answer: C Explanation: The VSS is made up of the following: "Pass Any Exam. Answer: C Explanation: When configuring mLACP for Server Access. Converting a port channel to mLACP can cause a service disruption. Reference:http://www.actualtests.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. It is not available in VSS.com 73 . 8 D. 4 B.shtml QUESTION NO: 95 Which statement about restrictions for multichassis LACP is true? A. It is available only on a Cisco Catalyst 6500 Series chassis. •Converting a port channel to mLACP can cause a service disruption.

and both virtual switch members continue to forward traffic independently. Any Time.com 74 .html QUESTION NO: 97 Which statement describes what happens if all VSL connections between the virtual switch members are lost? A. Answer: D Explanation: Q. What happens if all VSL connections between the virtual switch members are lost? A. and only the new active virtual switch continues to forward traffic. Both virtual switch members cease to forward traffic. The dual active state is detected rapidly (subsecond) by any of the following three methods: • Enhancement to PagP used in MEC with connecting Cisco switches • L3 Bidirectional Forwarding Detection (BFD) configuration on a directly connected link (besides VSL) between virtual switch members or through an L2 link through an access layer switch • L2 Fast-Hello Dual-Active Detection configuration on a directly connected link (besides VSL) between virtual switch members (supported with 12.2(33)SXI) In the dual active recovery mode. The VSS transitions to the dual active recovery mode. Reference:http://www. The VSS transitions to the dual active recovery mode. the VSS will transition to the dual active recovery mode.www. If for some rare reason all VSL connections are lost between the virtual switch members leaving both the virtual switch members up.cisco.cisco. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member.actualtests.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aec d806ed74b. B. Reference:http://www.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.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aec d806ed74b. D." . 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.html "Pass Any Exam. C. The virtual switch members reload. The new active virtual switch continues to forward traffic on all links.

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

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

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." .com 79 .21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 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.actualtests.

which has a partial configuration and has been attached to RouterC as shown in the topology diagram. Routed interfaces should use the lowest host on a subnet when possible.actualtests.200.250.250.Cisco 300-115 Exam no ip address shutdown ! ip default-gateway 192. The following subnets are available to implement this solution: – 10. changes VLAN port assignments or create trunks. SwitchC uses Cisco as the enable password. Note: Due to administrative restrictions and requirements you should not add or delete VLANs.64/27 Hosts H1 and H2 are configured with the correct IP address and default gateway. Due to administrative restrictions and requirements you should not add/delete vlans or create trunk links. "Pass Any Exam.32/27 – 190.com 80 . No trunking has been configured on RouterC. Any Time.1. Company policies forbid the use of static or default routing.200.168. Company policies forbid the use of static or default routing. You need to configure SwitchC so that Hosts H1 and H2 can successfully ping the server S1. All routes must be learned via the EIGRP routing protocol. Routing must only be enabled for the specific subnets shown in the diagram. RouterC is correctly configured. All routes must be learned via EIGRP 65010 routing protocol. Also SwitchC needs to be able to ping server S1.10." . You do not have access to RouteC.1 ! ! End QUESTION NO: 100 CORRECT TEXT You have been tasked with configuring multilayer SwitchC.www.10.0/24 – 190.

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

actualtests. + Only use SwitchC for interVLAN routing without using RouterC. 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.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. No trunking requires.www." . Any Time. SwitchC should be configured as a Layer 3 switch (which supports ip routing function as a router).com 82 .

200. We should check the default gateways on H1 & H2. SwitchC(config-if)# ip address 10.255.224 SwitchC(config-if)# no shutdown SwitchC(config-if)# int vlan 3 SwitchC(config-if)# ip address 190.0.www.200.0.200. Answer: \>ipconfig We will get the default gateways as follows: Host1: + Default gateway: 190.0.10.255.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED.250.200.10.250.33 Host2: + Default gateway: 190.200.65 Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10.33 255.0/16 is not used anywhere else in this topology.0.200. 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.200.32 0.255. SwitchC# configure terminal SwitchC(config)# int gi0/1 SwitchC(config-if)#no switchport -> without using this command. Click on H1 and H2 and type the “ipconfig” command to get their default gateways. gi0/11 interfaces were configured as access ports so we don’t need to configure them in this sim. and from the PCs as well. in fact it is not necessary because the network 190. so you will not miss within it in the exam. SwitchC(config-if)# no shutdown SwitchC(config-if)# exit SwitchC(config)# int vlan 2 SwitchC(config-if)# ip address 190.10." .10.250.Cisco 300-115 Exam switch with SVIs for interVLAN routing.0 ->RouterC has used IP 10.com 83 .255 SwitchC(config-router)# network 190. Any Time.0.1 so this is the lowest usable IP address.2 255. In order to complete the lab.10.65 255.255.250.0.0 0. If you use wrong AS number.255. also don’t modify/delete any port just do the above configuration.0. no neighbor "Pass Any Exam.255. Also some reports said the “no auto-summary” command can’t be used in the simulator.31 SwitchC(config-router)# network 190.250.actualtests.250.10. the simulator does not let you assign IP address on Gi0/1 interface.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. you should expect the ping to SERVER to succeed from the MLS.64 0.

0. we can use “show run” command to verify.0.200.250.64 0. QUESTION NO: 101 You have been asked to install and configure a new switch in a customer network.31 and “network 190.0.200. In fact.32 0.0. just for sure." . Any Time. "Pass Any Exam.www. only the summarized network 190.0.200. even without “no auto-summary” command the network still works correctly.actualtests.0. we are pretty sure instead of using two commands “network 190.0 because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised.200. Use the console access to the existing and new switches to configure and verify correct device configuration.com 84 .250.Cisco 300-115 Exam relationship is formed between RouterC and SwitchC.31 we can use one simple command “network 190. But after finishing the configuration. But in the exam the sim is just a flash based simulator so we should use two above commands.0 is shown.

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

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

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

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

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

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

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

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

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

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

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

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

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

com 101 . It intercepts. Disable DHCP snooping information option.www. (config)# aaa authentication login default radius local B. D. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify macaddress command. (config)# aaa authentication login default local radius D. Trust the interface that is connected to the server with the ip dhcp snooping trust command. Which solution ensures that the server maintains network reachability in the future? A. It also lists radius first then local. logs. 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. B." . This capability protects the network from certain man-in-the-middle attacks. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable. 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. C. and discards ARP packets with invalid IP-to-MAC address bindings. Any Time. (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. Configure a static DHCP snooping binding entry on the switch.actualtests. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. Answer: B Explanation: Dynamic ARP inspection is a security feature that validates ARP packets in a network. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed.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. For more protection against malicious attacks.

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

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

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

the broadcast keyword was used so only broadcast traffic is limited. If you do not configure a falling suppression level. F. The range is 0. storm control is disabled. the network team has been overwhelmed with port reset requests. E.) A.cisco.00. This value must be less than or equal to the rising suppression value. The port blocks traffic when the rising threshold is reached." .actualtests. specify the rising threshold level for broadcast. D. • (Optional) For level-low.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.com 105 . The switch resumes forwarding broadcasts when they are below 65% of bandwidth. In this case. The keywords have these meanings: • For level. Only broadcast traffic is limited by this particular storm control configuration. Which command accomplishes this task? "Pass Any Exam. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. Reference:http://www. They decide to configure the network to automate the process of re-enabling user ports. The switch drops broadcasts when they reach 75% of bandwidth. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth.www. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth.00 to 100.F Explanation: storm-control{broadcast|multicast|unicast}level{level[level-low] |ppspps[pps-low]} Configure broadcast.00 to 100.00. multicast. The range is 0. 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. By default. B. Any Time. C.html QUESTION NO: 114 After port security is deployed throughout an enterprise campus.D. In which three ways does this command impact the traffic? (Choose three. it is set to the rising suppression level. or unicast traffic as a percentage (up to two decimalplaces) of the bandwidth. multicast. Answer: C.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/122_25_see/configuration/guide/3550SCG/swtrafc. or unicast storm control.

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

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

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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Cisco 300-115 Exam
•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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Cisco 300-115 Exam

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

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

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

community VLAN D. and the traffic from each isolated port also remains completely separate. •Community—A community port is a host port that belongs to a community secondary VLAN. •Isolated VLAN —An isolated VLAN is a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports." . 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. This port has complete isolation from other ports within the same private VLAN domain. Traffic received from an isolated port is forwarded only to promiscuous ports.actualtests.www. Each port is completely isolated from all other ports in the isolated VLAN. Private VLANs block all traffic to isolatedports except traffic from promiscuous ports. but these ports cannot communicate with ports in any other "Pass Any Exam. Each isolated VLAN can have several isolated ports. These interfaces are isolated from all other interfaces in other communities and from all isolated ports within the private VLAN domain. The ports within one community can communicate.You can configure multiple isolated VLANs in a private VLAN domain. and to other promiscuous ports. promiscuous VLAN Answer: A Explanation: Understanding Primary. Any Time. •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. primary VLAN C. You can configure multiple community VLANs in a private VLAN domain. Isolated. all the traffic remains isolated within each one.Cisco 300-115 Exam •Isolated—An isolated port is a host port that belongs to an isolated secondary VLAN. Community ports communicate with other ports in the same community VLAN and with associated promiscuous ports. Reference:http://www.com 114 . except that it can communicate with associated promiscuous ports. isolated VLAN B. You can have more than one isolated port in a specified isolated VLAN.cisco. both isolated and community.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/ guide/cli/CLIConfigurationGuide/PrivateVLANs.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.

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

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

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

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

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

com 120 .wikipedia. • Packets from devices in any other address range should be dropped on VLAN 20. You must use the available IOS switch features.40. The topology diagram indicates their layer 2 mapping.actualtests. access port Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. • Filtering should be implemented as close to the serverfarm as possible.120.120. "Pass Any Exam.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches. Reference: http://en.46 • Radius key: rad123 • Authentication should be implemented as close to the host as possible. 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. You have been tasked with implementing the above access control as a pre-condition to installing the servers. VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server. Any Time. promiscuous port B.Cisco 300-115 Exam A." . 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. community port D. • Packets from devices in the subnet of 172. • Devices on VLAN 20 are restricted to the subnet of 172.40. Authentication is to be done via a Radius server: • Radius server host: 172.0/24 should be allowed on VLAN 20.www. For security reasons.org/wiki/Private_VLAN QUESTION NO: 136 CORRECT TEXT SWITCH.120. DSW1 and ASW1. Corporate polices do not allow layer 3 functionality to be enabled on the switches.40. isolated port C.0/24.

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

com 122 ." .40.0.120. Any Time.0 0.www.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 172.0.255 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.120.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 172.39.actualtests.

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

com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_19_ ea1/configuration/guide/swhsrp.cisco. the default is 0 (no delay before taking over).com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes. 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. provides two independent supervisors with two different control planes D. Use thenoform of the command to restore the default values. VSS eliminates the need for FHRP at the aggregation layer of the data center.www." .actualtests. reduces cost B.com 124 . • (Optional)delay—Set to cause the local router to postpone taking over the active role for the shown number of seconds. simplifies configuration C. The VSS IP route is highly available due to MEC and the resiliency of the VSS system.cisco.Cisco 300-115 Exam (Optional)group-number—The group number to which the command applies. Reference:http://www. The VSS system creates a single logical router at Layer 3. • (Optional)preempt—Select so that when the local router has a higher priority than the active router. GLBP B. Any Time.html#wp1044327 QUESTION NO: 139 Which option is a benefit of using VSS? A. Reference:http://www. it assumes control as the active router. The range is 0 to 36000 (1 hour). HSRP "Pass Any Exam.ht ml QUESTION NO: 140 Which First Hop Redundancy Protocol is an IEEE Standard? A. This VSS routing instance fulfills this first-hop role without the need for a dedicated protocol.

up to 4 AVF routers on the group (Active Virtual Forwarder) passing traffic. .Use virtual ip address. Any Time..Can use real router ip address.1 master router.Use virtual ip address.Cisco 300-115 Exam C..up to 1024 virtual routers (GLBP groups) per physical interface.1 or more listening routers. the one with highest priority become master. VRRP D. . if not. 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 ...1 AVG (Active Virtual Gateway)." . .1 or more backup routers.1 standby router. 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 ..www. .1 active router.actualtests. .

0.Round-Robin algorithm (default).0.0. 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. Load-balancing oriented.Multiple VRRP group per interface/SVI/routed int. Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing.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.www.Host-dependent algorithm.0. Any Time.2 – udp 1985 (version1)224.0.actualtests.0.Multiple HSRP group per interface/SVI/routed int.18 – IP 112 224.Cisco 300-115 Exam yes yes yes Traffic type 224.(generally through DHCP) Clients are transparently updated with virtual MAC according to load-balancing algorithm through ARP requesting a unique virtual gateway..com 126 ." .Weighted algorithm.0.wordpress. .102-udp 1985 (version2) 224.(generally through DHCP) Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing.

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

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

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

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

actualtests.shtml#dr QUESTION NO: 148 Ferris Plastics. Troubleshooting has identified several issues. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.255. Unavailable GLBP active forwarder B. Verify the spanning-tree topology and check if there is any layer2 loop. The distribution switches are configured to use HSRP to provide a high availability solution. then some other device with a MAC address reports this error message. Reference:http://www. Currently all interfaces are up.102 and User Datagram Protocol (UDP) port 3222 (source and destination). permit the Multicast address by permit 224. "Pass Any Exam.Cisco 300-115 Exam A.255. When configuring the multicast boundary command. %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.0. Using the running configurations and show commands. Any Time. In order to resolve this issue. HSRP configured on same interface as GLBP D.0. If the interface MAC address is different from the one reported in the error message.cisco.0." . you have been asked to investigate and respond to the following question.0. then it indicates that this router is receiving its own hello packets sent. is a medium sized company. • 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.www. Inc.com 131 . issue the show interface command to verify the MAC address of the interface.com/en/US/products/hw/switches/ps708/products_configuration_exam ple09186a00807d2520. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.0 15. Incorrect GLBP IP address C.255. unless GigabitEthernet1/0/1 on backup device has also failed. with an enterprise network (access.

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

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

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

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

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

• 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." . Using the running configurations and show commands. Any Time. The distribution switches are configured to use HSRP to provide a high availability solution.actualtests. is a medium sized company. Currently all interfaces are up. Inc.www. "Pass Any Exam.com 139 . you have been asked to investigate and respond to the following question. unless GigabitEthernet1/0/1 on backup device has also failed. Troubleshooting has identified several issues. with an enterprise network (access. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.

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

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

• 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. is a medium sized company. Troubleshooting has identified several issues. The distribution switches are configured to use HSRP to provide a high availability solution. you have been asked to investigate and respond to the following question.actualtests. "Pass Any Exam. Inc.Cisco 300-115 Exam QUESTION NO: 152 Ferris Plastics. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. with an enterprise network (access. Any Time. Using the running configurations and show commands. Currently all interfaces are up.com 142 .www.

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

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

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

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

Any Time. "Pass Any Exam.com 147 .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." . They have questions about how these two devices will perform in the event of a device failure.actualtests.www.

R1-50 %.0/24 subnet is being forwarded through R1? A. R2-100% D.16.actualtests. R1-0% B. R1-100% "Pass Any Exam.com 148 . R2-50% C.www.10. Any Time.Cisco 300-115 Exam What percentage of the outgoing traffic from the 172." .

www. "Pass Any Exam.com 149 .actualtests." .Cisco 300-115 Exam Answer: D Explanation: Based on the following output. we see that R1 is the active standby router for the Ethernet 0/0 link. so all outgoing traffic will be forwarded to R1. Any Time. 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. They have questions about how these two devices will perform in the event of a device failure.

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

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

the standby 1 track decrement command will lower the priority from 130 to 90.Cisco 300-115 Exam Here." . 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.com 152 .www. when the Ethernet 0/0 interface goes down. However. They have questions about how these two devices will perform in the event of a device failure. Any Time. "Pass Any Exam.actualtests. it will then increment it by 40 back to 130 for HSRP group 1. when it comes back up.

Any Time. The HSRP group authentication is misconfigured C.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.www. The HSRP group number mismatch B.com 153 ." .actualtests. The HSRP Hello packets are blocked D.

we see that authentication is configured on R2.Cisco 300-115 Exam E.actualtests. "Pass Any Exam." . Any Time.com 154 . The HSRP group priorities are different Answer: B Explanation: Based on the configuration output.www. 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 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.www." .actualtests. They have questions about how these two devices will perform in the event of a device failure.com 155 . Any Time.

0000.Cisco 300-115 Exam What is the virtual mac-address of HSRP group 1? A.com 156 .ac01 E.ac01 D." . 4000.0c07.0c07. 0000.www.0000.ac02 B. 4000. Any Time.ac02 "Pass Any Exam.actualtests. 4000.0000.0000.0010 C.

Cisco 300-115 Exam F.0010 Answer: B Explanation: Issuing the “show standby” command on either router shows us that the virtual MAC used by HSRP group 1 is4000." .0c07.com 157 . "Pass Any Exam.actualtests. 0000.0000.www.0010 as shown below: Topic 4. MixQUESTIONS QUESTION NO: 158 Refer to the exhibit. Any Time.

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

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

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