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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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2

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

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

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

in which the interface starts negotiations with other interfaces by sending PAgP packets.cisco. but does not start LACP packet negotiation. This setting minimizes the transmission ofPAgP packets.html "Pass Any Exam.com 7 . for Layer 2 EtherChannels. a usable EtherChannel exists onlywhen an interface group in theonmode is connected to another interface group in theonmode. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/121_13_ea1/configuration/guide/3550scg/swethchl. Both the auto and desirable PAgP modes allow interfaces to negotiate with partner interfaces todetermine if they can form an EtherChannel based on criteria such as interface speed and. An interface in the auto mode cannot form an EtherChannel with another interface that is also in the auto mode because neither interface starts PAgP negotiation.actualtests. This setting minimizes the transmission of LACP packets. in which the interface starts negotiations with other interfaces by sending LACP packets. Any Time. passive Places an interface into a passive negotiating state. in which the interface responds to PAgP packets it receives but does not start PAgP packet negotiation. in which the interface responds to LACP packets that it receives. For example: •Aninterface in the desirable mode can form an EtherChannel with another interface that is in the desirable or auto mode. on Forces the interface into an EtherChannel without PAgP or LACP. •An interface in the auto mode can form an EtherChannel with another interface in the desirable mode.www. 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." . Interfaces can form an EtherChannel when they are in different PAgP modes as long as the modes are compatible. trunking state and VLAN numbers. auto Places an interface into a passive negotiating state. With theonmode. desirable Places an interface into an active 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.

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

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

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

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

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

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

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

com/en/US/docs/switches/lan/catalyst6500/ios/15.1SY/config_guide/s up2T/vtp. Answer: A Explanation: VTP transparent switches do not participate in VTP. B. The VTP revision number of the Switch B is higher than that of Switch A. What is the most probable cause of this behavior? A. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements.cisco.www.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c 52.cisco. but Switch B does not receive any VLAN information.Cisco 300-115 Exam VLANs (VLAN numbers 1006 to 4094). and C are trunked together and have been properly configured for VTP. while Switch C is configured with a trunk port to Switch B. C.com 15 . Switch A. You must configure extended-range VLANs manually on each network device. • VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094).pdf QUESTION NO: 14 Refer to the exhibit. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2.actualtests. Any Time." . The trunk between Switch A and Switch B is misconfigured. B. Switch C receives VLAN information from the VTP server Switch A. Reference:http://www. Switch B is configured with an access port to Switch A. Reference:http://www. Switch B is configured in transparent mode. the VLANs in the range 1006 to 4094 are removed from VTP control. D. If you convert from VTP version 3 to VTP version 2.shtml "Pass Any Exam.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

24 Switch-C(config-if-range)# sp–nning-tree portfast Reference:http://www. switch# show spanning-tree vlan 10 brief Answer: A Explanation: Command Description show spanning-tree Displays information about the spanning-tree state.Cisco 300-115 Exam STP blocking mode.com 35 . switch# show spanning-tree bridge C. switch# show spanning-tree brief D. Any Time.informit. 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.57d8.9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 sec "Pass Any Exam. switch# show spanning-tree vlan 10 B.actualtests. Example output: SW2#show spanning-tree vlan 10 VLAN0010 Spanning tree enabled protocol rstp Root ID Priority 24586 Address 0014.com/library/content.www." .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. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 .f2d2.

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

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

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

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

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

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

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

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

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

LLDP can discover only Windows servers. C. D. Any Time. 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.com/en/US/technologies/tk652/tk701/technologies_white_paper0900a ecd804cd46d.html "Pass Any Exam. LLDP can discover up to two devices per port. where the connection may be unidirectional No Port UniDirectional Mode TLV Management address Management Address TLV Management-AddressTLV Allows for organizational unique TLVs Yes No Reference:http://www. LLDP cannot provide information about VTP.Cisco 300-115 Exam Which option describes a limitation of LLDP? A." . B. LLDP does not support TLVs.com 45 .cisco.actualtests.www.

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

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

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

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

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

actualtests. •The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). portfast B. spanning tree D." . Any Time. Exhibit D Answer: A Explanation: In this case. the port has been configured both as a trunk and as a switchport in data vlan 10. Obviously.com 51 . so even though Cisco IOS will accept both. the port will actually be used as a trunk. Exhibit B C. Exhibit C D. Exhibit A B.Cisco 300-115 Exam A.www. When you disable "Pass Any Exam. a port can not be both. but not automatically disabled when a voice VLAN is removed? A. ignoring the switchport access VLAN 10 command. •The Port Fast feature is automatically enabled when voice VLAN is configured. 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. port-security C.

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

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

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

" . Which action resolves this problem? A.dat and ensure that the switch with lowest MAC address is the VTP server. 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.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. Any Time.actualtests. Manually force trunking with switchport mode trunk on both switches. Delete vlan. B.com 55 . but users in company A are not able to access network resources in company B when DTP is enabled. Enable the company B switch with the vtp mode server command. C. Disable DTP and document the VTP domain mismatch.www. 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. Cisco Discovery Protocol version 2 carries native VLAN information. Link Aggregation Protocol at the access layer C. 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. D. "Pass Any Exam. If you have a native VLAN mismatch. Cisco Discovery Protocol version 3 carries native VLAN information. B. Of these. Any Time. Consider that this is a multivendor environment. 802. dot1q VLAN trunking D.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. but version 1 does not. PPP encapsulation with a virtual template B. but version 2 does not. There are 2 different methods for trunking. Cisco Discovery Protocol version 1 carries native VLAN information. QUESTION NO: 74 Which statement about using native VLANs to carry untagged frames is true? A. only 802.1Q and ISL. Which Cisco IOS switching feature can be used to achieve the task? A. C. Answer: A Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches.www. but versions 1 and 2 do not.com 56 ." . you will see CDP error messages on the console output. 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. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information.actualtests.Cisco 300-115 Exam are both VTP servers so there are no issues there.

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

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

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

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

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

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

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

Answer: A Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel.cisco. Any Time. All interfaces in each EtherChannel must be the same speed. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. such as a router. and all must be configured as either Layer 2 or Layer 3 interfaces. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. 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. Reference:http://www.actualtests. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel.cisco.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 8 Gbps only for Gigabit EtherChannel. B.Cisco 300-115 Exam PAgP set to on if a device on one side ofthe channel does not support PAgP. C.com 64 . The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 16 Gbps only for Gigabit EtherChannel.www. Reference: http://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." . 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.

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

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

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

Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports.html#wp1105354 "Pass Any Exam. configurable in increments of 16. B.actualtests. A lower path cost represents higher-speed transmission and is preferred. If all LAN ports have the same priority value.1_9_e a1/configuration/guide/swstp.cisco. Any Time. Reference:http://www. D." . Which action is needed to modify the Layer 2 spanning-tree network so that traffic for PC1 VLAN from switch SW3 uses switchport f1/1 as a primary port? A. Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. The possible priority range is 0 through 240 (default 128). Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16. Answer: C Explanation: If a loop occurs.com/en/US/docs/switches/lan/catalyst2950/software/release/12. 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. STP considers port priority when selecting a LAN port to put into the forwarding state.Cisco 300-115 Exam f1/0 and f1/1 have the same end-to-end path cost to the designated bridge.com 68 .www. C.

Any Time. D. the default is 32768." . the range is 0 to 61440 in increments of 4096.com 69 . it has the lowest priority value for VLAN 1.19 and all ports are forwarding. The bridge priority is 1 and all ports are forwarding. The lower the number.www.actualtests. "Pass Any Exam. The bridge priority is 128. C.Cisco 300-115 Exam QUESTION NO: 90 Refer to the exhibit. Answer: D Explanation: For priority. The switch priority value is zero. the more likely the switch will be chosen as the root switch. Why would the switch be considered as a root bridge? A. B. The switch priority for VLAN 1 and the macro specifies“This Bridge is the root”.

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

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

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

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

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

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

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.

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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
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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

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78

actualtests.21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1." . Any Time.Cisco 300-115 Exam SWITCH_B(config)# hostname SWITCH_A ! panning-tree vlan 11 root primary spanning-tree vlan 12 root primary spanning-tree vlan 13 root primary spanning-tree vlan 21 root primary spanning-tree vlan 22 root primary spanning-tree vlan 23 root primary ! interface FastEthernet0/3 switchport trunk allowed vlan 1.21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/21 switchport access vlan 21 switchport mode access ! interface FastEthernet0/22 switchport access vlan 22 switchport mode access ! interface FastEthernet0/23 switchport access vlan 23 switchport mode access ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 ! interface Vlan1 "Pass Any Exam.www.com 79 .

All routes must be learned via EIGRP 65010 routing protocol. Routing must only be enabled for the specific subnets shown in the diagram.1.com 80 .www. You do not have access to RouteC. No trunking has been configured on RouterC.actualtests.250. You need to configure SwitchC so that Hosts H1 and H2 can successfully ping the server S1.250. "Pass Any Exam.10. which has a partial configuration and has been attached to RouterC as shown in the topology diagram. Due to administrative restrictions and requirements you should not add/delete vlans or create trunk links. All routes must be learned via the EIGRP routing protocol. Company policies forbid the use of static or default routing. RouterC is correctly configured.200.10. Company policies forbid the use of static or default routing.0/24 – 190. Any Time." .1 ! ! End QUESTION NO: 100 CORRECT TEXT You have been tasked with configuring multilayer SwitchC. Routed interfaces should use the lowest host on a subnet when possible. Note: Due to administrative restrictions and requirements you should not add or delete VLANs. Also SwitchC needs to be able to ping server S1. changes VLAN port assignments or create trunks.168. The following subnets are available to implement this solution: – 10.32/27 – 190.Cisco 300-115 Exam no ip address shutdown ! ip default-gateway 192.200.64/27 Hosts H1 and H2 are configured with the correct IP address and default gateway. SwitchC uses Cisco as the enable password.

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

250.255.0." .255.33 Host2: + Default gateway: 190.0.224 SwitchC(config-if)# no shutdown SwitchC(config-if)# int vlan 3 SwitchC(config-if)# ip address 190.250.0. We should check the default gateways on H1 & H2. no neighbor "Pass Any Exam. In order to complete the lab.64 0. so you will not miss within it in the exam. Any Time.1 so this is the lowest usable IP address.255 SwitchC(config-router)# network 190.33 255. Also make sure you use the correct EIGRP AS number (in the configuration above it is 650 but it will change when you take the exam) but we are not allowed to access RouterC so the only way to find out the EIGRP AS is to look at the exhibit above. Also some reports said the “no auto-summary” command can’t be used in the simulator.www.0.200.32 0.200.0 ->RouterC has used IP 10.200.250.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED.0.200.65 255.10. SwitchC# configure terminal SwitchC(config)# int gi0/1 SwitchC(config-if)#no switchport -> without using this command.com 83 .0.10.255. If you use wrong AS number.0.65 Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10.10.0/16 is not used anywhere else in this topology.250. gi0/11 interfaces were configured as access ports so we don’t need to configure them in this sim. the simulator does not let you assign IP address on Gi0/1 interface.10.0 0. SwitchC(config-if)# no shutdown SwitchC(config-if)# exit SwitchC(config)# int vlan 2 SwitchC(config-if)# ip address 190.200.10. Answer: \>ipconfig We will get the default gateways as follows: Host1: + Default gateway: 190. in fact it is not necessary because the network 190.200.Cisco 300-115 Exam switch with SVIs for interVLAN routing.2 255.255. and from the PCs as well.250.10.224 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.31 SwitchC(config-router)# network 190. also don’t modify/delete any port just do the above configuration.actualtests. SwitchC(config-if)# ip address 10.255.250.200. Click on H1 and H2 and type the “ipconfig” command to get their default gateways.255.

Use the console access to the existing and new switches to configure and verify correct device configuration.0.0. "Pass Any Exam.250. In fact. But after finishing the configuration. But in the exam the sim is just a flash based simulator so we should use two above commands. QUESTION NO: 101 You have been asked to install and configure a new switch in a customer network.200.32 0. we can use “show run” command to verify. even without “no auto-summary” command the network still works correctly. just for sure.250.31 we can use one simple command “network 190.www.0.200.actualtests. only the summarized network 190.com 84 .Cisco 300-115 Exam relationship is formed between RouterC and SwitchC.0. Any Time.200.0 because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised.0." .64 0.0.31 and “network 190.200. we are pretty sure instead of using two commands “network 190.0 is shown.

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

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

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

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

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

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

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

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

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

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

SW2. "Pass Any Exam. and SW4 we see that both SW1 and SW2 are operating in VTP server mode. but SW4 is a client.Cisco 300-115 Exam E. configure vtp mode as off and configure VLAN 500 and VLAN 600. configure back to vtp server mode.com 95 . Answer: A Explanation: By issuing the “show vtp status command on SW2." .actualtests. On SW2. Any Time.www. 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 New_Switch and SW4 only. You are required to configure private VLANs for a new server deployment connecting to the SW4 switch. SW4 and New_Switch E. Which of the following configuration steps will allow creating private VLANs? A. Answer: C Explanation: To create private VLANs. Disable VTP pruning on SW2. What is the solution to avoid the snooping database from being rebuilt after every "Pass Any Exam. Disable VTP pruning on SW4 only D. Topic 2.com 99 . In this case. Infrastructure Security QUESTION NO: 105 A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database. Disable VTP pruning on SW1 only B.actualtests." . only SW4 will connect to servers in a private VLAN. Any Time. Disable VTP pruning on SW2 only C.www. you will need to only disable pruning on the switch that contains the private VLANs.Cisco 300-115 Exam Examine the VTP configuration.

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

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

Configure VTP Transparent Mode. Reference:http://www.com 102 . Ensure all switches are configured as VTP server mode. Enable VTP version 3. the DHCP snooping binding database.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. Which configuration must be made before the private VLAN is configured? A. The interface that is connected to the workstation in question will be put into the errdisabled "Pass Any Exam.www.com/articles/article. the switch forwards the packet without any checks. Private VLANs are configured in the context of a single switch and cannot have members on other switches. On untrusted interfaces. configure a static DHCP snooping binding entry on the switch. Any Time. C. To ensure network reachability to the server. If the ARP packet is received on a trusted interface. The IP address of one of the workstations does not match any entries found in the DHCP binding database. Reference:http://www. B. D.actualtests.ciscopress. Disable VTP and manually assign VLANs. Packets from the workstation will be rate limited according to the default values set on the switch. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/122_55_se/configuration/guide/scg3750/swdynarp. Which statement describes the outcome of this scenario? A.Cisco 300-115 Exam updating the local ARP cache or before forwarding the packet to the appropriate destination. Answer: C Explanation: You must configure VTP to transparent mode before you can create a private VLAN. Private VLANs also carry TLVs that are not known to all types of Cisco switches. B. the switch forwards the packet only if it is valid.cisco. •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.

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

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

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

switch# show ip arp inspection E.E Explanation: These two commands will show the MAC address table. Any Time. switch# show ip verify source D. Reference:http://www. switch# show port-security C. 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. Which two commands help trace this PC when the MAC address is known? (Choose two. switch# show mac address-table address <mac address> Answer: A. 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. If a port is in per-VLAN errdisable mode.Cisco 300-115 Exam A. switch# show mac address-table B.www. you can bring it out of this state automatically by configuring the errdisable recovery cause psecure-violation global configuration command or you can manually reenable it by entering the shutdown and no shut down interface configuration commands.cisco. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state. switch(config)# errdisable recovery interval 180 B." .actualtests. 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. This is the default mode. switch(config)# errdisable recovery cause psecure-violation C.com/c/en/us/td/docs/switches/lan/catalyst4500/122/53SG/configuration/config/port_sec. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port.com 106 .) A. including the switch port that the particular host is using. switch(config)# switchport port-security aging type inactivity E.

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

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

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

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

QUESTION NO: 119
Which authentication service is needed to configure 802.1x?
A. RADIUS with EAP Extension
B. TACACS+
C. RADIUS with CoA
D. RADIUS using VSA
Answer: A
Explanation: lanation:
With 802.1x, the authentication server—performs the actual authentication of the client. The
authentication server validates the identity of the client and notifies the switch whether or not the
client is authorized to access the LAN and switch services. Because the switch acts as the
proxy,the authentication service is transparent to the client.The Remote Authentication Dial-In
User Service (RADIUS) security system with Extensible Authentication Protocol (EAP)
extensions is the only supported authentication server.
Reference:http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2940/software/release/121_19_ea1/configuration/guide/2940scg_1/sw8021x.pdf

QUESTION NO: 120
Refer to the exhibit.

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

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. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/snoodhcp. • Rate-limits DHCP traffic from trusted and untrusted sources.www. the DHCP snooping binding database. the switch forwards the packet only if it is valid.pdf QUESTION NO: 123 Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A. If the ARP packet is received on a trusted interface.html QUESTION NO: 124 Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. • Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts. Reference:http://www. storm control C. On untrusted interfaces.com/c/en/us/support/docs/switches/catalyst-3750-seriesswitches/72846-layer2-secftrs-catl3fixed. ip dhcp snooping trust "Pass Any Exam. which contains information about untrusted hosts with leased IP addresses. • Builds and maintains the DHCP snooping binding database. VTP pruning D.Cisco 300-115 Exam DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. 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.actualtests.com 112 . This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Any Time." .cisco.cisco. Dynamic ARP Inspection B.

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

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

actualtests.Cisco 300-115 Exam community or isolated VLAN in the private VLAN. DHCP snooping database B. Reference:http://www.com 115 . 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. dynamic ARP database C. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database. Any Time." .cisco.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. dynamic routing database D. storm control "Pass Any Exam. • Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet.html QUESTION NO: 128 When IP Source Guard with source IP filtering is enabled on an interface.com/c/en/us/td/docs/switches/datacenter/nexus1000/hyperv/sw/5_2_1 _s_m_1_5_2/troubleshooting/configuration/guide/n1000v_troubleshooting/n1000v_trouble_19dhcp . which feature must be enabled on the access VLAN for that interface? A. It may also contain static entries that you have created. DHCP snooping B.www.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/ guide/cli/CLIConfigurationGuide/PrivateVLANs.cisco. • Drops invalid ARP packets. Reference:http://www.This database is built by DHCP snooping when it is enabled on the VLANs and on the device.

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

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

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

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

promiscuous port B.org/wiki/Private_VLAN QUESTION NO: 136 CORRECT TEXT SWITCH. You must use the available IOS switch features. • Filtering should be implemented as close to the serverfarm as possible.wikipedia. isolated port C.40. 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. access port Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. • Packets from devices in the subnet of 172.40. Host port further divides in two types – Isolated port (I-Port) and Community port (C-port).0/24 should be allowed on VLAN 20. Corporate polices do not allow layer 3 functionality to be enabled on the switches.46 • Radius key: rad123 • Authentication should be implemented as close to the host as possible.120. Any Time.0/24." . "Pass Any Exam. Authentication is to be done via a Radius server: • Radius server host: 172.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches.actualtests. • Devices on VLAN 20 are restricted to the subnet of 172. You have been tasked with implementing the above access control as a pre-condition to installing the servers. The topology diagram indicates their layer 2 mapping.120. DSW1 and ASW1. Reference: http://en.40. • Packets from devices in any other address range should be dropped on VLAN 20.120. The Radius server and application servers will be installed at a future date. community port D.com 120 .www. For security reasons.Cisco 300-115 Exam A. VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server.

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

0.Cisco 300-115 Exam Answer: The configuration: Step1: Console to ASW1 from PC console 1 ASW1(config)#aaa new-model ASW1(config)#radius-server host 172.39.255 DSW1(config-ext-nacl)#exit DSW1(config)#vlan access-map PASS 10 DSW1(config-access-map)#match ip address 10 DSW1(config-access-map)#action forward DSW1(config-access-map)#exit DSW1(config)#vlan access-map PASS 20 DSW1(config-access-map)#action drop DSW1(config-access-map)#exit DSW1(config)#vlan filter PASS vlan-list 20 DSW1#copy run start "Pass Any Exam.actualtests.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." .120.40. Any Time.0.com 122 .www.0 0.120.

The highest number represents the highest priority. standby group B. 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. 120 D. 1024 Answer: B Explanation: standby[group-number]prioritypriority [preempt[delaydelay]] Set apriorityvalue used in choosing the active router. Any Time. When a tracked interface fails. If an interface is not tracked. Infrastructure Services QUESTION NO: 137 Which configuration command ties the router hot standby priority to the availability of its interfaces? A.html QUESTION NO: 138 What is the default HSRP priority? A.www.the default priority is 100. standby priority C. • "Pass Any Exam.com 123 . the hot standby priority on the device on which tracking has been configured decreases by 10.Cisco 300-115 Exam Topic 3.1_19_ ea1/configuration/guide/swhsrp. Reference:http://www.com/en/US/docs/switches/lan/catalyst3550/software/release/12. 100 C. 50 B. The range is 1 to 255. you can configure a separate list of interfaces to be tracked. backup interface D.actualtests. its state changes do not affect the hot standby priority of the configured device.cisco." . For each interface configured for hot standby.

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

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

102-udp 1985 (version2) 224.0.Weighted algorithm." .102 udp 3222 Timers Hello – 3 seconds Advertisement – 1 second Hello – 3 seconds (Hold) 10 seconds (Master Down Interval)3 * Advertisement + skew time (Hold) 10 seconds (Skew time)(256-priority) / 256 Load-balancing functionality .Host-dependent algorithm. .0. .18 – IP 112 224.0..0.com 126 .(generally through DHCP) Clients are transparently updated with virtual MAC according to load-balancing algorithm through ARP requesting a unique virtual gateway.actualtests.Multiple VRRP group per interface/SVI/routed int.0.(generally through DHCP) Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing. Load-balancing oriented.2 – udp 1985 (version1)224.com/2008/08/23/router-high-availability-protocolcomparison-2/ QUESTION NO: 141 What is the default amount by which the hot standby priority for the router is decremented or incremented when the interface goes down or comes back up? "Pass Any Exam.Cisco 300-115 Exam yes yes yes Traffic type 224.www.Multiple HSRP group per interface/SVI/routed int. Requires appropriate distribution of Virtual GW IP per Clients for optimal load-balancing.0. Reference: http://cciethebeginning.0. Any Time.wordpress.0.Round-Robin algorithm (default).

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

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

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

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

Currently all interfaces are up. you have been asked to investigate and respond to the following question. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration. The distribution switches are configured to use HSRP to provide a high availability solution.shtml#dr QUESTION NO: 148 Ferris Plastics. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.Cisco 300-115 Exam A. Incorrect GLBP IP address C. 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. Verify the spanning-tree topology and check if there is any layer2 loop.actualtests. then it indicates that this router is receiving its own hello packets sent. If the interface MAC address is different from the one reported in the error message.0.0.255. then some other device with a MAC address reports this error message.0.255.cisco.com 131 .com/en/US/products/hw/switches/ps708/products_configuration_exam ple09186a00807d2520. Unavailable GLBP active forwarder B. Inc.www. is a medium sized company." . Troubleshooting has identified several issues. unless GigabitEthernet1/0/1 on backup device has also failed. issue the show interface command to verify the MAC address of the interface.102 and User Datagram Protocol (UDP) port 3222 (source and destination). Reference:http://www. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. When configuring the multicast boundary command. with an enterprise network (access.0 15. • DSW1 –primary device for VLAN 101 VLAN 102 and VLAN 105 • DSW2 – primary device for VLAN 103 and VLAN 104 • A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. "Pass Any Exam. permit the Multicast address by permit 224. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. In order to resolve this issue.255. Any Time. HSRP configured on same interface as GLBP D.

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

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

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

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

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

with an enterprise network (access. you have been asked to investigate and respond to the following question. Using the running configurations and show commands. • DSW1 –primary device for VLAN 101 VLAN 102 and VLAN 105 • DSW2 – primary device for VLAN 103 and VLAN 104 • A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device.www. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. Any Time. unless GigabitEthernet1/0/1 on backup device has also failed.actualtests. "Pass Any Exam.Cisco 300-115 Exam QUESTION NO: 151 Ferris Plastics.com 139 . is a medium sized company." . Troubleshooting has identified several issues. Inc. The distribution switches are configured to use HSRP to provide a high availability solution. Currently all interfaces are up.

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

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

Troubleshooting has identified several issues. Inc. unless GigabitEthernet1/0/1 on backup device has also failed. "Pass Any Exam. • 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. Currently all interfaces are up.actualtests.www." . Using the running configurations and show commands. with an enterprise network (access. you have been asked to investigate and respond to the following question. is a medium sized company.Cisco 300-115 Exam QUESTION NO: 152 Ferris Plastics. The distribution switches are configured to use HSRP to provide a high availability solution. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. Any Time.com 142 .

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

com 144 . is a medium sized company. 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 . QUESTION NO: 153 Ferris Plastics. Inc. Very easy to se“priority of Vlan1”5 is 100.www. Troubleshooting has identified several issues.actualtests. unless GigabitEthernet1/0/1 on backup device has also failed. Any Time. you have been asked to investigate and respond to the following question. Using the running configurations and show commands." . Currently all interfaces are up. with an enterprise network (access.Cisco 300-115 Exam Use "show standby brief" command on console2. The distribution switches are configured to use HSRP to provide a high availability solution.primary device for VLAN 103 and VLAN 104 • A failure–of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. "Pass Any Exam.

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

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

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

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

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

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

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

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

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

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

"Pass Any Exam." .actualtests.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. Any Time. They have questions about how these two devices will perform in the event of a device failure.www.com 155 .

0010 C. 4000. 4000.ac01 D.com 156 .0000. 4000.0000.ac01 E.ac02 B.0c07." .Cisco 300-115 Exam What is the virtual mac-address of HSRP group 1? A.0000.ac02 "Pass Any Exam.0c07. 0000. Any Time.www.actualtests. 0000.

actualtests.www. Any Time.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. MixQUESTIONS QUESTION NO: 158 Refer to the exhibit.0c07. 0000.0010 as shown below: Topic 4.0000. "Pass Any Exam.com 157 .

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

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

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