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Exam : 300-115

Title : Implementing Cisco IP
Switched Networks

Version : V18.02

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The safer , easier way to help you pass any IT exams. 

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-series- switches/
qa_c67-722110.html

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

3.What percentage of bandwidth is reduced when a stack cable is broken?
A. 0
B. 25
C. 50
D. 75
E. 100
Answer: C
Explanation:
Physical Sequential Linkage
The switches are physically connected sequentially, as shown in Figure 3. A break in any one of the
cables will result in the stack bandwidth being reduced to half of its full capacity. Subsecond timing
mechanisms detect traffic problems and immediately institute failover. This mechanism restores dual path
flow when the timing mechanisms detect renewed activity on the cable. Figure 3. Cisco StackWise
Technology Resilient Cabling

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Auto Places an interface into a passive negotiating state. With the on mode.switches/ prod_white_paper09186a00801b096a.  Reference: http://www. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto Answer: D Explanation: The different ether channel modes are described in the table below: Mode Description active Places an interface into an active negotiating state. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto B. in which the interface re.cisco.com/c/en/us/products/collateral/switches/catalyst-3750-series. a usable 3 / 121 . On Forces the interface into an EtherChannel without PAgP or LACP. easier way to help you pass any IT exams. 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 passive C. desirable Places an interface into an active negotiating state.html 4. in which the interface starts negotiations with other interfaces by sending LACP packets. in which the interface starts negotiations with other interfaces by sending PAgP packets. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto D. This setting minimizes the transmission of PAgP packets.Refer to the exhibit. The safer .tion.sponds to PAgP packets it receives but does not start PAgP packet negotia.

Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12- 1_13_ea1/configuration/guide/3550scg/swethchl. easier way to help you pass any IT exams. Answer: C Explanation: To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session. for Layer 2 EtherChannels.  EtherChannel exists only when an interface group in the on mode is connected to another interface group in the on mode. Apply the monitor session filter globally to allow only traffic from VLAN 10. or to limit (filter) SPAN source traffic to specific VLANs. An interface in the auto mode can form an EtherChannel with another interface in the desirable mode. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack.Refer to the exhibit. use the monitor session filter global configuration command. You can 4 / 121 . This setting minimizes the transmission of LACP packets. Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10.cisco. Passive Places an interface into a passive negotiating state. Reference: http://www.html 5. B. C. 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.sponds to LACP packets that it receives. D. An interface in the on mode that is added to a port channel is forced to have the same characteristics as the already existing on mode interfaces in the channel. Interfaces can form an EtherChannel when they are in different PAgP modes as long as the modes are compatible. For example: An interface in the desirable mode can form an EtherChannel with another interface that is in the desirable or auto mode. Both the auto and desirable PAgP modes allow interfaces to negotiate with partner interfaces to determine if they can form an EtherChannel based on criteria such as interface speed and. in which the interface re. Change the monitor session source to VLAN 10 instead of the physical interface. Usage Guidelines You can set a combined maximum of two local SPAN sessions and RSPAN source sessions. The safer . trunking state and VLAN numbers. 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. but does not start LACP packet ne-gotiation.

If a VLAN is a source. If you specify a series of VLANs. A monitor session on the access switch with a remote SPAN VLAN source and the physical interface as the destination F. | -] options. you must enter a space before and after the hyphen (-). By default. VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports.) A. you must enter a space before and after the comma. You select a series or range of VLANs by using the [. all VLANs are monitored on trunk source ports. VLAN filtering cannot be enabled. VLAN monitoring and VLAN filtering are mutually exclusive. A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination E.html#wp3 875419997 6. easier way to help you pass any IT exams. The safer .Refer to the exhibit. A monitor session on the distribution switch with a physical interface as the source and a physical interface as the destination Answer: BCD Explanation: You can analyze network traffic passing through ports or VLANs by using SPAN or RSPAN to send a copy 5 / 121 .cisco. Which three items must be configured to mirror traffic to a packet sniffer that is connected to the distribution switch? (Choose three. A network engineer wants to analyze all incoming and outgoing packets for an interface that is connected to an access switch. Reference: http://www. 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.  monitor traffic on a single VLAN or on a series or range of ports or VLANs. If VLAN filtering is configured. A monitor session on the distribution switch with a physical interface as the source and the remote SPAN VLAN as the destination B. If you specify a range of VLANs. a VLAN cannot become a source.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_m anagement/command_reference/b_nm_3se_3850_cr/ b_nm_3se_3850_cr_chapter_010. A remote SPAN VLAN on the distribution and access layer switch C. A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination D.

passive Places a port into a passive negotiating state in which the port responds to LACP packets that it receives. while Switch B is configured with channel-group 1 mode desirable. You can not mix the LACP and PAGP protocols to form an etherchannel. Here is a summary of the various etherchannel modes: EtherChannel PAgP Modes Mode Description auto Places a port into a passive negotiating state. but does not start LACP packet negotiation. B. in which the port starts negotia. and destination ports on different switches (or different switch stacks).2_55_se/configuration/guide/3750xscg/swspan.An EtherChannel bundle has been established between a Cisco switch and a corporate web server.tions with other ports by sending LACP packets. Reference: http://www. RSPAN supports source ports. 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.html 8. The destination is always a physical port Reference: http://www.tions with other ports by sending PAgP packets. which is an LACP mode. What should be done on the Cisco switch to allow for better EtherChannel utilization to the corporate web server? 6 / 121 . which is a PAGP mode. This mode is not supported when the EtherChannel members are from differ. and the other is using desirable. This setting minimizes the transmission of LACP packets.html 7. The switch ports are not configured in trunking mode. Each RSPAN source switch must have either ports or VLANs as RSPAN sources.After an EtherChannel is configured between two Cisco switches. Switch A is configured with channel-group 1 mode active.  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. in which the port responds to PAgP packets it receives but does not start PAgP packet negotiation.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/ release/12. Answer: A Explanation: Here we have a situation where one switch is using active mode.cisco. desirable Places a port into an active negotiating state. The RSPAN traffic from the source ports or VLANs is copied into the RSPAN VLAN and forwarded over trunk ports carrying the RSPAN VLAN to a destination session monitoring the RSPAN VLAN. easier way to help you pass any IT exams. Why is the EtherChannel bundle not working? A.ent switches in the switch stack (cross-stack EtherChannel). The channel group identifier must be different for Switch A and Switch B. This setting minimizes the transmission of PAgP packets.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12- 2_55_se/ configuration/guide/scg_2960/swethchl. enabling remote monitoring of multiple switches across your network. EtherChannel LACP Modes Mode Description active Places a port into an active negotiating state in which the port starts negotia. C. LACP priority must be configured on both switches. interface port channel 1 is in the down/ down state. The safer . SPAN copies (or mirrors) traffic received or sent (or both) on source ports or source VLANs to a destination port for analysis. The network administrator noticed that only one of the EtherChannel links is being utilized to reach the web server. D. This mode is not supported when the EtherChannel members are from differ. source VLANs. The switches are using mismatched EtherChannel negotiation modes.ent switches in the switch stack (cross-stack EtherChannel).cisco.

Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle. This command is configured globally: monitor session 2 filter vlan 1 . Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server. 52 What is the result of the implemented command? A. D. All VLAN traffic is sent to the SPAN destination interface. C. For example.cisco.8. easier way to help you pass any IT exams. Answer: E Explanation: The "monitor session filter" command is used to specify which VLANS are to be port mirrored using SPAN.com/c/en/us/support/docs/lan-switching/etherchannel/12023- 4.2/25ew/configuration/guide/conf/span. B. Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices. 9 Reference: http://www. Use of source addresses or IP addresses can result in a better load balance.html/ index. or Layer 4 port numbers. IP addresses. and 52 is replicated to the SPAN destination port. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle. The safer . Answer: A Explanation: If all of the routers are connected to each other using a layer 2 switch. since all traffic is going to the same web server). Cisco Express Forwarding is enabled locally.Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. Answer: E Explanation: EtherChannel load balancing can use MAC addresses. and either source mode. The routers are connected via a Layer 2 switch.html 9. C. 39. D. Reference: http://www. The engineer notices only a single neighbor that uses Cisco Discovery Protocol. or both.html#wp1066836 10. What would cause the output to show only the single neighbor? A.  A. use of the destination MAC address results in the choice of the same link in the channel each time. E. 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 . B. IP routing is disabled on neighboring devices. The trunk's native VLAN must be changed to something other than VLAN 1.5 . D. but it has several routing neighbor relationships.cisco. Use the option that provides the greatest variety in your configuration. E.A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. if the traffic on a channel only goes to a single MAC address (which is the case in this example. Traffic from VLANs 1 to 8. then each router will only have the 7 / 121 . The mode you select applies to all EtherChannels that you configure on the switch. B. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs. 39. Adjust the EtherChannel load-balancing method based on source IP addresses. destination mode. Adjust the EtherChannel load-balancing method based on destination IP addresses. Traffic from VLAN 4 is not sent to the SPAN destination interface. C.com/c/en/ us/td/docs/switches/lan/catalyst4500/12.

wikipedia. Make sure that no password is set between the server and client. Local Area Mobility B. easier way to help you pass any IT exams.shtml 8 / 121 . However. principally wired Ethernet. D. If any password is set. a network engineer notices that directly connected devices that use Cisco Discovery Protocol are not visible. make sure that the password is the same on both sides.Several new switches have been added to the existing network as VTP clients. Make sure that if EtherChannels are created between two switches.After the implementation of several different types of switches from different vendors. VLANs are not passing from the VTP server (existing network) to the VTP clients. 11. ·The VTP domain name must match and it is case sensitive. Answer: D Explanation: VTP allows switches to advertise VLAN information between other members of the same VTP domain.  single switch port that it connects to as its neighbor. One of the switches must be the VTP server in a VTP domain. Which vendor-neutral protocol could be used to resolve this issue? A. Make sure that all ports that interconnect switches are configured as trunks and are actually trunking. 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. LLDP performs functions similar to several proprietary protocols. CISCO and cisco are two different domain names. capabilities. Reference: http://www. only Layer 2 EtherChannels propagate VLAN information. What must be done to fix this? A. Verify these items if switches that run VTP fail to exchange VLAN information: VTP information only passes through a trunk port. password. The safer . Remove the VTP domain name from all switches with "null" and then replace it with the new domain name. There are several reasons why the VLAN information can fail to be exchanged. All of the new switches have been configured with the same VTP domain. Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred. B. VTP allows a consistent view of the switched network across all switches. Provision one of the new switches to be the VTP server and duplicate information from the existing network.cisco. such as the Cisco Discovery Protocol (CDP). only the physical port that it connects to will be seen as a CDP neighbor. Reference: http://en. but not necessarily the logical topology. Make sure that the VLANs are active in all the devices. and version. C. and neighbors on an IEEE 802 local area network.org/wiki/ Link_Layer_Discovery_Protocol 12. CDP can be used to determine the physical topology. Link Layer Discovery Protocol C. Configure a different native VLAN on all new switches that are configured as VTP clients.com/en/US/tech/tk389/tk689/ technologies_tech_note09186a0080890613. All VLAN changes must be done on this switch in order to have them propagated to the VTP clients. NetFlow D. Even though multiple routing neighbors can be formed over a layer 2 network.

  13.1SY/config_guide/sup2T/vtp . Switch A.Refer to the exhibit. Answer: A Explanation: VTP transparent switches do not participate in VTP. Enable VTP version 3. The VTP revision number of the Switch B is higher than that of Switch A.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52. Switch C receives VLAN information from the VTP server Switch A.com/en/US/docs/switches/lan/ catalyst6500/ios/15. If you convert from VTP version 3 to VTP version 2. the extended VLANs are not being propagated to other VTP switches. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2. D. which supports extended VLAN propagation. VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094). Ensure that all switches run the same Cisco IOS version. B. Switch B is configured in transparent mode. D. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements. Reference: http://www. VTP does not support extended VLANs and should be manually added to all switches. while Switch C is configured with a trunk port to Switch B.range VLANs (VLAN numbers 1006 to 4094). VTP authentication is required when using extended VLANs because of their ability to cause network instability. Reference: http://www.cisco. C. What is the most probable cause of this behavior? A.cisco. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use.pdf 14. What should be configured for extended VLANs? A. and C are trunked together and have been properly configured for VTP. the VLANs in the range 1006 to 4094 are removed from VTP control. Switch B is configured with an access port to Switch A. C.After implementing VTP. B. easier way to help you pass any IT exams. The trunk between Switch A and Switch B is misconfigured.shtml 9 / 121 . B. but Switch B does not receive any VLAN information. Answer: B Explanation: VTP version 1 and VTP version 2 do not propagate configuration information for extended. The safer . You must configure extended-range VLANs manually on each network device.

and C are trunked together and have been properly configured for VTP. C.1D STP.Refer to the exhibit. multicast. C. Without VTP pruning. This path is different than using the root port. What would cause this issue? A. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. is that VTP pruning has been configured.  15. The safer . The trunk between Switch A and Switch B is misconfigured. VTP pruning blocks unneeded flooded traffic to VLANs on trunk ports that are included in the pruning-eligible list. VTP pruning is configured globally on all switches and it removed VLANs from the trunk interface that is connected to Switch C.1D STP and PortFast have been configured by default on all newly implemented Cisco Catalyst switches. 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. IEEE 802. The 10 / 121 . 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. easier way to help you pass any IT exams. but Switch C is not receiving traffic from certain VLANs. Switch A. VTP pruning is disabled by default. These ports are allowed to immediately enter the forwarding state rather than passively wait for the network to converge. The administrator has defined the switch as the root in the STP domain. a switch floods broadcast. 16. A VTP authentication mismatch occurred between Switch A and Switch B. B. Answer: A Explanation: RSTP works by adding an alternative port and a backup port compared to STP. D. B. the network engineer notices that the port roles that were once "blocking" are now defined as "alternate" and "backup. B. The port roles have been adjusted based on the interface bandwidth and timers of the new Cisco Catalyst switches." What is the reason for this change? A. The best explanation for why switch C is not seeing traffic from only some of the VLANs. The VTP revision number of Switch B is higher than that of Switch A. The new switches are using RSTP instead of legacy IEEE 802. D.After the recent upgrade of the switching infrastructure. Switch B has all VLANs.

2SX/configuration/guide/book/ vtp. unknown. The MAC address-table will be flushed every 3 minutes. C.cisco. The default timeout period will be 360 seconds. This is how long a dynamic MAC address will remain in the CAM table. PBR Answer: C Explanation: VTP pruning enhances network bandwidth use by reducing unnecessary flooded traffic. a network administrator can manually disable a port Reference: http://www. VTP pruning D.protocol/24062146. easier way to help you pass any IT exams.cisco. After testing. In switched networks today. such as broadcast.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.html 18. most links operate in full-duplex mode and are treated as point-to-point links by RSTP.What effect does the mac address-table aging-time 180 command have on the MAC address. VTP pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to access the appropriate network devices. To have two links to the same collision domain. access lists B. D. B.point links. By default. B. DTP in nonegotiate C.html#wp1020444 19. The safer . it has been determined that several ports are not transitioning as they should. The link type is automatically derived from the duplex mode of a port. and flooded unicast packets to only the switches that require it. the switch must be attached to a hub.An administrator recently configured all ports for rapid transition using PortFast. VTP pruning is disabled. C. Reference: http://www.table? A. The STP root bridge selection is forcing key ports to remain in non-rapid transitioning mode.com/c/en/us/support/docs/lan-switching/spanning-tree. Reference: http:// www. RSTP has been enabled per interface and not globally.html 17. This makes them candidates for rapid transition to the forwarding state. A port that operates in full-duplex is assumed to be point-to-point. What is the reason for this? A. not on trunk links.  alternative port moves to the forwarding state if there is a failure on the designated port for the segment. while a half-duplex port is considered as a shared port by default. The backup port applies only when a single switch has two links to the same segment (collision domain). The switch does not have the processing power to ensure rapid transition for all ports.Which technique automatically limits VLAN traffic to only the switches that require it? A.cisco. ARP requests will be processed less frequently by the switch. Disabled port Not strictly part of STP. 11 / 121 .com/c/en/us/support/docs/lan-switching/ spanning-tree- protocol/24062-146. Backup port A backup/redundant path to a segment where another bridge port already connects. STP is unable to achieve rapid transition for trunk links. This automatic link type setting can be overridden by explicit configuration. D. Answer: C Explanation: RSTP can only achieve rapid transition to the forwarding state on edge ports and on point-to. multicast.

After the damaged cable was replaced. such as the detection of a loopback. The SDM template is causing the CPU of the switch to spike during peak working hours. some configurations may be prone to accidental violations. 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. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes. perform this task: Command Purpose Step 1 switch# configure Enters configuration mode. The safer . The VLAN receives additional frames from neighboring switches.and is discarded from the MAC address table. this can be done by issuing shutdown followed by no shutdown on the interface. What is the root cause of this issue? A. The SDM VLAN template causes the MAC address-table to overflow. IP Event Dampening D. Entering the value 0 disables the MAC aging. assess. However. To configure the aging time for all MAC addresses. terminal Step 2 switch(config)# mac. and a steady recurrence of these can amount to a huge time sink for the administrative staff. time seconds [vlan The range is from 0 to 1000000. By default. the link was placed into a non-forwarding state due to a fault with UDLD. macros B. or a broadcast storm. What solution allows the network switch to automatically recover from such an issue? A. a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. errdisable autorecovery C. This is where errdisable autorecovery can be of great assistance.html#wp1126206 20. 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. B.net/blog/2009/sep/14/errdisable-autorecovery/ 21. This gives the offending issue a chance to be cleared by the user (for example. UDLD failure. easier way to help you pass any IT exams.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/ cli/ CLIConfigurationGuide/MACAddress. 12 / 121 . the link did not recover.  E. by removing an unapproved device) without the need for administrative intervention.A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. If a VLAN is not specified.cisco. The idea behind requiring administrative action is so that a human engineer can intercede. the aging specification applies to all VLANs.While working in the core network building.Specifies the time before an entry ages out address-table aging. We can configure the switch to automatically re-enable any error-disabled interfaces after a specified timeout period. Bidirectional Forwarding Detection Answer: B Explanation: There are a number of events which can disable a link on a Catalyst switch. Reference: http://packetlife. the default is vlan_id] 300 seconds. manual intervention by an administrator is necessary to restore the interface to working order. command aliases E. and (ideally) correct the issue. As designed.

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C. The VLAN template disables routing in hardware.
D. The switch needs to be rebooted before the SDM template takes effect.
Answer: C
Explanation:
SDM Template Notes: All templates are predefined. There is no way to edit template category individual
values. The switch reload is required to use a new SDM template. The ACL merge algorithm, as opposed
to the original access control entries (ACEs) configured by the user, generate the number of TCAM
entries listed for security and QoS ACEs. The first eight lines (up to Security ACEs) represent
approximate hardware boundaries set when a template is used. If the boundary is exceeded, all
processing overflow is sent to the CPU which can have a major impact on the performance of the switch.
Choosing the VLAN template will actually disable routing (number of entry for unicast or multicast route is
zero) in hardware. Reference: http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-
switches/44921swdatabase-3750ss-44921.html

22.An access switch has been configured with an EtherChannel port. After configuring SPAN to monitor
this port, the network administrator notices that not all traffic is being replicated to the management
server.
What is a cause for this issue?
A. VLAN filters are required to ensure traffic mirrors effectively.
B. SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic.
C. The port channel can be used as a SPAN source, but not a destination.
D. RSPAN must be used to capture EtherChannel bidirectional traffic.
Answer: C
Explanation:
A source port or EtherChannel is a port or EtherChannel monitored for traffic analysis. You can configure
both Layer 2 and Layer 3 ports and EtherChannels as SPAN sources. SPAN can monitor one or more
source ports or EtherChannels in a single SPAN session. You can configure ports or EtherChannels in
any VLAN as SPAN sources. Trunk ports or EtherChannels can be configured as sources and mixed with
nontrunk sources. A port-channel interface (an EtherChannel) can be a SPAN source, but not a
destination. Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ ios/12-
2SX/configuration/guide/book/ span.html#wp1040905

23.Refer to the exhibit.

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What is the result of the configuration?
A. The EtherChannels would not form because the load-balancing method must match on the devices.
B. The EtherChannels would form and function properly even though the load-balancing and
EtherChannel modes do not match.
C. The EtherChannels would form, but network loops would occur because the load-balancing methods
do not match.
D. The EtherChannels would form and both devices would use the dst-ip load-balancing method because
Switch1 is configured with EtherChannel mode active.
Answer: B
Explanation:
An etherchannel will form if one end is active and the other is passive. 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. As a
result, all channels (manually configured, PagP, or LACP) use the same load-balancing. This is true for
the switch globally, although each switch involved in the etherchannel can have non matching parameters
for load balancing.
Reference: http://www.cisco.com/ c/en/us/ td/docs/switches/lan/catalyst4500/12-
2/54sg/configuration/guide/config/channel.html#wp1020804

24.A network engineer tries to configure storm control on an EtherChannel bundle.
What is the result of the configuration?
A. The storm control settings will appear on the EtherChannel, but not on the associated physical ports.
B. The configuration will be rejected because storm control is not supported for EtherChannel.
C. The storm control configuration will be accepted, but will only be present on the physical interfaces.
D. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.
Answer: D
Explanation:

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After you configure an EtherChannel, any configuration that you apply to the port-channel interface affects
the EtherChannel; any configuration that you apply to the physical interfaces affects only the interface
where you apply the configuration. Storm Control is an exception to this rule. For example, you cannot
configure Storm Control on some of the members of an EtherChannel; Storm Control must be configured
on all or none of the ports. If you configure Storm Control on only some of the ports, those ports will be
dropped from the EtherChannel interface (put in suspended state). Therefore, you should configure Storm
Control at the EtherChannel Interface level, and not at the physical interface level. Reference: http://
www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12- 2/31sg/configuration/guide/ conf/
channel.html

25.What is the function of NSF?
A. forward traffic simultaneously using both supervisors
B. forward traffic based on Cisco Express Forwarding
C. provide automatic failover to back up supervisor in VSS mode
D. 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, increasing operational efficiency, boosting nonstop communications, and scaling
system bandwidth capacity to 1.4 Tbps. Switches would operate as a single logical virtual switch called a
virtual switching system 1440 (VSS1440). VSS formed by two Cisco Catalyst 6500 Series Switches with
the Virtual Switching Supervisor 720-10GE. In a VSS, the data plane and switch fabric with capacity of
720 Gbps of supervisor engine in each chassis are active at the same time on both chassis, combining for
an active 1400-Gbps switching capacity per VSS. Only one of the virtual switch members has the active
control plane. 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. Reference:
http://ciscorouterswitch.over-blog.com/articlecisco-catalyst-6500-series-vss-1440- 124536783.html

26.After UDLD is implemented, a Network Administrator noticed that one port stops receiving UDLD
packets. This port continues to reestablish until after eight failed retries. The port then transitions into the
errdisable state.
Which option describes what causes the port to go into the errdisable state?
A. Normal UDLD operations that prevent traffic loops.
B. UDLD port is configured in aggressive mode.
C. UDLD is enabled globally.
D. UDLD timers are inconsistent.
Answer: B
Explanation:
With UDLD aggressive mode enabled, when a port on a bidirectional link that has a UDLD neighbor
relationship established stops receiving UDLD packets, UDLD tries to reestablish the connection with the
neighbor. After eight failed retries, the port is disabled.
Reference: http://www.cisco.com/c/en/us/td/docs/ switches/lan/ catalyst6500/ios/12-
2SX/configuration/guide/book/udld.html

15 / 121

The port is fully operational and no known issues are detected.Pilot testing of the new switching infrastructure finds that when the root port is lost. UDLD is disabled on all interfaces. An uplink group is a set of Layer 2 interfaces (per VLAN). the status will transition to bidirectional. easier way to help you pass any IT exams." Which statement describes what this indicates about the status of the port? A. UDLD Answer: D Explanation: If a switch loses connectivity.A network engineer must adjust the STP interface attributes to influence root port selection.html 29. which is not necessarily an error condition. The uplink group provides an alternate path in case the currently forwarding link fails. Which spanning-tree technology is used to accomplish backup root port selection? A. We can enable UDLD globally on the device. Reference: http://packetlife. only one of which is forwarding at any given time.com/c/en/us/td/docs/switches/lan/ catalyst2960/software/release/12- 2_55_se/configuration/guide/scg_2960/swstpopt. you can accelerate the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. as it would with the normal spanning-tree procedures. This enables UDLD in normal mode.  27. it begins using the alternate paths as soon as the spanning tree selects a new root port. 16 / 121 . UplinkFast E. an uplink group consists of the root port (which is forwarding) and a set of blocked ports. STP immediately replaces the root port with an alternative root port. PortFast C. D. an engineer notices that the. UDLD moved into aggressive mode after inconsistent acknowledgements were detected. Specifically. C.net/blog/2011/mar/7/udld/ 28. PVST+ B. The UDLD port is placed in the "unknown" state for 5 seconds until the next UDLD packet is received on the interface. Answer: A Explanation: By default.After reviewing UDLD status on switch ports. except for self-looping ports. By enabling UplinkFast with the spanning-tree uplinkfast global configuration command. so when UDLD is first enabled and does not detect a neighbor the link state is considered unknown.cisco. It would be prohibitively difficult to coordinate the configuration of UDLD on both ends of a link at the same time. Reference: http://www. UplinkFast provides fast convergence after a direct link failure and achieves load balancing between redundant Layer 2 links using uplink groups. The bidirectional status of "unknown" indicates that the port will go into the disabled state because it stopped receiving UDLD packets from its neighbor. B. The safer . Loop Guard F. The root port transitions to the forwarding state immediately without going through the listening and learning states. or individually on specific interfaces with the command udld port. BackboneFast D. The port will remain operational during this time. When UDLD is finally enabled on the other end.

The switches do not forward these frames but use them to construct a loop-free path. The path cost value represents the media speed. BPDUs contain information about the sending switch and its ports. including switch and MAC addresses.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/ release/12. or both source and destination addresses. The safer . port priority. Adjust the switch SDM back to "default". Reference: http://www. easier way to help you pass any IT exams.cisco. If a network segment in the spanning tree fails and a redundant path exists.) A. link type E. You configure the load balancing and forwarding method with use of the port-channel load-balance {dst-ip | dst-mac | src-dst-ip | src-dst-mac | src-ip | src-mac} global configuration command. root guard Answer: AB Explanation: Spanning tree forces redundant data paths into a standby (blocked) state.html 30. 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. Configure the new load balancing method using port-channel load-balance. source or destination addresses. 17 / 121 .Refer to the exhibit. Reference: http://www.2_55_se/configuration/guide/3750xscg/swstp.  Which two elements are used to accomplish this? (Choose two. Upgrade the PFC to support the latest load balancing methods. and path cost. EtherChannel load balancing can use MAC addresses or IP addresses. The mode applies to all EtherChannels that are configured on the switch.cisco. D. at regular intervals. the spanning-tree algorithm recalculates the spanning-tree topology and activates the standby path. B.A network engineer must set the load balance method on an existing port channel. port-priority B. 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. Switches send and receive spanning-tree frames. Ensure that IP CEF is enabled globally to support all load balancing methods. switch priority. Which action must be done to apply a new load balancing method? A. When two ports on a switch are part of a loop.html 31. 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. cost C. forward-timers D.com/c/en/us/support/docs/lan-switching/etherchannel/120234. called bridge protocol data units (BPDUs). Answer: A Explanation: 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. C.

Cisco Discovery Protocol source interface E. Cisco Discovery Protocol logging options Answer: A Explanation: CDP Version 1 -. Cisco Discovery Protocol version 2 B. Answer: C Explanation: With the SAPN destination port.  A network engineer investigates a recent network failure and notices that one of the interfaces on the switch is still down. Reference: http://www.This is the first version of CDP which was used for the discovery of Cisco devices in the network. There is a layer 1 physical issue. Which option must be enabled to allow for enhanced reporting mechanisms using Cisco Discovery Protocol? A. It allows you to track instances even if the native VLAN ID or port duplex states do not match between connecting devices. the state of the destination port is up/down by design. The interface is configured as the source of the SPAN session. C. What is causing the line protocol on this interface to be shown as down? A. it is found that rapid error tracking is not currently enabled. This version is mainly used for backward compatibility. The safer .cisco. The interface is configured as the target of the SPAN session.While doing network discovery using Cisco Discovery Protocol.com/CiscoSB/GetArticle. B.cisco. This is the normal operational state for SPAN destinations. There is a duplex mismatch on the interface.shtml 32. Cisco IOS Embedded Event Manager C. The interface shows the port in this state in order to make it evident that the port is currently not usable as a production port.This is the most recent version of CDP which has enhanced features such as rapid reporting mechanism. which is used to track down errors and minimize costly downtime. CDP Version 2 -. easier way to help you pass any IT exams. Reference: http://sbkb. E.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c61 2.aspx? docid=0ed03cbac49b446ab390a657917d817c_Cisco_Discovery_Protocol_CDP__Properties_Set 18 / 121 . This is the default version on all switches. There is a speed mismatch on the interface. logging buffered D. D.

DTP C. otherwise the link will be a non-trunking link. VTP pruning B. ISL D. You can use this command only when the interface switchport mode is access or trunk. Apply BPDU guard and BPDU filter.asp?p=2181837&seqNum=8 35. DTP causes increased traffic. D.  tings_on_Sx500_S.xml&pid=2&converted=0 33. Answer: AB Explanation: The Dynamic Trunking Protocol (DTP) is used to negotiate forming a trunk between two Cisco devices.com/en/US/docs/switches/lan/catalyst3550/software/release/12. L2P tunneling Answer: C Explanation: By default. you can remove VLANs from the allowed list. VLAN access-list E.cisco. PPP B.com/articles/article. HDLC E. transparent bridging C. but may be disabled.Which technique allows specific VLANs to be strictly permitted by the administrator? A. use the "switchport trunk allowed vlan remove vlan-list" interface configuration command to remove specific VLANs from the allowed list. Disable DTP on a per interface basis. trunk allowed VLANs D.Which two protocols can be automatically negotiated between switches for trunking? (Choose two. All VLAN IDs. B. are allowed on each trunk. a trunk port sends traffic to and receives traffic from all VLANs. DOT1Q Answer: CF 19 / 121 . preventing traffic from those VLANs from passing over the trunk. configure "switchport nonegotiate.) A. the IT manager has prohibited users from dynamically establishing trunks with their associated upstream switch. The safer . Which two actions can prevent interface trunking? (Choose two. To disable DTP." This prevents the interface from generating DTP frames. However. C. 1 to 4094. Configure trunk and access interfaces manually. and is enabled by default. To restrict the traffic a trunk carries.1_13_ea1/confi guration/ guide/swvlan. You must manually configure the neighboring interface as a trunk interface to establish a trunk link. Enable switchport block on access ports. Reference: http://www.html 34. Reference: http://www.For security reasons.ciscopress. easier way to help you pass any IT exams. DLCI F.) A.

D. it takes up to 4 hours propagate. The safer .com/en/US/docs/switches/lan/catalyst3560/software/ release/12. you cannot convert from VTP version 3 to version 1 or 2. 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. Which action resolves this problem? A. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work.cisco. Reload the new switch.57313/ Dynamic%20Trunking%20Protocol. The VTP version number must be set to version 3. The first thing that should be done is to verify that the trunk ports are connected and up.com/servlet/JiveServlet/previewBody/14792-102-1. C. Reference: https://learningnetwork. C. When hidden. The VTP server must be reloaded. Restart the VTP process on the new switch. Reference: http://www. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? 20 / 121 . you can directly configure the password secret key. B. but it does not appear in plain text in the configuration. You must reenter the password if you enter a takeover command in the domain. Verify connected trunk ports.PDF 36. the secret key from the password string is saved in the VLAN database file.After configuring new data VLANs 1020 through 1030 on the VTP server.A network is running VTPv2. Instead. 37. the key associated with the password is saved in hexadecimal format in the running configuration. If extended VLANs are configured. the network engineer notices that the new switch is not receiving the list of VLANs from the server. After each update to the VTP server. Support for extended range VLAN (VLANs 1006 to 4094) database propagation.cisco. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command. E. What is the problem? A.1Q or ISL trunking encapsulation. Reload the VTP server. D.html#wp1316856 38.2_52_se/config uration/guide/swvtp. VTP must be stopped and restarted on the server. easier way to help you pass any IT exams. VTP versions 1 and 2 propagate only VLANs 1 to 1005.  Explanation: Switches such as the Catalyst 3550 that are capable of either 802. After verifying all VTP settings. Another switch in the domain has a higher revision number than the server. a network engineer notices that none of the VTP clients are receiving the updates. When you enter the secret keyword. B.A network engineer is extending a LAN segment between two geographically separated data centers.

com/document/11836/how-define-vlans-allowed-trunk. Modify the spanning-tree priorities to dictate the traffic flow. 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. 30 is issued. VTP pruning removed all unused VLANs.cisco. 1024 D. Reference: http://www. Create a Layer 3 transit VLAN to segment the traffic between the sites. all other existing VLANs no longer pass traffic over the trunk. 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. and it avoids the use of the spanning tree.When you design a switched network using VTPv2. and overwrite any others that were previously defined. 20. Therefore.shtml 39. and 30) are allowed to traverse the switch trunk interface. D. Since the question asked for the choice that is an enhancement to the STP design. 1001 C. Reference: https:// supportforums. 4096 Answer: B Explanation: VTP versions 1 and 2 Supports normal VLAN numbers (1-1001). B. VTP. VTP pruning is the best choice. D. 20.com/en/US/tech/tk389/tk689/ technologies_tech_note09186a0080890613. 21 / 121 . easier way to help you pass any IT exams. 4095 F. Instead. Use VTP pruning on the trunk interfaces. 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. the method runs the pruned VLAN on trunks.pruned VLANs on a trunk are still part of the spanning tree.  A.link 40. Configure manual trunk pruning between the two locations. VTP pruning--Avoid this method if the goal is to reduce the number of STP instances. Answer: A Explanation: The "switchport trunk allowed vlan" command will only allow the specified VLANs. C. What is the root cause of the problem? A. Allowing additional VLANs across the trunk introduced a loop in the network. how many VLANs can be used to carry user traffic? A. 1000 B. You would also need to explicitly allow the other working VLANs to this configuration command. VTP-pruned VLANs do not reduce the number of spanning tree port instances. After the command switchport trunk allowed vlan 10. 2048 E. Only VTP version 3 supports extended VLANs (1-4095). C. B. The safer .cisco.The network manager has requested that several new VLANs (VLAN 10.

D. perform these steps: 1. Which protocol does the network engineer configure on both devices to accomplish this? A. VLAN traffic can be removed from the allowed list. 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. This removes specific VLANs from the allowed list. For Integrated Cisco IOS Software based switches. It allows control traffic to pass using the non-default VLAN. VTP pruning C. NDP D. 22 / 121 . All frames within the native VLAN are tagged. B.A network engineer has just deployed a non-Cisco device in the network and wants to get information about it from a connected device. principally wired Ethernet.blogspot. with the defined native VLAN. Control traffic is tagged. Answer: D Explanation: The "vlan dot1q tag native" will tag all untagged frames.What does the command vlan dot1q tag native accomplish when configured under global configuration? A.To restrict the traffic that a trunk carries. so the open standard protocol must be configured. and neighbors on an IEEE 802 local area network.com/2012/11/difference-between-vtp-versions. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s).html 41. LLDP performs functions similar to several proprietary protocols. Which option can be configured to accomplish this? A. The safer . L2P tunneling Answer: A Explanation: When a trunk link is established. allowed VLAN list B. Reference: http://en. However. all of the configured VLANs are allowed to send and receive traffic across the link.wikipedia.org/wiki/ Link_Layer_Discovery_Protocol 43. IRDP B. VACL D. issue the switchport trunk vlan-list interface configuration command. easier way to help you pass any IT exams. including control traffic.  Reference: http://cciememo. Cisco Discovery Protocol is not supported. LLDP C. Note: The allowed VLAN list on both the ends of the trunk link should be the same. capabilities.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. 42. C. such as the Cisco Discovery Protocol (CDP). except when the native VLAN is set to 1. VLANs 1 through 1005 are allowed on each trunk by default.

The port still participates in STP.9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec 23 / 121 . Which spanning-tree feature satisfies this requirement? A.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. switch# show spanning-tree vlan 10 B. switch# show spanning-tree summary E. Spanning-Tree Fast Forward Answer: D Explanation: In order to allow immediate transition of the port into forwarding state.24 Switch-C(config-if-range)# spanning-tree portfast Reference: http://www. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 . For their disaster recovery feature to operate successfully. PortFast immediately transitions the port into STP forwarding mode upon linkup. switch# show spanning-tree bridge C. Spanning-Tree Timers C. Spanning-Tree FastPort D.com/document/11836/how-define-vlans-allowed-trunk. So if the port is to be a part of the loop. switch# show spanning-tree brief D.com/library/content. they require the switchport to enter a forwarding state immediately. switch# show spanning-tree vlan 10 brief Answer: A Explanation: Command Description show spanning-tree Displays information about the spanning-tree state. the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state.  Reference: https://supportforums. easier way to help you pass any IT exams. Example output: SW2#show spanning-tree vlan 10 VLAN0010 Spanning tree enabled protocol rstp Root ID Priority 24586 Address 0014.cisco.For client server failover purposes.aspx? b=CCNP_Studies_Switching&seqNum=36 45.f2d2. Spanning-Tree PortFast E. the port eventually transitions into STP blocking mode. The safer . Rapid Spanning-Tree B.link 44.informit.57d8. enable the STP PortFast feature.Which command does a network engineer use to verify the spanning-tree status for VLAN 10? A.

net/configuring-cisco-vtp/ 47. RPVST+ Answer: C Explanation: Multiple Spanning Tree (MST) extends the IEEE 802.-------.216 P2p Po23 Altn BLK 9 128. MST D.1w RST algorithm to multiple spanning trees.A new network that consists of several switches has been connected together via trunking interfaces. and the configuration revision number. Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database.--. VTP summary advertisements are sent out of all ports with the new domain name. featuring an access Switch A. a switch will have a domain name of NULL and no password. In this setup. If all switches currently have the default VTP domain name "null". RSTP B. easier way to help you pass any IT exams.dionicio. If the switch hears a VTP advertisement it will automatically learn the VTP domain name. Answer: C Explanation: By default. B. on the other hand.Nbr Type ------------------. Figure 3-15 shows a common network design. Which Spanning Tree Protocol should be used to reduce switch resources and managerial burdens that are associated with multiple spanning-tree instances? A. 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.232 P2p Reference: http://www. PVST C. VLANs.A network engineer is setting up a new switched network.  Aging Time 300 sec Interface Role Sts Cost Prio.html 46.cisco. D. 24 / 121 . The safer . The network is expected to grow and add many new VLANs in the future. uses a minimum number of STP instances to match the number of physical topologies present.com/en/US/docs/ios/lanswitch/command/reference/lsw_s2. All other switches with the default domain name become VTP clients. Switches with higher revision numbers does not accept the new domain name. which statement describes what happens when a domain name is configured on one of the switches? A.---. PVRST+ runs STP instances for each VLAN and does not take into consideration the physical topology that might not require many different STP topologies. connected to two Building Distribution submodule Switches D1 and D2. C.--------.Po21 Root FWD 9 128. Contained in a summary advertisement: VTP version Domain name Configuration revision number Time stamp MD5 encryption hash code Reference: https://rowell. PVST+ E. The switch with the non-default domain name restores back to "null" upon reboot. MST.--------------------------.

html 48. To allocate hardware resources for different usages. Answer: A Explanation: You can use SDM templates to configure system resources in the switch to optimize support for specific features.blogspot. SDM templates are used to configure system resources in the switch to optimize support for specific features.Which SDM template disables routing and supports the maximum number of unicast MAC addresses? A. Figure 3-15: VLAN Load Balancing Figure 3-15 illustrates two links and 1000 VLANs.  there are 1000 VLANs. the switch SDM templates prioritize system resources to optimize support for certain features. the switch SDM 25 / 121 . E. 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. You can select a template to provide maximum system usage for some functions.com/2011/05/chapter-03-implementing-spanning- tree_19.Which statement about the use of SDM templates in a Cisco switch is true? A. Reference: http://ciscodocuments. C.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/ release/12. The safer . routing Answer: A Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages. depending on how the switch is used in the network. reducing the need for switch resources. Rather than maintaining 1000 spanning trees.cisco. 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. VLAN B. each switch needs to maintain only two spanning trees. depending on how the switch is used in the network. SDM templates are used to configure ACLs that protect networks and specific hosts from unnecessary or unwanted traffic. default D. D. SDM templates are configured by accessing the switch using the web interface.pdf 49.2_55_s e/configuration/guide/swsdm. and use access template to obtain maximum ACL usage. The 1000 VLANs map to two MST instances. Reference: http://www. access C. B. use the default template to balance resources. 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. easier way to help you pass any IT exams.

Default--The default template gives balance to all functions.com/en/US/docs/switches/lan/catalyst3560/software/ release/12. Entering the value 0 disables the 26 / 121 .cisco. routing Answer: A Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages.dress-table aging-time carded from the MAC address table.pdf 51. The range is from seconds [vlan vlan_id] 0 to 1000000. perform this task: Command Purpose Step 1 switch# configure ter. typically required for a router or aggregator in the center of a network.com/en/US/docs/switches/lan/catalyst3560/software/release/12. the switch SDM templates prioritize system resources to optimize support for certain features. what is the default period of time after which a MAC address ages out and is discarded? A. default C. Reference: http://www.Which SDM template is the most appropriate for a Layer 2 switch that provides connectivity to a large number of clients? A. You can select SDM templates to optimize these features: Access--The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs.cisco. 180 seconds C.pdf 50. easier way to help you pass any IT exams. Default--The default template gives balance to all functions. VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC addresses.  templates prioritize system resources to optimize support for certain features. VLAN B. Routing--The routing template maximizes system resources for IPv4 unicast routing. Reference: http://www.2_55_se/config uration/guide/swsdm. You can select SDM templates to optimize these features: Access--The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs. 600 seconds Answer: C Explanation: To configure the aging time for all MAC addresses. 100 seconds B. It would typically be selected for a Layer 2 switch. 300 seconds D. typically required for a router or aggregator in the center of a network. minal Step 2 switch(config)# mac-ad. Routing--The routing template maximizes system resources for IPv4 unicast routing. It would typically be selected for a Layer 2 switch.2_55_se/config uration/ guide/swsdm. the default is 300 seconds.Specifies the time before an entry ages out and is dis.In a Cisco switch. VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC addresses (clients). The safer .Enters configuration mode. access D.

routing loop B. the aging specification applies to all VLANs.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/M ACAddress. If a VLAN is not specified. cable unplugged C. Usage Guidelines MAC-move notification generates a syslog message whenever a MAC address or host moves between different switch ports.Which option is a possible cause for an errdisabled interface? A. A MAC address or host moves between different switch ports.  MAC aging. mac-address-table notification mac-move [counter [syslog]] no mac-address-table notification mac-move [counter [syslog]] Syntax Description counter (Optional) Specifies the MAC-move counter feature. STP loop guard D. A new MAC address is removed from the content-addressable memory. Reference: http://www. B.html 52.html 53. easier way to help you pass any IT exams.cisco. C. The safer . use the no form of this command. Answer: A Explanation: mac-address-table notification mac-move To enable MAC-move notification. use the mac-address-table notification mac-move com.If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port. D.cisco. when is a syslog message generated? A. syslog (Optional) Specifies the syslogging facility when the MAC-move notification detects the first instance of the MAC move. To disable MAC-move notification. Reference: http://www. A new MAC address is added to the content-addressable memory. More than 64 MAC addresses are added to the content-addressable memory. The reason can be: Duplex mismatch Port channel misconfiguration BPDU guard violation UniDirectional Link Detection (UDLD) condition Late-collision detection Link-flap detection Security violation Port Aggregation Protocol (PAgP) flap Layer 2 Tunneling Protocol (L2TP) guard DHCP snooping rate-limit Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable Address Resolution Protocol (ARP) inspection 27 / 121 .com/en/US/docs/ios/lanswitch/command/reference/lsw_m1.mand in global configuration mode. security violation Answer: D Explanation: There are various reasons for the interface to go into errdisable.

LLDP-MED is an extension to LLDP that operates only between network devices.What is the default value for the errdisable recovery interval in a Cisco switch? A. The safer . B.2_58_se/configur ation/ guide/swlldp. 600 seconds Answer: C Explanation: After you fix the root problem.com/en/US/docs/switches/metro/me3400/software/release/12.cisco. 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.cisco. the timeout feature is disabled.com/en/US/tech/tk389/tk621/ technologies_tech_note09186a00806cd87b. network policy. 100 seconds C.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b. LLDP-MED is an extension to LLDP that operates only between endpoint devices. The errdisable recovery command allows you to choose the type of errors that automatically reenable the ports after a specified amount of time.Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true? A. C.pdf 56.shtml 55.Which statement about LLDP-MED is true? A. 28 / 121 . LLDP-MED is an extension to LLDP that operates between routers that run BGP. LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices. Issue the shutdown command and then the no shutdown interface mode command on the associated interface in order to manually reenable the ports. easier way to help you pass any IT exams. Each device broadcasts periodic advertisements to all of its neighbors. cat6knative#show errdisable recovery ErrDisable Reason Timer Status udld Disabled bpduguard Disabled security-violatio Disabled channel-misconfig Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled mac-limit Disabled unicast-flood Disabled arp-inspection Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Note: The default timeout interval is 300 seconds and. D. B. The show errdisable recovery command shows the default error-disable recovery state for all the possible conditions. Reference: http://www. 300 seconds D. In this case. you must reenable the ports manually. Power over Ethernet. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC. and inventory management. C.cisco. Reference: http://www.  Inline power Reference: http://www. Each device sends periodic advertisements to a central device that builds the network topology. by default. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery. 30 seconds B.shtml 54. the ports are still disabled if you have not configured errdisable recovery on the switch.

The safer , easier way to help you pass any IT exams. 

D. Each device sends periodic advertisements to all IP addresses in its ARP table.
Answer: A
Explanation:
Cisco devices send periodic CDP announcements to the multicast destination address 01-00-0c- cc-cc-cc,
out each connected network interface. These multicast packets may be received by Cisco switches and
other networking devices that support CDP into their connected network interface.
Reference: http://network.spravcesite.net/subdom/network/index.php?id=cdp

57.Which option lists the information that is contained in a Cisco Discovery Protocol advertisement?
A. native VLAN IDs, port-duplex, hardware platform
B. native VLAN IDs, port-duplex, memory errors
C. native VLAN IDs, memory errors, hardware platform
D. port-duplex, hardware platform, memory errors
Answer: A
Explanation:
Type-Length-Value fields (TLVs) are blocks of information embedded in CDP advertisements. Table 21
summarizes the TLV definitions for CDP advertisements. Table 21 Type-Length-Value Definitions for
CDPv2
TLV Definition Device-ID TLV Identifies the device name in the form of a character string. Address TLV
Contains a list of network addresses of both receiving and sending devices. Port-ID TLV Identifies the port
on which the CDP packet is sent. Capabilities TLV Describes the functional capability for the device in the
form of a de- vice type, for example, a switch. Version TLV Contains information about the software
release version on which the device is running. Platform TLV Describes the hardware platform name of
the device, for example, Cisco 4500. IP Network Prefix Contains a list of network prefixes to which the
sending device can TLV forward IP packets. This information is in the form of the interface protocol and
port number, for example, Eth 1/0.
VTP Management Advertises the system's configured VTP management domain name- Domain TLV
string. Used by network operators to verify VTP domain configuration in adjacent network nodes. Native
VLAN TLV Indicates, per interface, the assumed VLAN for untagged packets on the interface. CDP learns
the native VLAN for an interface. This fea- ture is implemented only for interfaces that support the IEEE
802.1Q protocol.
Full/Half Duplex Indicates status (duplex configuration) of CDP broadcast interface. TLV Used by network
operators to diagnose connectivity problems be- tween adjacent network elements.
Reference:
http://www.cisco.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf015.html

58.Which option describes a limitation of LLDP?
A. LLDP cannot provide information about VTP.
B. LLDP does not support TLVs.
C. LLDP can discover only Windows servers.
D. LLDP can discover up to two devices per port.
Answer: A
Explanation:
LLDP Versus Cisco Discovery Protocol TLV Comparison

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The safer , easier way to help you pass any IT exams. 

Function Description LLDP TLV Cisco Discovery Protocol TLV IP network prefix support-Used to send the
net- No IP Network Prefix work prefix and used for ODR TLV Hello piggybacking-Can be used to piggy
back No Protocol Hello TLV hello messages from other protocols Maximum-transmission-unit (MTU) sup-
No MTU TLV port-Specifies the size of the MTU
External port support-Used to identify the card No External Port-ID terminating the fiber in the case of
wave- TLV length-division multiplexing (WDM) VTP management support No VTP Management Domain
TLV Port unidirectional mode-Used in fiber, where No Port UniDirectional the connection may be
unidirectional Mode TLV Management address Management Ad- Management-Address TLV dressTLV
Allows for organizational unique TLVs Yes No
Reference: http://www.cisco.com/en/
US/technologies/tk652/tk701/technologies_white_paper0900aecd804c d46d.html

59.Which statement about the UDLD protocol is true?
A. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of
links and detect unidirectional failures.
B. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity,
capabilities, and neighbors on a local area network.
C. UDLD is a standardized Layer 2 protocol that enables devices to monitor the physical status of links
and detect unidirectional failures.
D. UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity, capabilities,
and neighbors on a local area network.
Answer: A
Explanation:
The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices
and ports that support UDLD. UDLD detects the existence of unidirectional links. When a unidirectional
link is detected, UDLD puts the affected port into the errdisabled state and alerts the user.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/udl d.html

60.Which option lists the modes that are available for configuring UDLD on a Cisco switch?
A. normal and aggressive
B. active and aggressive
C. normal and active
D. normal and passive
E. normal and standby
Answer: A
Explanation:
The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices
and ports that support UDLD. UDLD detects the existence of unidirectional links. When a unidirectional
link is detected, UDLD puts the affected port into the errdisabled state and alerts the user. UDLD can
operate in either normal or aggressive mode.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/udl d.html

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61.What is the default interval at which Cisco devices send Cisco Discovery Protocol advertisements?
A. 30 seconds
B. 60 seconds
C. 120 seconds
D. 300 seconds
Answer: B
Explanation:
: Cisco Discovery Protocol is a Layer 2, media-independent, and network-independent protocol that
networking applications use to learn about nearby, directly connected devices. Cisco Discovery Protocol
is enabled by default. Each device configured for Cisco Discovery Protocol advertises at least one
address at which the device can receive messages and sends periodic advertisements (messages) to the
well-known multicast address 01:00:0C:CC:CC:CC. Devices discover each other by listening at that
address. They also listen to messages to learn when interfaces on other devices are up or go down.
Advertisements contain time-to-live information, which indicates the length of time a receiving device
should hold Cisco Discovery Protocol information before discarding it. Advertisements supported and
configured in Cisco software are sent, by default, every 60 seconds.
Reference: http://www.cisco.com/en/US/docs/ios-xml/ios/ cdp/configuration/15-mt/nm-cdp- discover.html

62.Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true?
A. CDP is enabled by default and can be disabled globally with the command no cdp run.
B. CDP is disabled by default and can be enabled globally with the command cdp enable.
C. CDP is enabled by default and can be disabled globally with the command no cdp enable.
D. CDP is disabled by default and can be enabled globally with the command cdp run.
Answer: A
Explanation:
CDP is enabled on your router by default, which means the Cisco IOS software will receive CDP
information. CDP also is enabled on supported interfaces by default. To disable CDP on an interface, use
the "no cdp enable interface" configuration command. To disable it globally, use the "no cdp run"
command.
Reference:
http://www.cisco.com/en/US/docs/ios/12_2/configfun/command/reference/frf015.html#wp10175

63.Which VTP mode is needed to configure an extended VLAN, when a switch is configured to use VTP
versions 1 or 2?
A. transparent
B. client
C. server
D. Extended VLANs are only supported in version 3 and not in versions 1 or 2.
Answer: D
Explanation:
VTP version 1 and version 2 support VLANs 1 to 1000 only. Extended-range VLANs are supported only in
VTP version 3. If converting from VTP version 3 to VTP version 2, VLANs in the range 1006 to 4094 are
removed from VTP control.
Reference:

31 / 121

Refer to the exhibit.com/en/US/docs/switches/lan/catalyst6500/ios/12. 1 C. If more than one VLAN is needed. 2 D. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 . The hexadecimal values of 0x000 and 0xFFF are reserved. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.1q frame? A.wikipedia. All other values may be used as VLAN identifiers. allowing up to 4.What is the size of the VLAN field inside an 802. easier way to help you pass any IT exams.cisco.  http://www.org/wiki/IEEE_802. 66.1Q 65. 8-bit B.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. 16-bit D. the port should be configured as a trunk port. 12-bit C. The safer .2SX/configuration/guide/vtp. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. html 64. 0 B.094 VLANs Reference: http://en.

easier way to help you pass any IT exams. Exhibit B 33 / 121 . Exhibit A B.  B) C) D) A. The safer .

wikipedia. 67. within the Ethernet source MAC address Answer: A Explanation: Insertion of 802. for Ethernet frames. easier way to help you pass any IT exams. spanning tree D.  C. portfast B.1Q tag in an Ethernet frame 802. Exhibit D Answer: A Explanation: In this case.1Q 69. Exhibit C D. Reference: http://www. The safer . it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en.1q header found? A.cisco. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). ignoring the switchport access VLAN 10 command.Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a 34 / 121 . port-security C. but not automatically disabled when a voice VLAN is removed? A. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports. When you disable voice VLAN. the Port Fast feature is not automatically disabled.1Q does not encapsulate the original frame. so even though Cisco IOS will accept both.In which portion of the frame is the 802. within the Ethernet FCS D. within the Ethernet payload C. The Port Fast feature is automatically enabled when voice VLAN is configured. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. Obviously. Instead.1_22_ea11x/co nfiguration/guide/swvoip. the port has been configured both as a trunk and as a switchport in data vlan 10.org/wiki/IEEE_802. within the Ethernet header B.Which feature is automatically enabled when a voice VLAN is configured. the port will actually be used as a trunk.com/en/US/docs/switches/lan/catalyst2950/software/ release/12.html 68. a port can not be both.

port-security C. there are occasions when VTP can create unnecessary traffic. Update the VTP revision number. By default.php 70.1Q 35 / 121 . All switches in the network receive all broadcasts.com/c/en/us/ support/docs/lan-switching/vtp/1055821. VLANs 2-4094 Answer: C Explanation: VTP pruning should only be enabled on VTP servers. The safer . but VLAN 1 can't be pruned because it's an administrative VLAN. The network engineer found that the engineering VLAN is missing from the database. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server. VLANs 1-4094 C. even in situations in which few users are connected in that VLAN. C.1q. you will need to enable 802.1q.Refer to the exhibit. Which action resolves this problem? A. Disable VTP pruning and disable 802. Answer: C Explanation: Only VTP servers can add new VLANs to the switched network. Enable VTP pruning and disable 802.orbit-computer-solutions. all the clients in the VTP domain will automatically enable VTP pruning. B. Reference: http://www. VLANs 1-1001 B. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. Change VTP mode to server and enable 802.1q. Reference: http://www. However.com/VTP-Pruning. Then.Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A. Both VTP versions 1 and 2 supports pruning.  switch? A. The users in an engineering department that connect to the same access switch cannot access the network.html#vtp_pruning 71. VLANs 2-1001 D. storm control D. VTP pruning B.cisco. easier way to help you pass any IT exams. bpdguard Answer: A Explanation: VTP ensures that all switches in the VTP domain are aware of all VLANs. VLANs 2 1001 are pruning eligible. D. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic.

The network switches for two companies have been connected and manually configured for the required VLANs. 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.Refer to the exhibit. The VTP domain names do match and they are both VTP servers so there are no issues there.A network engineer must implement Ethernet links that are capable of transporting frames and IP 36 / 121 . The safer . 72. Which action resolves this problem? A. Enable the company B switch with the vtp mode server command. Manually force trunking with switchport mode trunk on both switches. Disable DTP and document the VTP domain mismatch. Delete vlan. C. easier way to help you pass any IT exams.  trunking to pass this new VLAN along to the other switches. but users in company A are not able to access network resources in company B when DTP is enabled.dat and ensure that the switch with lowest MAC address is the VTP server. 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. 73. D. B.

Cisco Discovery Protocol version 1 and version 2 carry native VLAN information.Refer to the exhibit. only 802. but version 1 does not. VLAN ID 1 should not be used for management traffic because its unsafe. There are 2 different methods for trunking. Cisco Discovery Protocol version 3 carries native VLAN information. Consider that this is a multivendor environment. you must ensure that you choose a common native VLAN for each port in the trunk. spanning-tree bpdu-filter is enabled. dot1q VLAN trunking D.1Q trunks. Which Cisco IOS switching feature can be used to achieve the task? A. Which option is the cause of the spanning-tree error? A. C. Link Aggregation Protocol at the access layer C.  traffic for different broadcast domains that are mutually isolated. The safer . 802. but versions 1 and 2 do not. 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. 74. B. D.ciscopress. but version 2 does not. Failure to do this causes Cisco switches to 37 / 121 . B. A multilayer switch has been configured to send and receive encapsulated and tagged frames.com/articles/article. Of these. easier way to help you pass any IT exams. If you have a native VLAN mismatch.1q trunks are on both sides. but 1 (the default native VLAN) on the other switch. Cisco Discovery Protocol version 1 carries native VLAN information. D. Answer: C Explanation: Explanation/Reference: Here we see that the native VLAN has been configured as 2013 on one switch. 802.1Q and ISL. VLAN spanning-tree in SW-2 is configured. Answer: A Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches.Which statement about using native VLANs to carry untagged frames is true? A.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. VLAN 2013 on the multilayer switch is configured as the native VLAN. Reference: http://www. both with native VLAN mismatch. you will see CDP error messages on the console output. C. Cisco Discovery Protocol version 2 carries native VLAN information.asp?p=29803&seqNum=3 75. If you use 802. PPP encapsulation with a virtual template B.

you must configure all switches in the service-provider network to be able to process maximum frames by increasing the switch 38 / 121 .What is required for a LAN switch to support 802.html 77.A network engineer must improve bandwidth and resource utilization on the switches by stopping the inefficient flooding of frames on trunk ports where the frames are not needed. Manually prune default VLAN with switchport trunk allowed vlans remove. spanning tree blocks local native VLAN traffic and the remote switch native VLAN traffic on the trunk. Which Cisco IOS feature can be used to achieve this task? A. The "trunk pruning vlan 1" option is not a valid command. easier way to help you pass any IT exams.1q Q-in-Q encapsulation? A. B. which stops the inefficient flooding of frames where they are not needed.  partially shut down the trunk port because having mismatched native VLANs can result in spanning-tree loops. The safer . Native VLAN mismatches are detected via spanning tree and Cisco Discovery Protocol (CDP). Support 1547 MTU only Answer: B Explanation: The default system MTU for traffic on Catalyst switches is 1500 bytes.com/library/content. VLAN access-map Answer: A Explanation: Cisco advocates the benefits of pruning VLANs in order to reduce unnecessary frame flooding. Support less than 1500 MTU B. D.com/c/en/us/support/docs/switches/catalyst-6500-series.informit. Reference: http://www. Because the 802. switchport trunk allowed VLAN D.Which action allows a network engineer to limit a default VLAN from being propagated across all trunks? A.aspx? b=CCNP_Studies_Switching&seqNum=25 76. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning. Use trunk pruning vlan 1. not via DTP messages.switches/24330- 185.cisco. Support 1522 layer 3 IP and IPX packet D. The "vtp pruning" command prunes VLANs automatically. Reference: http://www. Support 1504 MTU or higher C. C. VTP pruning B. however. Upgrade to VTP version 3 for advanced feature set support. Enable VTP pruning on the VTP server. access list C. Answer: C Explanation: Manaully pruning the default VLAN (1) can only be done with the "switchport trunk allowed vlans remove" command.1Q tunneling (Q- in-Q) feature increases the frame size by 4 bytes when the extra tag is added. If spanning tree detects a native VLAN mismatch. the trunk still remains up for other VLANs. 78.

LACP traffic goes through G0/4 because it is the highest interface ID. except the native VLAN. The port priority can be configured automatically or through the CLI. PAgP modes are active. B. the lower the priority. Configure LACP port-priority on G0/1 to 65535. desirable. 80. The safer . C. Reference: http://www. 4-bytes except the native VLAN B. G0/2. Only the combinations active-desirable. 8-bytes including native VLAN Answer: A Explanation: In 802. and on. desirable. G0/3. the other two bytes for tag control information (TCI). C.html#wp1081491 81. Which action allows interface G0/1 to always actively forward traffic in the port-channel? A.cisco. Answer: B Explanation: A LACP port priority is configured on each port using LACP.Which statement about the use of PAgP link aggregation on a Cisco switch that is running Cisco IOS Software is true? A. PAgP modes are off.1_13_ea1/confi guration/ guide/swtunnel. and on. and on-on allow the formation of a channel.  system MTU size to at least 1504 bytes. all VLAN packets are tagged on the trunk link.desirable. desirable-desirable.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1Q trunking.A network engineer configured a fault-tolerance link on Gigabit Ethernet links G0/1.cisco. PAgP modes are active. desirable. The port priority determines which ports should be put in standby mode when there is a hardware limitation that prevents all compatible ports from aggregating. and G0/4 between two switches using Ethernet port-channel. and on-on allow the formation of a channel. Only the combinations active-active. desirable. How many bytes are added to each frame as a result of the configuration? A. easier way to help you pass any IT exams. Only the combinations auto-desirable. http://www. and on-on allow the formation of a channel. Configure G0/1 as half duplex and G0/2 as full duplex. 8-bytes except the native VLAN C. The valid range is from 1 to 65535. Two bytes are used for the tag protocol identifier (TPID).com/c/en/us/td/docs/ios/12_2sb/feature/guide/gigeth. LACP uses the port priority with the port number to form the port identifier. The higher the number. auto.Refer to the exhibit. B.html 79. and on. Configure LACP port-priority on G0/1 to 1. The default is 32768. desirable-desirable. 4-bytes including native VLAN D. A VLAN tag adds 4 bytes to the frame. D. 39 / 121 .

PAgP modes are off. on: PAgP will not run. off: PAgP will not run. auto.desirable. desirable. desirable.switches/21041- 131. The PAgP modes are explained below. active. The channel is forced to come up. and on-on will allow a channel to be formed. easier way to help you pass any IT exams. Which EtherChannel negotiation protocol is configured on the interface f0/13 f0/15? 40 / 121 . The formation of a channel is desired and ini.html 82. The channel is forced to remain down. however. and on-on will allow a channel to be formed. 1. 4. auto: PAgP is running passively. The safer .desirable. Reference: http://www.  D.Refer to the exhibit. Only the combinations of auto-desirable. and on. desirable-desirable. it is not initiated.com/c/en/us/support/docs/switches/catalyst-2900-xl-series. the device on the other side must have PAgP set to on. and on-on allow the formation of a channel. desirable.cisco.tiated. desirable: PAgP is running actively. Only the combinations auto-desirable. desirable. Answer: A Explanation: PAgP modes are off. If a device on one side of the channel does not support PAgP. Only the combinations auto-auto. The formation of a channel is desired. such as a router. 3. and on. 2.

it is not initiated. The peer (in active state) initiates negotiation (when it sends out an LACP packet) which we receive and answer. 3. which is operating in desirable mode. . This is similar to the desir.In other words. To increase bandwidth. Link Combination Control Protocol B. Only the combinations auto-desirable. auto.Refer to the exhibit. and on-on will allow a channel to be formed. traffic is still slow. We do not send or understand the LACP packet. Port Combination Protocol D. the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch. 83. The channel is forced to remain down. 1. eventually to form the aggregation channel with the peer. The Link Aggregate Control Protocol (LACP) trunking supports four modes of operation: On: The link aggregation is forced to be formed without any LACP negotiation . the switch neither sends the LACP packet nor processes any inbound LACP packet. The link aggregate is formed if the other end runs in LACP active or passive mode. The safer . Port Aggregation Protocol C. auto: PAgP is running passively.desirable. desirable: PAgP is running actively. and on. Passive: The switch does not initiate the channel but does understand inbound LACP packets. 4. Users of PC-1 experience slow connection when a webpage is requested from the server.tiated. easier way to help you pass any IT exams. Active: We can form an aggregate link and initiate the negotiation. The formation of a channel is desired and ini. desirable. off: PAgP will not run. desirable. which is only a PAgP mode.able mode of PAgP. 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# However. In this example. Disable EtherChannel load balancing. 2. This is similar to the on state for PAgP. B. The formation of a channel is desired. The channel is forced to come up. This is similar to the auto mode in PAgP. fa0/14. however. Link Aggregation Control Protocol Answer: B Explanation: PAgP modes are off. This is similar to the off state for PAgP.  A. Which action can the engineer take to resolve this issue? A. on: PAgP will not run. Off: The link aggregation is not formed. Upgrade the switch IOS to IP services image. and fa0/15 are all in Port Channel 12. we see that fa 0/13. 41 / 121 .

and on. PAgP changes the port speed and duplex for all ports in the bundle. PAgP packets are sent between EtherChannelcapable ports in order to negotiate the formation of a channel. 42 / 121 . all ports in the bundle are modified to match that VLAN. since the web server has two NICs traffic will be load balanced across both MAC addresses. PAgP changes the port speed and duplex for all ports in the bundle. The load balancing method should be changed to destination MAC. B. auto.cisco. Contact Cisco TAC to report a bug on the switch. Answer: A Explanation: PAgP aids in the automatic creation of EtherChannel links. PAgP does not change the port speed and duplex for all ports in the bundle until the switch is rebooted. PAgP changes the port speed but not the duplex for all ports in the bundle.  C. Some restrictions are deliberately introduced into PAgP. C. and on-on allow the formation of a channel. desirable.com/c/ en/us/support/docs/lan-switching/etherchannel/12023-4. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. The device on the other side must have PAgP set to on if a device on one side of the channel does not support PAgP. D. The restrictions are: PAgP does not form a bundle on ports that are configured for dynamic VLANs. When a bundle already exists and a VLAN of a port is modified. Which statement describes what happens to all ports in the bundle? A.desirable. D. 84. Answer: C Explanation: Since this traffic is coming from PC-1. such as a router. the source MAC address will always be that of PC-1. PAgP does not group ports that operate at different speeds or port duplex. PAgP requires that all ports in the channel belong to the same VLAN or are configured as trunk ports. The safer . Reference: http:// www.Which statement about using EtherChannel on Cisco IOS switches is true? A. PAgP modes are off. and since the load balancing method is source MAC. traffic will only be using one of the port channel links. Only the combinations auto-desirable. PAgP drops the ports that do not match the configuration. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 16 Gbps only for Gigabit EtherChannel. D. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel.A network engineer changed the port speed and duplex setting of an existing EtherChannel bundle that uses the PAgP protocol. easier way to help you pass any IT exams.html 85. desirable. Change the load-balance method to dst-mac. If speed and duplex change when a bundle exists. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 10 Gbps only for Gigabit EtherChannel. C. B.

  Answer: A Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link. B. Physical port Fa0/13. Logical port Fa0/13. and all must be configured as either Layer 2 or Layer 3 interfaces. D.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.Refer to the exhibit. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol. Fa0/14. Fa0/14. Answer: A Explanation: These three ports show that they are in Port Channel 1. 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. and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol. The safer . Reference: http://www. and the (SU) means they are in use and operating at layer 2. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. Logical port Fa0/13. which is a standards based 43 / 121 . Physical port Fa0/13. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol. Fa0/14.cisco. All interfaces in each EtherChannel must be the same speed. Fa0/14. C.html 86. easier way to help you pass any IT exams. The protocol used for this port channel shows as LACP. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol. Which statement about switch S1 is true? A.

87.1d to communicate.1d understands RSTP BPDUs because they are the same version. easier way to help you pass any IT exams. it responds with an 802. which is Cisco proprietary. MST establishes and maintains IST.cisco. and CST spanning trees: An IST is the spanning tree that runs in an MST region. 802.com/c/en/us/td/ docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/spantree. When a port is initialized. it responds with a 802. as opposed to PAgP. Answer: A Explanation: For backward compatibility with 802. but when a RSTP switch receives a 802.1d BPDU and eventually the two switches run 802.1D BPDU after the port migration-delay timer has expired. If the switch receives an 802. it does not respond with a 802. 4 Answer: C Explanation: Unlike other spanning tree protocols. All of the other span. but when a RSTP switch receives a 802. Reference: http://www. Within each MST region. 802. In the case for this question. it assumes that it is connected to an 802. C.html 88. known as the IST. but when a RSTP switch receives a 802. but when a RSTP switch receives an 802. 802. Because the MST BPDU 44 / 121 .1d does not understand RSTP BPDUs because they are different versions. which are encapsu. and RSTP BPDUs are sent. D.ning tree instance information is contained in MSTP records (M-records).1d does not understand RSTP BPDUs because they are different versions. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent).1D BPDUs.  protocol. CIST.1d BPDU. in which all the spanning tree instances are independent. 3 D. However.1D switches.1d BPDU. what is the total number of spanning-tree instances running on the switch? A. RSTP selectively sends 802. if the RSTP switch is using 802. it restarts the timer and starts using RSTP BPDUs on that port.1d understands RSTP BPDUs because they are the same version. for a total of 3 instances.1d BPDU? A. 1 B.1D configuration BPDUs and TCN BPDUs on a per-port basis.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired.1d BPDU. All other MST instances are numbered from 1 to 4094.1d BPDU and eventually the two switches run 802.1d to communicate.lated within MST BPDUs. The IST is the only spanning tree instance that sends and receives BPDUs. B. Instance 0 is a special instance for a region. 802. MST maintains multiple spanning tree instances. there will be the 2 defined MST instances.1d BPDU. While this timer is active. the switch processes all BPDUs received on that port and ignores the protocol type.1d to communicate. 2 C. it does not respond with a 802.1D switch and starts using only 802. and the special 0 instance.When two MST instances (MST 1 and MST 2) are created on a switch.1d BPDU. The safer .What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802.1d BPDU and eventually the two switches run 802.

  carries information for all instances. Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. The CST interconnects the MST regions and single spanning trees. easier way to help you pass any IT exams.html 89. 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.2SX/configuration/ guide/book/spantree. but each MST in. 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. STP considers port priority when selecting a LAN port to put into the forwarding state. and so forth. The possible priority range is 0 through 240 (default 128).com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. MST instance 1 in region A is independent of MST instance 1 in region B. An MST instance is local to the region. for example.stance has its own topology parameters. Reference: http://www. such as root bridge ID.Refer to the exhibit. Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. all VLANs are assigned to the IST. root path cost. By default. B. 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. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16.cantly reduced. If all LAN ports have the same priority value. A CIST is a collection of the ISTs in each MST region. f1/0 and f1/1 have the same end-to-end path cost to the designated bridge. even if regions A and B are interconnected. The safer . A lower path 45 / 121 . All MST instances within the same region share the same protocol timers. C. Answer: C Explanation: If a loop occurs. configurable in increments of 16.cisco. the number of BPDUs that need to be processed to support multiple spanning tree instances is signifi. D.

C. Answer: D Explanation: For priority.19 and all ports are forwarding.com/en/US/docs/switches/lan/catalyst2950/software/release/12. the default is 32768.html#wp1105354 90.1_9_ea1/config uration/ guide/swstp. B. 46 / 121 .  cost represents higher-speed transmission and is preferred. The bridge priority is 128. the range is 0 to 61440 in increments of 4096. Why would the switch be considered as a root bridge? A.com/ en/US/docs/switches/lan/catalyst2950/software/release/12. The switch priority for VLAN 1 and the macro specifies "This Bridge is the root".Refer to the exhibit. Reference: http://www.html#wp1020666 91. The switch priority value is zero. it has the lowest priority value for VLAN 1.Refer to the exhibit. The safer . easier way to help you pass any IT exams.1_9_ea1/config uration/guide/ swstp. the more likely the switch will be chosen as the root switch. The bridge priority is 1 and all ports are forwarding.cisco.cisco. Reference: http://www. The lower the number. D.

Configure spanning-tree portfast. which represents the best path to the Root Bridge. easier way to help you pass any IT exams. C. interface f0/15 D. Reference: https:// community.  All ports are members of VLAN 10. Configure port to duplex full and speed 1000. With the initial version of spanning tree. each port goes through 4 states to ensure that there are no physical loops in the layer 2 broadcast domain. Configure no switchport. Total Path Cost to root . B. so it will be the root port. Considering the default cost of upstream bridges to the root bridge is equal. Configure port duplex and speed to auto negotiation. interface f0/21 Answer: D Explanation: Root Port election on each bridge Each (non-Root) bridge has exactly one Root Port.A network engineer is trying to deploy a PC on a network.lowest prevails (local Root Port cost added o upon receipt of Configuration BPDUs on that port. Answer: C Explanation: When first powered on.A port that would cause a switching loop. D. which option will be the new root port for VLAN 10? A. from the direction of Root Bridge) Connected Bridge ID .lowest prevails o Local Port ID lowest prevails o In this case. it takes 30 to 60 seconds for the PC to see any activity on the network interface card.com/extreme/topics/802_1d_spanning_tree_election_rules 92. Blocking . These steps are outlined as follows. interface f0/14 C. 1. fa0/21 has the lowest cost. interface f0/13 B.lowest prevails o Connected Port ID (Port Priority + Port#) . Which Layer 2 enhancement can be used to eliminate this delay? A. The engineer observes that when the PC is connected to the network. this process could take from 30-60 seconds. The safer . 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 47 / 121 .extremenetworks.

the "Spanning-tree portfast bpdufilter default" command specifies that if a BPDU is received on that port. unless two or more ports of the root bridge are connected together. If an interface is enabled for portfast receives BDPU. 2.shtml 95. Reference: http://www. D. the port goes into the spanning-tree inconsistent state. In this way. The safer . Normally. normal operation. If an interface is enabled for portfast receives BDPU. learning. and forwarding states. If an interface is enabled for portfast receives BDPU. No traffic is forwarded across this port. The port goes into loop-inconsistent state and stops forwarding traffic.The switch processes BPDUs and awaits possible new information that would cause it to return to the blocking state. the root guard enforces the position of the root bridge.Which statement describes what happens when a port configured with root guard receives a superior BPDU? A. 3. B. C. and forwarding states. Reference: http://net. BPDU data is still received in blocking state. STP still monitors incoming BPDUs that would indicate it should return to the blocking state to prevent a loop. Listening . Switchone(config) # Spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true? A. C. D. and forwarding states should be used. root guard moves this port to a root-inconsistent STP state.A network engineer configured an Ethernet switch using these commands. the port is shut down immediately. 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. B. If an interface is enabled for portfast receives BDPU. Answer: D Explanation: The root guard ensures that the port on which root guard is enabled is the designated port. If the bridge receives superior STP Bridge Protocol Data Units (BPDUs) on a root guard-enabled port.us/Home/ethernet-and-ip/spanning-tree-protocol 93. then the default action of STP of listening. bypassing the listening and learning states. STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately. The port goes into errdisabled state and stops forwarding traffic. However.  may transition to the forwarding state. Answer: A Explanation: STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately. learning. root bridge ports are all designated ports. The port goes into BPDU-inconsistent state and stops forwarding traffic. Forwarding . the port does not go through the spanning-tree listening.cisco. bypassing the listening and learning states. This root-inconsistent state is effectively equal to a listening state. 94.com/en/US/tech/tk389/tk621/ technologies_tech_note09186a00800ae96b. The port goes into root-inconsistent state and stops forwarding traffic. easier way to help you pass any IT exams.cmed.A port receiving and sending data.Which statement about restrictions for multichassis LACP is true? 48 / 121 . Learning . the port goes through the spanning-tree listening.

It does not support 1Gb links. Answer: C Explanation: When configuring mLACP for Server Access.2SX/configuration/guide/mla cp_server_support. 4 B. D.html 97. The safer .cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12. and both virtual switch members continue to forward traffic independently. No more than 100 VLANs can be active on a switch configured as a PoA. Reference: http://www. Reference: http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. VSS mode does not support the mLACP for server access feature. B. The DHD system priority must be lower (higher numerically) than the PoA system priority. and only the new active virtual switch continues to forward traffic. The VSS transitions to the dual active recovery mode. It is not available in VSS. VSLs can be configured with up to eight links between the two switches across any combination of line cards or 49 / 121 . easier way to help you pass any IT exams. mLACP does not support half-duplex links.  A. 12 Answer: C Explanation: The VSS is made up of the following: Virtual switch members: Cisco Catalyst 6500 Series Switches (up to two switches with initial release) deployed with the Virtual Switching Supervisor 720 10GE Virtual switch link (VSL): 10 Gigabit Ethernet connections (up to eight using EtherChannel) between the virtual switch members. Answer: D Explanation: Q.What is the maximum number of 10 Gigabit Ethernet connections that can be utilized in an EtherChannel for the virtual switch link? A. It is available only on a Cisco Catalyst 6500 Series chassis. Both virtual switch members cease to forward traffic. mLACP does not support multiple neighbors. The virtual switch members reload. follow these guidelines and restrictions: PFC3A mode does not support the mLACP for server access feature. C. Converting a port channel to mLACP can cause a service disruption. B. What happens if all VSL connections between the virtual switch members are lost? A.Which statement describes what happens if all VSL connections between the virtual switch members are lost? A. Converting a port channel to mLACP can cause a service disruption.html 96. The VSS transitions to the dual active recovery mode. 6 C. 8 D. C. D.

4. Answer: B Explanation: In the dual active recovery mode. easier way to help you pass any IT exams. The VSS detects which system was last in active state and shuts down the other switch.cisco. E. D. Disable Option 82 for DHCP data insertion. 50 / 121 . By default. Define and configure the DHCP server. Reference: http://www. D. A DHCP snooping database agent should be configured.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. DHCP snooping is inactive on all VLANs.html 99. The dual active state is detected rapidly (subsecond) by any of the following three methods: Enhancement to PAgP used in MEC with connecting Cisco switches L3 Bidirectional Forwarding Detection (BFD) configuration on a directly connected link (besides VSL) between virtual switch members or through an L2 link through an access layer switch L2 Fast-Hello Dual-Active Detection configuration on a directly connected link (besides VSL) between virtual switch members (supported with 12.cisco. Enable DHCP snooping for all VLANs that are associated with the switch. Apply ip dhcp snooping trust on all interfaces with dynamic addresses. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. By default.2(33)SXI) In the dual active recovery mode. B. Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting. C. The safer . the VSS will transition to the dual active recovery mode. the trust state of all interfaces is untrusted. All interfaces are shut down in the formerly active virtual switch member. The switch continues to forward traffic out all links and enables spanning tree on VSL link and all other links to prevent loops. C. The new active virtual switch continues to forward traffic on all links. The new active virtual switch continues to forward traffic on all links. Enable DHCP snooping on at least one VLAN. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. 2.html 98. 3. This step ensures that database entries are restored after a restart or switchover. Reference: http://www. Answer: A Explanation: Minimum DHCP Snooping Configuration The minimum configuration steps for the DHCP snooping feature are as follows: 1.  supervisor ports to provide a high level of redundancy.com/en/US/prod/collateral/switches/ps5718/ps9336/ prod_qas0900aecd806ed74 b.Which statement describes what happens when a switch enters dual active recovery mode? A. B. If for some rare reason all VSL connections are lost between the virtual switch members leaving both the virtual switch members up. Configure the DHCP snooping database agent.A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database. but the new active virtual switch forwards traffic on all links. Ensure that DHCP server is connected through a trusted interface. What is the solution to avoid the snooping database from being rebuilt after every device reboot? A. The switch shuts down and waits for the VSL link to be restored before sending traffic.

Reference: http://www. authentication C. and reporting. which would be specific to the individual user rights. You can use accounting to see what users do once they are authenticated and authorized.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/sno odhcp. For more protection against malicious attacks.html#wp1090479 100. B. you could get a log of when users logged in and when they logged out. The safer . auditing Answer: A Explanation: AAA consists of the following three elements: Authentication: Identifies users by login and password using challenge and response methodology before the user even gains access to the network. Depending on your security options. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable. In the Cisco IOS. Enable DHCP snooping globally.  5.A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping. Trust the interface that is connected to the server with the ip dhcp snooping trust command. Authorization: After initial authentication.Which command creates a login authentication method named "login" that will primarily use RADIUS and fail over to the local user database? A. The feature is not active until you complete this step. Disable DHCP snooping information option.Which portion of AAA looks at what a user has access to? A. C. (config)# aaa authentication login default local radius D.techrepublic. It provides a way of collecting security information that you can use for billing. 51 / 121 . (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. (config)# aaa authentication login default radius local B. (config)# aaa authentication login login radius local C. auditing. it can also support encryption. Reference: http://www. RADIUS or TACACS+ security servers perform authorization for specific privileges by defining attribute-value (AV) pairs. For example. accounting D.com/blog/data-center/what-is-aaa-and-how-do-you- configure-it-in-thecisco-ios/ 101. you can define AAA authorization with a named list or authorization method.cisco. Which solution ensures that the server maintains network reachability in the future? A. 102. authorization looks at what that authenticated user has access to do. Configure a static DHCP snooping binding entry on the switch. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. easier way to help you pass any IT exams. with accounting. authorization B. Accounting: The last "A" is for accounting. It also lists radius first then local.

DHCP snooping and IP Source Guard have been configured on a switch that connects to several client workstations. B. The interface that is connected to the workstation in question will be put into the errdisabled state. C. Traffic will pass accordingly after the new IP address is populated into the binding database. D. the switch forwards the packet only if it is valid. Reference: http://www.2_55_se/configuration/guide/scg3750/ swdynarp. the DHCP snooping binding database. C. On untrusted interfaces. It intercepts. Disable VTP and manually assign VLANs. D. Reference: http://www. Ensure all switches are configured as VTP server mode. Answer: B Explanation: Dynamic ARP inspection is a security feature that validates ARP packets in a network. Enable VTP version 3.address command. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed.asp?p=29803&seqNum=6 104. The safer . Answer: C Explanation: You must configure VTP to transparent mode before you can create a private VLAN. Which statement describes the outcome of this scenario? A. Private VLANs also carry TLVs that are not known to all types of Cisco switches.html 103.A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. Configure VTP Transparent Mode. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify mac. Private VLANs are configured in the context of a single switch and cannot have members on other switches. To ensure network reachability to the server. The packets originating from the workstation are assumed to be spoofed and will be discarded. 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. This capability protects the network from certain man-in-the-middle attacks. the switch forwards the packet without any checks.cisco.ciscopress. configure a static DHCP snooping binding entry on the switch.com/articles/ article. and discards ARP packets with invalid IP-to-MAC address bindings.  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 updating the local ARP cache or before forwarding the packet to the appropriate destination. Packets from the workstation will be rate limited according to the default values set on the switch. Answer: D Explanation: The IP source binding table has bindings that are learned by DHCP snooping or are manually configured 52 / 121 . easier way to help you pass any IT exams. If the ARP packet is received on a trusted interface. logs. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Which configuration must be made before the private VLAN is configured? A. B. The IP address of one of the workstations does not match any entries found in the DHCP binding database.com/c/ en/us/td/docs/switches/lan/catalyst3750/software/release/12.

D.html#ipsourceguard 105. Which option is the cause of the problem? A. The switch is configured for sdm prefer routing as the switched database management template.cisco. Which option is the cause of this issue? A. The switch uses the IP source binding table only when IP source guard is enabled. there are two caveats: The DHCP server must support option 82. However. Reference: http://www.com/c/en/us/support/docs/switches/catalyst-3750-series. Static DHCP bindings are not configured on the switch. If there is no match. C.com/c/en/us/td/docs/switches/lan/ catalyst3550/software/release/12- 2_25_see/configuration/guide/3550SCG/ swdhcp82. 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. Layer 2 interfaces by filtering 53 / 121 . IP traffic is filtered based on the source IP address. When IP source guard is enabled with this option.security interface configuration command. An entry in this table has an IP address. The MAC address in the DHCP packet is not learned as a secure address. even if they are not utilized for dynamic address allocation. or with source IP and MAC address filtering. The DHCP client interfaces have storm control configured. The interfaces are configured as Layer 3 using the no switchport command.cisco. The safer . B. When IP source guard is enabled with this option.A switch is added into the production network to increase port capacity. using the ip verify source port. IP traffic is filtered based on the source IP and MAC addresses. the packets are assumed to be spoofed and will be discarded. The configured SVIs on the switch have been removed for the associated interfaces. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode. B. its associated MAC address. easier way to help you pass any IT exams.A DHCP configured router is connected directly to a switch that has been provisioned with DHCP snooping.html#wp1069615 106. C.switches/72846- layer2-secftrs-catl3fixed. and its associated VLAN number. A network engineer is configuring the switch for DHCP snooping and IP Source Guard. E. Answer: B Explanation: IP source guard is a security feature that restricts IP traffic on nonrouted. You can configure IP source guard with source IP address filtering. DHCP snooping must be enabled on all VLANs. but is unable to configure ip verify source under several of the interfaces. 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. or the client is not assigned an IP address. clients are not receiving an IP address via the DHCP server. Answer: A Explanation: When you enable both IP Source Guard and Port Security. Reference: http://www. The DHCP server does not support information option 82. D. The switch forwards traffic only when the source IP and MAC addresses match an entry in the IP source binding table. The local DHCP server is disabled prior to enabling IP Source Guard.  (static IP source bindings). The MAC address of the DHCP client is learned as a secure address only when the switch receives non-DHCP data traffic.

E. easier way to help you pass any IT exams. D. (Optional) For level-low.) A.00 to 100. the network team has been overwhelmed with port reset requests.00. multicast. C. the switch blocks all IP traffic received on the interface. multicast. it is set to the rising suppression level. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold. In which three ways does this command impact the traffic? (Choose three. B. its associated MAC address. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. Reference: http:// www. cast} level {level [lev-The keywords have these meanings: el-low] | pps pps [pps-low]} For level.00.cast | multicast | unifault.  traffic based on the DHCP snooping binding database and on manually configured IP source bindings. The safer . In this case. If you do not configure a falling suppression level. The range is 0.Configure broadcast. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic. F.com/c/en/us/td/docs/switches/lan/catalyst3550/ software/release/12.2_25_see/configuration/ guide/3550SCG/swtrafc. Only broadcast traffic is limited by this particular storm control configuration. An entry in this table has an IP address.After port security is deployed throughout an enterprise campus. The switch resumes forwarding broadcasts when they are below 65% of bandwidth.The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server. After IP source guard is enabled on an interface. or unicast storm control. including access and trunk ports. The switch drops broadcasts when they reach 75% of bandwidth. Answer: CDF Explanation: storm-control {broad.cisco. They decide to configure the network to automate the process of re-enabling user ports. the broadcast keyword was used so only broadcast traffic is limited. Reference: http://www. The range is 0. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth. You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. or unicast traffic as a percentage (up to two decimal places) of the bandwidth. The port forwards traffic when traffic drops below this level.html 108. and its associated VLAN number. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). except for DHCP packets allowed by DHCP snooping. IP source guard is supported only on Layer 2 ports. The switch uses the IP source binding table only when IP source guard is enabled. The port blocks traffic when the rising threshold is reached. specify the rising threshold level for broadcast. storm control is disabled. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor.html#wp1069615 107.cisco. This value must be less than or equal to the rising suppression value. A port access control list (ACL) is applied to the interface. You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering. By de.00 to 100. 54 / 121 .com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12- 2_25_see/configuration/guide/3550SCG/ swdhcp82.

switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. 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 Non-static Address Table: Destination Address Address Type VLAN Destination Port ------------------. SDM routing C. switch(config)# switchport port-security aging type inactivity E. switch# show mac address-table B.-----------. switch(config)# errdisable recovery cause psecure-violation C.0de0.1545 Dynamic 2 FastEthernet0/5 110. switch# show ip arp inspection E.7b00. Which two commands help trace this PC when the MAC address is known? (Choose two.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec. switch# show mac address-table address <mac address> Answer: AE Explanation: These two commands will show the MAC address table. integrated routing and bridging 55 / 121 . you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port.e289 Dynamic 1 FastEthernet0/1 0010. including the switch port that the particular host is using. Cisco IOS parser D. switch# show port-security C. This is the default mode.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. switch(config)# switchport port-security protect D. switch(config)# errdisable recovery interval 180 B.cisco.  Which command accomplishes this task? A.7b00.1540 Dynamic 2 FastEthernet0/5 0010. If a port is in per-VLAN errdisable mode.pdf 109. switch# show ip verify source D.---. Reference: http://www. Which option decreases consumption of bandwidth used by broadcast traffic? A. easier way to help you pass any IT exams. storm control B.While troubleshooting a network outage. The safer .-------------------0010. 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. 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.) A.

IP mobile C. and ARAP connections? A.  E. Storm control is configured for the switch as a whole but operates on a per-port basis. aaa authorization D.ht ml 112. aaa new-model B. storm control is disabled. Method lists are specific to the authorization type requested: Auth-proxy--Applies specific security policies on a per-user basis. or users issuing a denial-of-service attack can cause a storm.Which command globally enables AAA on a device? A. SLIP. or all methods defined are exhausted. A LAN storm occurs when packets flood the LAN. aaa authentication C. AAA features are not available for use until you enable AAA globally by issuing the aaa new-model command. For detailed information on the authentication proxy feature. thus ensuring a backup system in case the initial method fails.Which AAA Authorization type includes PPP. in sequence. or multicast packets. refer to the chapter "Configuring Authentication Proxy" in the "Traffic 56 / 121 . mistakes in network configuration. aaa accounting Answer: A Explanation: To configure AAA authentication. Dynamic ARP Inspection Answer: A Explanation: Storm control prevents traffic on a LAN from being disrupted by a broadcast. The safer . A method list is simply a named list describing the authorization methods to be queried (such as RADIUS or TACACS+). Method lists enable you to designate one or more security protocols to be used for authorization. or unicast storm on a port. Reference: http://www. By default.cisco. multicast. enable AAA by using the aaa new-model global configuration command. Cisco IOS software uses the first method listed to authorize users for specific network services.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12. easier way to help you pass any IT exams.html 111. network B. This process continues until there is successful communication with a listed authorization method. unicast. Errors in the protocol-stack implementation. the Cisco IOS software selects the next method listed in the method list. creating excessive traffic and degrading network performance.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathen. Reference: http://www. Storm control uses rising and falling thresholds to block and then restore the forwarding of broadcast.cisco. EXEC D. if that method fails to respond. You can also set the switch to shut down the port when the rising threshold is reached. 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.1_22ea/ SCG/scg/swtrafc.

1x? A. or ARAP connection. Which login credentials are required when connecting to the console port in this output? A.  Filtering and Firewalls" part of this book. ·Network--Applies to network connections. RADIUS with EAP Extension B.cisco. the authentication service is transparent to the client.com/c/en/us/td/docs/switches/lan/catalyst2940/ software/release/12- 1_19_ea1/configuration/guide/2940scg_1/sw8021x. Command authorization attempts authorization for all EXEC mode commands. The safer . SLIP. the authentication server--performs the actual authentication of the client. This can include a PPP.cisco.ht ml 113. RADIUS using VSA Answer: A Explanation: With 802. login authentication default Answer: A 57 / 121 .com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathor. username cisco with password cisco C. Reverse Access--Applies to reverse Telnet sessions.pdf 114. you are defining a particular list of authorization methods for the indicated authorization type. Reference: http://www. Reference: http://www. EXEC--Applies to the attributes associated with a user EXEC terminal session. RADIUS with CoA D. When you create a named method list. Because the switch acts as the proxy.Which authentication service is needed to configure 802. easier way to help you pass any IT exams. no username with password linepass D. The Remote Authentication Dial-In User Service (RADIUS) security system with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server. Commands--Applies to the EXEC mode commands a user issues. TACACS+ C. associated with a specific privilege level. including global configuration commands.1x. none required B. 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.Refer to the exhibit.

if that fails use the line password. Finally. easier way to help you pass any IT exams. Rate-limits DHCP traffic from trusted and untrusted sources. untrusted hosts with leased IP addresses B." The AAA default login preference is stated in order from first to last. RADIUS server. None means no authentication. local username Answer: A Explanation: SSH sessions use the vty lines. untrusted hosts with available IP addresses D. trusted hosts with available IP addresses Answer: A Explanation: DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. local username C. meaning that credentials are not required and all sessions are allowed access immediately. so here the "aaa authentication login default group radius local line" means to use RADIUS first. which contains information about untrusted hosts with leased IP addresses. 58 / 121 .Refer to the exhibit. line password B. local username. local username. line password. When a network administrator is attempting an SSH connection to the device.Which type of information does the DHCP snooping binding database contain? A. RADIUS server. where the configured authentication method is named "default. The DHCP snooping feature performs the following activities: Validates DHCP messages received from untrusted sources and filters out invalid messages.  Explanation: Here the console has been configured with the NO_AUTH name. Line password. 115. RADIUS server D. 116. in which order does the device check the login credentials? A. RADIUS server. trusted hosts with leased IP addresses C. The safer . · Builds and maintains the DHCP snooping binding database. Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts. then if that fails use the local user database. Line password. which lists none as the authentication method.

The promiscuous port can communicate with all interfaces. isolated port C. VTP pruning D. If a Layer 2 LAN port is connected to a DHCP client. the switch forwards the packet without any checks. The safer .pdf 117. ip dhcp snooping C.html 118.2SX/configuration/ guide/book/snoodhcp. promiscuous port B. ip dhcp snooping information Answer: A Explanation: When configuring DHCP snooping. and enable DHCP globally on the switch. On untrusted interfaces. ip dhcp snooping trust B. including the community and isolated 59 / 121 . storm control C. Reference: http://www. the switch forwards the packet only if it is valid.Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A.Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces. Before globally enabling DHCP snooping on the switch.2SX/configuration/guide/book/snoodhcp.cisco.com/c/en/us/ support/docs/switches/catalyst-3750-series.Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. If a Layer 2 LAN port is connected to a DHCP server. make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. including the community and isolated host ports? A.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. the DHCP snooping binding database.cisco.com/c/en/us/td/docs/ switches/lan/catalyst6500/ios/12. follow these guidelines: DHCP snooping is not active until you enable the feature on at least one VLAN. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command.cisco. If the ARP packet is received on a trusted interface. easier way to help you pass any IT exams. community port D. Reference: http:// www.  Reference: http://www.switches/72846-layer2-secftrs-catl3fixed. 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. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Dynamic ARP Inspection B.html 119. ip dhcp trust D. trunk port Answer: A Explanation: The types of private VLAN ports are as follows: Promiscuous--A promiscuous port belongs to the primary VLAN.

but these ports cannot communicate with ports in any other community or isolated VLAN in the private VLAN. and to other promiscuous ports. You can have more than one isolated port in a specified isolated VLAN. Each promiscuous port can have several secondary VLANs. The ports within one community can communicate. associated to that port.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/ CLIConfigurationGuide/PrivateVLANs. These interfaces are isolated from all other interfaces in other communities and from all isolated ports within the private VLAN domain. and the traffic from each isolated port also remains completely separate. Isolated VLAN --An isolated VLAN is a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports. and Community Private VLANs Primary VLANs and the two types of secondary VLANs (isolated and community) have these characteristics: Primary VLAN-. that belong to those secondary VLANs associated to the promiscuous port and associated with the primary VLAN.The primary VLAN carries traffic from the promiscuous ports to the host ports. isolated VLAN B. Community ports communicate with other ports in the same community VLAN and with associated promiscuous ports. Isolated--An isolated port is a host port that belongs to an isolated secondary VLAN. promiscuous VLAN Answer: A Explanation: Understanding Primary. You can configure multiple community VLANs in a private VLAN domain. This port has complete isolation from other ports within the same private VLAN domain. Each isolated VLAN can have several isolated ports. The safer . both isolated and community.cisco. all the traffic remains isolated within each one.html 120. You can associate a secondary VLAN to more than one promiscuous port. You can configure multiple isolated VLANs in a private VLAN domain.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.cisco. Isolated. Private VLANs block all traffic to isolated ports except traffic from promiscuous ports. easier way to help you pass any IT exams. Community--A community port is a host port that belongs to a community secondary VLAN. You may want to do this for load-balancing or redundancy purposes.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/ cli/ CLIConfigurationGuide/PrivateVLANs. Traffic received from an isolated port is forwarded only to promiscuous ports. or no secondary VLANs. 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. You can have several promiscuous ports in a primary VLAN. primary VLAN C. except that it can communicate with associated promiscuous ports. Each port is completely isolated from all other ports in the isolated VLAN. community VLAN D.html 60 / 121 .  host ports. as long as the promiscuous port and secondary VLANs are within the same primary VLAN. You can also have secondary VLANs that are not associated to any promiscuous port. Reference: http://www. Reference: http://www.

It may also contain static entries that you have created. storm control C.cisco. Drops invalid ARP packets. dynamic ARP database C.html 123. 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.html 122. private VLAN Answer: A Explanation: IP Source Guard Configuration Guidelines You can configure static IP bindings only on nonrouted ports. This database is built by DHCP snooping when it is enabled on the VLANs and on the device. 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. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database. the source IP address filter is applied on all the VLANs. If you enter the ip source binding mac- address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface.  121.Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. If you are enabling IP source guard on a trunk interface with multiple VLANs and DHCP snooping is enabled on all the VLANs.Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or 61 / 121 . Reference: http://www.When IP Source Guard with source IP filtering is enabled on an interface. DHCP snooping B.1x port-based authentication is enabled. this error message appears: Static IP source binding can only be configured on switch port. DHCP snooping database B. Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet. DHCP snooping must be enabled on the access VLAN for that interface. spanning-tree portfast D.com/c/en/us/td/docs/switches/lan/catalyst2960x/ software/15- 0_2_EX/security/ configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960- x_cg_chapter_01110. Reference: http:// www. dynamic routing database D. You can enable this feature when 802. easier way to help you pass any IT exams. which feature must be enabled on the access VLAN for that interface? A.cisco. The safer .

cisco.1x authenticates. router(config-if)#storm-control action shutdown B. It allows port security to secure the MAC address that 802. · Enter the no storm-control action shut-down command to revert to the default action (drop).html 125.1x to secure the IP address that port security authenticates. 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. · Use the error disable detection and recov-ery feature. Port security secures the MAC addresses that 802. D. Reference: http://www.1X is already preventing inbound 62 / 121 . It allows port security to secure the IP address that 802. B.1x authenticates. which creates excessive traffic and degrades network performance. 802.1X authenticates. Which option describes what this configuration allows? A. VTP pruning D. port security C. router(config-if)#storm-control action error D. multicast.1X processes packets before port security processes them. slot/port} | {port-channel num-ber}} Step 2 Router (config-if)# storm-control (Optional) Configures traffic storm control to action shutdown error-disable ports when a traffic storm occurs. or the shutdown and no shut-down commands to reenable ports. so when you enable both on an interface. storm control B. Reference: http://3c3cc. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack. easier way to help you pass any IT exams.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. C. It allows 802. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast.1x on the same interface.2SX/configuration/ guide/book/storm.  broadcast traffic? A.1X on the same interfaces. 802. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN. Answer: A Explanation: 802. The safer .A network engineer configures port security and 802.Which command would a network engineer apply to error-disable a switchport when a packet.1x to secure the MAC address that port security authenticates.com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure. It allows 802.storm is detected? A.pdf 124. router(config-if)#storm-control action trap C.1X and Port Security You can configure port security and 802.

and added to the running configuration? A.pdf 127. SPAN ports--You can configure port security on SPAN source ports but not on SPAN destination ports.  traffic on the interface from unknown MAC addresses.com/c/en/us/td/docs/switches/lan/catalyst4500/12.2/25ew/ configuration/guide/conf/port_sec.cisco. sticky B.Which feature describes MAC addresses that are dynamically learned or manually configured. dynamic access point Answer: A Explanation: Port Security and Port Types You can configure port security only on Layer 2 interfaces. On an access port. promiscuous B.com/c/en/us/td/docs/switches/datacenter/sw/4_1/ nx- os/security/configuration/guide/sec_nxos-cfg/sec_portsec. dynamic C. you can configure MAC addresses to be sticky. The safer . stored in the address table. Reference: http://www. and added to the running configuration. VLAN maximums are not useful for access ports. Details about port security and different types of interfaces or ports are as follows: Access ports--You can configure port security on interfaces that you have configured as Layer 2 access ports. community C. If these addresses are saved in the configuration file. static D. easier way to help you pass any IT exams. stored in the address table. The device allows VLAN maximums only for VLANs associated with the trunk port. static trunk ports B. port security applies only to the access VLAN.cisco. the interface does not need to dynamically relearn them when the switch restarts. Trunk ports--You can configure port security on interfaces that you have configured as Layer 2 trunk ports. it is not recommended.html 126. Reference: http:// www.html 128. EtherChannel port group D. Reference: http://www. isolated 63 / 121 .cisco. Although sticky secure addresses can be manually configured. Ethernet Port Channels--Port security is not supported on Ethernet port channels.com/c/en/us/ td/docs/switches/datacenter/sw/4_1/nx- os/security/configuration/guide/sec_nx-os-cfg/sec_portsec. destination port for SPAN C. These can be dynamically learned or manually configured. which port type connects the switch to the gateway router? A. secure Answer: A Explanation: With port security.On which interface can port security be configured? A.When you configure private VLANs on a switch.

standby priority C. Host Ports: o Isolated Port (I-Port): Connects to the regular host that resides on isolated VLAN.  D. Host Ports: o Isolated Port (I-Port): Connects to the regular host that resides on isolated VLAN. which type of port must you configure the gateway router port as? A. firewall or other common gateway device. Host port further divides in two types Isolated port (I-Port) and Community port (C-port). This port communicates with P-Ports and ports on the same community VLAN. This port communicates only with P-Ports.When you configure a private VLAN. Promiscuous port (P-Port): The switch port connects to a router. In other words. In other words.org/ wiki/Private_VLAN 130.wikipedia. Reference: http://en. promiscuous port B. 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. Reference: http://en. community port D. This port communicates with P-Ports and ports on the same community VLAN. Promiscuous port (P-Port): The switch port connects to a router. This port communicates only with P-Ports. firewall or other common gateway device. it is a type of a port that is allowed to send and receive frames from any other port on the VLAN. it is a type of a port that is allowed to send and receive frames from any other port on the VLAN. trunked Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. o Community Port (C-Port): Connects to the regular host that resides on community VLAN. the hot standby priority on the device on which tracking has been configured decreases by 64 / 121 . The safer . backup interface D. This port can communicate with anything else connected to the primary or any secondary VLAN.wikipedia. easier way to help you pass any IT exams. Host port further divides in two types Isolated port (I-Port) and Community port (C-port).Which configuration command ties the router hot standby priority to the availability of its interfaces? A. o Community Port (C-Port): Connects to the regular host that resides on community VLAN. access port Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. When a tracked interface fails.org/ wiki/Private_VLAN 129. This port can communicate with anything else connected to the primary or any secondary VLAN. isolated port C.

Set a priority value used in choosing the active router. Use the no form of the command to restore the default values.html 133.What is the default HSRP priority? A. Reference: http://www. The VSS system creates a single logical router at Layer 3. The safer . 1024 Answer: B Explanation: standby [group-num. Reference: http://www.cisco. VRRP 65 / 121 .cisco. 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. This VSS routing instance fulfills this first-hop role without the need for a dedicated protocol. VSS eliminates the need for FHRP at the aggregation layer of the data center.html 131.1_19_ea1/confi guration/guide/swhsrp. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes. The highest [preempt [delay delay]] number represents the highest priority.html#wp1044327 132. the default is 0 (no de. provides two independent supervisors with two different control planes D. 120 D. you can configure a separate list of interfaces to be tracked. its state changes do not affect the hot standby priority of the configured device.  10.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate. the default priority is 100. 50 B.com/en/US/docs/switches/lan/catalyst3550/software/release/12.lay before taking over). (Optional) group-number--The group number to which the command applies.com/en/US/docs/switches/lan/catalyst3550/software/ release/12. If an interface is not tracked. it assumes control as the active router.pone taking over the active role for the shown number of seconds. HSRP C.1_19_ea1/confi guration/ guide/swhsrp. The VSS IP route is highly available due to MEC and the resiliency of the VSS system.Which option is a benefit of using VSS? A. simplifies configuration C. (Optional) delay--Set to cause the local router to post. GLBP B. 100 C. The ber] priority priority range is 1 to 255. reduces cost B. For each interface configured for hot standby. Reference: http://www.cisco. easier way to help you pass any IT exams. The range is 0 to 36000 (1 hour).Which First Hop Redundancy Protocol is an IEEE Standard? A.

int.  D.up to 4 AVF routers on the 1 active router. routers. one with highest pri. 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.2 udp 1985 224.optimal loadbalanc-algorithm ing. OSPF Answer: C Explanation: A comparison of the three First Hop Redundancy Protocols are listed below: GLBP HSRP VRRP Protocol (Gateway Load (Hot Standby Router (Virtual Redundancy Features Balancing Pro-protocol) Router Protocol) tocol) 1 AVG (Ac-tive Virtual Gateway).0..com/2008/08/23/router-highavailability-protocol- comparison-2/ 134.group per in-pendent algo-terface/SVI/routed terface/SVI/routed rithm.ip address. The safer .18 IP 112 224. Cisco propri-Scope Cisco proprietary IEEE standard etary Active Virtual Active Router: Master Router: (*) Gateway: 1-Highest Priority 1-Highest Priority 1-Highest Pri-Election 2-Highest IP 2-Highest IP ority (tiebreaker) (tiebreaker) 2-Highest IP (tiebreaker) Tracking yes yes yes Optimization Preempt yes yes yes features Timer ad-yes yes yes justments Traffic type 224.1 group (Active -1 master router. int. easier way to help you pass any IT exams.102 udp (version1) 3222 224..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? A..(generally through through ARP DHCP) DHCP) requesting a unique virtual gateway.Multiple VRRP rithm.address.0. 10 D.0.. traffic.(generally through ing. ority become master. the . -Round-Robin algorithm (de-fault).0..Use virtual ip dress.0.Host-de-group per in. When a tracked 66 / 121 .0.up to Router role 1024 virtual routers (GLBP groups) per physical inter-face. if not. Reference: http://cciethebeginning.102-udp 1985 (version2) Advertisement 1 Hello 3 sec-Hello 3 seconds second onds (Master Down Inter-Timers val)3 * Advertisement (Hold) 10 sec- + skew time (Hold) 10 seconds onds (Skew time)(256-pri-ority) / 256 Load-balancing oriented-Weighted algo- -Multiple HSRP .0. Load-balancing functional-Clients are ity transparently updated with Requires appropriate Requires appropriate virtual MAC distribution of Virtual distribution of Virtual according to GW IP per Clients for GW IP per Clients for load-balancing optimal load-balanc.wordpress. 5 C. -Can use real router -Use virtual ip ad. 1 B.1 standby router..0.1 or Virtual For-or more backup more listening warder) passing routers.

html 137. the hot standby priority on the device on which tracking has been configured decreases by 10. Gateways are assigned the next MAC address in sequence. active virtual gateway D. A virtual forwarder that is assigned a virtual MAC address by the AVG is known as a primary virtual forwarder. Reference: http://www. A virtual forwarder that has learned the virtual MAC address is referred to as a secondary virtual forwarder.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. 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. 6 D. The safer .html 135.  interface fails.Which gateway role is responsible for answering ARP requests for the virtual IP address in GLBP? A. you can configure a separate list of interfaces to be tracked. virtual router master B. Other group members provide backup for the AVG in the event that the AVG becomes unavailable.cisco. virtual router backup 67 / 121 .Which VRRP router is responsible for forwarding packets that are sent to the IP addresses of the virtual router? A. If an interface is not tracked. active virtual forwarder B. its state changes do not affect the hot standby priority of the configured device. Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses. The AVG assigns a virtual MAC address to each member of the GLBP group.html#wp1039651 136. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address. Reference: http://www. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address. 8 Answer: B Explanation: GLBP Virtual MAC Address Assignment A GLBP group allows up to four virtual MAC addresses per group. Other members of the GLBP group learn the virtual MAC addresses from hello messages.What is the maximum number of virtual MAC addresses that GLBP allows per group? A. 4 C. active virtual router C.com/en/US/docs/switches/lan/catalyst3550/software/ release/12.cisco. easier way to help you pass any IT exams.1_19_ea1/confi guration/guide/swhsrp. Other group members request a virtual MAC address after they discover the AVG through hello messages.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. For each interface configured for hot standby. The AVG is responsible for assigning the virtual MAC addresses to each member of the group. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. Reference: http://www. 2 B.cisco.

This is the router that. will respond to packets addressed to one of these IP addresses for ICMP pings.cisco. standby 1 track 100 decrement 1 C.Refer to the exhibit.html 140.org/rfc/rfc3768. Reference: http://www. standby follow D. The safer . Virtual Router An abstract object managed by VRRP that acts as a default router for hosts on a shared LAN. etc. Primary IP Address An IP address selected from the set of real interface addresses. 68 / 121 . VRRP advertisements are always sent using the primary IP address as the source of the IP packet. Reference: http:// www. One possible selection algorithm is to always select the first address.com/en/US/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp. when up. standby slave B. It consists of a Virtual Router Identifier and a set of associated IP address(es) across a common LAN. Virtual Router Master The VRRP router that is assuming the responsibility of forwarding packets sent to the IP address(es) associated with the virtual router.Which command correctly configures standby tracking for group 1 using the default decrement priority value? A. virtual router active D. then it will always become the Master. random delay so that all client groups do not change at the same time. and answering ARP requests for these IP addresses.  C. HSRP client groups follow the master HSRP with a slight. There is no need to explicitly state the value if the desired value is the default value. A VRRP Router may backup one or more virtual routers.Which command configures an HSRP group to become a slave of another HSRP group? A. standby 1 track 100 decrement 5 D.ietf. standby group backup Answer: C Explanation: Perform this task to configure multiple HSRP client groups. standby 1 track 100 B.txt 138. The "standby follow" command configures an HSRP group to become a slave of another HSRP group. IP Address Owner The VRRP router that has the virtual router's IP address(es) as real interface address (es).hsrp- mgo. 139. Note that if the IP address owner is available. virtual router standby Answer: A Explanation: VRRP Definitions VRRP Router A router running the Virtual Router Redundancy Protocol. easier way to help you pass any IT exams. standby 1 track 100 decrement 20 Answer: A Explanation: The default decrement value for HSRP standby tracking is 10. standby group track C. TCP connections. It may participate in one or more virtual routers.

shtml#dr 141. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224. Which command can prevent BPDU transmission on this port? A. If the interface MAC address is different from the one reported in the error message.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520. LACP system priority B. LACP port priority 69 / 121 . then some other device with a MAC address reports this error message. a network analyzer is connected to Port f0/1 of a LAN switch.255.0. easier way to help you pass any IT exams.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four. issue the show interface command to verify the MAC address of the interface. then it indicates that this router is receiving its own hello packets sent. If the MAC address of the interface is the same as the one reported in the error message.0.102 and User Datagram Protocol (UDP) port 3222 (source and destination). %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. no spanning-tree link-type shared Answer: C 142.0. permit the Multicast address by permit 224. HSRP configured on same interface as GLBP D. Verify the spanning-tree topology and check if there is any layer2 loop. In order to resolve this issue. When troubleshooting a network problem.cisco. spanning-tree portfast bpdufilter default D. Reference: http://www. When configuring the multicast boundary command. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.0. The safer .255.Refer to the exhibit. Incorrect GLBP IP address C.  Which option describes the reason for this message in a GLBP configuration? A.) A. Unavailable GLBP active forwarder B. spanning-tree bpduguard default C. spanning-tree portfast bpduguard enable B.255.0 15.

To follow the Layer 2 switching guidelines. B. BPDUignore 70 / 121 . BPDUblock B. The safer . C. however. D. however.After UDLD is implemented. Normal UDLD operations that prevent traffic loops. hot-standby link identification number G. Answer: B 145. interface MAC address D. interface bandwidth Answer: ABDE 143. The local RSPAN switch is replicating only Rx traffic to the remote switch. C.RSPAN has been configured on a Cisco Catalyst switch. RPVST+ E. easier way to help you pass any IT exams. UDLD timers are inconsistent. The engineer does not want this switch participating in Spanning Tree with the rest of the network. Which type of misconfiguration is a cause? A. The local switch is overloaded with the amount of sourced traffic that must be replicated to the remote switch. The local and remote RSPAN switches are configured using different session IDs.A network engineer is installing a switch for temporary workers to connect to. BPDUfilter C. UDLD port is configured in aggressive mode. system ID E. end user connectivity is still required. The RSPAN designated VLAN is missing the remote span command. port number F. B. The port then transitions into the errdisable state. 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. RSTP D. traffic is not being replicated to the remote switch. PVST+ C. D. Answer: A 144. UDLD is enabled globally. This port continues to reestablish until after eight failed retries.  C. a Network Administrator noticed that one port stops receiving UDLD packets. MST B. STP Answer: A 146. Which spanning-tree feature accomplishes this? A. Which option describes what causes the port to go into the errdisable state? A.

Configure a SPAN session to monitor the received traffic on interface g0/4 only for VLAN 3. shutdown C. Configure a SPAN session to monitor the received traffic on interface g0/5 only for VLAN 3. D. easier way to help you pass any IT exams. BackboneFast C. What is the result of the SPAN configuration on a Cisco switch? A.Refer to the exhibit. D. The safer . BPDU guard Answer: D 151.Refer to the exhibit. 71 / 121 . BPDUguard E. A sticky MAC address can be a unicast or multicast address.Which statement about the MAC address sticky entries in the switch when the copy run start command is entered is true? A. A sticky MAC address ages out of the MAC address table after 600 seconds. which action must be performed for the configuration to take effect? A.Enablement of which feature puts the port into err-disabled state when the port has PortFast enabled and it receives BPDUs? A. B. backup config Answer: A 149. Answer: A 150. BPDUdisable Answer: B 147. A sticky MAC address is lost when the switch reboots. Configure a SPAN session to monitor the received traffic on interface g0/5 for all VLANs except VLAN 3. write memory D. BPDU filtering B.  D. EtherChannel D. Answer: A 148. Configure a SPAN session to monitor the received traffic on interface g0/4 for all VLANs except VLAN 3. B. A sticky MAC address is retained when the switch reboots. C.When SDM templates are configured. C. reload B.

QoS D. Answer: B 153. and then the VLAN is deleted. They remain up. DSW1(config-if)#cdp holdtime 30 F. D. DSW1(config)#cdp holdtime 90 E. They go down until they are reassigned to a VLAN. easier way to help you pass any IT exams. DSW1(config)#cdp timer 30 D.  Which configuration ensures that the Cisco Discovery Protocol packet update frequency sent from DSW1 to ALS1 is half of the default value? A. DSW1(config)#cdp timer 90 B. PortFast C. but they are reassigned to the native VLAN.Which statement describes one major issue that VTP can cause in an enterprise network when a new 72 / 121 .Interfaces are assigned to a VLAN. C.1Q trunking B. They go down. DSW1(config-if)#cdp holdtime 60 C.Which feature is automatically configured when an administrator enables a voice VLAN? A. private VLANs Answer: B 154. Which state are these interfaces in after the VLAN is deleted? A. 802. but they are reassigned to the default VLAN B. They remain up. The safer . but they are reassigned to the default VLAN. DSW1(config-if)#cdp timer 60 Answer: C 152.

source MAC address and source IP address B. D. which statement about placement of the IP address is true? A. The IP address is assigned via DHCP only. easier way to help you pass any IT exams. desirable D. active B. D. The IP address is placed on the lowest numbered member port. The safer . B. on E. destination MAC address and destination IP address C.An engineer is configuring an EtherChannel between two switches using LACP.) A. Answer: B 155. version 3 D. It can cause a network-wide VLAN configuration change if the revision number on the new switch is lower. Which version of VTP supports these extended VLANs? A. C. The IP address is placed on the port-channel logical interface.Which option is valid for EtherChannel load balancing? A. If the EtherChannel mode on switch 1 is configured to active.When a Layer 2 EtherChannel is configured. which two modes on switch 2 establish an operational EtherChannel? (Choose two. B. It can cause a network-wide VLAN configuration change if the revision number on the new switch is higher. source MAC address and destination IP address D. source MAC address and destination MAC address Answer: D 159. Answer: B 158. The IP address is placed on the highest numbered member port. VTP does not recognize extended VLANs Answer: C 156.A network administrator configures 10 extended VLANs ranging from VLANs 3051 to 3060 in an enterprise network. 73 / 121 . It can cause routing loops. version 1 B. It can cause network access ports to go into err-disabled state.  switch is introduced in the network in VTP mode server? A.Refer to the exhibit. passive Answer: AE 157. C. version 2 C. auto C.

D.Refer to the exhibit. The EtherChannel protocols do not match. 74 / 121 . easier way to help you pass any IT exams.  An engineer is configuring EtherChannel between two switches and notices the console message on switch 2. Switch 1 does not have enough member ports configured. Based on the output. The safer . which option describes the reason for this error? A. Answer: D 160. Switch 2 has too many member ports configured C. The port channel interface numbers do not match. B.

Which statement is true? A. The safer . C. easier way to help you pass any IT exams.  DSW1 should share the same MST region with switch DSW2.) A. The destination port can be destination in multiple SPAN sessions. Configure DSW1 with the same region name. what is the total bidirectional traffic flow between two logical counter-rotating paths? A. The source port can be monitored in multiple SPAN sessions. E. DSW1 automatically inherits MST configuration from DSW2 because they have the same domain name. The source port can be only an Ethernet physical port. B. You can mix individual source ports and source VLANs within a single session. The destination port does not participate in STP. B. it automatically inherits MST configuration from DW2. DSW2 uses the VTP server mode to automatically propagate the MST configuration to DSW1.In a switch stack environment. and VLAN-to-instance mapping as shown on DSW2.Which two statements about SPAN source and destination ports during an active session are true? (Choose two. D. therefore. D. revision number. Configure DSW1 with the same version number. C. 16 Gbps 75 / 121 . Answer: BD 162. and VLAN-to-instance mapping as shown on DSW2. DSW1 is in VTP client mode with a lower configuration revision number. E. Answer: D 161.

C.On which layer does IP source guard provide filtering to prevent a malicious host from impersonating the IP address of a legitimate host? 76 / 121 . D.Refer to the exhibit. 128 Gbps Answer: B 163. Which statement about the SPAN and RSPAN configuration on SW1 is true? A. SPAN session 2 only monitors egress traffic exiting port FastEthernet 0/14. Answer: C 164. RSPAN session 1 monitors activity on VLAN 50 of a remote switch. 1000 bindings B. SPAN session 2 monitors all traffic entering and exiting port FastEthernet 0/15. 5000 bindings D. 64 Gbps D. 8000 bindings Answer: D 166. VLAN database B. The safer . RSPAN session 1 is incompletely configured for monitoring.Which option is the minimum number of bindings that the DHCP snooping database can store? A. B. easier way to help you pass any IT exams. routing information Answer: C 165. DHCP snooping database C. 2000 bindings C.Which information does the subordinate switch in a switch stack keep for all the VLANs that are configured on it? A.  B. 32 Gbps C. spanning trees D.

Refer to the exhibit.10. HSRP misconfiguration C. a hardware problem Answer: B 170.) A.Refer to the exhibit. Which option is the most likely explanation of the duplicate address message logged? A. a PC with IP of 10.Which two statements about HSRP. Layer 3 D. HSRP supports up to 255 groups on the same switch or router. E. easier way to help you pass any IT exams.1. D. C.By default. HSRP is the preferred protocol to be used on multivendor environments. VRRP has one master router. one standby router. B.1 D. and many listening routers. off D. Answer: CD 169. Layer 2 C. The safer . on C. Layer 1 B. disabled B. and VRRP are true? (Choose two. 77 / 121 . GLBP allows for a maximum of four MAC addresses per group. what is the state of port security on a switch? A. Layer 7 Answer: B 167. VRRP is a Cisco proprietary protocol.  A. learning Answer: A 168. spanning-tree loop B. GLBP.

The safer .) A. Answer: C 173. D. The control traffic must be manually enabled on the new native VLAN. The standard configuration is used for each uplink. easier way to help you pass any IT exams. The engineer decides to force the secondary link to be the desired forwarding root port. B. The switchport mode trunk command should be first in the output. apply root guard to all outgoing neighbor interfaces 78 / 121 . What is wrong with the configuration? A. E. Apply a BPDU filter on the primary interface of the remote switches. Answer: AD 172. Enable Rapid Spanning Tree to converge using the secondary link. adjust STP priority to the maximum value B. The switchport that is configured for VLAN 50 is the primary connection to the spanning-tree root switch. Answer: D 171.A network engineer wants to make sure that an access switch will never become a Spanning Tree root for VLAN 5. The encapsulation type is incorrect C. B. B. The priority value for VLAN 50 is set to 4094 on the root while the local switch priority is set to 32768. D. disable STP globally C. Change the link-type to point-to-point. The interface is administratively down. Adjust the secondary link to have a lower priority than the primary link. Spanning tree determines the priority of the current root for VLAN 50 and reduces the priority of the local switch to a lower value. the switch control traffic. The spanning-tree timers are reduced to improve the convergence time for VLAN 50. is no longer working. such as CDP and VTP. D.An access switch at a remote location is connected to the spanning-tree root with redundant uplinks. A network engineer notices that there are issues with the physical cabling of the current root port. All ports that are configured on the current switch with VLAN 50 transition to designated ports. Which action accomplishes this task? A. After applying the settings on the uplinks to the core switches. C. E. The native VLAN is not present on the trunk. C. What action will accomplish this task? A.  A network engineer changes the default native VLAN to VLAN 999.Which two options are two results of using the command spanning-tree vlan 50 root primary within a spanning-tree network under global configuration? (Choose two.

The safer .  D. easier way to help you pass any IT exams. Answer: 175. enable MSTP and use a different revision number than all other switches Answer: A 174. which statement abort the current configuration on port GigabitEthernet2/0/1 is true? 79 / 121 .Refer to the exhibit.

log E. which two actions can be configured to occur? (Choose two. It is an access port in VLAN 700 Answer: B 176. Trap B.102. D. MAC address 0000. Preemption is enabled by default.Which two options are advantages of deploying VTPv3? (Choose two.0. notify admin C.) A.acOc indicates that default gateway redundancy is provided through GLBP. It is a trunk port and the natrve VL AN m VLAN 700 D. D. A VRRP backup virtual router becomes the master router if its priority is higher than the priority of the current master router. It is a trunk port and the native VLAN is VLAN1 C. easier way to help you pass any IT exams.  A. C. redirect traffic D. A backup GLBP active virtual gateway can become active only if the current active virtual gateway fails. Unless specifically Configured.Which two statements about default FHRP behavior are true? (Choose two. Answer: AE 177. the priority of an HSRP router is 200. E.) A. It supports the propagation of private VLANs. 80 / 121 . GLBP. B. shut down Answer: AE 178. It can be configured to allow only one VTP server to make changes to the VTP domain Answer: CE 179. B.Which statement about HSRP. VRRP group members communicate using multicast address 224.If StormControl is enabled on a port and the traffic reachesthe configured level. and VRRP is true? A. It supports the use of AES to encrypt VTP messaging. B. It adds an FCS field at the end of each VTP frame for consistency checking C.0. It stores the VTP domain password securely as a SHA-1 hash. The safer .0c07. A standby HSRP router becomes active if it has a higher priority than the priority of the current active router E. It is an access port configured for a phone and a PC B.) A.

Port security is still enabled on the older network switch port E. It is a trunk port and the native VLAN is VLAN1 C. It is an access port in VLAN 700 Answer: B 181. Answer: D 180. Which statement about the current configuration on port GigabitEthernet2/0/1 is true? A. After the PC is moved. The EtherChannel is down because of a mismatched EtherChannel protocol 81 / 121 . Port security sticky exists on the new network switch port B. Which two factors are possible causes of this issue? (Choose two) A. Port security sticky is disabled on the new network switch port C. It is an access port configured for a phone and a PC B.18. A network administrator moves a PC from one office desk to another. Which statement about the status of the EtherChannel is true? A.  C. The safer . D.0. An engineer has run the show EtherChannel summary command and the output is displayed. the network administrator clears the port security on the new network switch port connecting to the PC. It is a trunk port and the native VLAN is VLAN 700 D. HSRP group members communicate using multicast address 224.0.Refer to the exhibit.An enterprise network has port security sticky enabled on all access ports. GLBP uses UDP port 3222 (source and destination) for hello messages. The EtherChannel is operational and configured for PAgP B. but the port keeps going back into err-disabled mode. Port security sticky is still enabled on the older network switch port Answer: AE 182.Refer to the exhibit. easier way to help you pass any IT exams. Port security must be disabled on all access ports D.

easier way to help you pass any IT exams. version 3 C. a service provider various private VLANs in its backbone network infrastructure to prevent certain VLANs communicating to each other. which two VLAN ranges are loaded on the switch? (Choose two) A. Interface Gi5/1 is using a Cisco proprietary trunking protocol 82 / 121 . VTP does not support private VLANs D. version 2 Answer: B 186. Untagged frames are forwarded via the native VLAN Answer: D 184.When a Cisco Catalyst switch that is configured in VTP server mode is first booted. The safer .Refer to the exhibit.  C. A. The first 1005 VLANs in the startup-config file E. The trunked port is put in err-disable state D. It drops the untagged frames C. VLANs greater than 1005 in the startup-config file C.A switch has been configured with the vlan dot1q tag native command. The EtherChannel is operational and is using no EtherChannel protocol Answer: D 183. Untagged frames are forwarded via the default VLAN B. The first 1005 VLANs in the VLAN database file D.To provide security. Which version of VTP supports the use of private VLANs? A. All VLANs are in the VLAN database B. Which statement describes what the switch does with untagged frames that it receive? A. VLANs greater than 1005 in the VLAN database file Answer: BC 185. version 1 B. The EtherChannel is down and configured for LACP D.

spanning-tree mst 1 priority 4096 E. Spanning-tree cost C.Refer to the exhibit.20 priority root D.where are the templates stored? A. D. all stack members B. all untagged traffic is tagged with VLAN 600 Answer: DF 187. The device is configured with the default MST region. spanning-tree mst 1 priority 1 F. The safer . spanning-tree mstp vlan 10. Interface Gi6/2 is the root port for VLAN 36 F. Spanning-tree priority B. all untagged traffic is tagged with VLAN 113 C.In a switch stack is configured to use SDM template.  B. stack master C. Which two commands ensure that DSW1 becomes root bridge for VLAN 10 and 20? A. Interface description D.which two attributes must match across the member ports?(choose two) A. flash memory 83 / 121 . On interface Gi6/2.When a Layer 2 trunking EtherChannel is configured. spanning-tree mst 1 root primary C. spanning-tree mstp 1 priority 0 B. allow VLANs Answer: DE 189. On interface Gi5/1. Interface Gi5/1 is using an industry standard trunking protocol E. spanning-tree mst vlan 10. Trunk mode E.20 root primary Answer: BD 188. easier way to help you pass any IT exams.

error-disable Answer: B 192. The operation is not allowed as an EtherChannel member cannot be a SPAN source port C. which two statements correctly indicate when an SNMP trap is set to the switch? (Choose two) A. (config) spanning-tree guard root B. When a new workstation connects to port F0/1 B. udld is working with non cisco devices C. The port forwards traffic in the EtherChannel group and acts as a SPAN source simultaneously B. TFTP server Answer: B 190. no change D. (config-if) spanning-tree guard root Answer: B 193. The port is put in the errdisabled state and can only be reenabled manually D.What is the command for configuring root guard? A. shutdown C. udld is a non-propriety B.What is the default port security violation A. log B. When the switch loses power and reboots E.Refer to exhibit. what he need to consider? A. The safer . When 61 MAC address are in the switch C.A physical switch port is part of an EtherChannel group. udld is layer 1 D. udld can aggressively disabled the port after eight failed retries Answer: D 194.What happens while the same port is configured as a SPAN destination? A. easier way to help you pass any IT exams. When the phone previously on Fa0/2 is now connect to Fa0/5 Answer: CE 191. The port is removed from the EtherChannel Answer: B 84 / 121 .  D.Network engineer want to use UDLD. When 61 percent of the Address table capacity is used D.

Use only one destination port for each RSPAN session D.What happens if you apply this command “vlan dot1q tag native” ? A. Virtual Switch Link D. The safer . Untagged frames are forwarded via the default VLAN B. active B. the switch with the highest stack member priority value D. Untagged frames are forwarded via the native VLAN Answer: D 200. desirable 85 / 121 .A Switch has been configured with the Vlan dot1q tag native command. Which statement describes what the switch does with untagged frames that it receives on a trunked interface? A.Which switch is chosen as the stack master during a stack master election or re-election? A. EtherChannel B. the switch with the lowest stack member ID Answer: C 198.An engineer is configuring an EtherChannel between two switches using PAgP If the EtherChannel mode on switch 1 is configured to auto. trunk C.which technology is needed between two switches for them to act as one network element and share control information and data traffic? A. Assign access ports to an RSPAN VLAN like any other campus VLAN Answer: A 196. packet go to defautl vlan C. auto C. easier way to help you pass any IT exams. which modes on switch 2 establish an operational EtherChannel? A. packet go to native vlan Answer: C 199. the switch with the highest stack member ID B. the switch with the lowest stack member priority value C.In regards to Cisco Virtual Switching System . virtual port channel Answer: C 197. The trunked port is put in err-disabled state D. Define an RSPAN VLAN before configuring an RSPAN source or destination session B.Which option is a Cisco recommended for RSPAN configuration practice? A.  195. Use a different RSPAN VLAN for each session if configuring RSPAN on multiple switches C. it drops the untagged frames C. packet will be dropped B.

easier way to help you pass any IT exams. R2 is using the default HSRP hello and hold timers Answer: CD 202. the HSRP priority on R2 becomes 80 D.Refer to the exhibit. if Fa0/0 is shut down. The safer . The interface is down B. on E.  D. passive Answer: C 201. Which statement about the interface is true? A. Which two statements can be derived from the output of the show standby command? (Choose two) A. R2 Fa1/0 regains mastership when the link comes back up B. R2 becomes the active router after the hold time expires C.Refer to the exhibit. The interface needs no shutdown configured 86 / 121 .

B.11.115 is the virtual HSRP IP address E.16.16. Enable VTP pruning on a VTP server in the management domain. then a TC BDPU is generated D.Refer to the exhibit.What action should a network admin take to enable VTP pruning on an entire management domain? A.16.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A.111 has preempt configured C. If either an edge port or a nonedge port move to a block state.111 D. Only nonedge ports moving to the forwarding state generate a TC BDPU C.11. The safer .Which statement is true about RSTP topology changes? A.11.  C. bypasses Answer: ACE 204. Only edge ports moving to the blocking state generate a TC BPDU E.11. Any change in the state of the port generates a TC BDPU B. Enable VTP pruning on any client switch in the domain. The router with IP address 172. Any loss of connectivity generates a TC BDPU Answer: B 205.111 B. The priority of the router with IP address 172.11. The IP address 172. Answer: D 206. The router with IP address 172. easier way to help you pass any IT exams. The switchport command is missing from the configuration Answer: A 203. Enable VTP pruning on every switch in the domain.112 is preferred over the router with IP address 172. which three statements about HSRP are true? (Choose Three) A. C.11.16. Based on the debug output. intercepts D.16.16. The other side of the interface is set as access D. The final active router is the router with IP address 172.112 has nonpreempt configured 87 / 121 . Enable VTP pruning on any switch in the management domain D. discads F. accepts E. deletes C. logs B.

the etherchannel interface of switch 2 is not configured Answer: C 210. Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208. Answer: ABD 207. B. the port transitions to the forwarding state. If BPDUs are received by a port configured for PortFast. Otherwise. B. PAgP Answer: A 211. STP D. The safer . based on the output what is the problem A. the etherchannel on the switch 1 using incorrect member port B.  F. then PortFast is disabled and the BPDUs are processed normally. the etherchannel protocol on switch 1 is not correct D. Routing should occur at the access layer if voice VLANs is utilized.When using EtherChannel misconfiguration guard. he notices the error message on Switch 2 (error message channel-missconfiguring error). which technology is used to prevent this type of misconfiguration from affecting the network? A. Vlans should be local to a Switch E. the etherchannel interface of switch 1 is not configured C. Routing may be performed at all layers but is most commonly done at the core and distribution layers C. 88 / 121 .What is the effect of configuring the following command on a switch? Switch(config)# spanning-tree portfast bdpufilter default A. The router with IP address 172.11.16. D. routing should occur at the distributionlayer.Refer to the exhibit. Routing should not be performed between VLANs located on separate switches D. An engineer is configuring an etherchannel between two switches. C. If BPDUs are received by a port configured for PortFast.112 is using default HSRP priority. they are ignored and none are sent. easier way to help you pass any IT exams. If BPDUs are received by a port configured for PortFast. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209. port security C.Which two statements are true about recommended practices that are to be used in a local VLAN solution design where layer 2 traffic is to be kept to a minimum? (Choose two) A. LACP B.

  Answer: 212. The safer . easier way to help you pass any IT exams. 89 / 121 .

The safer . 90 / 121 . easier way to help you pass any IT exams.  Answer: 213.

) 91 / 121 . Answer: BD 215. F. E. the default Hello timer is 30 seconds. the default Hello timer is 5 seconds. B. The safer .  Answer: 214.) A. the default Hold timer is 10 seconds.which two statements about HSRP timers are true? (Choose two. the default Hold timer is 15 seconds. the default Hold timer is 30 seconds. C.Which statements about RSPAN are true? (Choose two. D. easier way to help you pass any IT exams. the default Hello timer is 3 seconds.

UDLD is already enabled by default on all ports on cisco switches. GLBP B. which mode must be configured as a router facing port? A. FHRP Answer: C 219. DHCP snooping 92 / 121 . E. B. Answer: BC 216.which HSRP extension allows groups to share traffic loads? A. The safer .) A. promiscuous C. UDLD works at layer 1 of the OSI model. UDLD aggressively disables the port after eight failed retries to connect to neighbor. community D. . slave Answer: A 218. routing D. peer C. MHSRP D. C. C. It supports MAC adress learning. D. UDLD is an IEEE standard that can be configured on non-cisco devices. MAC address learning is not supported. easier way to help you pass any IT exams.a network engineer is considering implementing UDLD throughout the network.when a switch is added to a stack. RSPAN uses are GRE tunnel to transmit captured traffic.  A. which option must the network engineer consider? A. access B. port security C. which switch automatically configures the new switch with the correct IOS? A.host Answer: C 217. Answer: A 220. CGMP E. isolated B. B.When a private VLAN is configured. D. RSPAN VLANS can carry RSPAN traffic only. master B.which three features can be optimized by using SDM templates? (choose three. RSPAN VLANs are exempt from VTP pruning. adjacent D. CHSRP C. F. only one RSPAN VLAN can be configured per device.

destination port Answer: C 222. another network device B. the routing protocols in use on the device B. syslog D. switch(config-if)# spanning-tree guard root B. its port number E. MTU D. switch(config)# spanning-tree root guard E.which two types of threshold can you configure for tracking objects? (Choose two.Which three pieces of information about the remote device are reported by Cisco Discovery Protocol? (Choose three. switch(config-if)# spanning-tree guard-root D. reflector port D.  E. its hostname D. switch(config)# spanning-tree guard root C. trunk F. percentage E. delay 93 / 121 . its hardware platform Answer: CDF 223. switch(config-if)# spanning-tree root guard Answer: A 224.) A.which command enables root guard on a cisco switch? A. flat file C. its configuration reister value F.which mechanism is specific for RSPAN and not for SPAN? A. administrative distance15 F. its spanning-tree state C. The safer . weight B. bandwidth C.) A. collector Answer: D 225. monitor port C. redundant port E. source port B.where can netflow export data for long term storage and analysis? A. VLAN Answer: ACF 221. easier way to help you pass any IT exams.

Both switches operate in the PVST+ mode D. Spanning tree is disabled attomatically on the network B.DSW2 (prio 24xxx) || || 10G | || || ASW1 (prio 32XXX) ———————-1G————— A. Spanning tree contines to operate in Rapid PVST+ on DSW2 and the new switch operates in PVST+ C. ASW1 to DWS2 to core Answer: B 228. easier way to help you pass any IT exams.  Answer: AD 226. Both switches operate in the Rapid PVST+ mode Answer: B 227. Which statement describes the result if a switch that is running PVST+ is added to this network? A. The safer . 00-00-0c-07-ac-2D 94 / 121 .) A. ASW1 to DWS1 to core B.Refer to the exhibit.DSW1 connected to DSW2 with 10G link and to ASW1 with 10G link also DSW2 connected to ASW1 with 1G link Question: is what is the path for traffic sourced from a PC connected to ASW1 to reach DSW1 DSW1 (priority 28xxx) ————–10G ——.If HSRP group number is 45 what would be the MAC address? (Basically conversion of digit to hexadecimal with group of 16.

Access B. Routing D. 95 / 121 . and then the VLAN is deleted.Interfaces are assigned to a VLAN. Answer: A 230. Which state are these interfaces in after the VLAN is deleted? A.. shutdown the interface on one side only Answer: A 234. shutdown both interface ports B.. A. A.. A. vrrp [group-number] preempt Answer: ABC 231. isolated C..Select a valid VRRP configuration from a list of possible configurations.. easier way to help you pass any IT exams.What types of SDM templates you can use in switch? (Choose four) A. They remain up. host Answer: AB 232. promiscuous D. 128 B.. Enable this feature by using the spanning-tree etherchannel guard misconfig global configuration command. but they are reassigned to the default VLAN. 129 Answer: A Explanation: 128 default port Priority 235. Default C. security Answer: ABCD 233. vrrp [group-number] ip [ip-address] B.Private VLANs (PVLANs) have two secondary VLAN types(choose two) A.What is the process to configure EtherChannel? A. vrrp [group-number] priority [priority] C. VLANs E.  Answer: A 229.A question about spanning-tree port-priority. Switching F. The safer . community B.A question on EtherChannel misconfiguration.

learning. They go down. The source port can be monitored in multiple SPAN sessions C. E. VTP pruning D. LACP B.EtherChannel guard misconfig is configured on a switch.Which VTP mode is needed to configure an extended VLAN. Switch1(config) # spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true? A. The destination port does not participate in STP. You can mix individual source ports and source VLANs within a single session Answer: BD 239. the port goes into the spanning-tree inconsistent state Answer: A 238. the port is shut down immediately D. storm control C. but they are reassigned to the default VLAN D. server D. Extended VLANs are only supported in version 3 and not in versions 1 or 2 Answer: A 237. but they are reassigned to the native VLAN Answer: B 236. If an interface is enabled for portfast receives BDPU. They remain up. The destination port can be destination in multiple SPAN sessions D. which technology supports that A. If an interface is enabled for portfast receives BDPU. The source port can be only an Ethernet physical port B. and forwarding states B. If an interface is enabled for portfast receives BDPU. Dynamic ARP Inspection B. DHCP snooping Answer: A 240. and forwarding states. PagP 96 / 121 . the port does not go through the spanning-tree listening. the port goes through the spanning-tree listening.A network engineer configured an Ethernet switch using these commands. transparent B.  B. easier way to help you pass any IT exams. C. when a switch is configured to use VTP versions 1 or 2? A. learning. client C. The safer . They go down until they are reassigned to a VLAN C.Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A. If an interface is enabled for portfast receives BDPU.Which two statements about SPAN source and destination ports during an active session are true? A.

Port Security Answer: C 241. PC1 is connected to DSW1 and DSW2 (Root Bridge). DSW1: spanning-tree port priority 0 Answer: AB 244.If EtherChannel guard is configured. You should use "switchport trunk allowed vlan" to add additional VLANs into trunk Answer: A 246. errdisabled B.What should match during EtherChannel configuration? A. shutdown Answer: A 245.1Q tag? A. how the interface status is (or looks like) if misconfigured? A. spanning tree cost C.3. Change in port priority so traffic goes through DSW1 to DSW2 A. Ports towards PCs are in mode access VLAN 5 A. 0x0806 97 / 121 .  C. (config-if)#spanning-tree etherchannel guard misconfig Answer: A 243.question on Spanning-tree EtherChannel misconfiguration A.4" on SW2. There is a trunk with VLAN 1 and 5 allowed. allowed VLANs on the trunk Answer: DE 242. (config)#spanning-tree etherchannel guard misconfig B.There was another Exhibit about port priority. trunk mode E. There are 2 SW and 2 PCs. DSW2: spanning-tree port priority 16 D.Which option TPI 802.A question with an exhibit. DSW1: spanning-tree port priority 16 B. DSW2: interface g1/0 E. The safer . DSW1: interface g1/0 C. because you will remove VLANs 1 and 5 from trunk with this command.Core switch connected to 2 dis switches which connected 2 ASW. easier way to help you pass any IT exams. Question is if you do "switchport trunk allowed vlan 2. Default port prioirty is configured. The connection is lost between PCs. There is etherchannel trunk between DSW1 and DSW2. STP D. interface description D. Link connected from PC1 to DSW2 is 4Gbps and DSW1 is 10Gbps. what happens. spanning tree port priority B.

http://bbs. trunk port will be immediately B. packet is dropped 98 / 121 . tag is removed and packet is forwarded to the VLAN mentioned in the tag C. none until the port VLAN is determined D. http://bbs. unicast D. BDPU turn this port to err-disabled Answer: B 249.What will be behavior of an access port when a tagged packet is received with a VLAN ID of an acces port? A. http://bbs.VMPS question – a dynamic access port is member of which VLAN by default? A. Prevent unknown switch be a root port B. if write command "spanning-tree portfast trunk"? A. config)#spanning-tree loop-guard default D.  B. multicast Answer: C 248.com C.com B. config-if)#spanning-tree guard loop Answer: D 251. trunk port can be portfast mode C.hh010. config-if)#spanning-tree loop C. Root-inconsistent Answer: B 250.question about Loop guard configure A. VLAN 1 is the default VLAN B. easier way to help you pass any IT exams. The safer . 0x8100 Answer: D Explanation: 16 bit field set to 0x8100 in order to identify the frame as 802. router C.MAC address filter A. CPU-destined B. config)#spanning-tree loop guard default B.1q tagged frame 247. 0x888E C.com Answer: A 252.question about what would be.question about root guard A.hh010.hh010. 0x0800 D.

BPDUguard Answer: BCD 258.question in regards to what would occur after implementing RSPAN on a switch. config-if)# spanning-tree port-priority 127 C. Local user dbs is used after 3 unsuccessful logins via Radius server Answer: AC 257. storm control C. LACP B. A. A. STP Answer: D 256.A question in regards to RSPAN A.A question on local database for consoling to network devices. You can set user privileged levels D. tag is removed and packet is forwarded on the VLAN of the access port Answer: D Explanation: tag is removed and packet is forwarded on the VLAN of the access port 253.  D. PAGP D.A question about configuring spanning-tree port-priority based on a diagram. configuration ports into EtherChannel B.Question in regards to an EtherChannel misconfiguration. The safer . A. config)# spanning-tree port-priority 129 D. Traffic in network is doubled 99 / 121 . Local user dbs can be main and also backup authentication method B. PortFast C. security violation D. vlan 4029 remote span C. (config)# spanning-tree port-priority 127 B. vlan 4029 span D. Local user dbs is the only backup authentication method C.question in regards to three reasons for an errdisable state. easier way to help you pass any IT exams. vlan 510 remote span B. config-if)# spanning-tree port-priority 129 Answer: B 255. vlan 510 span Answer: A Explanation: vlan 510 remote span 254. A. A.

Remove 82 and forward C. config)# spanning-tree loopguard default B. easier way to help you pass any IT exams.What are the two ways to configure loop guard? A. Challenge D. Drop B.Which switchport feature will block the packet with unknown MAC address from sending it via port A. NA Answer: AB 261. Log D. NA D.Option 82 question with two choices 100 / 121 . Intercept B.question about what are RADIUS server responses A. A. Switchport protect Answer: A Explanation: 260. NA Answer: ABC 262. Destination port is unusable for normal use Answer: B Explanation: Destination port is unusable for normal use 259.question about action of DAI with invalid IP-to-MAC. Switchport block unicast B. config-if)# spanning-tree guard loop C. Reject C. Accept B. what does the switch do when it receives a packet with option 82? A. Drops C. Switchport portfast D. The safer .  B.What happens if a switch with dhcp snooping and ip source guard enabled globally. Packet with unknown MAC will be dropped C. Proxy D. Get Password E. NA Answer: B 264. Cancel Answer: ABC 263.

bypasses Answer: BDE 266.html 268.If all devices on an EtherChannel are sending traffic to a single MAC address. http://bbs. destination-MAC B. VLAN D. port security B.Which three features can be optimized by using SDM templates? A.hh010. which two methods of load balancing on the EtherChannel are preferred? (Choose two. NA D. show access ports B. discards F. deletes B.Which three functions does Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? A.Which command is used to verify trunk native VLANs? A. The safer . NA Answer: B 101 / 121 . easier way to help you pass any IT exams. http://bbs.com Answer: AB 265.cisco. accepts D. source-IP Answer: BD Explanation: http://www.com/c/en/us/td/docs/switches/lan/catalyst4500/12- 2/54sg/configuration/guide/config/channel. routing Answer: CDF 267.  A. src-dst-MAC C. intercepts E. show interfaces trunk C.) A. Layer 3 egress C. logs C.hh010.com D. DHCP snooping F. access E. trunk C. Layer 2 ingress B. destination-IP D. source-MAC E.

) A. When unidirectional fail is detected. spanning-tree vlan 10 root primary B. UDLD tries to reestablish link once before declaring the link down C. 2 DSW connected with EtherChannel. na Answer: A Explanation: To enable DAI on a per-VLAN basis.. easier way to help you pass any IT exams. Needs manual enable of portfast. na D. Hostname D. Disabled by default B. Interface ID C. To disable DAI. The safer . message interval based on configured timers Answer: AD 273. Enters on untrusted port C. Default CoS value of 5 for untagged. When unidirectional fail is detected.question about UDLD aggressive. A. use the no form of this command.. (Choose two. UDLD sends messages four times the message interval by default F. UDLD automatically . use the ip arp inspection vlan command in global configuration mode. Answer: A 272. NA Answer: ABC 271. 2 PCs per ALSW.Question about configuring VLAN 10 root bridge with spanning-tree switch priority. (config-if)# ip arp inspection vlan C. http://www. A.Which information does CDP supply from connected devices? Choose three. port state is determined by spanning tree D. D.Diagram is: with 1 core. Hardware Platform B. Config Register E.cisco.html 274.Question about voice VLAN.) A.. port is turned to errdisable E. UDLD messages are sent every 15 seconds B.  269.. NA D. spanning-tree vlan 10 priority 4096 C.. (config)# ip arp inspection vlan B. Per 102 / 121 . NA Answer: AB 270.. 2 ALSW.com/c/en/us/td/docs/ios-xml/ios/ipaddr/command/iad-crbook/ ip_arp_gratuitous_through_ip_dhcp_ping_packets.How to configure dynamic ARP inspection on a VLAN? A.

root primary B. NA D. switch(config-vlan)# private-vlan primary D. Question is how to make DSW1 the primary root for VLAN 10. Answer: BE 275. what does the “03” represent? A.  diagram current root for VLAN 10 is DSW2. switch(config-vlan)# private-vlan transparent Answer: C 279. diameter C. The type of encapsulation 103 / 121 .) A.Your manager asked you to make every port on your switch bypass the normal spanning-tree timers which includes your uplink to other switches. switch(config-vlan)# private-vlan private C. C. The safer . easier way to help you pass any IT exams. spanning-tree portfast access D.Regarding high availability. spanning-tree portfast trunk E. The GLBP group number B. switch(config-vlan)# private-vlan common B. disable RSTP and uses bpdu type 2 D. disable RSTP and uses bpdu type 4 B.Question about what does MST do? (Question looks incomplete) A.) A. enable RSTP and uses bpdu type 2 Answer: D 277.What keyword in macro command is used to configure a root bridge and automatically adjust STP timers? A. D. enable RSTP and uses bpdu type 4 C. na Answer: B 276. DSW2: change bridge priority to 61440 (highest). (Choose two. What two commands can you apply on the interfaces? (Choose two. with the MAC address 0000. E.ac03. spanning-tree portfast B. DSW1: change bridge priority but value is 0. spanning-tree portfast default C. DSW1: change bridge priority to 4096 (lowest). NA Answer: AD 278. DSW1: change port priority but in global configuration mode. DSW1: change bridge priority but command is priority root.0c07.Which IOS configuration command is required to configure a VLAN as a private VLAN? A. B.

10.10.10.255.10.10.10.10. HSRP allows one router to automatically assume the function of the second router if the second router fails C. The safer .255.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 .10 D. easier way to help you pass any IT exams.255. The HSRP group number F. To assign the HSRP router priority in a standby group.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10.2 255. C. the router with the lowest priority in an HSRP group would become the active router E. When two routers in an HSRP standby group are configured with identical priorities.255.HSRP has been configured between two Company devices.10 Switch_B(config-if)#standby 1 track interface fa 1/1 B.255. Which of the following describe reasons for deploying HSRP? (Choose three) A. HSRP provides redundancy and fault tolerance B. The VRRP group number E.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. The default priority of a router is zero (0).  C.10 C.0 Switch_B(config-if)#standby 1 priority 195 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. the router with the highest configured IP address will become the active router Answer: CE 282.10.255. Switch_B(config-if)#ip address 10. HSRP allows one router to automatically assume the function of the second router if the second router starts D. The no standby priority command assigns a priority of 100 to the router D.2 255.10.10. Switch_B(config-if)#ip address 10. the standby group-number priority priority-value global configuration command must be used.10.255. B. Switch_B(config-if)#ip address 10. The HSRP router number D.255.Refer to the exhibit.2 255.10.10.2 255.Which two statements about the HSRP priority are true? A. Assuming that preempting has also been configured. HSRP provides redundancy and load balancing Answer: ABD 281.10. Switch_B(config-if)#ip address 10. The active router number Answer: E 280. Which configuration on the HSRP neighboring device ensures that it becomes the active HSRP device in the event that port fa1/1 on Switch_A goes down? A.

The Standby delay is 3 seconds Answer: CDE 105 / 121 . standby group number does not match VLAN number C.  Switch_B(config-if)#standby 1 ip 10. The Standby priority is 100 F. Two HSRP groups are configured C. IP addressing is incorrect D. Standby B. incorrect standby timers Answer: A 285. incorrect priority commands E. Which two items are most likely the cause of Switch1 not becoming the active router? (Choose two) A. standby group number does not match VLAN number C. The Standby hello time is 2 seconds B. easier way to help you pass any IT exams. booting delays B. IP redirect is disabled Answer: AD 286. What is the most likely cause of this status? A. After the two switches have finished rebooting. IP addressing is incorrect D.10.HSRP was implemented and configured on two switches while scheduled network maintenance was performed. Idle E. Backup F. you notice via show commands that Switch2 is the HSRP active router. Init Answer: ACF 284. The Standby track interface priority decrement is 10. Established C. The Standby hold time is 10 seconds E. this is normal operation B. premption is disabled E. Three switches are configured for HSRP.Which three statements are true of a default HSRP configuration? (Choose three) A.10. Switch1 remains in the HSRP listen state. The safer .What are three possible router states of HSRP routers on a LAN? (Choose three) A. incorrect standby timers F.10 Switch_B(config-if)#standby 1 track interface fa 1/1 Answer: C 283. Active D. D.Refer to the exhibit.

learn D. speak C. The safer . HSRP D. init F. standby Answer: B 288. Passive D.Which protocol specified by RFC 2281 provides network redundancy for IP networks. Extended VLANs doesn’t have VLAN assigned in MAC address table. Desirable E. active B. Layer 4 Answer: B 292.) A. NA D. Long path cost is 64 bits B. easier way to help you pass any IT exams. Layer 2 C. STP Answer: C 289. Every entry in MAC address table has VLAN assigned B. Layer 1 B.  287. Short path cost is 32 bits 106 / 121 .What statements about STP path cost are true? (Choose two. ensuring that user traffic immediately and transparently recovers from first-hop failures in network edge devices or access circuits? A. IRDP C.What is the default mode for LACP EtherChannel when configured? A.What statement about MAC address table is true? A. C. NA Answer: A 290. Off Answer: C 291. On B. ICMP B.Which of the following HSRP router states does an active router enter when it is preempted by a higher priority router? A. listen E.Which layer private VLAN partition the broadcast domain? A. Active C. Layer 3 D.

NA Answer: AC 295. A.question about LACP priority. VSL Protocol (Virtual Switch Link) D. switchport trunk allowed vlan add 3. switchport trunk allowed vlan remove 55 C. C.In a Virtual Switching System. DSW1 and DSW2 need to communicate with each other to determine the role. NA C.  C. A. NA Answer: BC 297. LACP Answer: C 294. Frame has CRC D. NA C. NA Answer: A 298. LACP priority is removed from EtherChannel (don’t remember exactly 107 / 121 . The safer . Source ports SPAN work on L2 (Layer 2). switchport trunk allowed vlan except 55 D. LACP priority is used to determine which port is used to form the EtherChannel B. STP B. Destination and source port SPAN works on L2 (Layer 2) B.Which statement about frame SPAN is true? A. NA D. MST uses long path cost D.) A. Destination ports SPAN work on L2 (Layer 2). remove 55 B. aaa authorization exec default group radius B. Destination and source port SPAN don’t work on L2 Answer: A 296. NA C.AAA question about the command used to login a user and set immediate access to privilege mode. Default path cost is short Answer: CD 293. Which technology is it using? A.Which two commands is used to remove VLAN 55 from the trunk port? (Choose two.Which two statements about frame LLDP is true? A. D. Frame has destination multicast address B. easier way to help you pass any IT exams.

easier way to help you pass any IT exams. 0x8200 Answer: A 304. 0x8100 C.cisco. 0x8a88 C. Duplex D. LACP priority is used to determine which port is put in standby mode Answer: D 299. 0x8a88 B.com/c/en/us/td/docs/switches/datacenter/ 301. 0x8b45 D. Is the default mode on Cisco switches D. Port mode B. About port priority.What statement is true about PVST? A. Core switch is connected to 2 distribution switches which 108 / 121 . RSPAN VLAN carries only RSPAN traffic B. Port cost C.What is the value of the TPID/tag protocol identifier in dot1q? A. 0x8b45 D. STP is the default mode on Cisco switches Answer: A 302. On a switch there can be only one RSPAN VLAN C. VLAN Answer: AE Explanation: See “compatibility requirements” http://www. The safer .question about RSPAN A. DTP E.EXHIBIT INCLUDED.Which two operational attributes can be checked for EtherChannel ports that are in err-disabled state? A. PVST+ is the default STP mode on Cisco switches B. RSPAN VLAN carries RSPAN traffic along multiple switches D. NA Answer: C 300. 0x8100 B. There was a command about LACP priority D. Rapid PVST+ is the default STP mode on Cisco switches C.What is the value of the TPID/tag protocol identifier of QinQ? A. 0x8200 Answer: A 303.  C.

Now admin has entered "no bpdu guard enable" command. MEC D. How can the port be brought back to operational status? A. NA Answer: A 306. NA Answer: AB 307. PC1 is connected to DSW1 and DSW2 root bridge. DSW2: interface g1/0 E. It had BPDU guard configured and received BPDU.Which two configurations cause the frames to be tagged? (Choose two.) A. DSW1: spanning-tree port priority 16** B. shutdown + no shutdown B.What VSS technology allows you to share downstream resources? A. LACP B.) A.question about port which was put into error disabled state. There is an EtherChannel trunk between DSW1 and DSW2. "couple of answers" around enabling errordisable autorecovery C. (Choose two. easier way to help you pass any IT exams. Change in port priority so traffic goes through DSW1 to DSW2. PAgP C. DSW1: interface g1/0 C. interface gi 0/1. DSW1: spanning-tree port priority 0 Answer: AB 305. EOA Answer: C 308. Default port priority is configured. Link connected from PC1 to DSW2 is 4Gbps and DSW1 is 10gbps. interface with access and voice VLAN configured to 116 D. NA D.  are connected to 2 access switches.116 encapsulation dot1q B. The safer .EtherChannel load balancing with an exhibit. DSW2: spanning-tree port priority 16 D. SERVER SERVER || SWITCH ||||||||||| SWITCH | HOST Which EtherChannel load balancing algorithm should be used to optimize the EtherChannel links between switches? 109 / 121 . trunk allowed vlan 116 C.

All non-root ports of the Access Switches. Destination IP D. 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. switchport trunk allowed vlan 1-80.Refer to the exhibit.) A. Access Switches to uplink ports to Distribution Switches D.after applying the question command: switchport trunk allowed vlan 1.80.80. Answer: AB 310. NA Answer: AB Explanation: A & B are right 1. Source MAC B. spanning-tree mstp vlan 10. spanning-tree mst 1 priority 4096 E. Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two. easier way to help you pass any IT exams. 20 root primary Answer: BD 311.  A.) A. B.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1. spanning-tree mst 1 priority 1 F.99-250 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 1 now after applying “except 100”: Switch(config-if)#switchport trunk allowed vlan except 100 110 / 121 . Downstream links from Distribution to Access Switches C. switchport trunk allowed vlan remove vlan 100 B.101-250 C. The safer . spanning-tree mst 1 root primary C.) A.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. 20 priority root D. switchport trunk allowed vlan except vlan 100 D. 80. On Layer 3 Switches.switchport trunk allowed vlan 1. 99. spanning-tree mstp 1 priority 0 B. Source-dest MAC C.EXHIBIT . spanning-tree mst vlan 10.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two. Destination MAC Answer: A 309.

2 and uses UDP port 1985 B.  Switch(config-if)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802.A question about port number and multicast address of HSRP.What is the benefit of UDLD? A.EXHIBIT INCLUDED. na C. The spanning-tree mode is IEEE. na Answer: A 316.When no spanning-tree bpdu guard enable is configured in f0/7. which is against what is required in the question 312. which is true? (There’s an exhibit that shows f0/7 receive BPDU. removes loops D.0. NA Answer: A 314.0. The command spanning-tree mode IEEE was implemented. provides backup for fiber B. We have to configure shutdown and no shutdown. NA D.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-99. The safer . na 111 / 121 . An exhibit with spanning-tree.A question about the priority of a Stackwise switch. (CONCEPT ONLY) A. help in preventing loops C.) A.101-1005 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 none you can see that except 100. NA Answer: AB 315. HSRP uses multicast address 224. (CONCEPT ONLY) A.) A. allowed all vlans except 100. easier way to help you pass any IT exams. na D. B. C. (Choose two. NA D. Protocol used was IEEE. Master member is selected based on member's priority B. determines switch path Answer: B 313. Have to use errdisable recovery C. B.

A question about the port number and multicast address of GLBP.  C.0.com D. na C. na Answer: A 319. na D. The safer . A. B. (CONCEPT ONLY) A. (CONCEPT ONLY) A. easier way to help you pass any IT exams. http://bbs. na D.Behavior of an access port when a tagged packet is received other than the access VLAN value. na D. VRRP uses multicast address 224.only one can be elected on a switch.0.18 and uses UDP port 112. na C.0. B. Tag is removed and packet is forwarded of the VLAN mentioned in the tag.A question about the number of Active Virtual Gateways (AVG) that can be used. na Answer: A 317.A question about the port number and multicast address of VRRP.Refer to the exhibit 112 / 121 . na Answer: A 318. GLBP uses multicast address 224. tag is removed and packet is forwarded on the VLAN of the access port C. (CONCEPT ONLY) A. na C. na D. na Answer: A 320. packet is dropped Answer: D 321.hh010. B.102 with UDP port 3222.0. 1 . B.

On the access layers root facing ports D. 1518 bytes D. B. The safer .1Q frame? A. In which two locations should the Spanning Tree protocol root guard feature be implemented? (Choose two. All links go down C. 64 bytes B. NA Answer: A 323.) A.  A network engineer deployed an older switch with the same spanning-tree priority as the existing root. which caused a network outage. Other interface will recover.A question about UDLD. link stays up D.Which option is the maximum frame size for an 802. On Layer 3 boundaries in the distribution layer E. 68 bytes 113 / 121 . On all of non-root switch facing ports of the access layer C.1Q frame A.Which option is the minimum frame size for an 802. Answer: AB 322. easier way to help you pass any IT exams. 64 bytes B. On the designated root switch downlinks to the access layer. Globally on all network switches. 1522 bytes Answer: D 324. udld setting udld setting int f0/5 udld setting aggressive What happens if interface f0/5 has been damaged? A. 68 bytes C. B.

The safer , easier way to help you pass any IT exams. 

C. 1518 bytes
D. 1522 bytes
Answer: B

325.What SPAN configuration is required to enable on a switch?
A. A monitor VLAN is created for the SPAN traffic.
B. Configure a source and destination port
C. Disable VTP pruning on trunk links
D. NA
Answer: B

326.About VRRP configuration.
Which statement is true? [Question just short like this because in each option will have CLI for config 1
group of VRRP]
A. Switch-A(config)# interface vlan 1
Switch-A(config-if)# ip address 192.168.1.10 255.255.255.0
Switch-A(config-if)# vrrp 1 ip 192.168.1.1
Switch-A(config-if)# vrrp 1 priority 200
B. Switch-A(config)# interface vlan 1
Switch-A(config-if)# ip address 192.168.1.11 255.255.255.0
Switch-A(config-if)# vrrp 2 ip 192.168.1.1
Switch-A(config-if)# vrrp 2 priority 100
C. Switch-A(config)# interface vlan 2
Switch-A(config-if)# ip address 192.168.1.10 255.255.255.0
Switch-A(config-if)# vrrp 1 ip 192.168.1.10
Switch-A(config-if)# vrrp 1 priority 100
D. na
Answer: A

327.question about voice vlan?
A. Disable by default
B. enter on
C. CoS value of 5
D. Need manually enable
Answer: AC
Explanation:
The Answer should be A and C. The Default CoS value is tagged by 5

328.Your company wants to connect an internal switch to the uplink provider switch.
What method / feature / functions you need to enable to prevent initial / potential broadcast of internal
information/topology? (Forgot the correct wording)
A. BPDU Filter
B. BPDU Guard
C. BPDU Loop

114 / 121

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D. BPDU bridge
Answer: A

329.Ether Channel question.
Which combination are possible? (Question looks incomplete)
A. passive-passive
B. desirable-active
C. passive-auto
D. desirable-desirable
Answer: D

330.EtherChannel guard.
What happens to the port when it’s misconfigured?
A. channel gets disabled
B. Goes into err-disable
C. shutdown
D. Works normal
Answer: B
Explanation:
err-disable

331.EXHIBIT INCLUDED.
About Spanning-Tree. spanning-tree extend system-id spanning-tree mode PVST+ spanning-tree
backbonefast
The question was something like what does the configuration do?
A. It used extended VLAN
B. It used to protect Root switch
C. It enables the switch to set dynamic extended System IDs.
D. NA
Answer: C

332.A question about CDP.
A. CDP works on L2
B. CDP uses TLV to deal with native VLAN
C. CDP works on L1
D. CDP with SNMP
E. CDP sends extended vlan info
Answer: AB

333.A question about EtherChannel compatibility modes. (Choose two.)
A. passive-passive
B. active-active
C. desirable-desirable
D. active-passive

115 / 121

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E. active-desirable
Answer: CD

334.There was an EtherChannel configured and one of the port was used as SPAN destination.
What will be the result?
A. the etherchannel will not be operational because the port cannot be used as SPAN destination
B. etherchannel will discard the port used
C. the etherchannel will shutdown
D. NA
Answer: B

335.A question about interface gi 0/1 being in errdisable and how do you find the reason for it being
disabled
A. show interfaces g0/1 status
B. show run interface g0/1
C. show ip int brief
D. show log
Answer: D

336.A question about the behaviour of VLAN 1 BPDUs in a situation where the Native VLAN configured
as VLAN 99 and the Native VLAN is Tagged
A. VLAN 1 BPDUs Travel across VLAN 99 Untagged
B. VLAN 1 BPDUs Travel across VLAN 99 tagged
Answer: AB

337.Technician moves PC from one switch port to another switch port. After the move, the new switch port
goes errdisabled.
Why?
A. Security violation
B. Duplex mismatch
C. different vlan
D. na
Answer: A

338.What do subordinate switches in a switch stack keep?
A. Subordinate switches keep their own spanning trees for each VLAN that they support.
B. Subordinate switches keep entire VLAN database
C. Store running config all the switches
D. na
Answer: A

339.802.1Q trunking, what does it do?
A. Encapsulate frame with VLAN tag
B. Makes the frame size 1596

116 / 121

It uses Loop free protocol for switching D.. It is functionally equivalent to Cisco Express Forwarding B. It runs on the data link layer B... It runs on the network layer C. Allows 8-bits in VLAN tag header Answer: AC 340. Enabled on Cisco devices by default Answer: AC 343..Which two statements apply to topology-based switching? A. C.. It is the preferred switching mode in Cisco multilayer switches C. 117 / 121 . It is not enabled by default on Cisco devices D. disabled by default Answer: AB 344. NA Answer: AC 342... Changing the SDM template will not disturb switch operation. error disable (shut down) B.What happens when a port configured with root-inconsistent receives a superior BPDU? A. B. BPDU Guard.. Root Guard. D. Adds 32-bit header D.. BPDU Filter. Answer: B 345. port disabled D. Loop Guard.. easier way to help you pass any IT exams..  C. You can verify the SDM template that is in use with the show sdm prefer command D. send a trap C. The safer . loop inconsistant Answer: AB 341.What are the possible results of port-security? A.Which two statements apply to LLDP? A. C.Which two statements about SDM templates are true? A. They are used to allocate system resources B..

(Choose two. It inserts a tag between the source address and length field. show status (or show interface [interface] status) Answer: AB 118 / 121 .1Q). Shutdown.) A. A..What happens when a destination SPAN port that is configured as EtherChannel receives traffic? A.) A. show log B. It adds an extra of 32 bits to the frame. easier way to help you pass any IT exams. Answer: AB 348.Storm control default violation.  Answer: 346.. The safer . Answer: A 349. disabled Answer: A 347.How to check the cause for an error disable in a interface after being connected? (Choose two...question about the characteristics of dot1Q (or 802. B.. Nothing.. B.

Answer: 119 / 121 .A question about VLAN STP BPDU. VLAN 1 STP BPDU untagged through VLAN 1 C. VLAN 1 STP BPDU untagged through VLAN 1 and 99 Answer: BD 351. when in trunk native VLAN is 99 A. VLAN 1 STP BPDU untagged through VLAN 99 E. VLAN 1 STP BPDU tagged through VLAN 99 D. VLAN 1 STP BPDU tagged through VLAN 1 and 99 F. VLAN 1 STP BPDU tagged through VLAN 1 B. easier way to help you pass any IT exams.  350. The safer .

easier way to help you pass any IT exams. The safer . Answer: 120 / 121 .  352.

Answer: 121 / 121 .  353. The safer . easier way to help you pass any IT exams.