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

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

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

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

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

  A. What would cause the output to show only the single neighbor? A. The trunk's native VLAN must be changed to something other than VLAN 1. Traffic from VLAN 4 is not sent to the SPAN destination interface. use of the destination MAC address results in the choice of the same link in the channel each time. Use of source addresses or IP addresses can result in a better load balance. but it has several routing neighbor relationships.html 9. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs. The safer . easier way to help you pass any IT exams. then each router will only have the 7 / 121 .Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. Adjust the EtherChannel load-balancing method based on source IP addresses. D. destination mode. The mode you select applies to all EtherChannels that you configure on the switch.A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. or Layer 4 port numbers. if the traffic on a channel only goes to a single MAC address (which is the case in this example. 39. All VLAN traffic is sent to the SPAN destination interface. or both. Traffic from VLANs 1 to 8. This command is configured globally: monitor session 2 filter vlan 1 .2/25ew/configuration/guide/conf/span. Answer: A Explanation: If all of the routers are connected to each other using a layer 2 switch.5 . 9 Reference: http://www.cisco. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle. C. B. Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle.cisco. 52 What is the result of the implemented command? A. Use the option that provides the greatest variety in your configuration. 39.8. Answer: E Explanation: EtherChannel load balancing can use MAC addresses.html#wp1066836 10. and 52 is replicated to the SPAN destination port. and either source mode. Reference: http://www. IP addresses.com/c/en/us/support/docs/lan-switching/etherchannel/12023- 4. Adjust the EtherChannel load-balancing method based on destination IP addresses. Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server. E.com/c/en/ us/td/docs/switches/lan/catalyst4500/12. D. Answer: E Explanation: The "monitor session filter" command is used to specify which VLANS are to be port mirrored using SPAN. C. The routers are connected via a Layer 2 switch.html/ index. Cisco Express Forwarding is enabled locally. since all traffic is going to the same web server). D. For example. 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 . IP routing is disabled on neighboring devices. E. C. The engineer notices only a single neighbor that uses Cisco Discovery Protocol. B. Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices. B.

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

You must configure extended-range VLANs manually on each network device. Ensure that all switches run the same Cisco IOS version. The safer . VTP authentication is required when using extended VLANs because of their ability to cause network instability. C. Reference: http://www. Enable VTP version 3. Switch A.cisco. What should be configured for extended VLANs? A. C. the extended VLANs are not being propagated to other VTP switches. Switch C receives VLAN information from the VTP server Switch A. but Switch B does not receive any VLAN information.1SY/config_guide/sup2T/vtp .cisco. easier way to help you pass any IT exams.Refer to the exhibit. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements. B. B.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52. The trunk between Switch A and Switch B is misconfigured. What is the most probable cause of this behavior? A.com/en/US/docs/switches/lan/ catalyst6500/ios/15. Answer: B Explanation: VTP version 1 and VTP version 2 do not propagate configuration information for extended. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use. Answer: A Explanation: VTP transparent switches do not participate in VTP. the VLANs in the range 1006 to 4094 are removed from VTP control.pdf 14. D.range VLANs (VLAN numbers 1006 to 4094). and C are trunked together and have been properly configured for VTP.  13. VTP does not support extended VLANs and should be manually added to all switches.After implementing VTP. Switch B is configured with an access port to Switch A.shtml 9 / 121 . Switch B is configured in transparent mode. The VTP revision number of the Switch B is higher than that of Switch A. while Switch C is configured with a trunk port to Switch B. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2. which supports extended VLAN propagation. Reference: http://www. D. VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094). If you convert from VTP version 3 to VTP version 2. B.

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

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

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

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

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

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

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

1Q or ISL trunking encapsulation. If extended VLANs are configured. C. but it does not appear in plain text in the configuration. Another switch in the domain has a higher revision number than the server.2_52_se/config uration/guide/swvtp.PDF 36. Instead. VTP versions 1 and 2 propagate only VLANs 1 to 1005.com/servlet/JiveServlet/previewBody/14792-102-1. it takes up to 4 hours propagate. D. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. Support for extended range VLAN (VLANs 1006 to 4094) database propagation. VTP must be stopped and restarted on the server. What is the problem? A.57313/ Dynamic%20Trunking%20Protocol. After each update to the VTP server.  Explanation: Switches such as the Catalyst 3550 that are capable of either 802.cisco.After configuring new data VLANs 1020 through 1030 on the VTP server. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command. Reload the new switch. the network engineer notices that the new switch is not receiving the list of VLANs from the server. B. a network engineer notices that none of the VTP clients are receiving the updates. Restart the VTP process on the new switch. B. The safer . you can directly configure the password secret key. C. E.A network is running VTPv2. you cannot convert from VTP version 3 to version 1 or 2. Reference: https://learningnetwork. Reference: http://www. easier way to help you pass any IT exams. After verifying all VTP settings. Which action resolves this problem? A. D. 37. the key associated with the password is saved in hexadecimal format in the running configuration. The VTP server must be reloaded.com/en/US/docs/switches/lan/catalyst3560/software/ release/12. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? 20 / 121 .html#wp1316856 38. The first thing that should be done is to verify that the trunk ports are connected and up.A network engineer is extending a LAN segment between two geographically separated data centers. Verify connected trunk ports.cisco. The VTP version number must be set to version 3. When hidden. 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. the secret key from the password string is saved in the VLAN database file. You must reenter the password if you enter a takeover command in the domain. When you enter the secret keyword. Reload the VTP server.

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

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

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

VTP summary advertisements are sent out of all ports with the new domain name. PVRST+ runs STP instances for each VLAN and does not take into consideration the physical topology that might not require many different STP topologies. C.-------.dionicio. If all switches currently have the default VTP domain name "null". PVST+ E. In this setup. Which Spanning Tree Protocol should be used to reduce switch resources and managerial burdens that are associated with multiple spanning-tree instances? A. If the switch hears a VTP advertisement it will automatically learn the VTP domain name. The switch with the non-default domain name restores back to "null" upon reboot.216 P2p Po23 Altn BLK 9 128. All other switches with the default domain name become VTP clients. Figure 3-15 shows a common network design. a switch will have a domain name of NULL and no password.net/configuring-cisco-vtp/ 47. uses a minimum number of STP instances to match the number of physical topologies present. which statement describes what happens when a domain name is configured on one of the switches? A. Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database.A new network that consists of several switches has been connected together via trunking interfaces. VLANs. RSTP B.---. easier way to help you pass any IT exams.html 46. D. Switches with higher revision numbers does not accept the new domain name.Po21 Root FWD 9 128.com/en/US/docs/ios/lanswitch/command/reference/lsw_s2. Answer: C Explanation: By default. PVST C.Nbr Type ------------------. and the configuration revision number.--. on the other hand.--------. Contained in a summary advertisement: VTP version Domain name Configuration revision number Time stamp MD5 encryption hash code Reference: https://rowell. 24 / 121 .  Aging Time 300 sec Interface Role Sts Cost Prio. B.A network engineer is setting up a new switched network.1w RST algorithm to multiple spanning trees. The network is expected to grow and add many new VLANs in the future. MST D. 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. The safer . connected to two Building Distribution submodule Switches D1 and D2.--------------------------. featuring an access Switch A. MST.cisco. RPVST+ Answer: C Explanation: Multiple Spanning Tree (MST) extends the IEEE 802.232 P2p Reference: http://www.

2_55_s e/configuration/guide/swsdm. the switch SDM templates prioritize system resources to optimize support for certain features.Which SDM template disables routing and supports the maximum number of unicast MAC addresses? A. SDM templates are used to configure ACLs that protect networks and specific hosts from unnecessary or unwanted traffic. the switch SDM 25 / 121 . SDM templates are used to create Layer 3 interfaces (switch virtual interfaces) to permit hosts in one VLAN to communicate with hosts in another VLAN. D.Which statement about the use of SDM templates in a Cisco switch is true? A. for example. default D. SDM templates are used to configure a set of ACLs that allows the users to manage the flow of traffic handled by the route processor. 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. Reference: http://ciscodocuments. The 1000 VLANs map to two MST instances.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/ release/12.cisco. VLAN B. C. Rather than maintaining 1000 spanning trees. 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. routing Answer: A Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages. E.pdf 49. each switch needs to maintain only two spanning trees. B.com/2011/05/chapter-03-implementing-spanning- tree_19. depending on how the switch is used in the network. access C.  there are 1000 VLANs. SDM templates are used to configure system resources in the switch to optimize support for specific features. easier way to help you pass any IT exams. The safer . SDM templates are configured by accessing the switch using the web interface.blogspot. depending on how the switch is used in the network. reducing the need for switch resources. Reference: http://www. You can select a template to provide maximum system usage for some functions. use the default template to balance resources. and use access template to obtain maximum ACL usage.html 48. Figure 3-15: VLAN Load Balancing Figure 3-15 illustrates two links and 1000 VLANs.

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

com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/M ACAddress. A MAC address or host moves between different switch ports.Which option is a possible cause for an errdisabled interface? A.cisco.com/en/US/docs/ios/lanswitch/command/reference/lsw_m1. when is a syslog message generated? A. easier way to help you pass any IT exams. Answer: A Explanation: mac-address-table notification mac-move To enable MAC-move notification. cable unplugged C. If a VLAN is not specified. The safer . To disable MAC-move notification.html 52.If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port. A new MAC address is removed from the content-addressable memory. security violation Answer: D Explanation: There are various reasons for the interface to go into errdisable. mac-address-table notification mac-move [counter [syslog]] no mac-address-table notification mac-move [counter [syslog]] Syntax Description counter (Optional) Specifies the MAC-move counter feature. use the no form of this command. B. More than 64 MAC addresses are added to the content-addressable memory.  MAC aging. the aging specification applies to all VLANs. syslog (Optional) Specifies the syslogging facility when the MAC-move notification detects the first instance of the MAC move. Reference: http://www. Usage Guidelines MAC-move notification generates a syslog message whenever a MAC address or host moves between different switch ports. routing loop B. use the mac-address-table notification mac-move com. D. 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 . Reference: http://www.html 53.mand in global configuration mode. STP loop guard D. C.cisco. A new MAC address is added to the content-addressable memory.

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

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:

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0 B. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN. allowing up to 4. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. 8-bit B.Refer to the exhibit. 1 C. If more than one VLAN is needed. The safer .com/en/US/docs/switches/lan/catalyst6500/ios/12. 66. 2 D.1q frame? A. All other values may be used as VLAN identifiers. 16-bit D.cisco.What is the size of the VLAN field inside an 802.wikipedia. The hexadecimal values of 0x000 and 0xFFF are reserved.1Q 65.094 VLANs Reference: http://en. the port should be configured as a trunk port. easier way to help you pass any IT exams.2SX/configuration/guide/vtp.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. html 64.org/wiki/IEEE_802. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 . 12-bit C.  http://www.

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

Obviously. The safer . Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). so even though Cisco IOS will accept both.1_22_ea11x/co nfiguration/guide/swvoip.com/en/US/docs/switches/lan/catalyst2950/software/ release/12. but not automatically disabled when a voice VLAN is removed? A.1Q 69.wikipedia. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports.html 68. within the Ethernet header B. ignoring the switchport access VLAN 10 command.org/wiki/IEEE_802. 67.  C. the port has been configured both as a trunk and as a switchport in data vlan 10. the Port Fast feature is not automatically disabled. Exhibit D Answer: A Explanation: In this case. spanning tree D. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. Reference: http://www.1Q does not encapsulate the original frame. When you disable voice VLAN.Which feature is automatically enabled when a voice VLAN is configured.In which portion of the frame is the 802.1Q tag in an Ethernet frame 802. the port will actually be used as a trunk. 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. port-security C. Exhibit C D.cisco. within the Ethernet source MAC address Answer: A Explanation: Insertion of 802. within the Ethernet FCS D. easier way to help you pass any IT exams. The Port Fast feature is automatically enabled when voice VLAN is configured. within the Ethernet payload C.Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a 34 / 121 . for Ethernet frames. portfast B. a port can not be both. Instead.

Change VTP mode to server and enable 802. All switches in the network receive all broadcasts. The safer . VLANs 2 1001 are pruning eligible.1Q 35 / 121 .Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A.com/c/en/us/ support/docs/lan-switching/vtp/1055821. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic.com/VTP-Pruning.  switch? A. The network engineer found that the engineering VLAN is missing from the database.1q. VLANs 2-1001 D. Enable VTP pruning and disable 802. Both VTP versions 1 and 2 supports pruning. there are occasions when VTP can create unnecessary traffic.1q. storm control D. D. VLANs 1-1001 B. even in situations in which few users are connected in that VLAN. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. Then. However. B. VTP pruning B. port-security C. VLANs 2-4094 Answer: C Explanation: VTP pruning should only be enabled on VTP servers. Update the VTP revision number.html#vtp_pruning 71. Disable VTP pruning and disable 802. you will need to enable 802. 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 1-4094 C. Which action resolves this problem? A.1q. Reference: http://www.orbit-computer-solutions. all the clients in the VTP domain will automatically enable VTP pruning. C. By default.php 70. but VLAN 1 can't be pruned because it's an administrative VLAN. Reference: http://www. Answer: C Explanation: Only VTP servers can add new VLANs to the switched network.Refer to the exhibit. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server.cisco. The users in an engineering department that connect to the same access switch cannot access the network.

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 . easier way to help you pass any IT exams. D. Manually force trunking with switchport mode trunk on both switches. 73. but users in company A are not able to access network resources in company B when DTP is enabled. The safer . Disable DTP and document the VTP domain mismatch. Which action resolves this problem? A.  trunking to pass this new VLAN along to the other switches. C. 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 network switches for two companies have been connected and manually configured for the required VLANs. 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. 72. B. Delete vlan.dat and ensure that the switch with lowest MAC address is the VTP server. Enable the company B switch with the vtp mode server command.

802.Which statement about using native VLANs to carry untagged frames is true? A.asp?p=29803&seqNum=3 75.1Q and ISL. Failure to do this causes Cisco switches to 37 / 121 . If you have a native VLAN mismatch. both with native VLAN mismatch. you must ensure that you choose a common native VLAN for each port in the trunk. dot1q VLAN trunking D. Consider that this is a multivendor environment. D. A multilayer switch has been configured to send and receive encapsulated and tagged frames.Refer to the exhibit. Cisco Discovery Protocol version 2 carries native VLAN information. D. Link Aggregation Protocol at the access layer C.1Q trunks.com/articles/article. VLAN ID 1 should not be used for management traffic because its unsafe. 74. Cisco Discovery Protocol version 1 carries native VLAN information. VLAN spanning-tree in SW-2 is configured.  traffic for different broadcast domains that are mutually isolated. 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. There are 2 different methods for trunking. Cisco Discovery Protocol version 3 carries native VLAN information. If you use 802. Of these. PPP encapsulation with a virtual template B. easier way to help you pass any IT exams. Answer: C Explanation: Explanation/Reference: Here we see that the native VLAN has been configured as 2013 on one switch. spanning-tree bpdu-filter is enabled.ciscopress. you will see CDP error messages on the console output. B. Which Cisco IOS switching feature can be used to achieve the task? A.1q trunks are on both sides. only 802. The safer . VLAN 2013 on the multilayer switch is configured as the native VLAN. Reference: http://www. Which option is the cause of the spanning-tree error? A. but versions 1 and 2 do not. 802.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. C. but version 2 does not. but 1 (the default native VLAN) on the other switch. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information. Answer: A Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches. but version 1 does not. C. B.

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

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

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

the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch. on: PAgP will not run. 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 safer . 41 / 121 . Which action can the engineer take to resolve this issue? A. eventually to form the aggregation channel with the peer. which is only a PAgP mode. however. This is similar to the auto mode in PAgP. and fa0/15 are all in Port Channel 12. This is similar to the desir. off: PAgP will not run. Passive: The switch does not initiate the channel but does understand inbound LACP packets. 4. and on. desirable. The link aggregate is formed if the other end runs in LACP active or passive mode. The formation of a channel is desired and ini. The channel is forced to come up. desirable.In other words. Active: We can form an aggregate link and initiate the negotiation. Disable EtherChannel load balancing. Link Combination Control Protocol B. auto: PAgP is running passively.Refer to the exhibit. auto. We do not send or understand the LACP packet. traffic is still slow. it is not initiated. This is similar to the off state for PAgP. 2.tiated. 83. fa0/14. Port Aggregation Protocol C. which is operating in desirable mode. Only the combinations auto-desirable.  A. 3. we see that fa 0/13.able mode of PAgP. Port Combination Protocol D. the switch neither sends the LACP packet nor processes any inbound LACP packet. Off: The link aggregation is not formed. To increase bandwidth. B. Upgrade the switch IOS to IP services image. The formation of a channel is desired. easier way to help you pass any IT exams. 1. The peer (in active state) initiates negotiation (when it sends out an LACP packet) which we receive and answer. Link Aggregation Control Protocol Answer: B Explanation: PAgP modes are off.desirable. The channel is forced to remain down. desirable: PAgP is running actively. Users of PC-1 experience slow connection when a webpage is requested from the server. This is similar to the on state for PAgP. and on-on will allow a channel to be formed. In this example. as shown here: Server_Switch#sh etherchannel load-balance EtherChannel Load-Balancing Operational State (src-mac): Non-IP: Source MAC address IPv4: Source MAC address IPv6: Source IP address Server_Switch# However. .

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

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

802.html 88.ning tree instance information is contained in MSTP records (M-records). B.1d BPDU. what is the total number of spanning-tree instances running on the switch? A. in which all the spanning tree instances are independent. All other MST instances are numbered from 1 to 4094. and the special 0 instance. Reference: http://www.1d to communicate.1d to communicate.1D BPDU after the port migration-delay timer has expired. 802.1d BPDU.What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802.1D BPDUs. which are encapsu.1d BPDU and eventually the two switches run 802. it does not respond with a 802. easier way to help you pass any IT exams.1d BPDU? A.1d understands RSTP BPDUs because they are the same version. and CST spanning trees: An IST is the spanning tree that runs in an MST region. 2 C.1d BPDU. but when a RSTP switch receives an 802. In the case for this question. MST maintains multiple spanning tree instances.1D switch and starts using only 802. it restarts the timer and starts using RSTP BPDUs on that port.1D switches.1d does not understand RSTP BPDUs because they are different versions. All of the other span. Because the MST BPDU 44 / 121 . D. CIST. RSTP selectively sends 802. the switch processes all BPDUs received on that port and ignores the protocol type.  protocol. it responds with a 802. 3 D. as opposed to PAgP. it responds with an 802. there will be the 2 defined MST instances.1d BPDU and eventually the two switches run 802. 802. 1 B.1d to communicate. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent). When a port is initialized. it does not respond with a 802. C. 87. for a total of 3 instances. The IST is the only spanning tree instance that sends and receives BPDUs. Answer: A Explanation: For backward compatibility with 802. but when a RSTP switch receives a 802.1d understands RSTP BPDUs because they are the same version.com/c/en/us/td/ docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/spantree.1d BPDU. While this timer is active. 4 Answer: C Explanation: Unlike other spanning tree protocols. Instance 0 is a special instance for a region. and RSTP BPDUs are sent. but when a RSTP switch receives a 802. The safer . MST establishes and maintains IST. known as the IST. However.1D configuration BPDUs and TCN BPDUs on a per-port basis. if the RSTP switch is using 802. If the switch receives an 802.When two MST instances (MST 1 and MST 2) are created on a switch.1d does not understand RSTP BPDUs because they are different versions. it assumes that it is connected to an 802. which is Cisco proprietary. but when a RSTP switch receives a 802.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired. 802.cisco.lated within MST BPDUs. Within each MST region.1d BPDU and eventually the two switches run 802.1d BPDU.

The safer .cantly reduced. Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. B. D. 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.cisco. and so forth. but each MST in. Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. 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.stance has its own topology parameters. the number of BPDUs that need to be processed to support multiple spanning tree instances is signifi. all VLANs are assigned to the IST. The CST interconnects the MST regions and single spanning trees. configurable in increments of 16. f1/0 and f1/1 have the same end-to-end path cost to the designated bridge. The possible priority range is 0 through 240 (default 128).com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. By default. MST instance 1 in region A is independent of MST instance 1 in region B. root path cost. for example. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports. Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0.2SX/configuration/ guide/book/spantree. An MST instance is local to the region. A lower path 45 / 121 . even if regions A and B are interconnected. easier way to help you pass any IT exams. A CIST is a collection of the ISTs in each MST region. Answer: C Explanation: If a loop occurs. STP considers port priority when selecting a LAN port to put into the forwarding state. such as root bridge ID.html 89.  carries information for all instances.Refer to the exhibit. All MST instances within the same region share the same protocol timers. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16. Reference: http://www. C. If all LAN ports have the same priority value.

The switch priority value is zero. C. The bridge priority is 1 and all ports are forwarding. it has the lowest priority value for VLAN 1.html#wp1020666 91. Reference: http://www. easier way to help you pass any IT exams. the more likely the switch will be chosen as the root switch.cisco.Refer to the exhibit.1_9_ea1/config uration/guide/ swstp.1_9_ea1/config uration/ guide/swstp. 46 / 121 .Refer to the exhibit. The safer . The bridge priority is 128. The lower the number. Why would the switch be considered as a root bridge? A.com/en/US/docs/switches/lan/catalyst2950/software/release/12.19 and all ports are forwarding. the range is 0 to 61440 in increments of 4096. the default is 32768.cisco. Reference: http://www. D.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".  cost represents higher-speed transmission and is preferred.html#wp1105354 90. Answer: D Explanation: For priority. B.

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

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

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

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

Which command creates a login authentication method named "login" that will primarily use RADIUS and fail over to the local user database? A. It provides a way of collecting security information that you can use for billing. Enable DHCP snooping globally. Reference: http://www.com/en/US/docs/switches/lan/catalyst6500/ios/12. RADIUS or TACACS+ security servers perform authorization for specific privileges by defining attribute-value (AV) pairs. 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. you could get a log of when users logged in and when they logged out.techrepublic. The safer . Reference: http://www. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. auditing. Accounting: The last "A" is for accounting. For example. It also lists radius first then local. Depending on your security options. Which solution ensures that the server maintains network reachability in the future? A.  5. you can define AAA authorization with a named list or authorization method.Which portion of AAA looks at what a user has access to? A. B. C. (config)# aaa authentication login default radius local B. (config)# aaa authentication login default local radius D. accounting D. it can also support encryption. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable. (config)# aaa authentication login radius local Answer: B Explanation: In the command "aaa authentication login login radius local" the second login is the name of the AAA method. which would be specific to the individual user rights. 51 / 121 . Trust the interface that is connected to the server with the ip dhcp snooping trust command. The feature is not active until you complete this step. with accounting. authorization looks at what that authenticated user has access to do. In the Cisco IOS. and reporting. easier way to help you pass any IT exams.cisco.2SX/configuration/guide/sno odhcp. (config)# aaa authentication login login radius local C.com/blog/data-center/what-is-aaa-and-how-do-you- configure-it-in-thecisco-ios/ 101. For more protection against malicious attacks. authorization B. Authorization: After initial authentication. Configure a static DHCP snooping binding entry on the switch. authentication C. 102. You can use accounting to see what users do once they are authenticated and authorized.A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping. Disable DHCP snooping information option.html#wp1090479 100.

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. To ensure network reachability to the server. Packets from the workstation will be rate limited according to the default values set on the switch. Reference: http://www. logs.address command. B. C. Ensure all switches are configured as VTP server mode.com/articles/ article. D. The safer . 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. Which configuration must be made before the private VLAN is configured? A.DHCP snooping and IP Source Guard have been configured on a switch that connects to several client workstations. B.html 103.2_55_se/configuration/guide/scg3750/ swdynarp. Private VLANs are configured in the context of a single switch and cannot have members on other switches. the DHCP snooping binding database. The IP address of one of the workstations does not match any entries found in the DHCP binding database. C. D.ciscopress.com/c/ en/us/td/docs/switches/lan/catalyst3750/software/release/12. This capability protects the network from certain man-in-the-middle attacks. easier way to help you pass any IT exams. and discards ARP packets with invalid IP-to-MAC address bindings.asp?p=29803&seqNum=6 104. Reference: http://www. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Answer: C Explanation: You must configure VTP to transparent mode before you can create a private VLAN. The interface that is connected to the workstation in question will be put into the errdisabled state. Answer: B Explanation: Dynamic ARP inspection is a security feature that validates ARP packets in a network. Which statement describes the outcome of this scenario? A. configure a static DHCP snooping binding entry on the switch. On untrusted interfaces.  D. If the ARP packet is received on a trusted interface. Answer: D Explanation: The IP source binding table has bindings that are learned by DHCP snooping or are manually configured 52 / 121 . The packets originating from the workstation are assumed to be spoofed and will be discarded.cisco. Private VLANs also carry TLVs that are not known to all types of Cisco switches. Disable VTP and manually assign VLANs. It intercepts. Traffic will pass accordingly after the new IP address is populated into the binding database. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify mac. Configure VTP Transparent Mode. the switch forwards the packet only if it is valid.A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed. Enable VTP version 3. the switch forwards the packet without any checks.

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

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

switch# show ip verify source D. switch(config)# errdisable recovery interval 180 B. 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 ------------------.-------------------0010. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state.1540 Dynamic 2 FastEthernet0/5 0010.cisco. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces.0de0. switch# show mac address-table B.  Which command accomplishes this task? A. Reference: http://www.7b00.1545 Dynamic 2 FastEthernet0/5 110.-----------. switch# show port-security C. This is the default mode. switch(config)# switchport port-security aging type inactivity E. The safer . SDM routing C.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. If a port is in per-VLAN errdisable mode.While troubleshooting a network outage. 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.pdf 109. switch(config)# switchport port-security protect D. Which two commands help trace this PC when the MAC address is known? (Choose two. easier way to help you pass any IT exams. including the switch port that the particular host is using. Which option decreases consumption of bandwidth used by broadcast traffic? A.e289 Dynamic 1 FastEthernet0/1 0010. Cisco IOS parser D.---.7b00.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec. storm control B. switch# show mac address-table address <mac address> Answer: AE Explanation: These two commands will show the MAC address table. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port. You can also customize the time to recover from the specified error disable cause (default is 300 seconds) by entering the errdisable recovery interval interval command. switch(config)# errdisable recovery cause psecure-violation C. integrated routing and bridging 55 / 121 . switch# show ip arp inspection E.) A.

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

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

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

the switch forwards the packet only if it is valid. ip dhcp snooping trust B.  Reference: http://www. 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.pdf 117.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. easier way to help you pass any IT exams. If a Layer 2 LAN port is connected to a DHCP server. ip dhcp snooping C. including the community and isolated 59 / 121 . Reference: http://www. the switch forwards the packet without any checks. VTP pruning D. community port D. ip dhcp trust D. and enable DHCP globally on the switch.Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A.Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. On untrusted interfaces. storm control C. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch.2SX/configuration/ guide/book/snoodhcp. the DHCP snooping binding database. follow these guidelines: DHCP snooping is not active until you enable the feature on at least one VLAN. The promiscuous port can communicate with all interfaces. If the ARP packet is received on a trusted interface.2SX/configuration/guide/book/snoodhcp. The safer .com/c/en/us/td/docs/ switches/lan/catalyst6500/ios/12. Before globally enabling DHCP snooping on the switch. isolated port C. trunk port Answer: A Explanation: The types of private VLAN ports are as follows: Promiscuous--A promiscuous port belongs to the primary VLAN. ip dhcp snooping information Answer: A Explanation: When configuring DHCP snooping. make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled. promiscuous port B. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. Reference: http:// www.html 119.cisco. Dynamic ARP Inspection B. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command.html 118. If a Layer 2 LAN port is connected to a DHCP client. including the community and isolated host ports? A.Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces.cisco.switches/72846-layer2-secftrs-catl3fixed.com/c/en/us/ support/docs/switches/catalyst-3750-series.

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

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

Which command would a network engineer apply to error-disable a switchport when a packet.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. VTP pruning D. Reference: http://www. router(config-if)#storm-control action error D.html 125. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure. so when you enable both on an interface. Answer: A Explanation: 802.1X on the same interfaces.cisco. port security C. 802.1X and Port Security You can configure port security and 802. router(config-if)#storm-control action trap C.storm is detected? A.1x to secure the MAC address that port security authenticates.1X is already preventing inbound 62 / 121 . It allows port security to secure the IP address that 802.1x authenticates. It allows port security to secure the MAC address that 802.1x on the same interface.  broadcast traffic? A.1X authenticates. It allows 802. 802.A network engineer configures port security and 802. Reference: http://3c3cc. D. · Use the error disable detection and recov-ery feature. 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. router(config-if)#storm-control action shutdown B. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN. The safer .1X processes packets before port security processes them. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. It allows 802. C. Port security secures the MAC addresses that 802.2SX/configuration/ guide/book/storm. 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. easier way to help you pass any IT exams. B. Which option describes what this configuration allows? A. which creates excessive traffic and degrades network performance.com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s. · Enter the no storm-control action shut-down command to revert to the default action (drop). storm control B.pdf 124. multicast.1x authenticates.1x to secure the IP address that port security authenticates.

Although sticky secure addresses can be manually configured. and added to the running configuration. On an access port. VLAN maximums are not useful for access ports. stored in the address table. which port type connects the switch to the gateway router? A.pdf 127. you can configure MAC addresses to be sticky. dynamic access point Answer: A Explanation: Port Security and Port Types You can configure port security only on Layer 2 interfaces. 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. Ethernet Port Channels--Port security is not supported on Ethernet port channels.  traffic on the interface from unknown MAC addresses.Which feature describes MAC addresses that are dynamically learned or manually configured. Reference: http://www. If these addresses are saved in the configuration file. and added to the running configuration? A. Reference: http://www.com/c/en/us/td/docs/switches/datacenter/sw/4_1/ nx- os/security/configuration/guide/sec_nxos-cfg/sec_portsec.On which interface can port security be configured? A.When you configure private VLANs on a switch. promiscuous B. The safer .cisco. isolated 63 / 121 .cisco. stored in the address table. easier way to help you pass any IT exams.html 126.com/c/en/us/td/docs/switches/lan/catalyst4500/12. Reference: http:// www. static D.com/c/en/us/ td/docs/switches/datacenter/sw/4_1/nx- os/security/configuration/guide/sec_nx-os-cfg/sec_portsec. Trunk ports--You can configure port security on interfaces that you have configured as Layer 2 trunk ports. static trunk ports B. SPAN ports--You can configure port security on SPAN source ports but not on SPAN destination ports.cisco. community C. EtherChannel port group D.html 128. These can be dynamically learned or manually configured.2/25ew/ configuration/guide/conf/port_sec. dynamic C. the interface does not need to dynamically relearn them when the switch restarts. destination port for SPAN C. port security applies only to the access VLAN. it is not recommended. The device allows VLAN maximums only for VLANs associated with the trunk port. secure Answer: A Explanation: With port security. sticky B.

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

the default is 0 (no de. VSS eliminates the need for FHRP at the aggregation layer of the data center.  10. its state changes do not affect the hot standby priority of the configured device. provides two independent supervisors with two different control planes D. Reference: http://www. it assumes control as the active router.html 131.com/en/US/docs/switches/lan/catalyst3550/software/release/12. The VSS system creates a single logical router at Layer 3.1_19_ea1/confi guration/ guide/swhsrp.Which First Hop Redundancy Protocol is an IEEE Standard? A. 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. The ber] priority priority range is 1 to 255. This VSS routing instance fulfills this first-hop role without the need for a dedicated protocol.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate.com/en/US/docs/switches/lan/catalyst3550/software/ release/12. (Optional) preempt--Select so that when the local router has a higher priority than the active router.cisco. GLBP B. (Optional) group-number--The group number to which the command applies. Use the no form of the command to restore the default values.html 133. HSRP C.cisco.html#wp1044327 132. easier way to help you pass any IT exams.cisco. Reference: http://www. 1024 Answer: B Explanation: standby [group-num. 100 C. the default priority is 100. reduces cost B. (Optional) delay--Set to cause the local router to post.Which option is a benefit of using VSS? A. The highest [preempt [delay delay]] number represents the highest priority. For each interface configured for hot standby. simplifies configuration C. 120 D. The VSS IP route is highly available due to MEC and the resiliency of the VSS system. If an interface is not tracked. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes. you can configure a separate list of interfaces to be tracked. Reference: http://www.Set a priority value used in choosing the active router. VRRP 65 / 121 . The safer . 50 B.lay before taking over).What is the default HSRP priority? A. The range is 0 to 36000 (1 hour).1_19_ea1/confi guration/guide/swhsrp.pone taking over the active role for the shown number of seconds.

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.0. -Can use real router -Use virtual ip ad. When a tracked 66 / 121 .0.(generally through ing. if not. 1 B. 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).optimal loadbalanc-algorithm ing.0.. -Round-Robin algorithm (de-fault). int. traffic.1 or Virtual For-or more backup more listening warder) passing routers.  D.Host-de-group per in.0. ority become master. the . routers. 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 224.0. one with highest pri. Reference: http://cciethebeginning..2 udp 1985 224.0.102 udp (version1) 3222 224.0.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. 5 C. 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.Multiple VRRP rithm..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 .wordpress.Use virtual ip dress.18 IP 112 224.. 10 D..up to Router role 1024 virtual routers (GLBP groups) per physical inter-face.0.address.(generally through through ARP DHCP) DHCP) requesting a unique virtual gateway. easier way to help you pass any IT exams.1 group (Active -1 master router. int..com/2008/08/23/router-highavailability-protocol- comparison-2/ 134. The safer .1 standby router.ip address.group per in-pendent algo-terface/SVI/routed terface/SVI/routed rithm.up to 4 AVF routers on the 1 active router.

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

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

Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration. a network analyzer is connected to Port f0/1 of a LAN switch. When troubleshooting a network problem. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues.0 15. In order to resolve this issue. The safer .255.102 and User Datagram Protocol (UDP) port 3222 (source and destination). permit the Multicast address by permit 224.cisco.255.0.  Which option describes the reason for this message in a GLBP configuration? A. If the MAC address of the interface is the same as the one reported in the error message.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four.255. LACP port priority 69 / 121 . Which command can prevent BPDU transmission on this port? A. Verify the spanning-tree topology and check if there is any layer2 loop.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520. Unavailable GLBP active forwarder B.0.) A. Incorrect GLBP IP address C. spanning-tree portfast bpdufilter default D. no spanning-tree link-type shared Answer: C 142. then it indicates that this router is receiving its own hello packets sent. issue the show interface command to verify the MAC address of the interface.Refer to the exhibit. LACP system priority B. then some other device with a MAC address reports this error message. spanning-tree bpduguard default C. easier way to help you pass any IT exams.shtml#dr 141.0. When configuring the multicast boundary command. spanning-tree portfast bpduguard enable B. If the interface MAC address is different from the one reported in the error message.0. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224. HSRP configured on same interface as GLBP D. Reference: http://www.

The local switch is overloaded with the amount of sourced traffic that must be replicated to the remote switch. Answer: B 145. however. UDLD is enabled globally. interface bandwidth Answer: ABDE 143. The local RSPAN switch is replicating only Rx traffic to the remote switch. C. C. The RSPAN designated VLAN is missing the remote span command. Which spanning-tree feature accomplishes this? A. port number F. BPDUfilter C. easier way to help you pass any IT exams.  C. The port then transitions into the errdisable state. D. RPVST+ E. B. interface MAC address D. a network engineer decides to create a separate spanning tree for every group of 10 VLANs. UDLD timers are inconsistent.A network engineer is installing a switch for temporary workers to connect to. hot-standby link identification number G. Which option describes what causes the port to go into the errdisable state? A. UDLD port is configured in aggressive mode. RSTP D. a Network Administrator noticed that one port stops receiving UDLD packets. system ID E. MST B. BPDUblock B.To follow the Layer 2 switching guidelines. PVST+ C. however. This port continues to reestablish until after eight failed retries. traffic is not being replicated to the remote switch. Normal UDLD operations that prevent traffic loops. The engineer does not want this switch participating in Spanning Tree with the rest of the network. The local and remote RSPAN switches are configured using different session IDs. B.RSPAN has been configured on a Cisco Catalyst switch. end user connectivity is still required. STP Answer: A 146. BPDUignore 70 / 121 . D. Answer: A 144. Which type of misconfiguration is a cause? A. The safer . Which version of spanning tree is appropriate to meet the company policy? A.After UDLD is implemented.

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

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

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

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

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

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

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

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

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

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

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

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

  B. all untagged traffic is tagged with VLAN 113 C. easier way to help you pass any IT exams.where are the templates stored? A. spanning-tree mst 1 root primary C. Interface Gi5/1 is using an industry standard trunking protocol E. all stack members B. Spanning-tree cost C. spanning-tree mst 1 priority 1 F. spanning-tree mst vlan 10. D. flash memory 83 / 121 . The device is configured with the default MST region. all untagged traffic is tagged with VLAN 600 Answer: DF 187.20 root primary Answer: BD 188. Interface description D.In a switch stack is configured to use SDM template.20 priority root D.Refer to the exhibit. On interface Gi6/2. On interface Gi5/1. stack master C. Trunk mode E. Interface Gi6/2 is the root port for VLAN 36 F. Spanning-tree priority B. Which two commands ensure that DSW1 becomes root bridge for VLAN 10 and 20? A. spanning-tree mst 1 priority 4096 E.which two attributes must match across the member ports?(choose two) A. spanning-tree mstp vlan 10. spanning-tree mstp 1 priority 0 B. The safer . allow VLANs Answer: DE 189.When a Layer 2 trunking EtherChannel is configured.

(config) spanning-tree guard root B. When 61 percent of the Address table capacity is used D. log B. 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. (config-if) spanning-tree guard root Answer: B 193. udld can aggressively disabled the port after eight failed retries Answer: D 194. The safer . TFTP server Answer: B 190. The port is put in the errdisabled state and can only be reenabled manually D. The port is removed from the EtherChannel Answer: B 84 / 121 .What is the default port security violation A. shutdown C. When the phone previously on Fa0/2 is now connect to Fa0/5 Answer: CE 191. When the switch loses power and reboots E.  D. When 61 MAC address are in the switch C. udld is working with non cisco devices C.What happens while the same port is configured as a SPAN destination? A. what he need to consider? A.Refer to exhibit. udld is a non-propriety B. The port forwards traffic in the EtherChannel group and acts as a SPAN source simultaneously B. no change D.What is the command for configuring root guard? A.A physical switch port is part of an EtherChannel group. which two statements correctly indicate when an SNMP trap is set to the switch? (Choose two) A. udld is layer 1 D. When a new workstation connects to port F0/1 B.Network engineer want to use UDLD.

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

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

112 is preferred over the router with IP address 172. Any change in the state of the port generates a TC BDPU B. The safer .16. bypasses Answer: ACE 204. The final active router is the router with IP address 172.16.11. The router with IP address 172. B.112 has nonpreempt configured 87 / 121 . Enable VTP pruning on any client switch in the domain. The priority of the router with IP address 172. The switchport command is missing from the configuration Answer: A 203. C.11. Only edge ports moving to the blocking state generate a TC BPDU E. Based on the debug output.11.16. Answer: D 206.Which statement is true about RSTP topology changes? A. The router with IP address 172. which three statements about HSRP are true? (Choose Three) A. If either an edge port or a nonedge port move to a block state.111 D. deletes C. Any loss of connectivity generates a TC BDPU Answer: B 205.  C. The other side of the interface is set as access D. accepts E. then a TC BDPU is generated D. discads F.16.16.What action should a network admin take to enable VTP pruning on an entire management domain? A.11.11. The IP address 172. Enable VTP pruning on a VTP server in the management domain.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A.11. Enable VTP pruning on every switch in the domain. logs B.115 is the virtual HSRP IP address E.111 B. intercepts D. Only nonedge ports moving to the forwarding state generate a TC BDPU C.111 has preempt configured C. easier way to help you pass any IT exams.16. Enable VTP pruning on any switch in the management domain D.Refer to the exhibit.

If BPDUs are received by a port configured for PortFast.11.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. then PortFast is disabled and the BPDUs are processed normally. If BPDUs are received by a port configured for PortFast. based on the output what is the problem A. Otherwise. STP D. C. the etherchannel interface of switch 1 is not configured C. the etherchannel protocol on switch 1 is not correct D. PAgP Answer: A 211. B. the port transitions to the forwarding state. The safer .Refer to the exhibit.16. An engineer is configuring an etherchannel between two switches. Vlans should be local to a Switch E. Routing should occur at the access layer if voice VLANs is utilized. port security C. the etherchannel on the switch 1 using incorrect member port B. Routing may be performed at all layers but is most commonly done at the core and distribution layers C. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209. easier way to help you pass any IT exams.112 is using default HSRP priority. routing should occur at the distributionlayer. Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208. the etherchannel interface of switch 2 is not configured Answer: C 210. LACP B. they are ignored and none are sent. Answer: ABD 207. B. If BPDUs are received by a port configured for PortFast. Routing should not be performed between VLANs located on separate switches D.  F.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. D. which technology is used to prevent this type of misconfiguration from affecting the network? A.When using EtherChannel misconfiguration guard. he notices the error message on Switch 2 (error message channel-missconfiguring error). 88 / 121 .

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

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

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

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

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

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

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

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

Question is if you do "switchport trunk allowed vlan 2.Which option TPI 802.There was another Exhibit about port priority. DSW1: interface g1/0 C. There are 2 SW and 2 PCs. trunk mode E. shutdown Answer: A 245. PC1 is connected to DSW1 and DSW2 (Root Bridge). errdisabled B. spanning tree cost C. DSW1: spanning-tree port priority 16 B.1Q tag? A. Default port prioirty is configured.A question with an exhibit.Core switch connected to 2 dis switches which connected 2 ASW. 0x0806 97 / 121 . Port Security Answer: C 241.If EtherChannel guard is configured. what happens. There is etherchannel trunk between DSW1 and DSW2.  C. Change in port priority so traffic goes through DSW1 to DSW2 A. Link connected from PC1 to DSW2 is 4Gbps and DSW1 is 10Gbps. STP D. how the interface status is (or looks like) if misconfigured? A. interface description D.3. DSW2: interface g1/0 E. because you will remove VLANs 1 and 5 from trunk with this command. (config-if)#spanning-tree etherchannel guard misconfig Answer: A 243. Ports towards PCs are in mode access VLAN 5 A. spanning tree port priority B. There is a trunk with VLAN 1 and 5 allowed. You should use "switchport trunk allowed vlan" to add additional VLANs into trunk Answer: A 246. The safer . The connection is lost between PCs.What should match during EtherChannel configuration? A. (config)#spanning-tree etherchannel guard misconfig B.4" on SW2. easier way to help you pass any IT exams. DSW2: spanning-tree port priority 16 D. allowed VLANs on the trunk Answer: DE 242. DSW1: spanning-tree port priority 0 Answer: AB 244.question on Spanning-tree EtherChannel misconfiguration A.

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

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

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

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

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

ac03. with the MAC address 0000. what does the “03” represent? A.  diagram current root for VLAN 10 is DSW2. enable RSTP and uses bpdu type 4 C. enable RSTP and uses bpdu type 2 Answer: D 277. E.) A. What two commands can you apply on the interfaces? (Choose two. The safer . diameter C. DSW1: change bridge priority but command is priority root. DSW1: change port priority but in global configuration mode. switch(config-vlan)# private-vlan private C.What keyword in macro command is used to configure a root bridge and automatically adjust STP timers? A. The GLBP group number B. easier way to help you pass any IT exams. NA Answer: AD 278.Your manager asked you to make every port on your switch bypass the normal spanning-tree timers which includes your uplink to other switches. DSW2: change bridge priority to 61440 (highest). switch(config-vlan)# private-vlan transparent Answer: C 279. switch(config-vlan)# private-vlan common B. disable RSTP and uses bpdu type 4 B. NA D. spanning-tree portfast access D. Answer: BE 275.0c07. disable RSTP and uses bpdu type 2 D. (Choose two. D. DSW1: change bridge priority to 4096 (lowest). DSW1: change bridge priority but value is 0.Which IOS configuration command is required to configure a VLAN as a private VLAN? A.Regarding high availability. switch(config-vlan)# private-vlan primary D. spanning-tree portfast trunk E.Question about what does MST do? (Question looks incomplete) A. B. na Answer: B 276. root primary B. The type of encapsulation 103 / 121 . spanning-tree portfast B.) A. spanning-tree portfast default C. Question is how to make DSW1 the primary root for VLAN 10. C.

  C.10.10.10.10 C. The no standby priority command assigns a priority of 100 to the router D. Which of the following describe reasons for deploying HSRP? (Choose three) A.Refer to the exhibit.255.10.10.255. Assuming that preempting has also been configured. the router with the lowest priority in an HSRP group would become the active router E.2 255.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. C. the standby group-number priority priority-value global configuration command must be used.10 Switch_B(config-if)#standby 1 track interface fa 1/1 B.255. The HSRP router number D.10. HSRP allows one router to automatically assume the function of the second router if the second router fails C. HSRP provides redundancy and fault tolerance B.10.2 255. HSRP provides redundancy and load balancing Answer: ABD 281. The safer . To assign the HSRP router priority in a standby group.HSRP has been configured between two Company devices.10. B. 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 default priority of a router is zero (0).10.255. Switch_B(config-if)#ip address 10. The VRRP group number E.255.255. Switch_B(config-if)#ip address 10.10 D. The HSRP group number F.255.255.2 255.2 255. When two routers in an HSRP standby group are configured with identical priorities. The active router number Answer: E 280.10.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 .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. easier way to help you pass any IT exams.10. Switch_B(config-if)#ip address 10.10.Which two statements about the HSRP priority are true? A.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10. Switch_B(config-if)#ip address 10.10.10. HSRP allows one router to automatically assume the function of the second router if the second router starts D.

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

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

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

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

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

after applying the question command: switchport trunk allowed vlan 1. Source-dest MAC C. The safer .1q trunking 1 Port Vlans allowed on trunk Fa0/1 1. spanning-tree mstp vlan 10.) A. spanning-tree mst 1 priority 1 F. 99. Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two. Source MAC B. B. Destination IP D. All non-root ports of the Access Switches. spanning-tree mst 1 root primary C. Downstream links from Distribution to Access Switches C. spanning-tree mst vlan 10.switchport trunk allowed vlan 1. NA Answer: AB Explanation: A & B are right 1.EXHIBIT . Answer: AB 310. Access Switches to uplink ports to Distribution Switches D. switchport trunk allowed vlan remove vlan 100 B.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 . 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. 80.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two. 20 root primary Answer: BD 311. On Layer 3 Switches. 20 priority root D.  A.) A. spanning-tree mst 1 priority 4096 E. spanning-tree mstp 1 priority 0 B. switchport trunk allowed vlan except vlan 100 D. easier way to help you pass any IT exams.) A.101-250 C. Destination MAC Answer: A 309.80.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. switchport trunk allowed vlan 1-80.Refer to the exhibit.80.

HSRP uses multicast address 224.A question about port number and multicast address of HSRP. C. help in preventing loops C. The spanning-tree mode is IEEE. Protocol used was IEEE. (CONCEPT ONLY) A.) A.When no spanning-tree bpdu guard enable is configured in f0/7.  Switch(config-if)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. determines switch path Answer: B 313. We have to configure shutdown and no shutdown. NA Answer: AB 315. (CONCEPT ONLY) A.0.101-1005 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 D.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-99. provides backup for fiber B. removes loops D. B. The command spanning-tree mode IEEE was implemented. easier way to help you pass any IT exams.) A. na Answer: A 316. (Choose two.A question about the priority of a Stackwise switch. An exhibit with spanning-tree. which is against what is required in the question 312.0. B. Have to use errdisable recovery C. The safer . allowed all vlans except 100. NA Answer: A 314. which is true? (There’s an exhibit that shows f0/7 receive BPDU. NA D. NA D. na 111 / 121 . na C.EXHIBIT INCLUDED.What is the benefit of UDLD? A. Master member is selected based on member's priority B.2 and uses UDP port 1985 B.

0. easier way to help you pass any IT exams. B.hh010. na Answer: A 318. 1 . na C.Behavior of an access port when a tagged packet is received other than the access VLAN value.A question about the number of Active Virtual Gateways (AVG) that can be used.A question about the port number and multicast address of VRRP.0. na C.0. B. na Answer: A 319. http://bbs. B. Tag is removed and packet is forwarded of the VLAN mentioned in the tag. VRRP uses multicast address 224. na D. na D. (CONCEPT ONLY) A. GLBP uses multicast address 224. The safer . B.com D. na D.0. (CONCEPT ONLY) A. na Answer: A 317.  C. na Answer: A 320. (CONCEPT ONLY) A. A.102 with UDP port 3222. na D. na C.only one can be elected on a switch.Refer to the exhibit 112 / 121 .18 and uses UDP port 112. tag is removed and packet is forwarded on the VLAN of the access port C. packet is dropped Answer: D 321.A question about the port number and multicast address of GLBP.

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

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

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

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

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

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

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

. show status (or show interface [interface] status) Answer: AB 118 / 121 . The safer . B. disabled Answer: A 347.1Q).question about the characteristics of dot1Q (or 802. Answer: A 349. Shutdown. B.  Answer: 346. It adds an extra of 32 bits to the frame.. It inserts a tag between the source address and length field. Answer: AB 348. show log B. (Choose two.) A. easier way to help you pass any IT exams.How to check the cause for an error disable in a interface after being connected? (Choose two.Storm control default violation..) A..What happens when a destination SPAN port that is configured as EtherChannel receives traffic? A.. Nothing.. A.

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

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

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