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

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

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

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

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

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

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

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

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

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

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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

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

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

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

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

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

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

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

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

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

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

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

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

100 seconds C. the timeout feature is disabled. Each device broadcasts periodic advertisements to all of its neighbors. the ports are still disabled if you have not configured errdisable recovery on the switch. Each device sends periodic advertisements to a central device that builds the network topology. In this case.com/en/US/tech/tk389/tk621/ technologies_tech_note09186a00806cd87b. easier way to help you pass any IT exams. you must reenable the ports manually. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC. LLDP-MED is an extension to LLDP that operates between routers that run BGP. 30 seconds B.What is the default value for the errdisable recovery interval in a Cisco switch? A.cisco. C.2_58_se/configur ation/ guide/swlldp. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery.Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true? A. Reference: http://www. The safer . by default. and inventory management. The show errdisable recovery command shows the default error-disable recovery state for all the possible conditions.pdf 56. LLDP-MED is an extension to LLDP that operates only between network devices.com/en/US/docs/switches/metro/me3400/software/release/12.cisco. C.shtml 55. Issue the shutdown command and then the no shutdown interface mode command on the associated interface in order to manually reenable the ports. D. B. Reference: http://www. 28 / 121 . 600 seconds Answer: C Explanation: After you fix the root problem.  Inline power Reference: http://www. The errdisable recovery command allows you to choose the type of errors that automatically reenable the ports after a specified amount of time.shtml 54. 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.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b. 300 seconds D. Power over Ethernet. LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices.cisco. network policy. 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.Which statement about LLDP-MED is true? A. LLDP-MED is an extension to LLDP that operates only between endpoint devices. 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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com/en/US/docs/switches/lan/catalyst6500/ios/12.  http://www. The hexadecimal values of 0x000 and 0xFFF are reserved. If more than one VLAN is needed. 8-bit B. The safer . the port should be configured as a trunk port. 0 B.wikipedia.cisco. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs.1Q 65.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A.What is the size of the VLAN field inside an 802. 16-bit D. All other values may be used as VLAN identifiers. 1 C. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 . 2 D. 66.org/wiki/IEEE_802.2SX/configuration/guide/vtp.1q frame? A. allowing up to 4. easier way to help you pass any IT exams.094 VLANs Reference: http://en. html 64.Refer to the exhibit. 12-bit C. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.

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

1Q 69. port-security C. within the Ethernet payload C.cisco. ignoring the switchport access VLAN 10 command. When you disable voice VLAN. spanning tree D. The safer .In which portion of the frame is the 802. but not automatically disabled when a voice VLAN is removed? A. portfast B. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. within the Ethernet source MAC address Answer: A Explanation: Insertion of 802. the port will actually be used as a trunk. the Port Fast feature is not automatically disabled. Exhibit D Answer: A Explanation: In this case. for Ethernet frames.wikipedia. Obviously.Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a 34 / 121 .1_22_ea11x/co nfiguration/guide/swvoip. 67. it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en. within the Ethernet FCS D. so even though Cisco IOS will accept both.1q header found? A. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display).html 68.1Q does not encapsulate the original frame.1Q tag in an Ethernet frame 802.org/wiki/IEEE_802. within the Ethernet header B.  C. Instead. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports.Which feature is automatically enabled when a voice VLAN is configured. Exhibit C D. The Port Fast feature is automatically enabled when voice VLAN is configured. the port has been configured both as a trunk and as a switchport in data vlan 10. Reference: http://www.com/en/US/docs/switches/lan/catalyst2950/software/ release/12. a port can not be both. easier way to help you pass any IT exams.

Enable VTP pruning and disable 802. all the clients in the VTP domain will automatically enable VTP pruning. but VLAN 1 can't be pruned because it's an administrative VLAN. Change VTP mode to server and enable 802.orbit-computer-solutions. D. port-security C.1q. easier way to help you pass any IT exams. there are occasions when VTP can create unnecessary traffic. However. storm control D.1q. By default. VLANs 2 1001 are pruning eligible. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic. Reference: http://www. you will need to enable 802.php 70. Which action resolves this problem? A. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN.com/VTP-Pruning. even in situations in which few users are connected in that VLAN.com/c/en/us/ support/docs/lan-switching/vtp/1055821. The network engineer found that the engineering VLAN is missing from the database. All switches in the network receive all broadcasts.1Q 35 / 121 . Disable VTP pruning and disable 802. C. Update the VTP revision number. The safer .Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A. VLANs 1-1001 B.  switch? A.Refer to the exhibit. Both VTP versions 1 and 2 supports pruning. Reference: http://www. Answer: C Explanation: Only VTP servers can add new VLANs to the switched network.html#vtp_pruning 71. VTP pruning B. B. Then.cisco.1q. VLANs 2-1001 D. VLANs 1-4094 C. VLANs 2-4094 Answer: C Explanation: VTP pruning should only be enabled on VTP servers. The users in an engineering department that connect to the same access switch cannot access the network. bpdguard Answer: A Explanation: VTP ensures that all switches in the VTP domain are aware of all 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. 73. The network switches for two companies have been connected and manually configured for the required VLANs. Enable the company B switch with the vtp mode server command. C. 72. Manually force trunking with switchport mode trunk on both switches. Which action resolves this problem? A. B.A network engineer must implement Ethernet links that are capable of transporting frames and IP 36 / 121 .Refer to the exhibit. 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.  trunking to pass this new VLAN along to the other switches. Delete vlan. easier way to help you pass any IT exams. The VTP domain names do match and they are both VTP servers so there are no issues there. 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.dat and ensure that the switch with lowest MAC address is the VTP server. D.

There are 2 different methods for trunking. B. If you use 802. Which Cisco IOS switching feature can be used to achieve the task? A. VLAN spanning-tree in SW-2 is configured. Cisco Discovery Protocol version 2 carries native VLAN information.Which statement about using native VLANs to carry untagged frames is true? A. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information. PPP encapsulation with a virtual template B. 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. The safer . Which option is the cause of the spanning-tree error? A. both with native VLAN mismatch. Answer: A Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches. 74.1Q and ISL. Answer: C Explanation: Explanation/Reference: Here we see that the native VLAN has been configured as 2013 on one switch.1q trunks are on both sides. only 802. 802. you will see CDP error messages on the console output. but version 2 does not. A multilayer switch has been configured to send and receive encapsulated and tagged frames. C.  traffic for different broadcast domains that are mutually isolated. Reference: http://www.Refer to the exhibit. but 1 (the default native VLAN) on the other switch. but version 1 does not. Consider that this is a multivendor environment. B. C. Cisco Discovery Protocol version 1 carries native VLAN information.com/articles/article. D. VLAN 2013 on the multilayer switch is configured as the native VLAN. Cisco Discovery Protocol version 3 carries native VLAN information.ciscopress. 802. dot1q VLAN trunking D. Link Aggregation Protocol at the access layer C.asp?p=29803&seqNum=3 75. D. but versions 1 and 2 do not. spanning-tree bpdu-filter is enabled. If you have a native VLAN mismatch. Failure to do this causes Cisco switches to 37 / 121 . you must ensure that you choose a common native VLAN for each port in the trunk.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. easier way to help you pass any IT exams. Of these. VLAN ID 1 should not be used for management traffic because its unsafe.1Q trunks.

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

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

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

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

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

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

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

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

B. it has the lowest priority value for VLAN 1. The lower the number.  cost represents higher-speed transmission and is preferred. Reference: http://www. Reference: http://www.com/ en/US/docs/switches/lan/catalyst2950/software/release/12.Refer to the exhibit. D. easier way to help you pass any IT exams.com/en/US/docs/switches/lan/catalyst2950/software/release/12. The safer . C.1_9_ea1/config uration/ guide/swstp.19 and all ports are forwarding. Why would the switch be considered as a root bridge? A.Refer to the exhibit.html#wp1105354 90. the default is 32768.cisco. The switch priority for VLAN 1 and the macro specifies "This Bridge is the root". the more likely the switch will be chosen as the root switch.html#wp1020666 91. 46 / 121 .cisco. The bridge priority is 128. Answer: D Explanation: For priority. The bridge priority is 1 and all ports are forwarding.1_9_ea1/config uration/guide/ swstp. The switch priority value is zero. the range is 0 to 61440 in increments of 4096.

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

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

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

cisco. C. Define and configure the DHCP server. Enable DHCP snooping on at least one VLAN. If for some rare reason all VSL connections are lost between the virtual switch members leaving both the virtual switch members up. What is the solution to avoid the snooping database from being rebuilt after every device reboot? A. Apply ip dhcp snooping trust on all interfaces with dynamic addresses.  supervisor ports to provide a high level of redundancy. The new active virtual switch continues to forward traffic on all links. The VSS detects which system was last in active state and shuts down the other switch. D. C. Answer: B Explanation: In the dual active recovery mode.A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database. Reference: http://www. 3. Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting. The safer .html 98. easier way to help you pass any IT exams. the VSS will transition to the dual active recovery mode. The dual active state is detected rapidly (subsecond) by any of the following three methods: Enhancement to PAgP used in MEC with connecting Cisco switches L3 Bidirectional Forwarding Detection (BFD) configuration on a directly connected link (besides VSL) between virtual switch members or through an L2 link through an access layer switch L2 Fast-Hello Dual-Active Detection configuration on a directly connected link (besides VSL) between virtual switch members (supported with 12. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. Configure the DHCP snooping database agent.html 99. The new active virtual switch continues to forward traffic on all links. B. D. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. E. the trust state of all interfaces is untrusted.cisco. All interfaces are shut down in the formerly active virtual switch member. By default. Answer: A Explanation: Minimum DHCP Snooping Configuration The minimum configuration steps for the DHCP snooping feature are as follows: 1. Reference: http://www. DHCP snooping is inactive on all VLANs. The switch shuts down and waits for the VSL link to be restored before sending traffic.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. B.com/en/US/prod/collateral/switches/ps5718/ps9336/ prod_qas0900aecd806ed74 b. Ensure that DHCP server is connected through a trusted interface. By default.Which statement describes what happens when a switch enters dual active recovery mode? A. This step ensures that database entries are restored after a restart or switchover. 4.2(33)SXI) In the dual active recovery mode. but the new active virtual switch forwards traffic on all links. A DHCP snooping database agent should be configured. Disable Option 82 for DHCP data insertion. Enable DHCP snooping for all VLANs that are associated with the switch. The switch continues to forward traffic out all links and enables spanning tree on VSL link and all other links to prevent loops. 50 / 121 . 2.

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

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

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

F. E. Only broadcast traffic is limited by this particular storm control configuration. specify the rising threshold level for broadcast. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. The safer . You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. After IP source guard is enabled on an interface. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold. C. They decide to configure the network to automate the process of re-enabling user ports.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12- 2_25_see/configuration/guide/3550SCG/ swdhcp82.After port security is deployed throughout an enterprise campus. or unicast traffic as a percentage (up to two decimal places) of the bandwidth. its associated MAC address.com/c/en/us/td/docs/switches/lan/catalyst3550/ software/release/12. 54 / 121 . The switch drops broadcasts when they reach 75% of bandwidth.00. The switch uses the IP source binding table only when IP source guard is enabled. multicast. storm control is disabled. Reference: http://www. the switch blocks all IP traffic received on the interface. The port forwards traffic when traffic drops below this level.cisco. the network team has been overwhelmed with port reset requests. Answer: CDF Explanation: storm-control {broad. except for DHCP packets allowed by DHCP snooping.00 to 100. The port blocks traffic when the rising threshold is reached. D. The range is 0.00. and its associated VLAN number. In which three ways does this command impact the traffic? (Choose three. Reference: http:// www. An entry in this table has an IP address. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor. The range is 0.html#wp1069615 107. By de. or unicast storm control. You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering. A port access control list (ACL) is applied to the interface.The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server.Configure broadcast. easier way to help you pass any IT exams. The switch resumes forwarding broadcasts when they are below 65% of bandwidth.cisco. (Optional) For level-low. cast} level {level [lev-The keywords have these meanings: el-low] | pps pps [pps-low]} For level. IP source guard is supported only on Layer 2 ports.00 to 100. If you do not configure a falling suppression level. the broadcast keyword was used so only broadcast traffic is limited. B. multicast.2_25_see/configuration/ guide/3550SCG/swtrafc. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth.cast | multicast | unifault.  traffic based on the DHCP snooping binding database and on manually configured IP source bindings. In this case. it is set to the rising suppression level. including access and trunk ports. This value must be less than or equal to the rising suppression value.) A.html 108.

switch(config)# switchport port-security aging type inactivity E.cisco.-------------------0010.1545 Dynamic 2 FastEthernet0/5 110. Which option decreases consumption of bandwidth used by broadcast traffic? A. switch# show port-security C. switch(config)# errdisable recovery interval 180 B. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port.1540 Dynamic 2 FastEthernet0/5 0010.0de0. switch# show mac address-table B. including the switch port that the particular host is using. switch(config)# errdisable recovery cause psecure-violation C.) A.e289 Dynamic 1 FastEthernet0/1 0010. The safer . you can bring it out of this state automatically by configuring the errdisable recovery cause psecure-violation global configuration command or you can manually reenable it by entering the shutdown and no shut down interface configuration commands. switch# show ip arp inspection E.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. 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.While troubleshooting a network outage. 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 ------------------. Which two commands help trace this PC when the MAC address is known? (Choose two.pdf 109.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec. integrated routing and bridging 55 / 121 . switch# show mac address-table address <mac address> Answer: AE Explanation: These two commands will show the MAC address table.7b00. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. SDM routing C.---. easier way to help you pass any IT exams. Reference: http://www. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state.  Which command accomplishes this task? A.7b00. If a port is in per-VLAN errdisable mode. This is the default mode.-----------. storm control B. Cisco IOS parser D. switch# show ip verify source D. switch(config)# switchport port-security protect D.

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

login authentication default Answer: A 57 / 121 . SLIP. none required B.com/c/en/us/td/docs/switches/lan/catalyst2940/ software/release/12- 1_19_ea1/configuration/guide/2940scg_1/sw8021x.ht ml 113. the authentication service is transparent to the client. RADIUS with EAP Extension B. TACACS+ C. Which login credentials are required when connecting to the console port in this output? A. username cisco with password cisco C. This can include a PPP.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathor.  Filtering and Firewalls" part of this book. Reference: http://www. Reverse Access--Applies to reverse Telnet sessions. RADIUS with CoA D.1x? A. no username with password linepass D.pdf 114.Refer to the exhibit. ·Network--Applies to network connections. the authentication server--performs the actual authentication of the client.Which authentication service is needed to configure 802.1x. 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. easier way to help you pass any IT exams. or ARAP connection. EXEC--Applies to the attributes associated with a user EXEC terminal session.cisco. Because the switch acts as the proxy. The safer . Reference: http://www. The Remote Authentication Dial-In User Service (RADIUS) security system with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server. associated with a specific privilege level.cisco. When you create a named method list. RADIUS using VSA Answer: A Explanation: With 802. Command authorization attempts authorization for all EXEC mode commands. you are defining a particular list of authorization methods for the indicated authorization type. Commands--Applies to the EXEC mode commands a user issues. including global configuration commands.

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

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

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

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

VTP pruning D. which creates excessive traffic and degrades network performance. Reference: http://3c3cc. The safer .storm is detected? A. D.cisco. 802. 802.1X on the same interfaces.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.1X processes packets before port security processes them. port security C. or the shutdown and no shut-down commands to reenable ports. Port security secures the MAC addresses that 802. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN.2SX/configuration/ guide/book/storm. It allows port security to secure the IP address that 802.  broadcast traffic? A. router(config-if)#storm-control action error D. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure. C. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack.1X and Port Security You can configure port security and 802. B. It allows 802. Answer: A Explanation: 802.Which command would a network engineer apply to error-disable a switchport when a packet.1x on the same interface.1x to secure the MAC address that port security authenticates.A network engineer configures port security and 802.1x authenticates. Which option describes what this configuration allows? A. It allows port security to secure the MAC address that 802. storm control B.1x to secure the IP address that port security authenticates. so when you enable both on an interface. · Use the error disable detection and recov-ery feature. Reference: http://www. 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.1X authenticates. router(config-if)#storm-control action shutdown B.html 125.1x authenticates. · Enter the no storm-control action shut-down command to revert to the default action (drop). router(config-if)#storm-control action trap C. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. multicast. easier way to help you pass any IT exams.1X is already preventing inbound 62 / 121 .com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s.pdf 124. It allows 802. router(config-if)#storm-control action enable Answer: A Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface.

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

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

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

5 C.0.(generally through through ARP DHCP) DHCP) requesting a unique virtual gateway.18 IP 112 224.0. 1 B. int. -Round-Robin algorithm (de-fault). When a tracked 66 / 121 . the ..wordpress.Use virtual ip dress.. if not.optimal loadbalanc-algorithm ing.address. 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. traffic. 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.  D.0..(generally through ing.1 group (Active -1 master router.Multiple VRRP rithm. Reference: http://cciethebeginning.2 udp 1985 224. int. 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.up to Router role 1024 virtual routers (GLBP groups) per physical inter-face.ip address.0. one with highest pri. routers. easier way to help you pass any IT exams. 10 D..Host-de-group per in.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.0.0. ority become master. 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). -Can use real router -Use virtual ip ad.up to 4 AVF routers on the 1 active router.102 udp (version1) 3222 224.. The safer .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 .1 standby router.1 or Virtual For-or more backup more listening warder) passing routers.0.com/2008/08/23/router-highavailability-protocol- comparison-2/ 134..0.group per in-pendent algo-terface/SVI/routed terface/SVI/routed rithm.

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

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

spanning-tree portfast bpdufilter default D.) A. then it indicates that this router is receiving its own hello packets sent.0. If the MAC address of the interface is the same as the one reported in the error message. When configuring the multicast boundary command. permit the Multicast address by permit 224. If the interface MAC address is different from the one reported in the error message. Which command can prevent BPDU transmission on this port? A.  Which option describes the reason for this message in a GLBP configuration? A. spanning-tree bpduguard default C. The safer .255. Unavailable GLBP active forwarder B.0. LACP port priority 69 / 121 . Incorrect GLBP IP address C.102 and User Datagram Protocol (UDP) port 3222 (source and destination). then some other device with a MAC address reports this error message.255. Reference: http://www. HSRP configured on same interface as GLBP D. issue the show interface command to verify the MAC address of the interface.shtml#dr 141. easier way to help you pass any IT exams. a network analyzer is connected to Port f0/1 of a LAN switch. When troubleshooting a network problem. Verify the spanning-tree topology and check if there is any layer2 loop. LACP system priority B.0.0 15.Refer to the exhibit. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. In order to resolve this issue. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.cisco. spanning-tree portfast bpduguard enable B.0. no spanning-tree link-type shared Answer: C 142.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520.255.

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

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

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

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

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

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

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

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

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

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

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

Which statement about the status of the EtherChannel is true? A. It is an access port configured for a phone and a PC B. 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. the network administrator clears the port security on the new network switch port connecting to the PC. GLBP uses UDP port 3222 (source and destination) for hello messages.  C. but the port keeps going back into err-disabled mode. Port security sticky exists on the new network switch port B. Port security must be disabled on all access ports D. Port security sticky is disabled on the new network switch port C. It is an access port in VLAN 700 Answer: B 181.An enterprise network has port security sticky enabled on all access ports. The EtherChannel is down because of a mismatched EtherChannel protocol 81 / 121 . Port security is still enabled on the older network switch port E.Refer to the exhibit. D. After the PC is moved. The EtherChannel is operational and configured for PAgP B. An engineer has run the show EtherChannel summary command and the output is displayed.18. It is a trunk port and the native VLAN is VLAN 700 D. Which two factors are possible causes of this issue? (Choose two) A.Refer to the exhibit. It is a trunk port and the native VLAN is VLAN1 C. HSRP group members communicate using multicast address 224.0.0. Answer: D 180. easier way to help you pass any IT exams. The safer . Which statement about the current configuration on port GigabitEthernet2/0/1 is true? A.

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

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

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

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

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

Enable VTP pruning on every switch in the domain. Any loss of connectivity generates a TC BDPU Answer: B 205. deletes C. The IP address 172. If either an edge port or a nonedge port move to a block state.16.16. B. The safer . intercepts D.What action should a network admin take to enable VTP pruning on an entire management domain? A. discads F. which three statements about HSRP are true? (Choose Three) A. The router with IP address 172.111 B.16.Refer to the exhibit.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A.11.16.11.16. The router with IP address 172.11.115 is the virtual HSRP IP address E. logs B.111 D. The final active router is the router with IP address 172. then a TC BDPU is generated D. Enable VTP pruning on a VTP server in the management domain.16. Enable VTP pruning on any client switch in the domain.11. Answer: D 206.112 has nonpreempt configured 87 / 121 . bypasses Answer: ACE 204. Only nonedge ports moving to the forwarding state generate a TC BDPU C.Which statement is true about RSTP topology changes? A. accepts E.111 has preempt configured C. Enable VTP pruning on any switch in the management domain D. The other side of the interface is set as access D. Only edge ports moving to the blocking state generate a TC BPDU E.11. Any change in the state of the port generates a TC BDPU B.  C.11. The priority of the router with IP address 172.112 is preferred over the router with IP address 172. The switchport command is missing from the configuration Answer: A 203. Based on the debug output. easier way to help you pass any IT exams. C.

Routing should not be performed between VLANs located on separate switches D. If BPDUs are received by a port configured for PortFast.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. easier way to help you pass any IT exams. The safer . port security C. based on the output what is the problem A. routing should occur at the distributionlayer. then PortFast is disabled and the BPDUs are processed normally. If BPDUs are received by a port configured for PortFast.16. he notices the error message on Switch 2 (error message channel-missconfiguring error). LACP B. the etherchannel protocol on switch 1 is not correct D. the port transitions to the forwarding state.What is the effect of configuring the following command on a switch? Switch(config)# spanning-tree portfast bdpufilter default A. Answer: ABD 207. the etherchannel interface of switch 2 is not configured Answer: C 210.  F. they are ignored and none are sent.Refer to the exhibit. PAgP Answer: A 211.11. B. the etherchannel on the switch 1 using incorrect member port B. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209. Otherwise. the etherchannel interface of switch 1 is not configured C. Vlans should be local to a Switch E. 88 / 121 . Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208. If BPDUs are received by a port configured for PortFast.When using EtherChannel misconfiguration guard.112 is using default HSRP priority. An engineer is configuring an etherchannel between two switches. The router with IP address 172. Routing may be performed at all layers but is most commonly done at the core and distribution layers C. C. B. Routing should occur at the access layer if voice VLANs is utilized. which technology is used to prevent this type of misconfiguration from affecting the network? A. STP D. D.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

2 255. HSRP allows one router to automatically assume the function of the second router if the second router starts D. The safer .2 255.255. The no standby priority command assigns a priority of 100 to the router D.10 D.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10.10. HSRP provides redundancy and load balancing Answer: ABD 281. B.255. The active router number Answer: E 280.2 255. The VRRP group number E.0 Switch_B(config-if)#standby 1 priority 195 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10.255.10.255.255. The HSRP group number F.10.10.10 Switch_B(config-if)#standby 1 track interface fa 1/1 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. easier way to help you pass any IT exams.10. When two routers in an HSRP standby group are configured with identical priorities. Switch_B(config-if)#ip address 10. the standby group-number priority priority-value global configuration command must be used.255. HSRP allows one router to automatically assume the function of the second router if the second router fails C.10. The default priority of a router is zero (0). To assign the HSRP router priority in a standby group. the router with the highest configured IP address will become the active router Answer: CE 282.10.10. Switch_B(config-if)#ip address 10. Which of the following describe reasons for deploying HSRP? (Choose three) A. The HSRP router number D.2 255.  C.Which two statements about the HSRP priority are true? A.Refer to the exhibit. HSRP provides redundancy and fault tolerance B. Switch_B(config-if)#ip address 10. C.10.255. Assuming that preempting has also been configured. Switch_B(config-if)#ip address 10. the router with the lowest priority in an HSRP group would become the active router E.HSRP has been configured between two Company devices.10.10 C.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 .10.255.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10.10.10.10.

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

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

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

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

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

) A. Downstream links from Distribution to Access Switches C. 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. NA Answer: AB Explanation: A & B are right 1. 20 priority root D. On Layer 3 Switches. switchport trunk allowed vlan remove vlan 100 B. 80. Source MAC B.101-250 C. Destination MAC Answer: A 309.99-250 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 . Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two. 20 root primary Answer: BD 311. The safer . Answer: AB 310. spanning-tree mst vlan 10.80. spanning-tree mst 1 priority 1 F.  A.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two. switchport trunk allowed vlan except vlan 100 D.) A.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1.switchport trunk allowed vlan 1. spanning-tree mstp vlan 10. Destination IP D.80. B.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. All non-root ports of the Access Switches.EXHIBIT . Source-dest MAC C. easier way to help you pass any IT exams.after applying the question command: switchport trunk allowed vlan 1. spanning-tree mst 1 root primary C.) A.Refer to the exhibit. spanning-tree mstp 1 priority 0 B. Access Switches to uplink ports to Distribution Switches D. switchport trunk allowed vlan 1-80. spanning-tree mst 1 priority 4096 E. 99.

The safer .) A. HSRP uses multicast address 224. An exhibit with spanning-tree. which is against what is required in the question 312. NA Answer: AB 315.A question about the priority of a Stackwise switch.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. C. na 111 / 121 .0. help in preventing loops C. na D. allowed all vlans except 100. B. Have to use errdisable recovery C. easier way to help you pass any IT exams.EXHIBIT INCLUDED.) A. Master member is selected based on member's priority B. NA D.  Switch(config-if)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. provides backup for fiber B. B. (CONCEPT ONLY) A.0. NA D. NA Answer: A 314.What is the benefit of UDLD? A.2 and uses UDP port 1985 B. removes loops D. (CONCEPT ONLY) A.A question about port number and multicast address of HSRP. na C. The spanning-tree mode is IEEE.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-99. We have to configure shutdown and no shutdown. which is true? (There’s an exhibit that shows f0/7 receive BPDU. determines switch path Answer: B 313. The command spanning-tree mode IEEE was implemented. Protocol used was IEEE.When no spanning-tree bpdu guard enable is configured in f0/7. na Answer: A 316. (Choose two.

na C. B. (CONCEPT ONLY) A. na Answer: A 320.com D. B.Refer to the exhibit 112 / 121 .A question about the port number and multicast address of VRRP. Tag is removed and packet is forwarded of the VLAN mentioned in the tag. na D.A question about the port number and multicast address of GLBP.0. na Answer: A 318. easier way to help you pass any IT exams. na D. packet is dropped Answer: D 321. na C.0. B. GLBP uses multicast address 224.102 with UDP port 3222. (CONCEPT ONLY) A. na D.Behavior of an access port when a tagged packet is received other than the access VLAN value.0. na Answer: A 317.hh010.0. tag is removed and packet is forwarded on the VLAN of the access port C. 1 . The safer .  C. VRRP uses multicast address 224. (CONCEPT ONLY) A. na D.A question about the number of Active Virtual Gateways (AVG) that can be used. B.only one can be elected on a switch. na C. A.18 and uses UDP port 112. http://bbs. na Answer: A 319.

68 bytes 113 / 121 . 1522 bytes Answer: D 324.Which option is the minimum frame size for an 802. Answer: AB 322.1Q frame A.  A network engineer deployed an older switch with the same spanning-tree priority as the existing root.) A. On the designated root switch downlinks to the access layer. NA Answer: A 323. Globally on all network switches. B. On the access layers root facing ports D. 64 bytes B. 1518 bytes D. B. link stays up D. 68 bytes C. udld setting udld setting int f0/5 udld setting aggressive What happens if interface f0/5 has been damaged? A. easier way to help you pass any IT exams. In which two locations should the Spanning Tree protocol root guard feature be implemented? (Choose two. All links go down C. Other interface will recover.Which option is the maximum frame size for an 802. On all of non-root switch facing ports of the access layer C. which caused a network outage. The safer . 64 bytes B.1Q frame? A.A question about UDLD. On Layer 3 boundaries in the distribution layer E.

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

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E. active-desirable
Answer: CD

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

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

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

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

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

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

116 / 121

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

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

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

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

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