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

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

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

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

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

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

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

Without VTP pruning. This path is different than using the root port. The best explanation for why switch C is not seeing traffic from only some of the VLANs. but Switch C is not receiving traffic from certain VLANs. Answer: A Explanation: RSTP works by adding an alternative port and a backup port compared to STP.After the recent upgrade of the switching infrastructure. B.1D STP. VTP pruning is configured globally on all switches and it removed VLANs from the trunk interface that is connected to Switch C. The administrator has defined the switch as the root in the STP domain. The 10 / 121 . is that VTP pruning has been configured." What is the reason for this change? A. 16. The safer .  15. a switch floods broadcast. VTP pruning is disabled by default. The trunk between Switch A and Switch B is misconfigured. easier way to help you pass any IT exams. The new switches are using RSTP instead of legacy IEEE 802. The port roles have been adjusted based on the interface bandwidth and timers of the new Cisco Catalyst switches.Refer to the exhibit. Answer: C Explanation: VTP pruning increases network available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to reach the destination devices. the network engineer notices that the port roles that were once "blocking" are now defined as "alternate" and "backup. B. C. D. These ports are allowed to immediately enter the forwarding state rather than passively wait for the network to converge. IEEE 802.1D STP and PortFast have been configured by default on all newly implemented Cisco Catalyst switches. The VTP revision number of Switch B is higher than that of Switch A. A VTP authentication mismatch occurred between Switch A and Switch B. Switch A. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. multicast. What would cause this issue? A. D. 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. and C are trunked together and have been properly configured for VTP. Switch B has all VLANs. C. VTP pruning blocks unneeded flooded traffic to VLANs on trunk ports that are included in the pruning-eligible list. B.

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

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

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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

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

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

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

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

you cannot convert from VTP version 3 to version 1 or 2. a network engineer notices that none of the VTP clients are receiving the updates.com/servlet/JiveServlet/previewBody/14792-102-1. The VTP server must be reloaded. What is the problem? A. E. D. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. The VTP version number must be set to version 3. easier way to help you pass any IT exams. Reference: http://www.1Q or ISL trunking encapsulation. but it does not appear in plain text in the configuration. If extended VLANs are configured.  Explanation: Switches such as the Catalyst 3550 that are capable of either 802.com/en/US/docs/switches/lan/catalyst3560/software/ release/12. VTP versions 1 and 2 propagate only VLANs 1 to 1005. B. When you enter the secret keyword. C. Reference: https://learningnetwork. C. After each update to the VTP server. Restart the VTP process on the new switch. When hidden. the network engineer notices that the new switch is not receiving the list of VLANs from the server. the key associated with the password is saved in hexadecimal format in the running configuration.cisco. The first thing that should be done is to verify that the trunk ports are connected and up. it takes up to 4 hours propagate. 37.After configuring new data VLANs 1020 through 1030 on the VTP server. Reload the VTP server. Reload the new switch. After verifying all VTP settings. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command.A network engineer is extending a LAN segment between two geographically separated data centers. VTP must be stopped and restarted on the server.html#wp1316856 38. the secret key from the password string is saved in the VLAN database file. 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. Instead. you can directly configure the password secret key. B.PDF 36.57313/ Dynamic%20Trunking%20Protocol. D.cisco. Which action resolves this problem? A. Support for extended range VLAN (VLANs 1006 to 4094) database propagation.A network is running VTPv2. You must reenter the password if you enter a takeover command in the domain. Verify connected trunk ports. The safer . Another switch in the domain has a higher revision number than the server. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? 20 / 121 .2_52_se/config uration/guide/swvtp.

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

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

enable the STP PortFast feature. Spanning-Tree FastPort D. The port still participates in STP.com/library/content.com/document/11836/how-define-vlans-allowed-trunk. they require the switchport to enter a forwarding state immediately. the port eventually transitions into STP blocking mode.For client server failover purposes. The safer . the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state.informit. Which spanning-tree feature satisfies this requirement? A.9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec 23 / 121 .link 44.cisco.Which command does a network engineer use to verify the spanning-tree status for VLAN 10? A. Spanning-Tree Fast Forward Answer: D Explanation: In order to allow immediate transition of the port into forwarding state.aspx? b=CCNP_Studies_Switching&seqNum=36 45. switch# show spanning-tree brief D.f2d2. easier way to help you pass any IT exams. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 . PortFast immediately transitions the port into STP forwarding mode upon linkup. switch# show spanning-tree vlan 10 brief Answer: A Explanation: Command Description show spanning-tree Displays information about the spanning-tree state. For their disaster recovery feature to operate successfully. Spanning-Tree Timers C.  Reference: https://supportforums. So if the port is to be a part of the loop.4180 Cost 9 Port 216 (Port-channel21) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32778 (priority 32768 sys-id-ext 10) Address 001c. switch# show spanning-tree summary E. Example output: SW2#show spanning-tree vlan 10 VLAN0010 Spanning tree enabled protocol rstp Root ID Priority 24586 Address 0014. Spanning-Tree PortFast E.24 Switch-C(config-if-range)# spanning-tree portfast Reference: http://www. Rapid Spanning-Tree B. switch# show spanning-tree bridge C.57d8. switch# show spanning-tree vlan 10 B.

html 46.216 P2p Po23 Altn BLK 9 128. 24 / 121 . connected to two Building Distribution submodule Switches D1 and D2. D. If the switch hears a VTP advertisement it will automatically learn the VTP domain name. Answer: C Explanation: By default. In this setup.--------. a switch will have a domain name of NULL and no password.---.A network engineer is setting up a new switched network.Nbr Type ------------------. Which Spanning Tree Protocol should be used to reduce switch resources and managerial burdens that are associated with multiple spanning-tree instances? A. B. If all switches currently have the default VTP domain name "null". VTP summary advertisements are sent out of all ports with the new domain name. RPVST+ Answer: C Explanation: Multiple Spanning Tree (MST) extends the IEEE 802. VLANs. Figure 3-15 shows a common network design. Contained in a summary advertisement: VTP version Domain name Configuration revision number Time stamp MD5 encryption hash code Reference: https://rowell. uses a minimum number of STP instances to match the number of physical topologies present.--------------------------.232 P2p Reference: http://www. The network is expected to grow and add many new VLANs in the future.  Aging Time 300 sec Interface Role Sts Cost Prio.-------.cisco. on the other hand. easier way to help you pass any IT exams. PVST+ E.--.com/en/US/docs/ios/lanswitch/command/reference/lsw_s2. The safer . MST.net/configuring-cisco-vtp/ 47. RSTP B.1w RST algorithm to multiple spanning trees. Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database. The switch with the non-default domain name restores back to "null" upon reboot.Po21 Root FWD 9 128. C. Switches with higher revision numbers does not accept the new domain name. 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.dionicio. PVRST+ runs STP instances for each VLAN and does not take into consideration the physical topology that might not require many different STP topologies. All other switches with the default domain name become VTP clients. PVST C. and the configuration revision number. featuring an access Switch A. MST D.A new network that consists of several switches has been connected together via trunking interfaces. which statement describes what happens when a domain name is configured on one of the switches? A.

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

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

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

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

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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1q frame? A.com/en/US/docs/switches/lan/catalyst6500/ios/12. the port should be configured as a trunk port.org/wiki/IEEE_802.  http://www. The hexadecimal values of 0x000 and 0xFFF are reserved. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 .What is the size of the VLAN field inside an 802. html 64. 8-bit B. allowing up to 4. If more than one VLAN is needed. All other values may be used as VLAN identifiers.2SX/configuration/guide/vtp. The safer . 0 B.1Q 65. 1 C.wikipedia.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A.Refer to the exhibit. easier way to help you pass any IT exams. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN. 2 D.094 VLANs Reference: http://en. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs.cisco. 66. 12-bit C. 16-bit D.

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

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

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

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

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

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

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

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

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

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

C. Logical port Fa0/13. and all must be configured as either Layer 2 or Layer 3 interfaces.html 86. Fa0/14.Refer to the exhibit. Fa0/14. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol. and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol. Fa0/14.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. All interfaces in each EtherChannel must be the same speed. Physical port Fa0/13. The protocol used for this port channel shows as LACP. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. which is a standards based 43 / 121 . The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 8 Gbps (Gigabit EtherChannel) between your switch and another switch or host. D. Logical port Fa0/13. Fa0/14. easier way to help you pass any IT exams. 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. Physical port Fa0/13. Which statement about switch S1 is true? A. B.cisco. The safer .  Answer: A Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol. Reference: http://www. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol.

Within each MST region.What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802.1d BPDU.When two MST instances (MST 1 and MST 2) are created on a switch. for a total of 3 instances.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired. and the special 0 instance. 87. Reference: http://www.1D switch and starts using only 802. but when a RSTP switch receives a 802. and RSTP BPDUs are sent. 4 Answer: C Explanation: Unlike other spanning tree protocols.1d to communicate. MST establishes and maintains IST. as opposed to PAgP. but when a RSTP switch receives an 802. which is Cisco proprietary. there will be the 2 defined MST instances. it does not respond with a 802. While this timer is active.1d BPDU and eventually the two switches run 802. B.1d BPDU. When a port is initialized. it restarts the timer and starts using RSTP BPDUs on that port. 802. 802. if the RSTP switch is using 802. D. known as the IST.1d does not understand RSTP BPDUs because they are different versions.com/c/en/us/td/ docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/spantree. and CST spanning trees: An IST is the spanning tree that runs in an MST region.1d to communicate. but when a RSTP switch receives a 802. Answer: A Explanation: For backward compatibility with 802. All of the other span. If the switch receives an 802.1d understands RSTP BPDUs because they are the same version. The IST is the only spanning tree instance that sends and receives BPDUs.1D BPDUs.1d BPDU. RSTP selectively sends 802.cisco. MST maintains multiple spanning tree instances.1D configuration BPDUs and TCN BPDUs on a per-port basis.1d BPDU. in which all the spanning tree instances are independent. it does not respond with a 802.lated within MST BPDUs. The safer . it responds with an 802. the switch processes all BPDUs received on that port and ignores the protocol type. All other MST instances are numbered from 1 to 4094.1d does not understand RSTP BPDUs because they are different versions. Instance 0 is a special instance for a region.1d BPDU and eventually the two switches run 802. 2 C. CIST.html 88. which are encapsu.1D switches.1d BPDU and eventually the two switches run 802.  protocol. easier way to help you pass any IT exams.1d to communicate.1d understands RSTP BPDUs because they are the same version. it responds with a 802. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent). what is the total number of spanning-tree instances running on the switch? A. 802.ning tree instance information is contained in MSTP records (M-records). 802. Because the MST BPDU 44 / 121 .1D BPDU after the port migration-delay timer has expired. However. In the case for this question. C. but when a RSTP switch receives a 802. 3 D.1d BPDU? A. it assumes that it is connected to an 802.1d BPDU. 1 B.

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

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

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

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

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

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

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

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

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

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

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.e289 Dynamic 1 FastEthernet0/1 0010. you can bring it out of this state automatically by configuring the errdisable recovery cause psecure-violation global configuration command or you can manually reenable it by entering the shutdown and no shut down interface configuration commands.cisco. 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 ------------------. switch(config)# switchport port-security aging type inactivity E. Cisco IOS parser D.1540 Dynamic 2 FastEthernet0/5 0010. Reference: http://www. switch(config)# errdisable recovery cause psecure-violation C. switch(config)# errdisable recovery interval 180 B.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec.  Which command accomplishes this task? A. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state. Which two commands help trace this PC when the MAC address is known? (Choose two.-----------. storm control B. switch# show ip verify source D. switch# show ip arp inspection E. Which option decreases consumption of bandwidth used by broadcast traffic? A. including the switch port that the particular host is using.) A. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port. This is the default mode. If a port is in per-VLAN errdisable mode.---.-------------------0010.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server.0de0. switch# show mac address-table B. switch(config)# switchport port-security protect D. The safer . easier way to help you pass any IT exams.7b00.While troubleshooting a network outage. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. SDM routing C. switch# show port-security C.pdf 109. 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.7b00.1545 Dynamic 2 FastEthernet0/5 110.

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

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

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

com/c/en/us/td/docs/ switches/lan/catalyst6500/ios/12. Reference: http://www. ip dhcp snooping trust B.cisco. storm control C. including the community and isolated host ports? A. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. the DHCP snooping binding database. make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled. isolated port C. ip dhcp trust D. On untrusted interfaces.cisco. 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. 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.com/c/en/us/ support/docs/switches/catalyst-3750-series. Dynamic ARP Inspection B. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command.cisco. promiscuous port B. ip dhcp snooping information Answer: A Explanation: When configuring DHCP snooping. the switch forwards the packet only if it is valid. easier way to help you pass any IT exams. and enable DHCP globally on the switch. If a Layer 2 LAN port is connected to a DHCP client. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch.html 118. Before globally enabling DHCP snooping on the switch. the switch forwards the packet without any checks. If a Layer 2 LAN port is connected to a DHCP server. Reference: http:// www.pdf 117.  Reference: http://www.2SX/configuration/guide/book/snoodhcp.html 119. The safer . including the community and isolated 59 / 121 .Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A.Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces.Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. VTP pruning D.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. The promiscuous port can communicate with all interfaces. community port D.2SX/configuration/ guide/book/snoodhcp. trunk port Answer: A Explanation: The types of private VLAN ports are as follows: Promiscuous--A promiscuous port belongs to the primary VLAN. ip dhcp snooping C.switches/72846-layer2-secftrs-catl3fixed.

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

the source IP address filter is applied on all the VLANs. It may also contain static entries that you have created. DHCP snooping database B. spanning-tree portfast D. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database. DHCP snooping must be enabled on the access VLAN for that interface.com/c/en/us/td/docs/switches/datacenter/nexus1000/hyperv/sw/5_2_1_s_m_1_ 5_2/ troubleshooting/configuration/guide/n1000v_troubleshooting/ n1000v_trouble_19dhcp.Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or 61 / 121 . 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. DHCP snooping B. this error message appears: Static IP source binding can only be configured on switch port. If you are enabling IP source guard on a trunk interface with multiple VLANs and DHCP snooping is enabled on all the VLANs. This database is built by DHCP snooping when it is enabled on the VLANs and on the device.Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. private VLAN Answer: A Explanation: IP Source Guard Configuration Guidelines You can configure static IP bindings only on nonrouted ports.cisco. which feature must be enabled on the access VLAN for that interface? A. dynamic ARP database C. If you enter the ip source binding mac- address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface. easier way to help you pass any IT exams. The safer . Drops invalid ARP packets. Reference: http:// www. When IP source guard with source IP filtering is enabled on an interface.  121.html 122.1x port-based authentication is enabled.html 123. storm control C. Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet. Reference: http://www.cisco.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. dynamic routing database D.When IP Source Guard with source IP filtering is enabled on an interface. You can enable this feature when 802.

port security C.1x to secure the IP address that port security authenticates. router(config-if)#storm-control action enable Answer: A Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface. easier way to help you pass any IT exams. multicast. storm control B. Port security secures the MAC addresses that 802. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. It allows port security to secure the IP address that 802. Which option describes what this configuration allows? A.  broadcast traffic? A. It allows 802. so when you enable both on an interface. 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 on the same interface.2SX/configuration/ guide/book/storm.html 125.1x to secure the MAC address that port security authenticates.com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s. Reference: http://3c3cc.Which command would a network engineer apply to error-disable a switchport when a packet. router(config-if)#storm-control action error D.A network engineer configures port security and 802. VTP pruning D. Reference: http://www. 802.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.pdf 124.1X and Port Security You can configure port security and 802. 802. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN. The safer .1x authenticates. It allows 802. · Use the error disable detection and recov-ery feature.cisco.storm is detected? A.1X authenticates. D. · Enter the no storm-control action shut-down command to revert to the default action (drop). It allows port security to secure the MAC address that 802.1X is already preventing inbound 62 / 121 . router(config-if)#storm-control action shutdown B. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack. B.1x authenticates. C. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure. or the shutdown and no shut-down commands to reenable ports. which creates excessive traffic and degrades network performance.1X on the same interfaces.1X processes packets before port security processes them. Answer: A Explanation: 802. router(config-if)#storm-control action trap C.

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

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

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

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

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

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

) A. spanning-tree bpduguard default C.255.cisco. Incorrect GLBP IP address C. no spanning-tree link-type shared Answer: C 142. a network analyzer is connected to Port f0/1 of a LAN switch. If the MAC address of the interface is the same as the one reported in the error message. When configuring the multicast boundary command. In order to resolve this issue. LACP port priority 69 / 121 . HSRP configured on same interface as GLBP D. Reference: http://www. Verify the spanning-tree topology and check if there is any layer2 loop.255.Refer to the exhibit. Which command can prevent BPDU transmission on this port? A. issue the show interface command to verify the MAC address of the interface.0.0. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues.  Which option describes the reason for this message in a GLBP configuration? A. The safer . then some other device with a MAC address reports this error message.0. permit the Multicast address by permit 224. Unavailable GLBP active forwarder B.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520. easier way to help you pass any IT exams. spanning-tree portfast bpdufilter default D.0.102 and User Datagram Protocol (UDP) port 3222 (source and destination). then it indicates that this router is receiving its own hello packets sent. If the interface MAC address is different from the one reported in the error message. spanning-tree portfast bpduguard enable B. When troubleshooting a network problem. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.255.shtml#dr 141.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four. LACP system priority B. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.0 15.

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

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

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

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

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

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

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

E.1 D.1.By default. learning Answer: A 168. The safer .Refer to the exhibit. Answer: CD 169. Layer 1 B. and VRRP are true? (Choose two. C. Layer 2 C. one standby router. HSRP supports up to 255 groups on the same switch or router. D.  A. easier way to help you pass any IT exams. Layer 7 Answer: B 167. Layer 3 D. what is the state of port security on a switch? A. disabled B.) A. Which option is the most likely explanation of the duplicate address message logged? A. 77 / 121 . spanning-tree loop B. HSRP is the preferred protocol to be used on multivendor environments. and many listening routers. VRRP has one master router. off D. HSRP misconfiguration C.Refer to the exhibit. a PC with IP of 10.10. a hardware problem Answer: B 170.Which two statements about HSRP. B. VRRP is a Cisco proprietary protocol. on C. GLBP. GLBP allows for a maximum of four MAC addresses per group.

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

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

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

It is a trunk port and the native VLAN is VLAN1 C. The safer . The EtherChannel is operational and configured for PAgP B. but the port keeps going back into err-disabled mode. After the PC is moved.  C.18. Which two factors are possible causes of this issue? (Choose two) A.0. Port security must be disabled on all access ports D. Port security sticky exists on the new network switch port B. It is a trunk port and the native VLAN is VLAN 700 D. Which statement about the current configuration on port GigabitEthernet2/0/1 is true? A. The EtherChannel is down because of a mismatched EtherChannel protocol 81 / 121 . easier way to help you pass any IT exams. Port security sticky is disabled on the new network switch port C. Which statement about the status of the EtherChannel is true? A.0. A network administrator moves a PC from one office desk to another. D.Refer to the exhibit. Answer: D 180. Port security is still enabled on the older network switch port E. the network administrator clears the port security on the new network switch port connecting to the PC. 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. It is an access port in VLAN 700 Answer: B 181. GLBP uses UDP port 3222 (source and destination) for hello messages. An engineer has run the show EtherChannel summary command and the output is displayed.Refer to the exhibit.An enterprise network has port security sticky enabled on all access ports. HSRP group members communicate using multicast address 224.

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

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

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

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

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

111 B. The router with IP address 172. intercepts D. Only nonedge ports moving to the forwarding state generate a TC BDPU C. Enable VTP pruning on any client switch in the domain. Answer: D 206. easier way to help you pass any IT exams.115 is the virtual HSRP IP address E. Any change in the state of the port generates a TC BDPU B. which three statements about HSRP are true? (Choose Three) A. C. The priority of the router with IP address 172.  C. deletes C. The final active router is the router with IP address 172. B.11. then a TC BDPU is generated D. Enable VTP pruning on any switch in the management domain D. The safer .11. bypasses Answer: ACE 204.112 has nonpreempt configured 87 / 121 .Which statement is true about RSTP topology changes? A. Based on the debug output. accepts E.11.16. The other side of the interface is set as access D. Only edge ports moving to the blocking state generate a TC BPDU E. Any loss of connectivity generates a TC BDPU Answer: B 205.What action should a network admin take to enable VTP pruning on an entire management domain? A.16. The IP address 172.Refer to the exhibit.16.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A.11.111 D. Enable VTP pruning on every switch in the domain.112 is preferred over the router with IP address 172. If either an edge port or a nonedge port move to a block state.11. discads F.16.16. Enable VTP pruning on a VTP server in the management domain. logs B.11.111 has preempt configured C.16. The router with IP address 172. The switchport command is missing from the configuration Answer: A 203.

If BPDUs are received by a port configured for PortFast. PAgP Answer: A 211.When using EtherChannel misconfiguration guard.  F. Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208.Refer to the exhibit. then PortFast is disabled and the BPDUs are processed normally. An engineer is configuring an etherchannel between two switches. they are ignored and none are sent.16. port security C. the etherchannel protocol on switch 1 is not correct D. D.112 is using default HSRP priority. If BPDUs are received by a port configured for PortFast. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209. the etherchannel on the switch 1 using incorrect member port B.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. Vlans should be local to a Switch E. the port transitions to the forwarding state. 88 / 121 . routing should occur at the distributionlayer. C.What is the effect of configuring the following command on a switch? Switch(config)# spanning-tree portfast bdpufilter default A. the etherchannel interface of switch 2 is not configured Answer: C 210. LACP B. which technology is used to prevent this type of misconfiguration from affecting the network? A. the etherchannel interface of switch 1 is not configured C. based on the output what is the problem A. If BPDUs are received by a port configured for PortFast. he notices the error message on Switch 2 (error message channel-missconfiguring error). B. Routing may be performed at all layers but is most commonly done at the core and distribution layers C. easier way to help you pass any IT exams. The router with IP address 172. Otherwise.11. STP D. B. Routing should not be performed between VLANs located on separate switches D. Answer: ABD 207. Routing should occur at the access layer if voice VLANs is utilized. The safer .

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Switch_B(config-if)#ip address 10.10. When two routers in an HSRP standby group are configured with identical priorities. B.255. HSRP provides redundancy and load balancing Answer: ABD 281.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 .255. easier way to help you pass any IT exams. HSRP allows one router to automatically assume the function of the second router if the second router starts D. Switch_B(config-if)#ip address 10. The safer .10. Which of the following describe reasons for deploying HSRP? (Choose three) A.10 Switch_B(config-if)#standby 1 track interface fa 1/1 B.2 255. Assuming that preempting has also been configured. The active router number Answer: E 280.255. Switch_B(config-if)#ip address 10.10. HSRP provides redundancy and fault tolerance B.2 255.10.10. The default priority of a router is zero (0).Which two statements about the HSRP priority are true? A.Refer to the exhibit. HSRP allows one router to automatically assume the function of the second router if the second router fails C. To assign the HSRP router priority in a standby group.255.10.10 C.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10. the router with the lowest priority in an HSRP group would become the active router E.10.10.10. Switch_B(config-if)#ip address 10.255.10.10.2 255.255.0 Switch_B(config-if)#standby 1 priority 195 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. 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.  C. the standby group-number priority priority-value global configuration command must be used.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.HSRP has been configured between two Company devices.2 255. The HSRP router number D.10.10 D.10.10.255. The HSRP group number F. The VRRP group number E. The no standby priority command assigns a priority of 100 to the router D. the router with the highest configured IP address will become the active router Answer: CE 282. C.

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

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

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

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

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

20 root primary Answer: BD 311. Access Switches to uplink ports to Distribution Switches D. 20 priority root D. spanning-tree mst 1 root primary C. Destination MAC Answer: A 309. spanning-tree mst vlan 10.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two. easier way to help you pass any IT exams. Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two. 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802.99-250 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 . Source-dest MAC C.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1. spanning-tree mstp vlan 10.) A. switchport trunk allowed vlan remove vlan 100 B. All non-root ports of the Access Switches. spanning-tree mst 1 priority 1 F.80.  A.) A.EXHIBIT .80. Answer: AB 310. spanning-tree mstp 1 priority 0 B. switchport trunk allowed vlan 1-80.Refer to the exhibit.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. 80.after applying the question command: switchport trunk allowed vlan 1.) A. Downstream links from Distribution to Access Switches C. Source MAC B. 99. spanning-tree mst 1 priority 4096 E. The safer .101-250 C. Destination IP D. switchport trunk allowed vlan except vlan 100 D. NA Answer: AB Explanation: A & B are right 1. On Layer 3 Switches. B.switchport trunk allowed vlan 1.

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

na Answer: A 320. na D.hh010.only one can be elected on a switch. B. http://bbs.0. VRRP uses multicast address 224.0.18 and uses UDP port 112. (CONCEPT ONLY) A.0. na Answer: A 318.0. A. Tag is removed and packet is forwarded of the VLAN mentioned in the tag.com D.102 with UDP port 3222.A question about the number of Active Virtual Gateways (AVG) that can be used. na Answer: A 319.Behavior of an access port when a tagged packet is received other than the access VLAN value. na D. B.A question about the port number and multicast address of GLBP. (CONCEPT ONLY) A. (CONCEPT ONLY) A. na Answer: A 317. GLBP uses multicast address 224.A question about the port number and multicast address of VRRP. na C. 1 . packet is dropped Answer: D 321. na C. na D.  C.Refer to the exhibit 112 / 121 . easier way to help you pass any IT exams. B. na C. The safer . na D. tag is removed and packet is forwarded on the VLAN of the access port C. B.

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

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

C. 1518 bytes
D. 1522 bytes
Answer: B

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

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

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

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

114 / 121

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

D. BPDU bridge
Answer: A

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

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

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

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

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

115 / 121

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

E. active-desirable
Answer: CD

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

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

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

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

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

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

116 / 121

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

A. It inserts a tag between the source address and length field... (Choose two.How to check the cause for an error disable in a interface after being connected? (Choose two.What happens when a destination SPAN port that is configured as EtherChannel receives traffic? A. show log B... Answer: AB 348. The safer .. B.) A.Storm control default violation. show status (or show interface [interface] status) Answer: AB 118 / 121 . disabled Answer: A 347. It adds an extra of 32 bits to the frame.  Answer: 346.1Q)..question about the characteristics of dot1Q (or 802. B. Answer: A 349. Nothing. Shutdown. easier way to help you pass any IT exams.) A.

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

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

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