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Exam : 300-115

Title : Implementing Cisco IP
Switched Networks

Version : V18.02

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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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in which the interface starts negotiations with other interfaces by sending LACP packets. The safer . Auto Places an interface into a passive negotiating state. desirable Places an interface into an active negotiating state.tion.cisco.  Reference: http://www. With the on mode. easier way to help you pass any IT exams.html 4. in which the interface starts negotiations with other interfaces by sending PAgP packets. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto B. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto D. a usable 3 / 121 . On Forces the interface into an EtherChannel without PAgP or LACP. in which the interface re.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.com/c/en/us/products/collateral/switches/catalyst-3750-series.Refer to the exhibit.switches/ prod_white_paper09186a00801b096a. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode passive C. 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. This setting minimizes the transmission of PAgP packets.

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

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

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

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

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

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

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

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

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

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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

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

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

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

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

it takes up to 4 hours propagate. When you enter the secret keyword.html#wp1316856 38. Which action resolves this problem? A. If extended VLANs are configured. you cannot convert from VTP version 3 to version 1 or 2. Restart the VTP process on the new switch.After configuring new data VLANs 1020 through 1030 on the VTP server. The first thing that should be done is to verify that the trunk ports are connected and up.cisco. You must reenter the password if you enter a takeover command in the domain. Support for extended range VLAN (VLANs 1006 to 4094) database propagation. B. After verifying all VTP settings. Reload the new switch. 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. a network engineer notices that none of the VTP clients are receiving the updates. VTP versions 1 and 2 propagate only VLANs 1 to 1005. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. Reference: https://learningnetwork.cisco. D. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command.A network is running VTPv2.57313/ Dynamic%20Trunking%20Protocol. The VTP server must be reloaded. C. The safer . the secret key from the password string is saved in the VLAN database file. Another switch in the domain has a higher revision number than the server. you can directly configure the password secret key. easier way to help you pass any IT exams.PDF 36. Reference: http://www. VTP must be stopped and restarted on the server. B. the network engineer notices that the new switch is not receiving the list of VLANs from the server. E. D.  Explanation: Switches such as the Catalyst 3550 that are capable of either 802. What is the problem? A. Verify connected trunk ports.A network engineer is extending a LAN segment between two geographically separated data centers. When hidden. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? 20 / 121 .com/en/US/docs/switches/lan/catalyst3560/software/ release/12.2_52_se/config uration/guide/swvtp. Instead. After each update to the VTP server. The VTP version number must be set to version 3. C. 37. but it does not appear in plain text in the configuration. Reload the VTP server.com/servlet/JiveServlet/previewBody/14792-102-1. the key associated with the password is saved in hexadecimal format in the running configuration.1Q or ISL trunking encapsulation.

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

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

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

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

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

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

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

The errdisable recovery command allows you to choose the type of errors that automatically reenable the ports after a specified amount of time. B. by default. 300 seconds D. LLDP-MED is an extension to LLDP that operates only between network devices. 100 seconds C.shtml 54. Reference: http://www. 28 / 121 . LLDP-MED is an extension to LLDP that operates between routers that run BGP.shtml 55. Issue the shutdown command and then the no shutdown interface mode command on the associated interface in order to manually reenable the ports. easier way to help you pass any IT exams. LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices.cisco.  Inline power Reference: http://www. LLDP-MED is an extension to LLDP that operates only between endpoint devices. 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. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC.com/en/US/tech/tk389/tk621/ technologies_tech_note09186a00806cd87b. C.cisco. The safer .cisco. the ports are still disabled if you have not configured errdisable recovery on the switch. 600 seconds Answer: C Explanation: After you fix the root problem.pdf 56. you must reenable the ports manually.com/en/US/docs/switches/metro/me3400/software/release/12. network policy. Reference: http://www. Each device sends periodic advertisements to a central device that builds the network topology. Each device broadcasts periodic advertisements to all of its neighbors. The show errdisable recovery command shows the default error-disable recovery state for all the possible conditions.Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true? A. and inventory management.2_58_se/configur ation/ guide/swlldp. C.What is the default value for the errdisable recovery interval in a Cisco switch? A. the timeout feature is disabled. 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. B. 30 seconds B. D. In this case.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b. Power over Ethernet.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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2SX/configuration/guide/vtp. The safer . allowing up to 4.1Q 65.Refer to the exhibit. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 .1q frame? A. All other values may be used as VLAN identifiers.com/en/US/docs/switches/lan/catalyst6500/ios/12.  http://www. If more than one VLAN is needed. The hexadecimal values of 0x000 and 0xFFF are reserved. 1 C.wikipedia. 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.org/wiki/IEEE_802.What is the size of the VLAN field inside an 802. 12-bit C. 16-bit D. html 64. 2 D.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. 8-bit B.cisco. 0 B. the port should be configured as a trunk port.094 VLANs Reference: http://en. 66. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. easier way to help you pass any IT exams.

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

  C. Instead. within the Ethernet payload C. Obviously. within the Ethernet FCS D. The safer . portfast B. When you disable voice VLAN. port-security C.1Q does not encapsulate the original frame.org/wiki/IEEE_802.1q header found? A. the port will actually be used as a trunk. Exhibit D Answer: A Explanation: In this case. 67. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports.cisco. the port has been configured both as a trunk and as a switchport in data vlan 10. a port can not be both.1Q 69.1Q tag in an Ethernet frame 802. the Port Fast feature is not automatically disabled. within the Ethernet header B.1_22_ea11x/co nfiguration/guide/swvoip. Exhibit C D. but not automatically disabled when a voice VLAN is removed? A. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. ignoring the switchport access VLAN 10 command. so even though Cisco IOS will accept both.html 68. spanning tree D. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). easier way to help you pass any IT exams.com/en/US/docs/switches/lan/catalyst2950/software/ release/12. for Ethernet frames.wikipedia. it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en.In which portion of the frame is the 802.Which feature is automatically enabled when a voice VLAN is configured.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. within the Ethernet source MAC address Answer: A Explanation: Insertion of 802. Reference: http://www.

bpdguard Answer: A Explanation: VTP ensures that all switches in the VTP domain are aware of all VLANs. VLANs 2 1001 are pruning eligible. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. port-security C.html#vtp_pruning 71. By default. However.Refer to the exhibit.cisco.1Q 35 / 121 . Disable VTP pruning and disable 802. storm control D. Then. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic. All switches in the network receive all broadcasts.  switch? A.php 70. but VLAN 1 can't be pruned because it's an administrative VLAN. even in situations in which few users are connected in that VLAN. all the clients in the VTP domain will automatically enable VTP pruning. The users in an engineering department that connect to the same access switch cannot access the network. there are occasions when VTP can create unnecessary traffic. VTP pruning B. easier way to help you pass any IT exams. VLANs 1-4094 C. C.1q. Enable VTP pruning and disable 802. Reference: http://www. VLANs 2-4094 Answer: C Explanation: VTP pruning should only be enabled on VTP servers. Which action resolves this problem? A. B. VLANs 2-1001 D.com/c/en/us/ support/docs/lan-switching/vtp/1055821. you will need to enable 802. Answer: C Explanation: Only VTP servers can add new VLANs to the switched network. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server. Both VTP versions 1 and 2 supports pruning. Update the VTP revision number. VLANs 1-1001 B. The safer .orbit-computer-solutions. Change VTP mode to server and enable 802.1q.com/VTP-Pruning. D.Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A. The network engineer found that the engineering VLAN is missing from the database. Reference: http://www.1q.

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

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

The "trunk pruning vlan 1" option is not a valid command. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning. however.aspx? b=CCNP_Studies_Switching&seqNum=25 76. Which Cisco IOS feature can be used to achieve this task? A. the trunk still remains up for other VLANs.html 77. which stops the inefficient flooding of frames where they are not needed. Support less than 1500 MTU B.com/library/content. B. Support 1522 layer 3 IP and IPX packet D.cisco. Native VLAN mismatches are detected via spanning tree and Cisco Discovery Protocol (CDP). Manually prune default VLAN with switchport trunk allowed vlans remove. Support 1504 MTU or higher C. Because the 802. Upgrade to VTP version 3 for advanced feature set support.Which action allows a network engineer to limit a default VLAN from being propagated across all trunks? A. The "vtp pruning" command prunes VLANs automatically. Answer: C Explanation: Manaully pruning the default VLAN (1) can only be done with the "switchport trunk allowed vlans remove" command. If spanning tree detects a native VLAN mismatch. VTP pruning B. 78.1Q tunneling (Q- in-Q) feature increases the frame size by 4 bytes when the extra tag is added.com/c/en/us/support/docs/switches/catalyst-6500-series.informit. Reference: http://www. access list C. C. Use trunk pruning vlan 1. spanning tree blocks local native VLAN traffic and the remote switch native VLAN traffic on the trunk. Reference: http://www.switches/24330- 185.  partially shut down the trunk port because having mismatched native VLANs can result in spanning-tree loops. Enable VTP pruning on the VTP server. D. switchport trunk allowed VLAN D.1q Q-in-Q encapsulation? A. VLAN access-map Answer: A Explanation: Cisco advocates the benefits of pruning VLANs in order to reduce unnecessary frame flooding.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. not via DTP messages. The safer . you must configure all switches in the service-provider network to be able to process maximum frames by increasing the switch 38 / 121 . easier way to help you pass any IT exams. Support 1547 MTU only Answer: B Explanation: The default system MTU for traffic on Catalyst switches is 1500 bytes.What is required for a LAN switch to support 802.

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

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

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

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

and all must be configured as either Layer 2 or Layer 3 interfaces. Physical port Fa0/13. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol. Answer: A Explanation: These three ports show that they are in Port Channel 1. and the (SU) means they are in use and operating at layer 2. Logical port Fa0/13. The safer . and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. Fa0/14. Physical port Fa0/13. Fa0/14. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol. Fa0/14.  Answer: A Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link.cisco. easier way to help you pass any IT exams. All interfaces in each EtherChannel must be the same speed. Which statement about switch S1 is true? A. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. C.Refer to the exhibit. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol. Logical port Fa0/13. The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 8 Gbps (Gigabit EtherChannel) between your switch and another switch or host. The protocol used for this port channel shows as LACP. which is a standards based 43 / 121 . Reference: http://www. D.html 86. Fa0/14. B.

the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent).1d BPDU. If the switch receives an 802.1D BPDUs.html 88. there will be the 2 defined MST instances. and RSTP BPDUs are sent. 1 B.1d understands RSTP BPDUs because they are the same version. for a total of 3 instances.1D configuration BPDUs and TCN BPDUs on a per-port basis. 802. 2 C. The IST is the only spanning tree instance that sends and receives BPDUs.1D switches.lated within MST BPDUs. but when a RSTP switch receives a 802. 87.1d does not understand RSTP BPDUs because they are different versions. 4 Answer: C Explanation: Unlike other spanning tree protocols. RSTP selectively sends 802. Answer: A Explanation: For backward compatibility with 802. it does not respond with a 802.1d BPDU? A. if the RSTP switch is using 802. but when a RSTP switch receives a 802. the switch processes all BPDUs received on that port and ignores the protocol type.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired. in which all the spanning tree instances are independent.1d to communicate. The safer . and the special 0 instance. All of the other span. Reference: http://www. it assumes that it is connected to an 802.1d BPDU. it responds with a 802.1d BPDU. but when a RSTP switch receives a 802. Because the MST BPDU 44 / 121 . which is Cisco proprietary. 3 D. B. it responds with an 802.cisco.  protocol. In the case for this question.1d BPDU and eventually the two switches run 802. 802. All other MST instances are numbered from 1 to 4094. D. what is the total number of spanning-tree instances running on the switch? A. 802. MST maintains multiple spanning tree instances. C.1d to communicate.1d BPDU and eventually the two switches run 802. When a port is initialized. MST establishes and maintains IST. known as the IST. CIST.What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802.1D BPDU after the port migration-delay timer has expired.1d BPDU.1d understands RSTP BPDUs because they are the same version. it does not respond with a 802. it restarts the timer and starts using RSTP BPDUs on that port.com/c/en/us/td/ docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/spantree. However.When two MST instances (MST 1 and MST 2) are created on a switch. easier way to help you pass any IT exams.1d does not understand RSTP BPDUs because they are different versions.1d BPDU. and CST spanning trees: An IST is the spanning tree that runs in an MST region. which are encapsu.1d BPDU and eventually the two switches run 802. 802.1D switch and starts using only 802.1d to communicate. as opposed to PAgP.ning tree instance information is contained in MSTP records (M-records). While this timer is active. but when a RSTP switch receives an 802. Within each MST region. Instance 0 is a special instance for a region.

and so forth. If all LAN ports have the same priority value.Refer to the exhibit. The CST interconnects the MST regions and single spanning trees. Answer: C Explanation: If a loop occurs. all VLANs are assigned to the IST. easier way to help you pass any IT exams. An MST instance is local to the region. but each MST in. root path cost. You can assign higher priority values to LAN ports that you want STP to select first and lower priority values to LAN ports that you want STP to select last.cisco. configurable in increments of 16.cantly reduced.  carries information for all instances. All MST instances within the same region share the same protocol timers. the number of BPDUs that need to be processed to support multiple spanning tree instances is signifi. such as root bridge ID. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports. even if regions A and B are interconnected.stance has its own topology parameters. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16. Which action is needed to modify the Layer 2 spanning-tree network so that traffic for PC1 VLAN from switch SW3 uses switchport f1/1 as a primary port? A.html 89. STP considers port priority when selecting a LAN port to put into the forwarding state. C.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. MST instance 1 in region A is independent of MST instance 1 in region B. Reference: http://www. The safer . A lower path 45 / 121 . Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. A CIST is a collection of the ISTs in each MST region.2SX/configuration/ guide/book/spantree. D. f1/0 and f1/1 have the same end-to-end path cost to the designated bridge. Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. By default. for example. The possible priority range is 0 through 240 (default 128). Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. B.

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

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

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

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

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

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

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

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

com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12- 2_25_see/configuration/guide/3550SCG/ swdhcp82. In this case.html#wp1069615 107. D. This value must be less than or equal to the rising suppression value. If you do not configure a falling suppression level. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth. Reference: http:// www. and its associated VLAN number. The safer . The range is 0. F. The port blocks traffic when the rising threshold is reached. IP source guard is supported only on Layer 2 ports. You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering. or unicast traffic as a percentage (up to two decimal places) of the bandwidth. Answer: CDF Explanation: storm-control {broad. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings).Configure broadcast. By de.cisco. The switch uses the IP source binding table only when IP source guard is enabled.00.The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server.After port security is deployed throughout an enterprise campus.) A. except for DHCP packets allowed by DHCP snooping.  traffic based on the DHCP snooping binding database and on manually configured IP source bindings. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. E. including access and trunk ports. The range is 0.html 108. They decide to configure the network to automate the process of re-enabling user ports. In which three ways does this command impact the traffic? (Choose three.com/c/en/us/td/docs/switches/lan/catalyst3550/ software/release/12. A port access control list (ACL) is applied to the interface. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor. multicast.cast | multicast | unifault. The switch drops broadcasts when they reach 75% of bandwidth. After IP source guard is enabled on an interface. multicast. The port forwards traffic when traffic drops below this level. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic. the network team has been overwhelmed with port reset requests. its associated MAC address. B. The switch resumes forwarding broadcasts when they are below 65% of bandwidth. Only broadcast traffic is limited by this particular storm control configuration. easier way to help you pass any IT exams. the switch blocks all IP traffic received on the interface. (Optional) For level-low. cast} level {level [lev-The keywords have these meanings: el-low] | pps pps [pps-low]} For level. storm control is disabled. the broadcast keyword was used so only broadcast traffic is limited. An entry in this table has an IP address. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold.00.2_25_see/configuration/ guide/3550SCG/swtrafc.cisco. specify the rising threshold level for broadcast. 54 / 121 . You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. or unicast storm control.00 to 100. it is set to the rising suppression level. Reference: http://www.00 to 100. C.

easier way to help you pass any IT exams.0de0.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec. Which two commands help trace this PC when the MAC address is known? (Choose two. including the switch port that the particular host is using.e289 Dynamic 1 FastEthernet0/1 0010. switch(config)# switchport port-security aging type inactivity E.While troubleshooting a network outage.1540 Dynamic 2 FastEthernet0/5 0010. switch# show mac address-table address <mac address> Answer: AE Explanation: These two commands will show the MAC address table. storm control B. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port.cisco. Reference: http://www. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. switch(config)# errdisable recovery cause psecure-violation C.---. Cisco IOS parser D.7b00. switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state.1545 Dynamic 2 FastEthernet0/5 110. switch(config)# switchport port-security protect D. 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. If a port is in per-VLAN errdisable mode.7b00. switch# show mac address-table B. switch# show ip verify source D.) A.-------------------0010. switch# show port-security C. switch# show ip arp inspection E.-----------. switch(config)# errdisable recovery interval 180 B. Here is an example output: Switch> show mac-address-table Dynamic Addresses Count: 9 Secure Addresses (User-defined) Count: 0 Static Addresses (User-defined) Count: 0 System Self Addresses Count: 41 Total MAC addresses: 50 Non-static Address Table: Destination Address Address Type VLAN Destination Port ------------------. 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.  Which command accomplishes this task? A. Which option decreases consumption of bandwidth used by broadcast traffic? A. The safer .pdf 109. This is the default mode.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. integrated routing and bridging 55 / 121 . SDM routing C.

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

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

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

ip dhcp snooping C.cisco. Before globally enabling DHCP snooping on the switch. trunk port Answer: A Explanation: The types of private VLAN ports are as follows: Promiscuous--A promiscuous port belongs to the primary VLAN. including the community and isolated 59 / 121 . make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled.2SX/configuration/guide/book/snoodhcp. VTP pruning D.com/c/en/us/td/docs/ switches/lan/catalyst6500/ios/12.cisco. The safer . promiscuous port B. The promiscuous port can communicate with all interfaces. Reference: http://www.html 118.Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A.switches/72846-layer2-secftrs-catl3fixed. ip dhcp trust D. Dynamic ARP Inspection B. including the community and isolated host ports? A. and enable DHCP globally on the switch. the switch forwards the packet only if it is valid.pdf 117. storm control C. follow these guidelines: DHCP snooping is not active until you enable the feature on at least one VLAN. 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. If a Layer 2 LAN port is connected to a DHCP server.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. If the ARP packet is received on a trusted interface. the DHCP snooping binding database. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command. easier way to help you pass any IT exams.Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces. community port D. On untrusted interfaces. 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.com/c/en/us/ support/docs/switches/catalyst-3750-series. If a Layer 2 LAN port is connected to a DHCP client.html 119. isolated port C.2SX/configuration/ guide/book/snoodhcp. Reference: http:// www. configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. ip dhcp snooping information Answer: A Explanation: When configuring DHCP snooping.cisco.Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A.  Reference: http://www. ip dhcp snooping trust B.

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

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

Reference: http://www.com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure.1x authenticates.1x to secure the MAC address that port security authenticates. router(config-if)#storm-control action trap C. slot/port} | {port-channel num-ber}} Step 2 Router (config-if)# storm-control (Optional) Configures traffic storm control to action shutdown error-disable ports when a traffic storm occurs.1x authenticates. · Use the error disable detection and recov-ery feature.1X 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. VTP pruning D. or the shutdown and no shut-down commands to reenable ports. so when you enable both on an interface. · Enter the no storm-control action shut-down command to revert to the default action (drop).cisco. It allows 802. It allows 802. Which option describes what this configuration allows? A. It allows port security to secure the MAC address that 802. router(config-if)#storm-control action error D.1X on the same interfaces. 802.2SX/configuration/ guide/book/storm. storm control B.Which command would a network engineer apply to error-disable a switchport when a packet.storm is detected? A.1X processes packets before port security processes them.pdf 124. which creates excessive traffic and degrades network performance. B. 802.1X is already preventing inbound 62 / 121 .1x on the same interface. router(config-if)#storm-control action shutdown B. multicast. Answer: A Explanation: 802. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack.1X and Port Security You can configure port security and 802. port security C. C. The safer . Port security secures the MAC addresses that 802. Reference: http://3c3cc. easier way to help you pass any IT exams.1x to secure the IP address that port security authenticates.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.A network engineer configures port security and 802. D.  broadcast traffic? A. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN.html 125. 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.

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

In other words. When a tracked interface fails. community port D. 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. 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. 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.org/ wiki/Private_VLAN 129. trunked Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. Host Ports: o Isolated Port (I-Port): Connects to the regular host that resides on isolated VLAN. backup interface D. In other words. it is a type of a port that is allowed to send and receive frames from any other port on the VLAN. which type of port must you configure the gateway router port as? A. access port Answer: A Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port.  D.When you configure a private VLAN.org/ wiki/Private_VLAN 130. This port communicates only with P-Ports. standby track Answer: D Explanation: The standby track interface configuration command ties the router hot standby priority to the availability of its interfaces and is useful for tracking interfaces that are not configured for HSRP. o Community Port (C-Port): Connects to the regular host that resides on community VLAN. Reference: http://en. This port communicates only with P-Ports. standby priority C. This port can communicate with anything else connected to the primary or any secondary VLAN. Promiscuous port (P-Port): The switch port connects to a router. This port can communicate with anything else connected to the primary or any secondary VLAN. the hot standby priority on the device on which tracking has been configured decreases by 64 / 121 . promiscuous port B. standby group B. Reference: http://en.wikipedia.wikipedia. Promiscuous port (P-Port): The switch port connects to a router. isolated port C. The safer . firewall or other common gateway device. easier way to help you pass any IT exams.Which configuration command ties the router hot standby priority to the availability of its interfaces? A. o Community Port (C-Port): Connects to the regular host that resides on community VLAN. firewall or other common gateway device.

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

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

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

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

255. Verify the spanning-tree topology and check if there is any layer2 loop. then it indicates that this router is receiving its own hello packets sent.0. easier way to help you pass any IT exams. Which command can prevent BPDU transmission on this port? A. Unavailable GLBP active forwarder B.  Which option describes the reason for this message in a GLBP configuration? A. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration.cisco. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. no spanning-tree link-type shared Answer: C 142. permit the Multicast address by permit 224.0. In order to resolve this issue. When troubleshooting a network problem. issue the show interface command to verify the MAC address of the interface. The safer . spanning-tree portfast bpdufilter default D.Refer to the exhibit.102 and User Datagram Protocol (UDP) port 3222 (source and destination).shtml#dr 141. If the interface MAC address is different from the one reported in the error message. Incorrect GLBP IP address C.0.0. then some other device with a MAC address reports this error message. LACP system priority B.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four.255. If the MAC address of the interface is the same as the one reported in the error message.0 15. spanning-tree portfast bpduguard enable B.) A. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.255. Reference: http://www. HSRP configured on same interface as GLBP D. a network analyzer is connected to Port f0/1 of a LAN switch. When configuring the multicast boundary command. spanning-tree bpduguard default C. LACP port priority 69 / 121 .com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520.

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

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

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

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

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

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

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

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

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

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

It stores the VTP domain password securely as a SHA-1 hash.0. B.102. D. Trap B. It supports the propagation of private VLANs. It adds an FCS field at the end of each VTP frame for consistency checking C. A standby HSRP router becomes active if it has a higher priority than the priority of the current active router E. C. the priority of an HSRP router is 200.0. A backup GLBP active virtual gateway can become active only if the current active virtual gateway fails. log E. E. which two actions can be configured to occur? (Choose two. It supports the use of AES to encrypt VTP messaging. redirect traffic D. Preemption is enabled by default. easier way to help you pass any IT exams. D. and VRRP is true? A.If StormControl is enabled on a port and the traffic reachesthe configured level. It is a trunk port and the native VLAN is VLAN1 C. It is a trunk port and the natrve VL AN m VLAN 700 D. notify admin C.Which two statements about default FHRP behavior are true? (Choose two. B.acOc indicates that default gateway redundancy is provided through GLBP.Which statement about HSRP. MAC address 0000. shut down Answer: AE 178. The safer . 80 / 121 . A VRRP backup virtual router becomes the master router if its priority is higher than the priority of the current master router.) A.) A. Unless specifically Configured.  A. GLBP.0c07. Answer: AE 177.Which two options are advantages of deploying VTPv3? (Choose two.) A. B. It is an access port configured for a phone and a PC B. It can be configured to allow only one VTP server to make changes to the VTP domain Answer: CE 179. VRRP group members communicate using multicast address 224. It is an access port in VLAN 700 Answer: B 176.

Answer: D 180. D. The EtherChannel is operational and configured for PAgP B.18.  C. The EtherChannel is down because of a mismatched EtherChannel protocol 81 / 121 . It is a trunk port and the native VLAN is VLAN 700 D. easier way to help you pass any IT exams. A network administrator moves a PC from one office desk to another.0. GLBP uses UDP port 3222 (source and destination) for hello messages. Port security is still enabled on the older network switch port E. It is a trunk port and the native VLAN is VLAN1 C.0. Port security sticky is still enabled on the older network switch port Answer: AE 182. After the PC is moved.An enterprise network has port security sticky enabled on all access ports.Refer to the exhibit. but the port keeps going back into err-disabled mode. The safer . It is an access port in VLAN 700 Answer: B 181. Port security must be disabled on all access ports D. Port security sticky is disabled on the new network switch port C. Which statement about the status of the EtherChannel is true? A. HSRP group members communicate using multicast address 224. It is an access port configured for a phone and a PC B. Which two factors are possible causes of this issue? (Choose two) A. Port security sticky exists on the new network switch port B.Refer to the exhibit. An engineer has run the show EtherChannel summary command and the output is displayed. Which statement about the current configuration on port GigabitEthernet2/0/1 is true? A. the network administrator clears the port security on the new network switch port connecting to the PC.

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

spanning-tree mstp 1 priority 0 B. easier way to help you pass any IT exams. Spanning-tree priority B. spanning-tree mstp vlan 10. The safer . all untagged traffic is tagged with VLAN 113 C. Interface description D.where are the templates stored? A. spanning-tree mst 1 root primary C. spanning-tree mst vlan 10.20 root primary Answer: BD 188. Interface Gi6/2 is the root port for VLAN 36 F. flash memory 83 / 121 . allow VLANs Answer: DE 189.20 priority root D. spanning-tree mst 1 priority 1 F. spanning-tree mst 1 priority 4096 E. all stack members B. stack master C. Trunk mode E. D. Which two commands ensure that DSW1 becomes root bridge for VLAN 10 and 20? A. The device is configured with the default MST region. On interface Gi5/1.In a switch stack is configured to use SDM template.which two attributes must match across the member ports?(choose two) A. Interface Gi5/1 is using an industry standard trunking protocol E. On interface Gi6/2.Refer to the exhibit.When a Layer 2 trunking EtherChannel is configured. Spanning-tree cost C. all untagged traffic is tagged with VLAN 600 Answer: DF 187.  B.

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

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

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

The router with IP address 172. deletes C. Enable VTP pruning on any switch in the management domain D. The final active router is the router with IP address 172.115 is the virtual HSRP IP address E. intercepts D. Only edge ports moving to the blocking state generate a TC BPDU E.111 has preempt configured C. then a TC BDPU is generated D. Enable VTP pruning on any client switch in the domain.11. The IP address 172. logs B.What action should a network admin take to enable VTP pruning on an entire management domain? A.16. discads F.16. The safer .111 D. bypasses Answer: ACE 204. which three statements about HSRP are true? (Choose Three) A.  C.112 has nonpreempt configured 87 / 121 .112 is preferred over the router with IP address 172. easier way to help you pass any IT exams.11.111 B. Enable VTP pruning on every switch in the domain. Answer: D 206. Based on the debug output.Refer to the exhibit. accepts E.16.Which statement is true about RSTP topology changes? A. The router with IP address 172.11.11. Any change in the state of the port generates a TC BDPU B.16. The priority of the router with IP address 172. If either an edge port or a nonedge port move to a block state.16. The switchport command is missing from the configuration Answer: A 203.11.16. Only nonedge ports moving to the forwarding state generate a TC BDPU C. Any loss of connectivity generates a TC BDPU Answer: B 205. Enable VTP pruning on a VTP server in the management domain. The other side of the interface is set as access D.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A. B.11. C.

Routing may be performed at all layers but is most commonly done at the core and distribution layers C. An engineer is configuring an etherchannel between two switches. they are ignored and none are sent. D. 88 / 121 . routing should occur at the distributionlayer.When using EtherChannel misconfiguration guard. LACP B.Refer to the exhibit. STP D. If BPDUs are received by a port configured for PortFast. the port transitions to the forwarding state. The safer . PAgP Answer: A 211.16. Routing should occur at the access layer if voice VLANs is utilized. C. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209.What is the effect of configuring the following command on a switch? Switch(config)# spanning-tree portfast bdpufilter default A. he notices the error message on Switch 2 (error message channel-missconfiguring error). which technology is used to prevent this type of misconfiguration from affecting the network? A. the etherchannel interface of switch 1 is not configured C. based on the output what is the problem A. Otherwise. Vlans should be local to a Switch E. easier way to help you pass any IT exams. Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208.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.112 is using default HSRP priority. B. the etherchannel protocol on switch 1 is not correct D. The router with IP address 172. Routing should not be performed between VLANs located on separate switches D. the etherchannel interface of switch 2 is not configured Answer: C 210.11. B. port security C.  F. If BPDUs are received by a port configured for PortFast. then PortFast is disabled and the BPDUs are processed normally. the etherchannel on the switch 1 using incorrect member port B. If BPDUs are received by a port configured for PortFast. Answer: ABD 207.

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

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

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

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

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

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

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

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

Change in port priority so traffic goes through DSW1 to DSW2 A. how the interface status is (or looks like) if misconfigured? A. STP D.There was another Exhibit about port priority. Link connected from PC1 to DSW2 is 4Gbps and DSW1 is 10Gbps. PC1 is connected to DSW1 and DSW2 (Root Bridge). DSW2: interface g1/0 E. 0x0806 97 / 121 .Which option TPI 802. what happens. DSW2: spanning-tree port priority 16 D.  C. Question is if you do "switchport trunk allowed vlan 2. spanning tree port priority B. DSW1: spanning-tree port priority 0 Answer: AB 244. (config-if)#spanning-tree etherchannel guard misconfig Answer: A 243. allowed VLANs on the trunk Answer: DE 242. shutdown Answer: A 245.4" on SW2.A question with an exhibit.If EtherChannel guard is configured. because you will remove VLANs 1 and 5 from trunk with this command. You should use "switchport trunk allowed vlan" to add additional VLANs into trunk Answer: A 246. There is a trunk with VLAN 1 and 5 allowed. The safer . trunk mode E. Ports towards PCs are in mode access VLAN 5 A. DSW1: interface g1/0 C. (config)#spanning-tree etherchannel guard misconfig B.3. DSW1: spanning-tree port priority 16 B. Port Security Answer: C 241. There is etherchannel trunk between DSW1 and DSW2. Default port prioirty is configured. spanning tree cost C.What should match during EtherChannel configuration? A. easier way to help you pass any IT exams. There are 2 SW and 2 PCs. interface description D.Core switch connected to 2 dis switches which connected 2 ASW. errdisabled B. The connection is lost between PCs.1Q tag? A.question on Spanning-tree EtherChannel misconfiguration A.

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

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

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

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

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

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

10.Refer to the exhibit. Assuming that preempting has also been configured.255. the router with the highest configured IP address will become the active router Answer: CE 282.255. The HSRP group number F.10 Switch_B(config-if)#standby 1 track interface fa 1/1 B.10.10. The safer .255. Switch_B(config-if)#ip address 10.255. easier way to help you pass any IT exams.255. The VRRP group number E. HSRP provides redundancy and fault tolerance B.10. Switch_B(config-if)#ip address 10.10.10 D.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. the router with the lowest priority in an HSRP group would become the active router E.  C.10.2 255.10.255.10. HSRP allows one router to automatically assume the function of the second router if the second router fails C.255.0 Switch_B(config-if)#standby 1 priority 195 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10.10. 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.10. C. To assign the HSRP router priority in a standby group.255. The default priority of a router is zero (0). The active router number Answer: E 280.Which two statements about the HSRP priority are true? A. The no standby priority command assigns a priority of 100 to the router D.10. Which of the following describe reasons for deploying HSRP? (Choose three) A. The HSRP router number D. B. Switch_B(config-if)#ip address 10.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 . HSRP allows one router to automatically assume the function of the second router if the second router starts D.10 C.10. the standby group-number priority priority-value global configuration command must be used.2 255.HSRP has been configured between two Company devices.2 255.2 255. Switch_B(config-if)#ip address 10.10.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10. HSRP provides redundancy and load balancing Answer: ABD 281.10. When two routers in an HSRP standby group are configured with identical priorities.

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

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

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

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

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

Source-dest MAC C. spanning-tree mst vlan 10.) A. 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. spanning-tree mstp 1 priority 0 B. All non-root ports of the Access Switches. On Layer 3 Switches.80.80. Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two.) A.switchport trunk allowed vlan 1. 80. B. 20 root primary Answer: BD 311.after applying the question command: switchport trunk allowed vlan 1.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two. switchport trunk allowed vlan remove vlan 100 B.  A. easier way to help you pass any IT exams. spanning-tree mst 1 priority 4096 E.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. Destination IP D. The safer . Access Switches to uplink ports to Distribution Switches D. switchport trunk allowed vlan except vlan 100 D. NA Answer: AB Explanation: A & B are right 1.101-250 C.Refer to the exhibit. 20 priority root D. spanning-tree mst 1 priority 1 F.EXHIBIT . switchport trunk allowed vlan 1-80. Source MAC B.99-250 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 1 now after applying “except 100”: Switch(config-if)#switchport trunk allowed vlan except 100 110 / 121 . Destination MAC Answer: A 309. 99. Answer: AB 310. spanning-tree mstp vlan 10.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1. spanning-tree mst 1 root primary C. Downstream links from Distribution to Access Switches C.) A.

help in preventing loops C. An exhibit with spanning-tree.  Switch(config-if)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. easier way to help you pass any IT exams. determines switch path Answer: B 313. na C.101-1005 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 none you can see that except 100. NA D.EXHIBIT INCLUDED.A question about the priority of a Stackwise switch. We have to configure shutdown and no shutdown.) A. Have to use errdisable recovery C. allowed all vlans except 100. NA Answer: AB 315.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-99. provides backup for fiber B. (Choose two.When no spanning-tree bpdu guard enable is configured in f0/7. NA Answer: A 314.2 and uses UDP port 1985 B. The command spanning-tree mode IEEE was implemented.) A. (CONCEPT ONLY) A. The safer .A question about port number and multicast address of HSRP. NA D. removes loops D.0. The spanning-tree mode is IEEE. HSRP uses multicast address 224. B. Master member is selected based on member's priority B. (CONCEPT ONLY) A. na 111 / 121 . C. Protocol used was IEEE. na Answer: A 316. which is against what is required in the question 312. B. na D.0. which is true? (There’s an exhibit that shows f0/7 receive BPDU.What is the benefit of UDLD? A.

  C.Behavior of an access port when a tagged packet is received other than the access VLAN value.0.0. na C. 1 . packet is dropped Answer: D 321. na D. GLBP uses multicast address 224. na Answer: A 318. A. http://bbs.A question about the port number and multicast address of VRRP. na Answer: A 320.18 and uses UDP port 112. B. The safer . na D. (CONCEPT ONLY) A. (CONCEPT ONLY) A.com D. na Answer: A 319.A question about the port number and multicast address of GLBP. na C. na D.only one can be elected on a switch. (CONCEPT ONLY) A. B. na D. easier way to help you pass any IT exams.0. B. B. VRRP uses multicast address 224. na C.hh010.A question about the number of Active Virtual Gateways (AVG) that can be used.0.102 with UDP port 3222. tag is removed and packet is forwarded on the VLAN of the access port C.Refer to the exhibit 112 / 121 . Tag is removed and packet is forwarded of the VLAN mentioned in the tag. na Answer: A 317.

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

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

C. 1518 bytes
D. 1522 bytes
Answer: B

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

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

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

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

114 / 121

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

D. BPDU bridge
Answer: A

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

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

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

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

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

115 / 121

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E. active-desirable
Answer: CD

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

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

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

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

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

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

116 / 121

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

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

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

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

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