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Exam : 300-115

Title : Implementing Cisco IP
Switched Networks

Version : V18.02

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

1.What is the maximum number of switches that can be stacked using Cisco StackWise?
A. 4
B. 5
C. 8
D. 9
E. 10
F. 13
Answer: D
Explanation:
Up to 9 Cisco Catalyst switches can be stacked together to build single logical StackWise switch since
Cisco IOS XE Release 3.3.0SE. Prior to Cisco IOS XE Release3.3.0SE, up to 4 Cisco Catalyst switches
could be stacked together. Reference:
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series- switches/
qa_c67-722110.html

2.A network engineer wants to add a new switch to an existing switch stack.
Which configuration must be added to the new switch before it can be added to the switch stack?
A. No configuration must be added.
B. stack ID
C. IP address
D. VLAN information
E. VTP information
Answer: A

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

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

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

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

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

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

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

What should be configured for extended VLANs? A. Switch A. Answer: A Explanation: VTP transparent switches do not participate in VTP. Switch B is configured in transparent mode.Refer to the exhibit.cisco. C. Reference: http://www. Switch C receives VLAN information from the VTP server Switch A. Switch B is configured with an access port to Switch A. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use. easier way to help you pass any IT exams.cisco. B. the VLANs in the range 1006 to 4094 are removed from VTP control. Reference: http://www. The safer . The VTP revision number of the Switch B is higher than that of Switch A. D.shtml 9 / 121 . Answer: B Explanation: VTP version 1 and VTP version 2 do not propagate configuration information for extended. which supports extended VLAN propagation. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2. Ensure that all switches run the same Cisco IOS version.  13. The trunk between Switch A and Switch B is misconfigured. VTP authentication is required when using extended VLANs because of their ability to cause network instability. C. You must configure extended-range VLANs manually on each network device. while Switch C is configured with a trunk port to Switch B.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.com/en/US/docs/switches/lan/ catalyst6500/ios/15. What is the most probable cause of this behavior? A. the extended VLANs are not being propagated to other VTP switches.pdf 14.After implementing VTP. VTP does not support extended VLANs and should be manually added to all switches. D.range VLANs (VLAN numbers 1006 to 4094). but Switch B does not receive any VLAN information. B. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements. B. Enable VTP version 3.1SY/config_guide/sup2T/vtp . VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094). If you convert from VTP version 3 to VTP version 2. and C are trunked together and have been properly configured for VTP.

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

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

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

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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

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

Refer to the exhibit. Switches send and receive spanning-tree frames. Reference: http://www. switch priority. Spanning tree uses this information to elect the root switch and root port for the switched network and the root port and designated port for each switched segment. The mode applies to all EtherChannels that are configured on the switch.cisco.html 30. Reference: http://www. root guard Answer: AB Explanation: Spanning tree forces redundant data paths into a standby (blocked) state.com/c/en/us/support/docs/lan-switching/etherchannel/120234. The safer . BPDUs contain information about the sending switch and its ports. Upgrade the PFC to support the latest load balancing methods. port-priority B. and path cost. D. including switch and MAC addresses. at regular intervals. When two ports on a switch are part of a loop. C. If a network segment in the spanning tree fails and a redundant path exists. 17 / 121 . EtherChannel load balancing can use MAC addresses or IP addresses.) A. or both source and destination addresses.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/ release/12.2_55_se/configuration/guide/3750xscg/swstp. Which action must be done to apply a new load balancing method? A. port priority. 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. 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. The switches do not forward these frames but use them to construct a loop-free path. Ensure that IP CEF is enabled globally to support all load balancing methods. forward-timers D. The path cost value represents the media speed. the spanning-tree algorithm recalculates the spanning-tree topology and activates the standby path.A network engineer must set the load balance method on an existing port channel. You configure the load balancing and forwarding method with use of the port-channel load-balance {dst-ip | dst-mac | src-dst-ip | src-dst-mac | src-ip | src-mac} global configuration command. source or destination addresses. called bridge protocol data units (BPDUs). link type E. Configure the new load balancing method using port-channel load-balance. Adjust the switch SDM back to "default". 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.html 31. easier way to help you pass any IT exams.  Which two elements are used to accomplish this? (Choose two. B.

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

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

D. When you enter the secret keyword. Reload the VTP server. Reload the new switch. it takes up to 4 hours propagate. C. E. 37.cisco. you cannot convert from VTP version 3 to version 1 or 2. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command. Reference: http://www. the network engineer notices that the new switch is not receiving the list of VLANs from the server. The first thing that should be done is to verify that the trunk ports are connected and up. B. The safer . Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? 20 / 121 . easier way to help you pass any IT exams. After verifying all VTP settings. Answer: B Explanation: VTP version 3 supports these features that are not supported in version 1 or version 2: Enhanced authentication--You can configure the authentication as hidden or secret. Support for extended range VLAN (VLANs 1006 to 4094) database propagation. Which action resolves this problem? A. the key associated with the password is saved in hexadecimal format in the running configuration. D. The VTP version number must be set to version 3. Reference: https://learningnetwork.PDF 36.1Q or ISL trunking encapsulation. a network engineer notices that none of the VTP clients are receiving the updates.cisco. but it does not appear in plain text in the configuration. Answer: D Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. B. Restart the VTP process on the new switch. Verify connected trunk ports. If extended VLANs are configured. VTP must be stopped and restarted on the server. The VTP server must be reloaded. VTP versions 1 and 2 propagate only VLANs 1 to 1005. Instead.57313/ Dynamic%20Trunking%20Protocol. Another switch in the domain has a higher revision number than the server.com/servlet/JiveServlet/previewBody/14792-102-1.After configuring new data VLANs 1020 through 1030 on the VTP server.html#wp1316856 38. you can directly configure the password secret key. C. the secret key from the password string is saved in the VLAN database file. When hidden.com/en/US/docs/switches/lan/catalyst3560/software/ release/12.A network is running VTPv2.2_52_se/config uration/guide/swvtp. You must reenter the password if you enter a takeover command in the domain. What is the problem? A. After each update to the VTP server.  Explanation: Switches such as the Catalyst 3550 that are capable of either 802.A network engineer is extending a LAN segment between two geographically separated data centers.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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1q frame? A. easier way to help you pass any IT exams. 0 B.What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? A. 66. html 64. All other values may be used as VLAN identifiers.wikipedia.What is the size of the VLAN field inside an 802. If more than one VLAN is needed.org/wiki/IEEE_802. The safer .  http://www.094 VLANs Reference: http://en. 16-bit D.Refer to the exhibit. the port should be configured as a trunk port. 32-bit Answer: B Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. 2 D. allowing up to 4. The hexadecimal values of 0x000 and 0xFFF are reserved. Which option shows the expected result if a show vlan command is issued? A) 32 / 121 . 1024 Answer: B Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN. 1 C. 8-bit B.1Q 65.2SX/configuration/guide/vtp.com/en/US/docs/switches/lan/catalyst6500/ios/12. 12-bit C.cisco.

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

easier way to help you pass any IT exams. spanning tree D.1q header found? A. the port will actually be used as a trunk.1Q 69. for Ethernet frames. Obviously.Which feature is automatically enabled when a voice VLAN is configured.In which portion of the frame is the 802.wikipedia. ignoring the switchport access VLAN 10 command. portfast B. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. Instead. The safer . The Port Fast feature is automatically enabled when voice VLAN is configured. it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en. Exhibit C D. storm control Answer: A Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports. but not automatically disabled when a voice VLAN is removed? A.com/en/US/docs/switches/lan/catalyst2950/software/ release/12. When you disable voice VLAN.org/wiki/IEEE_802. within the Ethernet FCS D. within the Ethernet header B. 67.1_22_ea11x/co nfiguration/guide/swvoip.1Q does not encapsulate the original frame. the Port Fast feature is not automatically disabled.  C. Reference: http://www. the port has been configured both as a trunk and as a switchport in data vlan 10. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). a port can not be both.1Q tag in an Ethernet frame 802.Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a 34 / 121 .html 68. port-security C. within the Ethernet source MAC address Answer: A Explanation: Insertion of 802. Exhibit D Answer: A Explanation: In this case. within the Ethernet payload C.cisco. so even though Cisco IOS will accept both.

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

easier way to help you pass any IT exams. D.Refer to the exhibit. Enable the company B switch with the vtp mode server command.dat and ensure that the switch with lowest MAC address is the VTP server. The network switches for two companies have been connected and manually configured for the required VLANs. The safer . 73. but users in company A are not able to access network resources in company B when DTP is enabled. Manually force trunking with switchport mode trunk on both switches. Which action resolves this problem? A. Delete vlan.A network engineer must implement Ethernet links that are capable of transporting frames and IP 36 / 121 . C.  trunking to pass this new VLAN along to the other switches. Answer: C Explanation: Since the number of existing VLANs differ on the switches (9 on A and 42 on B) we know that there is a problem with VTP or the trunking interfaces. The 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. The VTP domain names do match and they are both VTP servers so there are no issues there. 72. B. Disable DTP and document the VTP domain mismatch.

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

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

The valid range is from 1 to 65535. LACP traffic goes through G0/4 because it is the highest interface ID. and on-on allow the formation of a channel. G0/2.A network engineer configured a fault-tolerance link on Gigabit Ethernet links G0/1. the other two bytes for tag control information (TCI). desirable-desirable. 8-bytes except the native VLAN C. desirable.1Q trunking. The higher the number.html#wp1081491 81.1_13_ea1/confi guration/ guide/swtunnel. D. desirable. Reference: http://www. How many bytes are added to each frame as a result of the configuration? A. Only the combinations auto-desirable. PAgP modes are active. PAgP modes are off. Answer: B Explanation: A LACP port priority is configured on each port using LACP. 8-bytes including native VLAN Answer: A Explanation: In 802. and on. Configure LACP port-priority on G0/1 to 65535. desirable. C. C. and on.Refer to the exhibit. and on-on allow the formation of a channel. B. and on-on allow the formation of a channel. Which action allows interface G0/1 to always actively forward traffic in the port-channel? A. and G0/4 between two switches using Ethernet port-channel.cisco. 39 / 121 . The safer .  system MTU size to at least 1504 bytes. desirable-desirable. The default is 32768.com/c/en/us/td/docs/ios/12_2sb/feature/guide/gigeth. easier way to help you pass any IT exams. Only the combinations active-desirable. Configure G0/1 as half duplex and G0/2 as full duplex. Two bytes are used for the tag protocol identifier (TPID). all VLAN packets are tagged on the trunk link. and on. LACP uses the port priority with the port number to form the port identifier.html 79. except the native VLAN. 4-bytes including native VLAN D. the lower the priority. desirable. Configure LACP port-priority on G0/1 to 1. Only the combinations active-active. auto. B. 80. 4-bytes except the native VLAN B. 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.Which statement about the use of PAgP link aggregation on a Cisco switch that is running Cisco IOS Software is true? A. G0/3. The port priority can be configured automatically or through the CLI.desirable. http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12. PAgP modes are active. A VLAN tag adds 4 bytes to the frame.

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

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

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

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

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

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

Reference: http://www. it has the lowest priority value for VLAN 1. Reference: http://www. Answer: D Explanation: For priority. the more likely the switch will be chosen as the root switch.19 and all ports are forwarding.  cost represents higher-speed transmission and is preferred. The switch priority for VLAN 1 and the macro specifies "This Bridge is the root".com/ en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/config uration/guide/ swstp. Why would the switch be considered as a root bridge? A.html#wp1020666 91.1_9_ea1/config uration/ guide/swstp. The bridge priority is 1 and all ports are forwarding. The safer . B. the default is 32768. The switch priority value is zero. the range is 0 to 61440 in increments of 4096. easier way to help you pass any IT exams.cisco.html#wp1105354 90. C. D.com/en/US/docs/switches/lan/catalyst2950/software/release/12.cisco. The lower the number. 46 / 121 .Refer to the exhibit. The bridge priority is 128.Refer to the exhibit.

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

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

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

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

you could get a log of when users logged in and when they logged out. 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. authorization B. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable.com/en/US/docs/switches/lan/catalyst6500/ios/12.Which portion of AAA looks at what a user has access to? A. Which solution ensures that the server maintains network reachability in the future? A. The safer . C. For more protection against malicious attacks.Which command creates a login authentication method named "login" that will primarily use RADIUS and fail over to the local user database? A. 102. Trust the interface that is connected to the server with the ip dhcp snooping trust command. B. The feature is not active until you complete this step.  5. (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. For example. In the Cisco IOS. with accounting.com/blog/data-center/what-is-aaa-and-how-do-you- configure-it-in-thecisco-ios/ 101. It provides a way of collecting security information that you can use for billing.techrepublic. easier way to help you pass any IT exams. Reference: http://www. authorization looks at what that authenticated user has access to do.html#wp1090479 100.2SX/configuration/guide/sno odhcp.cisco. It also lists radius first then local. (config)# aaa authentication login login radius local C. which would be specific to the individual user rights. Authorization: After initial authentication. Enable DHCP snooping globally. it can also support encryption. RADIUS or TACACS+ security servers perform authorization for specific privileges by defining attribute-value (AV) pairs. authentication C. Configure a static DHCP snooping binding entry on the switch. Reference: http://www. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. You can use accounting to see what users do once they are authenticated and authorized. (config)# aaa authentication login default radius local B.A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping. auditing. accounting D. (config)# aaa authentication login default local radius D. you can define AAA authorization with a named list or authorization method. Disable DHCP snooping information option. Accounting: The last "A" is for accounting. and reporting. 51 / 121 . Depending on your security options.

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

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

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

switch(config)# errdisable recovery cause security-violation Answer: B Explanation: When a secure port is in the error-disabled state. switch# show ip arp inspection E. switch# show ip verify source D. switch# show port-security C. 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 ------------------. storm control B. switch# show mac address-table address <mac address> Answer: AE Explanation: These two commands will show the MAC address table.  Which command accomplishes this task? A. switch(config)# errdisable recovery interval 180 B.) A.pdf 109. If a port is in per-VLAN errdisable mode. easier way to help you pass any IT exams. Which option decreases consumption of bandwidth used by broadcast traffic? A.1545 Dynamic 2 FastEthernet0/5 110.-------------------0010.cisco. including the switch port that the particular host is using. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces.7b00. switch(config)# switchport port-security protect D. You can also customize the time to recover from the specified error disable cause (default is 300 seconds) by entering the errdisable recovery interval interval command. switch# show mac address-table B. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port. switch(config)# switchport port-security aging type inactivity E. This is the default mode. 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.0de0.The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. The safer . SDM routing C.e289 Dynamic 1 FastEthernet0/1 0010.7b00.com/c/en/us/td/docs/switches/ lan/catalyst4500/12- 2/53SG/configuration/config/port_sec.1540 Dynamic 2 FastEthernet0/5 0010. Which two commands help trace this PC when the MAC address is known? (Choose two. integrated routing and bridging 55 / 121 . Cisco IOS parser D.While troubleshooting a network outage. Reference: http://www. switch(config)# errdisable recovery cause psecure-violation C.-----------.---.

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

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

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

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

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

cisco. You can enable this feature when 802.When IP Source Guard with source IP filtering is enabled on an interface.Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. this error message appears: Static IP source binding can only be configured on switch port. dynamic ARP database C. static ARP database Answer: A Explanation: Information About Dynamic ARP Inspection DAI is used to validate ARP requests and responses as follows: Intercepts all ARP requests and responses on untrusted ports.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_01110.1x port-based authentication is enabled. the source IP address filter is applied on all the VLANs. This database is built by DHCP snooping when it is enabled on the VLANs and on the device. Drops invalid ARP packets. Reference: http://www. DHCP snooping database B.html 122. DHCP snooping B. easier way to help you pass any IT exams. which feature must be enabled on the access VLAN for that interface? A. When IP source guard with source IP filtering is enabled on an interface. storm control C.  121. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database.cisco. Reference: http:// www.Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or 61 / 121 . Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet. spanning-tree portfast D. dynamic routing database D. If you enter the ip source binding mac- address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface. DHCP snooping must be enabled on the access VLAN for that interface. private VLAN Answer: A Explanation: IP Source Guard Configuration Guidelines You can configure static IP bindings only on nonrouted ports.html 123. The safer . 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.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.

· Use the error disable detection and recov-ery feature. It allows port security to secure the IP address that 802. router(config-if)#storm-control action enable Answer: A Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface. router(config-if)#storm-control action shutdown B.com/c/en/us/td/docs/ routers/7600/ios/122SR/configuration/guide/swcg/do s.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. port security C.2SX/configuration/ guide/book/storm. Which option describes what this configuration allows? A.1X on the same interfaces. easier way to help you pass any IT exams. perform this task: Command Purpose Step 1 Router (config)# interface {{type1 Selects an interface to configure.  broadcast traffic? A. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack. Answer: A Explanation: 802. which creates excessive traffic and degrades network performance.pdf 124.1X is already preventing inbound 62 / 121 . multicast. The safer .storm is detected? A. Port security secures the MAC addresses that 802. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. VTP pruning D.1X and Port Security You can configure port security and 802. C.html 125.cisco.1X authenticates. · Enter the no storm-control action shut-down command to revert to the default action (drop).1x authenticates. B. router(config-if)#storm-control action error D.1X processes packets before port security processes them.1x to secure the MAC address that port security authenticates.1x to secure the IP address that port security authenticates.1x authenticates. D. It allows 802. or the shutdown and no shut-down commands to reenable ports. It allows port security to secure the MAC address that 802. so when you enable both on an interface.A network engineer configures port security and 802.Which command would a network engineer apply to error-disable a switchport when a packet. It allows 802. 802. slot/port} | {port-channel num-ber}} Step 2 Router (config-if)# storm-control (Optional) Configures traffic storm control to action shutdown error-disable ports when a traffic storm occurs.1x on the same interface. storm control B. Reference: http://www. Reference: http://3c3cc. VLAN trunking Answer: A Explanation: A traffic storm occurs when packets flood the LAN. 802. router(config-if)#storm-control action trap C.

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

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

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

(generally through through ARP DHCP) DHCP) requesting a unique virtual gateway.wordpress. one with highest pri. 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)..(generally through ing.0.  D. -Round-Robin algorithm (de-fault).102-udp 1985 (version2) Advertisement 1 Hello 3 sec-Hello 3 seconds second onds (Master Down Inter-Timers val)3 * Advertisement (Hold) 10 sec- + skew time (Hold) 10 seconds onds (Skew time)(256-pri-ority) / 256 Load-balancing oriented-Weighted algo- -Multiple HSRP .1 standby router. the . The safer .address..18 IP 112 224. 15 Answer: C Explanation: The standby track interface configuration command ties the router hot standby priority to the availability of its interfaces and is useful for tracking interfaces that are not configured for HSRP.0. When a tracked 66 / 121 .0.com/2008/08/23/router-highavailability-protocol- comparison-2/ 134.. routers. 5 C. easier way to help you pass any IT exams.What is the default amount by which the hot standby priority for the router is decremented or incremented when the interface goes down or comes back up? A.0.group per in-pendent algo-terface/SVI/routed terface/SVI/routed rithm.Use virtual ip dress.optimal loadbalanc-algorithm ing. 10 D. 1 B.up to 4 AVF routers on the 1 active router.0. Cisco propri-Scope Cisco proprietary IEEE standard etary Active Virtual Active Router: Master Router: (*) Gateway: 1-Highest Priority 1-Highest Priority 1-Highest Pri-Election 2-Highest IP 2-Highest IP ority (tiebreaker) (tiebreaker) 2-Highest IP (tiebreaker) Tracking yes yes yes Optimization Preempt yes yes yes features Timer ad-yes yes yes justments Traffic type 224.0.. 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.0.Host-de-group per in. ority become master.up to Router role 1024 virtual routers (GLBP groups) per physical inter-face. traffic.1 or Virtual For-or more backup more listening warder) passing routers.102 udp (version1) 3222 224. int.Multiple VRRP rithm.0.ip address.2 udp 1985 224.. if not. int.. -Can use real router -Use virtual ip ad.1 group (Active -1 master router. Reference: http://cciethebeginning.

These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address. A virtual forwarder that is assigned a virtual MAC address by the AVG is known as a primary virtual forwarder. Reference: http://www. Gateways are assigned the next MAC address in sequence. active virtual gateway D. Other members of the GLBP group learn the virtual MAC addresses from hello messages. A virtual forwarder that has learned the virtual MAC address is referred to as a secondary virtual forwarder. 8 Answer: B Explanation: GLBP Virtual MAC Address Assignment A GLBP group allows up to four virtual MAC addresses per group. The AVG assigns a virtual MAC address to each member of the GLBP group. For each interface configured for hot standby. active virtual forwarder B. The AVG is responsible for assigning the virtual MAC addresses to each member of the group. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address.What is the maximum number of virtual MAC addresses that GLBP allows per group? A.com/en/US/docs/switches/lan/catalyst3550/software/ release/12. 2 B. Other group members request a virtual MAC address after they discover the AVG through hello messages. its state changes do not affect the hot standby priority of the configured device.html 137.1_19_ea1/confi guration/guide/swhsrp.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1039651 136.  interface fails. 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. the hot standby priority on the device on which tracking has been configured decreases by 10.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html 135. active virtual router C. virtual router master B.Which VRRP router is responsible for forwarding packets that are sent to the IP addresses of the virtual router? A. The safer .Which gateway role is responsible for answering ARP requests for the virtual IP address in GLBP? A. Reference: http://www. 4 C. easier way to help you pass any IT exams.cisco. If an interface is not tracked. 6 D.cisco.cisco. Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses. Reference: http://www. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. virtual router backup 67 / 121 . you can configure a separate list of interfaces to be tracked.

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

no spanning-tree link-type shared Answer: C 142. issue the show interface command to verify the MAC address of the interface. In order to resolve this issue. then it indicates that this router is receiving its own hello packets sent.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520. The safer . spanning-tree bpduguard default C.0.0.255. Incorrect GLBP IP address C. When configuring the multicast boundary command. permit the Multicast address by permit 224.0 15. easier way to help you pass any IT exams.255. HSRP configured on same interface as GLBP D. Which command can prevent BPDU transmission on this port? A.102 and User Datagram Protocol (UDP) port 3222 (source and destination). Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.  Which option describes the reason for this message in a GLBP configuration? A.cisco. LACP port priority 69 / 121 . Reference: http://www.255. spanning-tree portfast bpdufilter default D.Refer to the exhibit. Layer 2 loop Answer: D Explanation: This section provides information you can use to troubleshoot your configuration. If the MAC address of the interface is the same as the one reported in the error message. spanning-tree portfast bpduguard enable B. then some other device with a MAC address reports this error message. LACP system priority B. Verify the spanning-tree topology and check if there is any layer2 loop.0.) A. a network analyzer is connected to Port f0/1 of a LAN switch. Unavailable GLBP active forwarder B.shtml#dr 141.0. If the interface MAC address is different from the one reported in the error message. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues. When troubleshooting a network problem.Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four.

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

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

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

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

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

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

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

learning Answer: A 168.10.1. Answer: CD 169. VRRP is a Cisco proprietary protocol. and many listening routers.Which two statements about HSRP. and VRRP are true? (Choose two. HSRP misconfiguration C. Layer 1 B. HSRP supports up to 255 groups on the same switch or router.By default.1 D.  A. The safer . GLBP allows for a maximum of four MAC addresses per group. E.Refer to the exhibit.Refer to the exhibit. 77 / 121 . spanning-tree loop B. VRRP has one master router. what is the state of port security on a switch? A. off D. Layer 3 D. a hardware problem Answer: B 170. GLBP. HSRP is the preferred protocol to be used on multivendor environments. one standby router. Layer 2 C. Which option is the most likely explanation of the duplicate address message logged? A. on C. C. a PC with IP of 10. disabled B. D. easier way to help you pass any IT exams.) A. B. Layer 7 Answer: B 167.

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

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

easier way to help you pass any IT exams. shut down Answer: AE 178.0c07.Which two options are advantages of deploying VTPv3? (Choose two. A standby HSRP router becomes active if it has a higher priority than the priority of the current active router E. It can be configured to allow only one VTP server to make changes to the VTP domain Answer: CE 179. Trap B. C. the priority of an HSRP router is 200. Answer: AE 177.) A. log E.0. redirect traffic D. and VRRP is true? A.102. It supports the propagation of private VLANs. 80 / 121 . MAC address 0000.) A.Which statement about HSRP. It adds an FCS field at the end of each VTP frame for consistency checking C. B. It is a trunk port and the natrve VL AN m VLAN 700 D. B. It stores the VTP domain password securely as a SHA-1 hash. It is an access port in VLAN 700 Answer: B 176.  A.If StormControl is enabled on a port and the traffic reachesthe configured level.acOc indicates that default gateway redundancy is provided through GLBP. A backup GLBP active virtual gateway can become active only if the current active virtual gateway fails. D. VRRP group members communicate using multicast address 224.) A. It is a trunk port and the native VLAN is VLAN1 C. D. Preemption is enabled by default. It is an access port configured for a phone and a PC B. It supports the use of AES to encrypt VTP messaging. B. notify admin C. GLBP.Which two statements about default FHRP behavior are true? (Choose two. A VRRP backup virtual router becomes the master router if its priority is higher than the priority of the current master router. Unless specifically Configured.0. E. The safer . which two actions can be configured to occur? (Choose two.

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

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

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

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

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

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

If either an edge port or a nonedge port move to a block state. The priority of the router with IP address 172. Enable VTP pruning on a VTP server in the management domain. Any change in the state of the port generates a TC BDPU B.16. bypasses Answer: ACE 204.  C. which three statements about HSRP are true? (Choose Three) A. logs B.112 has nonpreempt configured 87 / 121 . The IP address 172.11.16.Which three functions dose Dynamic ARP Inspection perform with invalid IP-to MAC address bindings? (Choose three) A.16. Enable VTP pruning on any switch in the management domain D.16. discads F. Any loss of connectivity generates a TC BDPU Answer: B 205.11. The switchport command is missing from the configuration Answer: A 203.16.11.111 D.11. The final active router is the router with IP address 172. Answer: D 206. then a TC BDPU is generated D.Which statement is true about RSTP topology changes? A.112 is preferred over the router with IP address 172. The router with IP address 172.111 has preempt configured C.115 is the virtual HSRP IP address E. Only nonedge ports moving to the forwarding state generate a TC BDPU C. Enable VTP pruning on any client switch in the domain.16.111 B. intercepts D.Refer to the exhibit. Only edge ports moving to the blocking state generate a TC BPDU E. B.11. The router with IP address 172.11. The safer . Enable VTP pruning on every switch in the domain. C. easier way to help you pass any IT exams. The other side of the interface is set as access D. accepts E.What action should a network admin take to enable VTP pruning on an entire management domain? A. Based on the debug output. deletes C.

C. Routing should not be performed between VLANs located on separate switches D. STP D. PAgP Answer: A 211. An engineer is configuring an etherchannel between two switches. they are ignored and none are sent. Vlans should be local to a Switch E. LACP B.Refer to the exhibit. The safer . then PortFast is disabled and the BPDUs are processed normally. The router with IP address 172.When using EtherChannel misconfiguration guard. If BPDUs are received by a port configured for PortFast. Routing should occur at the access layer if voice VLANs is utilized. Routing may be performed at all layers but is most commonly done at the core and distribution layers C. port security C. based on the output what is the problem A. Otherwise. B. The command enables BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level Answer: A 209. easier way to help you pass any IT exams. the port transitions to the forwarding state. the etherchannel interface of switch 1 is not configured C. he notices the error message on Switch 2 (error message channel-missconfiguring error).  F.16. B. which technology is used to prevent this type of misconfiguration from affecting the network? A. Answer: ABD 207.112 is using default HSRP priority.11. 88 / 121 . the etherchannel protocol on switch 1 is not correct D. routing should occur at the distributionlayer. the etherchannel interface of switch 2 is not configured Answer: C 210.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. If BPDUs are received by a port configured for PortFast.What is the effect of configuring the following command on a switch? Switch(config)# spanning-tree portfast bdpufilter default A. D. If BPDUs are received by a port configured for PortFast. the etherchannel on the switch 1 using incorrect member port B. Vlans should ne localized to a single switch unless voice VLANs are being utilized Answer: BD 208.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The active router number Answer: E 280.10. Switch_B(config-if)#ip address 10.10.2 255.255.10. To assign the HSRP router priority in a standby group. C.10.2 255.255.HSRP has been configured between two Company devices.255.10.10.10.2 255.255.10 C. The HSRP router number D.255.0 Switch_B(config-if)#standby 1 priority 190 104 / 121 .10 D.2 255. the standby group-number priority priority-value global configuration command must be used.  C.255.10.10. easier way to help you pass any IT exams. Which of the following describe reasons for deploying HSRP? (Choose three) A.10 Switch_B(config-if)#standby 1 track interface fa 1/1 B.10. The default priority of a router is zero (0).Refer to the exhibit.0 Switch_B(config-if)#standby 1 priority 195 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10. The HSRP group number F. the router with the highest configured IP address will become the active router Answer: CE 282. The safer . The no standby priority command assigns a priority of 100 to the router D. Switch_B(config-if)#ip address 10. B. When two routers in an HSRP standby group are configured with identical priorities. Switch_B(config-if)#ip address 10.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 preempt Switch_B(config-if)#standby 1 ip 10.10.10.255.0 Switch_B(config-if)#standby 1 priority 200 Switch_B(config-if)#standby 1 ip 10. the router with the lowest priority in an HSRP group would become the active router E. HSRP allows one router to automatically assume the function of the second router if the second router fails C. The VRRP group number E. HSRP provides redundancy and fault tolerance B.255.10. Assuming that preempting has also been configured. HSRP allows one router to automatically assume the function of the second router if the second router starts D. 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. HSRP provides redundancy and load balancing Answer: ABD 281.10.Which two statements about the HSRP priority are true? A. Switch_B(config-if)#ip address 10.

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

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

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

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

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

Source MAC B.) A. NA Answer: AB Explanation: A & B are right 1.Where should the Root Guard be implemented in the network topology that Cisco recommends? (Choose two.) A. All non-root ports of the Access Switches.EXHIBIT . spanning-tree mst 1 priority 1 F. Destination MAC Answer: A 309. switchport trunk allowed vlan 1-80.switchport trunk allowed vlan 1. Downstream links from Distribution to Access Switches C. easier way to help you pass any IT exams.101-250 C. On Layer 3 Switches.80. 80. Answer: AB 310. switchport trunk allowed vlan remove vlan 100 B. switchport trunk allowed vlan except vlan 100 D. B. Source-dest MAC C.) A.after applying the question command: switchport trunk allowed vlan 1. spanning-tree mst 1 priority 4096 E.99-250 Which two commands will remove VLAN 100 from the allowed VLAN list? (Choose two. The safer . Access Switches to uplink ports to Distribution Switches D. spanning-tree mstp vlan 10. Which two commands ensure that DSW1 becomes the root bridge for VLAN 10 and 20? (Choose two. 20 root primary Answer: BD 311.80. 99-250 Switch(config)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802.  A. Destination IP D.99-250 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 1 now after applying “except 100”: Switch(config-if)#switchport trunk allowed vlan except 100 110 / 121 . 99.Refer to the exhibit.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1. spanning-tree mstp 1 priority 0 B. spanning-tree mst 1 root primary C. 20 priority root D. spanning-tree mst vlan 10.

(Choose two.A question about the priority of a Stackwise switch. help in preventing loops C. (CONCEPT ONLY) A. B. Have to use errdisable recovery C. The spanning-tree mode is IEEE. allowed all vlans except 100. Master member is selected based on member's priority B.When no spanning-tree bpdu guard enable is configured in f0/7.2 and uses UDP port 1985 B.0. na C.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-99.) A. NA Answer: A 314. We have to configure shutdown and no shutdown. NA D. HSRP uses multicast address 224. which is against what is required in the question 312.) A. NA D.  Switch(config-if)#do show int trunk Port Mode Encapsulation Status Native vlan Fa0/1 on 802. provides backup for fiber B. The safer . na Answer: A 316.101-1005 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. determines switch path Answer: B 313.EXHIBIT INCLUDED. removes loops D.What is the benefit of UDLD? A. which is true? (There’s an exhibit that shows f0/7 receive BPDU. B. easier way to help you pass any IT exams. NA Answer: AB 315. C. na 111 / 121 . The command spanning-tree mode IEEE was implemented. (CONCEPT ONLY) A.0. An exhibit with spanning-tree.A question about port number and multicast address of HSRP. na D. Protocol used was IEEE.

na D. na C. tag is removed and packet is forwarded on the VLAN of the access port C. easier way to help you pass any IT exams.18 and uses UDP port 112. na D.A question about the port number and multicast address of GLBP.only one can be elected on a switch. B. The safer . na D. (CONCEPT ONLY) A.A question about the port number and multicast address of VRRP. Tag is removed and packet is forwarded of the VLAN mentioned in the tag.com D.102 with UDP port 3222. na Answer: A 319. 1 . na C. (CONCEPT ONLY) A.hh010.0.  C.Refer to the exhibit 112 / 121 . GLBP uses multicast address 224. A. http://bbs. na Answer: A 318.0. na Answer: A 317. B.0. na Answer: A 320.A question about the number of Active Virtual Gateways (AVG) that can be used. packet is dropped Answer: D 321. B. na D. VRRP uses multicast address 224. (CONCEPT ONLY) A.Behavior of an access port when a tagged packet is received other than the access VLAN value. na C.0. B.

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

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

C. 1518 bytes
D. 1522 bytes
Answer: B

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

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

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

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

114 / 121

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

D. BPDU bridge
Answer: A

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

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

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

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

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

115 / 121

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

E. active-desirable
Answer: CD

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

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

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

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

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

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

116 / 121

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

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

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

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

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