Actualtests 300-115

Number: 300-115
Passing Score: 800
Time Limit: 120 min
File Version: 16.5

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Exam code: 300-115
Exam name: Implementing Cisco IP Switched Networks

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Question Set 1
QUESTION 1
What is the maximum number of switches that can be stacked using Cisco StackWise?
A.
B.
C.
D.
E.
F.

4
5
8
9
10
13

Correct Answer: D
Section: [none]
Explanation
Explanation/Reference:
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
QUESTION 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.
B.
C.
D.
E.

No configuration must be added.
stack ID
IP address
VLAN information
VTP information

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
Explanation:
Switch Stack Offline Configuration

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You can use the offline configuration feature to provision (to supply a configuration to) a new switch before it joins the switch stack. You can configure in advance
the stack member number, the switch type, and the inter- faces associated with a switch that is not currently part of the stack. The configuration that you create on
the switch stack is called the provisioned configuration . The switch that is added to the switch stack and that re- ceives this configuration is called the provisioned
switch .
You manually create the provisioned configuration through the switch stack-member-number provision type global configuration command. The provisioned
configuration is automatically created when a switch is added to a switch stack and when no provisioned configuration exists.
When you configure the interfaces associated with a provisioned switch (for example, as part of a VLAN), the switch stack accepts the configuration, and the
information appears in the running configuration. The interface associated with the provisioned switch is not active, operates as if it is administratively shut down,
and the no shutdown interface configuration command does not return it to active service. The interface associated with the provisioned switch does not appear in
the display of the specific feature; for example, it does not appear in the show vlan user EXEC command output.
The switch stack retains the provisioned configuration in the running configuration whether or not the provi- sioned switch is part of the stack. You can save the
provisioned configuration to the startup configuration file by entering the copy running-config startup-config privileged EXEC command. The startup configuration file
ensures that the switch stack can reload and can use the saved information whether or not the provisioned switch is part of the switch stack.
Effects of Adding a Provisioned Switch to a Switch Stack
When you add a provisioned switch to the switch stack, the stack applies either the provisioned configuration or the default configuration. Table 5-1 lists the events
that occur when the switch stack compares the provisioned configuration with the provisioned switch.
Table 5-1 Results of Comparing the Provisioned Configuration with the Provisioned Switch
Scenario Result
The stack member num- 1. If the stack member number The switch stack applies bers and the switch types of the provisioned switch the provisioned configuramatch. matches the stack member num- tion to the provisioned ber in the provisioned configura- switch and adds it to the tion on the stack, and stack.
2. If the switch type of the provisioned switch matches the switch
type in the provisioned configuration on the stack.
The stack member num- 1. If the stack member number The switch stack applies bers match but the switch of the provisioned switch the default configuration to
types do not match. matches the stack member num- the provisioned switch and ber in the provisioned configuration on the stack, but adds it to the stack.
2. The switch type of the provi- The provisioned configura- sioned switch does not match the tion is changed to reflect switch type in the provisioned the new
information.
configuration on the stack.

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The stack member num- The switch stack applies
ber is not found in the pro- the default configuration to
visioned configuration. the provisioned switch and
adds it to the stack.
The provisioned configuration is changed to reflect
the new information.
The stack member num- The stack master assigns a new The switch stack applies ber of the provisioned stack member number to the pro- the provisioned
configura- switch is in conflict with an visioned switch. tion to the provisioned existing stack member. switch and adds it to the
The stack member numbers and
stack.
the switch types match:
The provisioned configura1. If the new stack member
tion is changed to reflect
number of the provisioned switch
the new information.
matches the stack member number in the provisioned configuration on the stack, and
2. If the switch type of the provisioned switch matches the switch
type in the provisioned configuration on the stack.
The stack member numbers The switch stack applies
match, but the switch types do the default configuration to not match: the provisioned switch and
adds it to the stack.
1. If the stack member number
of the provisioned switch The provisioned configuramatches the stack member num- tion is changed to reflect
ber in the provisioned configura- the new information.
tion on the stack, but
2. The switch type of the provisioned switch does not match the
switch type in the provisioned
configuration on the stack.

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Figure 3. B.html QUESTION 4 http://www. adds it to the stack. C.com/c/en/us/products/collateral/switches/catalyst-3750-series.The stack member num.cisco. This mechanism restores dual path flow when the timing mechanisms detect renewed activity on the cable.com/ . as shown in Figure 3. Cisco StackWise Technology Resilient Cabling Reference: http://www.exam.The switch stack applies ber of the provisioned the default configuration to switch is not found in the the provisioned switch and provisioned configuration.cisco.switches/prod_white_paper09186a00801b096a.2_55_se/configuration/guide/3750xscg/swstack. Reference: http://www. 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. D. 0 25 50 75 100 Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Physical Sequential Linkage The switches are physically connected sequentially.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12.html QUESTION 3 What percentage of bandwidth is reduced when a stack cable is broken? A. E.

com/ .Refer to the exhibit. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode passive C.exam. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto B. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto http://www. Which set of configurations will result in all ports on both switches successfully bundling into an EtherChannel? A.

This setting minimizes the transmission of LACP packets. trunking state and VLAN numbers.sponds to LACP packets that it receives. desirable Places an interface into an active negotiating state. in which the interface starts negotiations with other interfaces by sending PAgP packets. Interfaces can form an EtherChannel when they are in different PAgP modes as long as the modes are compatible.exam. Reference: http://www. but does not start LACP packet negotiation.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12. 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.com/ .sponds to PAgP packets it receives but does not start PAgP packet negotia. in which the interface re.D. for Layer 2 EtherChannels. For example: An interface in the desirable mode can form an EtherChannel with another interface that is in the desirable or auto mode. With the on mode. auto Places an interface into a passive negotiating state. An interface in the auto mode can form an EtherChannel with another interface in the desirable mode. passive Places an interface into a passive negotiating state. a usable EtherChannel exists only when an interface group in the on mode is connected to another interface group in the on mode. 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.html QUESTION 5 Refer to the exhibit. http://www. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: The different etherchannel modes are described in the table below: Mode Description active Places an interface into an active negotiating state.tion.1_13_ea1/configuration/guide/3550scg/swethchl. An interface in the auto mode cannot form an EtherChannel with another interface that is also in the auto mode because neither interface starts PAgP negotiation. in which the interface re. on Forces the interface into an EtherChannel without PAgP or LACP. This setting minimizes the transmission of PAgP packets.cisco. in which the interface starts negotiations with other interfaces by sending LACP packets.

http://www. C. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session. or to limit (filter) SPAN source traffic to specific VLANs.exam.com/ . Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10.exam. B. use the monitor session filter global configuration command. D. Change the monitor session source to VLAN 10 instead of the physical interface. Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10.com/ 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.http://www. Apply the monitor session filter globally to allow only traffic from VLAN 10.

F. you must enter a space before and after the hyphen ( -). | -] options. B. C. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack. all VLANs are monitored on trunk source ports. By default. VLAN monitoring and VLAN filtering are mutually exclusive. E. A monitor session on the distribution switch with a physical interface as the source and the remote SPAN VLAN as the destination A remote SPAN VLAN on the distribution and access layer switch A monitor session on the access switch with a physical interface source and the remote SPAN VLAN as the destination A monitor session on the distribution switch with a remote SPAN VLAN as the source and physical interface as the destination A monitor session on the access switch with a remote SPAN VLAN source and the physical interface as the destination A monitor session on the distribution switch with a physical interface as the source and a physical interface as the destination http://www.html#wp3 875419997 QUESTION 6 Refer to the exhibit.exam. you must enter a space before and after the comma. A network engineer wants to analyze all incoming and outgoing packets for an interface that is connected to an access switch. You select a series or range of VLANs by using the [ . D.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_m anagement/command_reference/b_nm_3se_3850_cr/ b_nm_3se_3850_cr_chapter_010. a VLAN cannot become a source.com/ . If a VLAN is a source. Which three items must be configured to mirror traffic to a packet sniffer that is connected to the distribution switch? (Choose three. Reference: http://www.cisco. If you specify a series of VLANs. VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports. 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. If you specify a range of VLANs.Usage Guidelines You can set a combined maximum of two local SPAN sessions and RSPAN source sessions.) A. VLAN filtering cannot be enabled. If VLAN filtering is configured. You can monitor traffic on a single VLAN or on a series or range of ports or VLANs.

while Switch B is configured with channel-group 1 mode desirable. Switch A is configured with channel-group 1 mode active. 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. The channel group identifier must be different for Switch A and Switch B.2_55_se/configuration/guide/3750xscg/swspan. Here is a summary of the various etherchannel modes: EtherChannel PAgP Modes Mode Description auto Places a port into a passive negotiating state. D.exam. RSPAN supports source ports. B. SPAN copies (or mirrors) traffic received or sent (or both) on source ports or source VLANs to a destination port for analysis. source VLANs. You can not mix the LACP and PAGP protocols to form an etherchannel. and destination ports on different switches (or different switch stacks). This setting http://www. enabling remote monitoring of multiple switches across your network. LACP priority must be configured on both switches.cisco. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Here we have a situation where one switch is using active mode.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12.Correct Answer: BCD Section: [none] Explanation Explanation/Reference: Explanation: You can analyze network traffic passing through ports or VLANs by using SPAN or RSPAN to send a copy 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. Each RSPAN source switch must have either ports or VLANs as RSPAN sources. The switch ports are not configured in trunking mode. which is a PAGP mode. interface port channel 1 is in the down/down state. which is an LACP mode. in which the port responds to PAgP packets it receives but does not start PAgP packet negotiation. The switches are using mismatched EtherChannel negotiation modes. Why is the EtherChannel bundle not working? A. and the other is using desirable. The traffic for each RSPAN session is carried over a user-specified RSPAN VLAN that is dedicated for that RSPAN session in all participating switches. The destination is always a physical port Reference: http://www.com/ . C.html QUESTION 7 After an EtherChannel is configured between two Cisco switches.

html http://www. This mode is not supported when the EtherChannel members are from differ. Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle. This setting minimizes the transmission of LACP packets.ent switches in the switch stack (cross-stack EtherChannel). desirable Places a port into an active negotiating state. For example.html QUESTION 8 An EtherChannel bundle has been established between a Cisco switch and a corporate web server.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. in which the port starts negotia. The mode you select applies to all EtherChannels that you configure on the switch. or both.2_55_se/configuration/guide/scg_2960/swethchl. What should be done on the Cisco switch to allow for better EtherChannel utilization to the corporate web server? A. use of the destination MAC address results in the choice of the same link in the channel each time. This mode is not supported when the EtherChannel members are from differ. E.tions with other ports by sending PAgP packets. C. The network administrator noticed that only one of the EtherChannel links is being utilized to reach the web server.minimizes the transmission of PAgP packets.tions with other ports by sending LACP packets.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12. Adjust the EtherChannel load-balancing method based on source IP addresses. Use the option that provides the greatest variety in your configuration. Adjust the EtherChannel load-balancing method based on destination IP addresses. IP addresses.exam. if the traffic on a channel only goes to a single MAC address (which is the case in this example. since all traffic is going to the same web server).cisco.ent switches in the switch stack (cross-stack EtherChannel).com/ .cisco. or Layer 4 port numbers. Reference: http://www. D. but does not start LACP packet negotiation. destination mode. Use of source addresses or IP addresses can result in a better load balance. Correct Answer: E Section: [none] Explanation Explanation/Reference: Explanation: EtherChannel load balancing can use MAC addresses. and either source mode. passive Places a port into a passive negotiating state in which the port responds to LACP packets that it receives. B. Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle. EtherChannel LACP Modes Mode Description active Places a port into an active negotiating state in which the port starts negotia. Reference: http://www.

Cisco Express Forwarding is enabled locally. The routers are connected via a Layer 2 switch. C.2/25ew/configuration/guide/conf/span. 9 Reference: http://www. IP routing is disabled on neighboring devices. Correct Answer: E Section: [none] Explanation Explanation/Reference: Explanation: The "monitor session filter" command is used to specify which VLANS are to be port mirrored using SPAN. All VLAN traffic is sent to the SPAN destination interface. 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 .cisco. B. 39.html/index. Cisco Discovery Protocol advertisements are inconsistent between the local and remote devices. but it has several routing neighbor relationships. B. E.html#wp1066836 QUESTION 10 A network engineer notices inconsistent Cisco Discovery Protocol neighbors according to the diagram that is provided. C. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs. Traffic from VLANs 1 to 8. Traffic from VLAN 4 is not sent to the SPAN destination interface.5 . then each router will only have the single switch port that it connects to as its neighbor.exam. D.8.com/c/en/us/td/docs/switches/lan/catalyst4500/12.QUESTION 9 Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: If all of the routers are connected to each other using a layer 2 switch. 39. The trunk's native VLAN must be changed to something other than VLAN 1. 52 What is the result of the implemented command? A. and 52 is replicated to the SPAN destination port. What would cause the output to show only the single neighbor? A.com/ . The engineer notices only a single neighbor that uses Cisco Discovery Protocol. Even http://www. This command is configured globally: monitor session 2 filter vlan 1 . D.

exam. VLANs are not passing from the VTP server (existing network) to the VTP clients. D. Remove the VTP domain name from all switches with "null" and then replace it with the new domain name. D. However. principally wired Ethernet. password. http://www. What must be done to fix this? http://www. Reference: http://en. C. Which vendor-neutral protocol could be used to resolve this issue? A. a network engineer notices that directly connected devices that use Cisco Discovery Protocol are not visible. and neighbors on an IEEE 802 local area network.com/ A.com/ . Local Area Mobility Link Layer Discovery Protocol NetFlow Directed Response Protocol Correct Answer: B Section: [none] Explanation Explanation/Reference: 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. such as the Cisco Discovery Protocol (CDP). QUESTION 11 After the implementation of several different types of switches from different vendors. C. capabilities. All of the new switches have been configured with the same VTP domain.though multiple routing neighbors can be formed over a layer 2 network. Provision one of the new switches to be the VTP server and duplicate information from the existing network.wikipedia. LLDP performs functions similar to several proprietary protocols. but not necessarily the logical topology. Configure a different native VLAN on all new switches that are configured as VTP clients. B. only the physical port that it connects to will be seen as a CDP neighbor.org/wiki/Link_Layer_Discovery_Protocol QUESTION 12 Several new switches have been added to the existing network as VTP clients. B.exam. Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred. and version. CDP can be used to determine the physical topology.

Reference: http://www.shtml QUESTION 13 After implementing VTP. Make sure that no password is set between the server and client. VTP authentication is required when using extended VLANs because of their ability to cause network instability.com/en/US/docs/switches/lan/catalyst6500/ios/15. If any password is set. B.Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: VTP allows switches to advertise VLAN information between other members of the same VTP domain.pdf QUESTION 14 http://www.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613. C.cisco. Make sure that the VLANs are active in all the devices. Extended VLANs will not propagate to different IOS versions when extended VLANs are in use. Make sure that if EtherChannels are created between two switches. VTP version 3 supports extended-range VLANs (VLAN numbers 1006 to 4094). Enable VTP version 3.1SY/config_guide/sup2T/vtp . Make sure that all ports that interconnect switches are configured as trunks and are actually trunking.exam. ·The VTP domain name must match and it is case sensitive. What should be configured for extended VLANs? A. VTP does not support extended VLANs and should be manually added to all switches. make sure that the password is the same on both sides. the VLANs in the range 1006 to 4094 are removed from VTP control.cisco. You must configure extended-range VLANs manually on each network device. If you convert from VTP version 3 to VTP version 2. only Layer 2 EtherChannels propagate VLAN information. Reference: http://www. the extended VLANs are not being propagated to other VTP switches. which supports extended VLAN propagation. D.range VLANs (VLAN numbers 1006 to 4094). CISCO and cisco are two different domain names. VTP allows a consistent view of the switched network across all switches. One of the switches must be the VTP server in a VTP domain.com/ . There are several reasons why the VLAN information can fail to be exchanged. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: VTP version 1 and VTP version 2 do not propagate configuration information for extended. Verify these items if switches that run VTP fail to exchange VLAN information: VTP information only passes through a trunk port. All VLAN changes must be done on this switch in order to have them propagated to the VTP clients. Ensure that all switches run the same Cisco IOS version.

while Switch C is configured with a trunk port to Switch B. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: VTP transparent switches do not participate in VTP. Switch B is configured with an access port to Switch A. Switch C receives VLAN information from the VTP server Switch A. Switch B is configured in transparent mode. Reference: http://www. C. and C are trunked together and have been properly configured for VTP.Refer to the exhibit. but Switch B does not receive any VLAN information. The VTP revision number of the Switch B is higher than that of Switch A. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements.shtml QUESTION 15 Refer to the exhibit. B. Switch A.exam. The trunk between Switch A and Switch B is misconfigured.cisco. B. D. http://www. but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.com/ . What is the most probable cause of this behavior? A.

B. http://www. D. The VTP revision number of Switch B is higher than that of Switch A. The trunk between Switch A and Switch B is misconfigured. The port roles have been adjusted based on the interface bandwidth and timers of the new Cisco Catalyst switches. multicast. and C are trunked together and have been properly configured for VTP. VTP pruning blocks unneeded flooded traffic to VLANs on trunk ports that are included in the pruningeligible list. The administrator has defined the switch as the root in the STP domain.1D STP. D.exam. the network engineer notices that the port roles that were once "blocking" are now defined as "alternate" and "backup. B. is that VTP pruning has been configured.1D STP and PortFast have been configured by default on all newly implemented Cisco Catalyst switches. C." What is the reason for this change? A.Switch A. B. A VTP authentication mismatch occurred between Switch A and Switch B. What would cause this issue? A. The best explanation for why switch C is not seeing traffic from only some of the VLANs. The new switches are using RSTP instead of legacy IEEE 802. but Switch C is not receiving traffic from certain VLANs. VTP pruning is configured globally on all switches and it removed VLANs from the trunk interface that is connected to Switch C. IEEE 802.com/ . a switch floods broadcast. VTP pruning is disabled by default. Correct Answer: C Section: [none] Explanation Explanation/Reference: 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. and unknown unicast traffic across all trunk links within a VTP domain even though receiving switches might discard them. Switch B has all VLANs. Without VTP pruning. QUESTION 16 After the recent upgrade of the switching infrastructure. C.

point links.protocol/24062-146. The backup port applies only when a single switch has two links to the same segment (collision domain). The switch does not have the processing power to ensure rapid transition for all ports. * Disabled port Not strictly part of STP. In switched networks today. not on trunk links. To have two links to the same collision domain.com/ . The alternative port moves to the forwarding state if there is a failure on the designated port for the segment.cisco.html QUESTION 17 An administrator recently configured all ports for rapid transition using PortFast. A port that operates in full-duplex is assumed to be point-to-point.exam.com/c/en/us/support/docs/lan-switching/ spanning-tree.com/c/en/us/support/docs/lan-switching/spanning-tree.Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: RSTP works by adding an alternative port and a backup port compared to STP. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: RSTP can only achieve rapid transition to the forwarding state on edge ports and on point-to. These ports are allowed to immediately enter the forwarding state rather than passively wait for the network to converge. This path is different than using the root port.html QUESTION 18 Which technique automatically limits VLAN traffic to only the switches that require it? http://www. The STP root bridge selection is forcing key ports to remain in non-rapid transitioning mode. The link type is automatically derived from the duplex mode of a port. a network administrator can manually disable a port Reference: http://www. Reference: http://www. This makes them candidates for rapid transition to the forwarding state. B. This automatic link type setting can be overridden by explicit configuration. 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.protocol/24062-146. while a half-duplex port is considered as a shared port by default. * Backup port A backup/redundant path to a segment where another bridge port already connects. D. After testing. the switch must be attached to a hub. STP is unable to achieve rapid transition for trunk links. it has been determined that several ports are not transitioning as they should.cisco. RSTP has been enabled per interface and not globally. C. most links operate in full-duplex mode and are treated as point-to-point links by RSTP. What is the reason for this? A.

By default.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. Correct Answer: A Section: [none] Explanation Explanation/Reference: 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. ARP requests will be processed less frequently by the switch. time seconds [vlan The range is from 0 to 1000000. perform this task: Command Purpose Step 1 switch# configure Enters configuration mode.A.Specifies the time before an entry ages out address-table aging. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes. To configure the aging time for all MAC addresses. multicast.cisco. E. unknown.table? A. B.exam. D. the default is vlan_id] 300 seconds. and flooded unicast packets to only the switches that require it.2SX/configuration/guide/book/vtp. This is how long a dynamic MAC address will remain in the CAM table. The MAC address-table will be flushed every 3 minutes. D.html#wp1020444 QUESTION 19 What effect does the mac address-table aging-time 180 command have on the MAC address. terminal Step 2 switch(config)# mac. The default timeout period will be 360 seconds. C.and is discarded from the MAC address table. VTP pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic must use to access the appropriate network devices. access lists DTP in nonegotiate VTP pruning PBR Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: VTP pruning enhances network bandwidth use by reducing unnecessary flooded traffic. C. such as broadcast. VTP pruning is disabled. Reference: http://www.com/ . Entering the value 0 disables the http://www. B.

Reference: http://packetlife. What is the root cause of this issue? A.exam.html#wp1126206 QUESTION 20 While working in the core network building. What solution allows the network switch to automatically recover from such an issue? A. UDLD failure. a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. The SDM VLAN template causes the MAC address-table to overflow. assess.com/ . this can be done by issuing shutdown followed by no shutdown on the interface. C. The SDM template is causing the CPU of the switch to spike during peak working hours. or a broadcast storm. We can configure the switch to automatically re-enable any error-disabled interfaces after a specified timeout period. If a VLAN is not specified. and a steady recurrence of these can amount to a huge time sink for the administrative staff. B. http://www.net/blog/2009/sep/14/errdisable-autorecovery/ QUESTION 21 A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. The VLAN receives additional frames from neighboring switches. the link did not recover.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/ CLIConfigurationGuide/MACAddress. the link was placed into a non-forwarding state due to a fault with UDLD.MAC aging. After the damaged cable was replaced. macros errdisable autorecovery IP Event Dampening command aliases Bidirectional Forwarding Detection Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: There are a number of events which can disable a link on a Catalyst switch. However. As designed. such as the detection of a loopback. By default. some configurations may be prone to accidental violations. E. B. manual intervention by an administrator is necessary to restore the interface to working order. This is where errdisable autorecovery can be of great assistance. 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. and (ideally) correct the issue. This gives the offending issue a chance to be cleared by the user (for example. D. by removing an unapproved device) without the need for administrative intervention. The idea behind requiring administrative action is so that a human engineer can intercede. the aging specification applies to all VLANs.cisco.

cisco. SPAN can monitor one or more source ports or EtherChannels in a single SPAN session. Reference: http://www.2SX/configuration/guide/book/ span. as opposed to the original access control entries (ACEs) configured by the user. B. The switch needs to be rebooted before the SDM template takes effect. What is a cause for this issue? A. generate the number of TCAM entries listed for security and QoS ACEs. VLAN filters are required to ensure traffic mirrors effectively. all processing overflow is sent to the CPU which can have a major impact on the performance of the switch. RSPAN must be used to capture EtherChannel bidirectional traffic. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: A source port or EtherChannel is a port or EtherChannel monitored for traffic analysis. C.cisco. If the boundary is exceeded. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: SDM Template Notes: All templates are predefined. The switch reload is required to use a new SDM template. The port channel can be used as a SPAN source.switches/44921-swdatabase-3750ss-44921. SPAN encapsulation replication must be enabled to capture EtherChannel destination traffic. After configuring SPAN to monitor this port. The VLAN template disables routing in hardware. Choosing the VLAN template will actually disable routing (number of entry for unicast or multicast route is zero) in hardware. but not a destination. You can configure ports or EtherChannels in any VLAN as SPAN sources. D. You can configure both Layer 2 and Layer 3 ports and EtherChannels as SPAN sources.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.com/ . Reference: http://www.html#wp1040905 http://www.com/c/en/us/support/docs/switches/catalyst-3750-series. The first eight lines (up to Security ACEs) represent approximate hardware boundaries set when a template is used. Trunk ports or EtherChannels can be configured as sources and mixed with nontrunk sources.exam.C. D. the network administrator notices that not all traffic is being replicated to the management server. There is no way to edit template category individual values. A port-channel interface (an EtherChannel) can be a SPAN source.html QUESTION 22 An access switch has been configured with an EtherChannel port. The ACL merge algorithm. but not a destination.

The EtherChannels would not form because the load-balancing method must match on the devices. D.marizes the results for LACP channel establishment based on the http://www.com/ . but network loops would occur because the load-balancing methods do not match.exam. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: An etherchannel will form if one end is active and the other is passive. The table below sum. C. The EtherChannels would form.QUESTION 23 Refer to the exhibit. The EtherChannels would form and both devices would use the dst-ip load-balancing method because Switch1 is configured with EtherChannel mode active. B. The EtherChannels would form and function properly even though the load-balancing and EtherChannel modes do not match. What is the result of the configuration? A.

com/c/en/us/td/docs/switches/lan/catalyst4500/12. The storm control configuration will be accepted. The configuration will be rejected because storm control is not supported for EtherChannel. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.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. B.html#wp1020804 QUESTION 24 A network engineer tries to configure storm control on an EtherChannel bundle. PagP. and not at the physical interface level. 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. forward traffic simultaneously using both supervisors B.cisco. you should configure Storm Control at the EtherChannel Interface level. all channels (manually configured. D. or LACP) use the same load-balancing. but not on the associated physical ports. For example.html QUESTION 25 What is the function of NSF? A. If you configure Storm Control on only some of the ports.exam. Therefore. although each switch involved in the etherchannel can have non matching parameters for load balancing. C.2/31sg/configuration/guide/ conf/channel. Storm Control must be configured on all or none of the ports. but will only be present on the physical interfaces.cisco. This is true for the switch globally. Reference: http://www. forward traffic based on Cisco Express Forwarding C.com/ .2/54sg/configuration/guide/config/channel. As a result. Reference: http://www. those ports will be dropped from the EtherChannel interface (put in suspended state). The storm control settings will appear on the EtherChannel. Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: After you configure an EtherChannel. What is the result of the configuration? A. you cannot configure Storm Control on some of the members of an EtherChannel.com/c/en/us/ td/docs/switches/lan/catalyst4500/12. provide automatic failover to back up supervisor in VSS mode http://www.

html QUESTION 27 After reviewing UDLD status on switch ports.D. UDLD port is configured in aggressive mode. Switches would operate as a single logical virtual switch called a virtual switching system 1440 (VSS1440).com/article-cisco-catalyst-6500-series-vss-1440. UDLD is enabled globally. and scaling system bandwidth capacity to 1.cisco.124536783. Normal UDLD operations that prevent traffic loops.over-blog. B. UDLD tries to reestablish the connection with the neighbor. increasing operational efficiency. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: With UDLD aggressive mode enabled. Reference: http://www. Only one of the virtual switch members has the active control plane.html QUESTION 26 After UDLD is implemented.4 Tbps. when a port on a bidirectional link that has a UDLD neighbor relationship established stops receiving UDLD packets. D. The port is fully operational and no known issues are detected.2SX/configuration/guide/book/udld. C. VSS formed by two Cisco Catalyst 6500 Series Switches with the Virtual Switching Supervisor 720-10GE. In a VSS. Reference: http://ciscorouterswitch. boosting nonstop communications.exam.com/ . After eight failed retries. This port continues to reestablish until after eight failed retries." Which statement describes what this indicates about the status of the port? A. Which option describes what causes the port to go into the errdisable state? A. 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. the port is disabled. a Network Administrator noticed that one port stops receiving UDLD packets. 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. http://www.com/c/en/us/td/docs/switches/lan/ catalyst6500/ios/12. The port then transitions into the errdisable state. an engineer notices that the. UDLD timers are inconsistent. provide nonstop forwarding in the event of failure of one of the member supervisors Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: VSS is network system virtualization technology that pools multiple Cisco Catalyst 6500 Series Switches into one virtual switch. combining for an active 1400Gbps switching capacity per VSS.

exam. only one of which is forwarding at any given time. the status will transition to bidirectional. The root port transitions to the forwarding state immediately without going through the listening and learning states. B. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: By default. UDLD is disabled on all interfaces. By enabling UplinkFast with the spanningtree uplinkfast global configuration command. C. C. Reference: http://packetlife. An uplink group is a set of Layer 2 interfaces (per VLAN). This enables UDLD in normal mode. E. an uplink group consists of the root port (which is forwarding) http://www. UDLD moved into aggressive mode after inconsistent acknowledgements were detected. The port will remain operational during this time. Specifically.B. D. The bidirectional status of "unknown" indicates that the port will go into the disabled state because it stopped receiving UDLD packets from its neighbor. Which spanning-tree technology is used to accomplish backup root port selection? A. UplinkFast provides fast convergence after a direct link failure and achieves load balancing between redundant Layer 2 links using uplink groups.com/ . so when UDLD is first enabled and does not detect a neighbor the link state is considered unknown. it begins using the alternate paths as soon as the spanning tree selects a new root port. F. D. When UDLD is finally enabled on the other end. STP immediately replaces the root port with an alternative root port. The UDLD port is placed in the "unknown" state for 5 seconds until the next UDLD packet is received on the interface.net/blog/2011/mar/7/udld/ QUESTION 28 Pilot testing of the new switching infrastructure finds that when the root port is lost. It would be prohibitively difficult to coordinate the configuration of UDLD on both ends of a link at the same time. as it would with the normal spanning-tree procedures. which is not necessarily an error condition. PVST+ PortFast BackboneFast UplinkFast Loop Guard UDLD Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: I f a switch loses connectivity. you can accelerate the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. or individually on specific interfaces with the command udld port. We can enable UDLD globally on the device.

D. except for self-looping ports. called bridge protocol data units (BPDUs). When two ports on a switch are part of a loop. port priority. B. Correct Answer: A Section: [none] Explanation http://www. Ensure that IP CEF is enabled globally to support all load balancing methods. 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.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12.exam. port-priority cost forward-timers link type root guard Correct Answer: AB Section: [none] Explanation Explanation/Reference: Explanation: Spanning tree forces redundant data paths into a standby (blocked) state.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12. Adjust the switch SDM back to "default". 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.cisco. and path cost.) A. D. E. Which two elements are used to accomplish this? (Choose two.2_55_se/configuration/guide/3750xscg/swstp. Upgrade the PFC to support the latest load balancing methods.com/ . Configure the new load balancing method using port-channel load-balance. including switch and MAC addresses. Switches send and receive spanning-tree frames. switch priority.2_55_se/configuration/guide/scg_2960/swstpopt.and a set of blocked ports. B. If a network segment in the spanning tree fails and a redundant path exists. 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. Reference: http://www.cisco. The path cost value represents the media speed. the spanningtree algorithm recalculates the spanning-tree topology and activates the standby path. Reference: http://www.html QUESTION 30 A network engineer must set the load balance method on an existing port channel. The uplink group provides an alternate path in case the currently forwarding link fails. Which action must be done to apply a new load balancing method? A. C. BPDUs contain information about the sending switch and its ports. at regular intervals.html QUESTION 29 A network engineer must adjust the STP interface attributes to influence root port selection. The switches do not forward these frames but use them to construct a loop-free path.

exam. What is causing the line protocol on this interface to be shown as down? A. There is a layer 1 physical issue. or both source and destination addresses. E. The mode applies to all EtherChannels that are configured on the switch. EtherChannel load balancing can use MAC addresses or IP addresses. You configure the load balancing and forwarding method with use of the port-channel load-balance {dst-ip | dst-mac | src-dst-ip | src-dst-mac | src-ip | src-mac} global configuration command.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.com/ . Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: http://www. The interface is configured as the target of the SPAN session. A network engineer investigates a recent network failure and notices that one of the interfaces on the switch is still down.cisco.html QUESTION 31 Refer to the exhibit. There is a speed mismatch on the interface.Explanation/Reference: Example: 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. Reference: http://www. There is a duplex mismatch on the interface. D. The interface is configured as the source of the SPAN session. B. C. source or destination addresses.

xml&pid=2&converted=0 QUESTION 33 Which technique allows specific VLANs to be strictly permitted by the administrator? A.com/CiscoSB/GetArticle. B. Reference: http://www. E. E. It allows you to track instances even if the native VLAN ID or port duplex states do not match between connecting devices.com/ . C.cisco. Which option must be enabled to allow for enhanced reporting mechanisms using Cisco Discovery Protocol? A.shtml QUESTION 32 While doing network discovery using Cisco Discovery Protocol. Cisco Discovery Protocol version 2 Cisco IOS Embedded Event Manager logging buffered Cisco Discovery Protocol source interface Cisco Discovery Protocol logging options Correct Answer: A Section: [none] Explanation Explanation/Reference: CDP Version 1 -.aspx? docid=0ed03cbac49b446ab390a657917d817c_Cisco_Discovery_Protocol_CDP__Properties_Set tings_on_Sx500_S.With the SAPN destination port. Reference: http://sbkb. CDP Version 2 -. VTP pruning transparent bridging trunk allowed VLANs VLAN access-list L2P tunneling Correct Answer: C Section: [none] http://www.This is the first version of CDP which was used for the discovery of Cisco devices in the network. This is the normal operational state for SPAN destinations.exam. the state of the destination port is up/down by design. The interface shows the port in this state in order to make it evident that the port is currently not usable as a production port.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c61 2. C. D. which is used to track down errors and minimize costly downtime. it is found that rapid error tracking is not currently enabled. D. B.This is the most recent version of CDP which has enhanced features such as rapid reporting mechanism. This version is mainly used for backward compatibility. This is the default version on all switches.cisco.

To restrict the traffic a trunk carries. preventing traffic from those VLANs from passing over the trunk. You can use this command only when the interface switchport mode is access or trunk. Disable DTP on a per interface basis. configure "switchport nonegotiate. Reference: http://www. B.exam.cisco.html QUESTION 34 For security reasons. Which two actions can prevent interface trunking? (Choose two. Apply BPDU guard and BPDU filter. DTP causes increased traffic. Correct Answer: AB Section: [none] Explanation Explanation/Reference: Explanation: The Dynamic Trunking Protocol (DTP) is used to negotiate forming a trunk between two Cisco devices.) http://www.com/ .asp?p=2181837&seqNum=8 QUESTION 35 Which two protocols can be automatically negotiated between switches for trunking? (Choose two. but may be disabled. the IT manager has prohibited users from dynamically establishing trunks with their associated upstream switch.com/en/US/docs/switches/lan/catalyst3550/software/release/12. you can remove VLANs from the allowed list. Reference: http://www. use the "switchport trunk allowed vlan remove vlan-list" interface configuration command to remove specific VLANs from the allowed list.) A. a trunk port sends traffic to and receives traffic from all VLANs. All VLAN IDs." This prevents the interface from generating DTP frames. You must manually configure the neighboring interface as a trunk interface to establish a trunk link. are allowed on each trunk. D.Explanation Explanation/Reference: Explanation: By default. 1 to 4094. To disable DTP.ciscopress. Configure trunk and access interfaces manually. However. Enable switchport block on access ports. C. otherwise the link will be a non-trunking link.1_13_ea1/confi guration/guide/swvlan.com/articles/article. and is enabled by default.

http://www. C. B. the switchport trunk encapsulation [dot1q | isl | negotiate] interface command must be used prior to the switchport mode trunk command. B. After verifying all VTP settings. Reference: https://learningnetwork.1Q or ISL trunking encapsulation.cisco.exam.com/ . PPP DTP ISL HDLC DLCI DOT1Q Correct Answer: CF Section: [none] Explanation Explanation/Reference: Explanation: Switches such as the Catalyst 3550 that are capable of either 802. Reload the new switch.57313/Dynamic%20Trunking%20Protocol. Reload the VTP server. Restart the VTP process on the new switch. Which action resolves this problem? A. D.PDF QUESTION 36 A network is running VTPv2. Correct Answer: D Section: [none] Explanation http://www. E. F.exam.com/ A. D. C. Verify connected trunk ports.com/servlet/JiveServlet/previewBody/14792-102-1. the network engineer notices that the new switch is not receiving the list of VLANs from the server.

Use VTP pruning on the trunk interfaces.Explanation/Reference: Explanation: VTP should never need to have the switch reloaded or the VTP process to restart in order for it to work. The first thing that should be done is to verify that the trunk ports are connected and up. You must reenter the password if you enter a takeover command in the domain.cisco. Another switch in the domain has a higher revision number than the server. B. VTP must be stopped and restarted on the server. When hidden. If extended VLANs are configured. the secret key from the password string is saved in the VLAN database file.com/ . Modify the spanning-tree priorities to dictate the traffic flow.2_52_se/config uration/guide/swvtp. but it does not appear in plain text in the configuration.exam. When you enter the secret keyword. Support for extended range VLAN (VLANs 1006 to 4094) database propagation. it takes up to 4 hours propagate. http://www. What is the problem? A. B. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: VTP version 3 supports these features that are not supported in version 1 or version 2: Enhanced authentication--You can configure the authentication as hidden or secret. the key associated with the password is saved in hexadecimal format in the running configuration. VTP versions 1 and 2 propagate only VLANs 1 to 1005. you cannot convert from VTP version 3 to version 1 or 2. C. After each update to the VTP server. The VTP server must be reloaded. E. QUESTION 37 After configuring new data VLANs 1020 through 1030 on the VTP server. you can directly configure the password secret key. Configure manual trunk pruning between the two locations. a network engineer notices that none of the VTP clients are receiving the updates.html#wp1316856 QUESTION 38 A network engineer is extending a LAN segment between two geographically separated data centers. Instead. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? A. C. Reference: http://www. D. D. Create a Layer 3 transit VLAN to segment the traffic between the sites. The VTP version number must be set to version 3.com/en/US/docs/switches/lan/catalyst3560/software/release/12.

VTP-pruned VLANs do not reduce the number of spanning tree port instances. What is the root cause of the problem? A. Allowing additional VLANs across the trunk introduced a loop in the network. VTP pruning--Avoid this method if the goal is to reduce the number of STP instances. the method runs the pruned VLAN on trunks. how many VLANs can be used to carry user traffic? A. and it avoids the use of the spanning tree.cisco. VTP. all other existing VLANs no longer pass traffic over the trunk.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613. B.shtml QUESTION 39 The network manager has requested that several new VLANs (VLAN 10. Reference: https://supportforums. 1001 http://www. 20. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: The "switchport trunk allowed vlan" command will only allow the specified VLANs. 1000 B. You would also need to explicitly allow the other working VLANs to this configuration command. The command effectively removed all other working VLANs and replaced them with the new VLANs.Correct Answer: C Section: [none] Explanation Explanation/Reference: 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.30 is issued. Since the question asked for the choice that is an enhancement to the STP design. After the command switchport trunk allowed vlan 10.exam. C. and 30) are allowed to traverse the switch trunk interface. Therefore.com/ . VTP pruning is the best choice. Reference: http://www.cisco.20. 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. and overwrite any others that were previously defined.com/document/11836/how-define-vlans-allowed-trunk. Instead.pruned VLANs on a trunk are still part of the spanning tree. VTP pruning removed all unused VLANs. ISL was unable to encapsulate more than the already permitted VLANs across the trunk.link QUESTION 40 When you design a switched network using VTPv2. D.

C. Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: The "vlan dot1q tag native" will tag all untagged frames.com/ . D. with the defined native VLAN. D.html QUESTION 41 What does the command vlan dot1q tag native accomplish when configured under global configuration? A. Reference: http://cciememo. QUESTION 42 A network engineer has just deployed a non-Cisco device in the network and wants to get information about it from a connected device.exam.blogspot. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s). B. C. IRDP LLDP NDP LLTD http://www. Only VTP version 3 supports extended VLANs (1-4095). Which protocol does the network engineer configure on both devices to accomplish this? A. so the open standard protocol must be configured. E. Control traffic is tagged. Cisco Discovery Protocol is not supported. F. except when the native VLAN is set to 1. It allows control traffic to pass using the non-default VLAN. All frames within the native VLAN are tagged.C. 1024 2048 4095 4096 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: VTP versions 1 and 2 Supports normal VLAN numbers (1-1001). D.com/2012/11/difference-between-vtp-versions. B. including control traffic.

D. Note: The allowed VLAN list on both the ends of the trunk link should be the same. the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state. This keeps traffic from the VLANs from passing over the trunk link. LLDP performs functions similar to several proprietary protocols. C. capabilities. Reference: https://supportforums.wikipedia. B. Which option can be configured to accomplish this? A. Reference: http://en.To restrict the traffic that a trunk carries. B. such as the Cisco Discovery Protocol (CDP). allowed VLAN list VTP pruning VACL L2P tunneling Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: When a trunk link is established. However. VLANs 1 through 1005 are allowed on each trunk by default.link QUESTION 44 For client server failover purposes.com/document/11836/how-define-vlans-allowed-trunk. For their disaster recovery feature to operate successfully. C. This removes specific VLANs from the allowed list. all of the configured VLANs are allowed to send and receive traffic across the link. For Integrated Cisco IOS Software based switches.com/ . and neighbors on an IEEE 802 local area network. principally wired Ethernet. D. perform these steps: 1. VLAN traffic can be removed from the allowed list. Rapid Spanning-Tree Spanning-Tree Timers Spanning-Tree FastPort Spanning-Tree PortFast http://www.org/wiki/Link_Layer_Discovery_Protocol QUESTION 43 A manager tells the network engineer to permit only certain VLANs across a specific trunk interface.cisco. they require the switchport to enter a forwarding state immediately. issue the switchport trunk vlan-list interface configuration command.Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity. Which spanningtree feature satisfies this requirement? A.exam.

com/ .24 Switch-C(config-if-range)# spanning-tree portfast Reference: http://www. the port eventually transitions into STP blocking mode.E. Spanning-Tree Fast Forward Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: In order to allow immediate transition of the port into forwarding state. E. switch# show spanning-tree vlan 10 switch# show spanning-tree bridge switch# show spanning-tree brief switch# show spanning-tree summary switch# show spanning-tree vlan 10 brief Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Command Description show spanning-tree Displays information about the spanning-tree state. B.informit.exam.aspx? b=CCNP_Studies_Switching&seqNum=36 QUESTION 45 Which command does a network engineer use to verify the spanning-tree status for VLAN 10? A. Example configuration: Switch-C# configure terminal Switch-C(config)# interface range fa0/3 . enable the STP PortFast feature. So if the port is to be a part of the loop. C. PortFast immediately transitions the port into STP forwarding mode upon linkup.com/library/content. Example output: SW2#show spanning-tree vlan 10 VLAN0010 http://www. D. The port still participates in STP.

com/en/US/docs/ios/lanswitch/command/reference/lsw_s2.com/ .f2d2.-------. C. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: By default. VLANs. Switches with higher revision numbers does not accept the new domain name.216 P2p Po23 Altn BLK 9 128.html QUESTION 46 A new network that consists of several switches has been connected together via trunking interfaces. 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.232 P2p Reference: http://www.57d8. If all switches currently have the default VTP domain name "null". B. and the configuration revision number. Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database. If the switch hears a VTP advertisement it will automatically learn the VTP domain name. The switch with the non-default domain name restores back to "null" upon reboot. which statement describes what happens when a domain name is configured on one of the switches? A.--------------------------.Po21 Root FWD 9 128.cisco.--.--------. VTP summary advertisements are sent out of all ports with the new domain name.9000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 sec Interface Role Sts Cost Prio. All other switches with the default domain name become VTP clients. Contained in a summary advertisement: VTP version Domain name Configuration revision number Time stamp MD5 encryption hash code http://www.Nbr Type ------------------.Spanning tree enabled protocol rstp Root ID Priority 24586 Address 0014.exam. a switch will have a domain name of NULL and no password.

featuring an access Switch A. on the other hand. connected to two Building Distribution submodule Switches D1 and D2. B. Which Spanning Tree Protocol should be used to reduce switch resources and managerial burdens that are associated with multiple spanning-tree instances? A.com/ . D. RSTP PVST MST PVST+ RPVST+ Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Multiple Spanning Tree (MST) extends the IEEE 802.dionicio. Figure 3-15 shows a common network design. there are 1000 VLANs. In this setup.exam.net/configuring-cisco-vtp/ QUESTION 47 A network engineer is setting up a new switched network.Reference: https://rowell. MST. 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. C. 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. E.1w RST algorithm to multiple spanning trees. http://www. The network is expected to grow and add many new VLANs in the future. PVRST+ runs STP instances for each VLAN and does not take into consideration the physical topology that might not require many different STP topologies. uses a minimum number of STP instances to match the number of physical topologies present.

for example. B. The 1000 VLANs map to two MST instances. the switch SDM templates prioritize system resources to optimize support for certain features.exam. D.tree_19.blogspot. each switch needs to maintain only two spanning trees.Figure 3-15: VLAN Load Balancing Figure 3-15 illustrates two links and 1000 VLANs.html QUESTION 48 Which statement about the use of SDM templates in a Cisco switch is true? A. SDM templates are used to configure ACLs that protect networks and specific hosts from unnecessary or unwanted traffic. C. SDM templates are configured by accessing the switch using the web interface. 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.com/2011/05/chapter-03-implementing-spanning. depending on how the switch is used in the network. reducing the need for switch resources. E. 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. http://www. To allocate hardware resources for different usages.com/ . You can select a template to provide maximum system usage for some functions. and use access template to obtain maximum ACL usage. Reference: http://ciscodocuments. Rather than maintaining 1000 spanning trees. use the default template to balance resources. depending on how the switch is used in the network. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: You can use SDM templates to configure system resources in the switch to optimize support for specific features. SDM templates are used to configure system resources in the switch to optimize support for specific features.

VLAN default access routing Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: http://www.com/ .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. the switch SDM templates prioritize system resources to optimize support for certain features. Reference: http://www. Routing--The routing template maximizes system resources for IPv4 unicast routing. VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC addresses. B. D. B.pdf QUESTION 49 Which SDM template disables routing and supports the maximum number of unicast MAC addresses? A.cisco.2_55_se/config uration/guide/swsdm.2_55_s e/configuration/guide/swsdm. Default--The default template gives balance to all functions. C.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12. VLAN access default routing Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: To allocate ternary content addressable memory (TCAM) resources for different usages. It would typically be selected for a Layer 2 switch.com/en/US/docs/switches/lan/catalyst3560/software/release/12.cisco.exam.pdf QUESTION 50 Which SDM template is the most appropriate for a Layer 2 switch that provides connectivity to a large number of clients? A. C. D. typically required for a router or aggregator in the center of a network.

You can select SDM templates to optimize these features: Access--The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs. If a VLAN is not specified.To allocate ternary content addressable memory (TCAM) resources for different usages. D. perform this task: Command Purpose Step 1 switch# configure ter. C.cisco. It would typically be selected for a Layer 2 switch. Reference: http://www.html QUESTION 52 If a network engineer applies the command mac-address-table notification mac-move on a Cisco switch port.com/ . what is the default period of time after which a MAC address ages out and is discarded? A. when is a syslog message generated? A. the switch SDM templates prioritize system resources to optimize support for certain features. Reference: http://www. VLANs--The VLAN template disables routing and supports the maximum number of unicast MAC addresses (clients).dress-table aging-time carded from the MAC address table.pdf QUESTION 51 In a Cisco switch. A MAC address or host moves between different switch ports. http://www. minal Step 2 switch(config)# mac-ad. Entering the value 0 disables the MAC aging.Specifies the time before an entry ages out and is dis. The range is from seconds [vlan vlan_id] 0 to 1000000. the aging specification applies to all VLANs.com/en/US/docs/switches/lan/catalyst3560/software/release/12. Routing--The routing template maximizes system resources for IPv4 unicast routing.exam.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/M ACAddress. B. the default is 300 seconds.cisco.Enters configuration mode. typically required for a router or aggregator in the center of a network. Default--The default template gives balance to all functions.2_55_se/config uration/guide/swsdm. 100 seconds 180 seconds 300 seconds 600 seconds Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: To configure the aging time for all MAC addresses.

B. syslog (Optional) Specifies the syslogging facility when the MAC-move notification detects the first instance of the MAC move. D. A new MAC address is removed from the content-addressable memory. The reason can be: Duplex mismatch http://www. Reference: http://www. More than 64 MAC addresses are added to the content-addressable memory. C. use the mac-address-table notification mac-move com. A new MAC address is added to the content-addressable memory.com/ .B. routing loop cable unplugged STP loop guard security violation Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: There are various reasons for the interface to go into errdisable. use the no form of this command. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: mac-address-table notification mac-move To enable MAC-move notification. C.html QUESTION 53 Which option is a possible cause for an errdisabled interface? A.com/en/US/docs/ios/lanswitch/command/reference/lsw_m1. 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. To disable MAC-move notification. Usage Guidelines MAC-move notification generates a syslog message whenever a MAC address or host moves between different switch ports. D.mand in global configuration mode.cisco.exam.

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
Inline power
Reference:
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml
QUESTION 54
What is the default value for the errdisable recovery interval in a Cisco switch?
A.
B.
C.
D.

30 seconds
100 seconds
300 seconds
600 seconds

Correct Answer: C
Section: [none]
Explanation
Explanation/Reference:
Explanation:
After you fix the root problem, the ports are still disabled if you have not configured errdisable recovery on the switch. In this case, you must reenable the ports
manually. Issue the shutdown command and then the no shutdown interface mode command on the associated interface in order to manually reenable the ports.

http://www.exam.com/

The errdisable recovery command allows you to choose the type of errors that automatically reenable the ports after a specified amount of time. The show
errdisable recovery command shows the default error-disable recovery state for all the possible conditions.
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, by default, the timeout feature is disabled.
Reference:
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml
QUESTION 55
Which statement about LLDP-MED is true?
A.
B.
C.
D.

LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices.
LLDP-MED is an extension to LLDP that operates only between network devices.
LLDP-MED is an extension to LLDP that operates only between endpoint devices.
LLDP-MED is an extension to LLDP that operates between routers that run BGP.

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
Explanation:

http://www.exam.com/

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. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery, network policy, Power over
Ethernet, and inventory management.
Reference:
http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_58_se/configur ation/guide/swlldp.pdf
QUESTION 56
Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true?
A.
B.
C.
D.

Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC.
Each device broadcasts periodic advertisements to all of its neighbors.
Each device sends periodic advertisements to a central device that builds the network topology.
Each device sends periodic advertisements to all IP addresses in its ARP table.

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
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
QUESTION 57
Which option lists the information that is contained in a Cisco Discovery Protocol advertisement?
A.
B.
C.
D.

native VLAN IDs, port-duplex, hardware platform
native VLAN IDs, port-duplex, memory errors
native VLAN IDs, memory errors, hardware platform
port-duplex, hardware platform, memory errors

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
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
http://www.exam.com/

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
QUESTION 58
Which option describes a limitation of LLDP?
A.
B.
C.
D.

LLDP cannot provide information about VTP.
LLDP does not support TLVs.
LLDP can discover only Windows servers.
LLDP can discover up to two devices per port.

Correct Answer: A
Section: [none]
Explanation

http://www.exam.com/

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. D. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures. capabilities.html QUESTION 59 Which statement about the UDLD protocol is true? A. capabilities. UDLD is a standardized Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.Management-Address TLV dressTLV Allows for organizational unique TLVs Yes No Reference: http://www.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.com/en/US/technologies/tk652/tk701/technologies_white_paper0900aecd804c d46d.com/ . UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity. Correct Answer: A Section: [none] Explanation http://www. C. and neighbors on a local area network. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity.exam. where No Port UniDirectional the connection may be unidirectional Mode TLV Management address Management Ad. B. and neighbors on a local area network.TLV length-division multiplexing (WDM) VTP management support No VTP Management Domain TLV Port unidirectional mode-Used in fiber.Explanation/Reference: Explanation: LLDP Versus Cisco Discovery Protocol TLV Comparison Function Description LLDP TLV Cisco Discovery Protocol TLV IP network prefix support-Used to send the net.cisco.

UDLD detects the existence of unidirectional links. Reference: http://www. UDLD detects the existence of unidirectional links.cisco. E.exam. UDLD can operate in either normal or aggressive mode. normal and aggressive active and aggressive normal and active normal and passive normal and standby Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD. UDLD puts the affected port into the errdisabled state and alerts the user.com/ .Explanation/Reference: Explanation: The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD.com/ http://www. UDLD puts the affected port into the errdisabled state and alerts the user. When a unidirectional link is detected. B. When a unidirectional link is detected. Reference: http://www.html QUESTION 60 Which option lists the modes that are available for configuring UDLD on a Cisco switch? A.exam.html QUESTION 61 What is the default interval at which Cisco devices send Cisco Discovery Protocol advertisements? http://www.cisco.2SX/configuration/guide/udl d.com/en/US/docs/switches/lan/catalyst6500/ios/12.com/en/US/docs/switches/lan/catalyst6500/ios/12. C. D.2SX/configuration/guide/udl d.

Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: CDP is enabled on your router by default.exam. C. which indicates the length of time a receiving device should hold Cisco Discovery Protocol information before discarding it. media-independent. use the "no cdp enable interface" configuration command. every 60 seconds.html QUESTION 62 Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true? A. by default. use the "no cdp run" command.html#wp10175 QUESTION 63 Which VTP mode is needed to configure an extended VLAN.com/en/US/docs/iosxml/ios/cdp/configuration/15-mt/nm-cdp. They also listen to messages to learn when interfaces on other devices are up or go down. CDP is disabled by default and can be enabled globally with the command cdp enable. Devices discover each other by listening at that address. Cisco Discovery Protocol is enabled by default. and network-independent protocol that networking applications use to learn about nearby. Reference: http://www. B. which means the Cisco IOS software will receive CDP information. D. To disable it globally. Advertisements supported and configured in Cisco software are sent.com/en/US/docs/ios/12_2/configfun/command/reference/frf015.cisco. 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.A. when a switch is configured to use VTP versions 1 or 2? http://www. D.com/ .cisco. directly connected devices. Advertisements contain time-to-live information. To disable CDP on an interface. 30 seconds 60 seconds 120 seconds 300 seconds Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: Cisco Discovery Protocol is a Layer 2.discover. CDP is enabled by default and can be disabled globally with the command no cdp run. Reference: http://www. CDP is disabled by default and can be enabled globally with the command cdp run. C. B. CDP also is enabled on supported interfaces by default. CDP is enabled by default and can be disabled globally with the command no cdp enable.

com/ .1q frame? A.org/wiki/IEEE_802. html QUESTION 64 What is the size of the VLAN field inside an 802. B. Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: VTP version 1 and version 2 support VLANs 1 to 1000 only.cisco. The hexadecimal values of 0x000 and 0xFFF are reserved. D.2SX/configuration/guide/vtp.A.exam.wikipedia. VLANs in the range 1006 to 4094 are removed from VTP control. B. transparent client server Extended VLANs are only supported in version 3 and not in versions 1 or 2. Reference: http://www.com/en/US/docs/switches/lan/catalyst6500/ios/12. allowing up to 4. C.094 VLANs Reference: http://en. All other values may be used as VLAN identifiers. Extended-range VLANs are supported only in VTP version 3. D.1Q QUESTION 65 What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN? http://www. 8-bit 12-bit 16-bit 32-bit Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: The VLAN field is a 12-bit field specifying the VLAN to which the frame belongs. If converting from VTP version 3 to VTP version 2. C.

If more than one VLAN is needed.A. QUESTION 66 Refer to the exhibit. C. D. Which option shows the expected result if a show vlan command is issued? http://www. B.com/ .exam. the port should be configured as a trunk port. 0 1 2 1024 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: A standard (non-voice VLAN port) access switch port can belong to only a single VLAN.

B. http://www. C.A.exam.com/ .

Exhibit D Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: In this case. Exhibit C D. ignoring the switchport access VLAN 10 command. but not automatically disabled when a voice VLAN is removed? A.com/ . portfast port-security spanning tree storm control Correct Answer: A Section: [none] Explanation http://www. Obviously. the port will actually be used as a trunk. the port has been configured both as a trunk and as a switchport in data vlan 10. C. B.D. a port can not be both. QUESTION 67 Which feature is automatically enabled when a voice VLAN is configured. Exhibit A B. D. Exhibit B C. A. so even though Cisco IOS will accept both.exam.

html QUESTION 68 In which portion of the frame is the 802. When you disable voice VLAN. The voice VLAN should be present and active on the switch for the IP phone to correctly communicate on the voice VLAN. D. the Port Fast feature is not automatically disabled.cisco. Reference: http://www. The Port Fast feature is automatically enabled when voice VLAN is configured.wikipedia. Instead. for Ethernet frames.1Q tag in an Ethernet frame 802.1q header found? A.Explanation/Reference: Explanation: Voice VLAN Configuration Guidelines You should configure voice VLAN on switch access ports. B.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1Q does not encapsulate the original frame.1_22_ea11x/co nfiguration/guide/swvoip. within the Ethernet header within the Ethernet payload within the Ethernet FCS within the Ethernet source MAC address Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Frame format Insertion of 802.exam. C. Use the show vlan privileged EXEC command to see if the VLAN is present (listed in the display). it adds a 32-bit field between the source MAC address and the EtherType/length fields of the original frame Reference: http://en.com/ .org/wiki/IEEE_802.1Q QUESTION 69 Which VLAN range is eligible to be pruned when a network engineer enables VTP pruning on a switch? http://www.

C. http://www.com/ . there are occasions when VTP can create unnecessary traffic.com/c/en/us/ support/docs/lan-switching/vtp/10558. All switches in the network receive all broadcasts.cisco.html#vtp_pruning QUESTION 71 Refer to the exhibit.A. B. However. all the clients in the VTP domain will automatically enable VTP pruning. even in situations in which few users are connected in that VLAN.com/VTP-Pruning. Reference: http://www.php QUESTION 70 Which feature must be enabled to eliminate the broadcasting of all unknown traffic to switches that are not participating in the specific VLAN? A. Both VTP versions 1 and 2 supports pruning. D. B. D. C. VTP pruning port-security storm control bpdguard Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: VTP ensures that all switches in the VTP domain are aware of all VLANs. Reference: http://www.21.orbit-computer-solutions. VLANs 2 1001 are pruning eligible.exam. but VLAN 1 can't be pruned because it's an administrative VLAN. By default. VTP pruning is a feature that you use in order to eliminate or prune this unnecessary traffic. All unknown unicasts and broadcasts in a VLAN are flooded over the entire VLAN. VLANs 1-1001 VLANs 1-4094 VLANs 2-1001 VLANs 2-4094 Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: VTP pruning should only be enabled on VTP servers.

The network engineer found that the engineering VLAN is missing from the database. C. QUESTION 72 Refer to the exhibit.1q. http://www. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Only VTP servers can add new VLANs to the switched network. Change VTP mode to server and enable 802. Update the VTP revision number. you will need to enable 802. so to enable vlan 10 on this switch you will first need to change the VTP mode from client to server.1q. B. Which action resolves this problem? A.exam.1q. Disable VTP pruning and disable 802. Enable VTP pruning and disable 802.1Q trunking to pass this new VLAN along to the other switches. Then. D.com/ .The users in an engineering department that connect to the same access switch cannot access the network.

Manually force trunking with switchport mode trunk on both switches. http://www. Which action resolves this problem? A.The network switches for two companies have been connected and manually configured for the required VLANs. but users in company A are not able to access network resources in company B when DTP is enabled. Disable DTP and document the VTP domain mismatch. B.exam. C. Delete vlan.com/ .dat and ensure that the switch with lowest MAC address is the VTP server.

only 802. Which Cisco IOS switching feature can be used to achieve the task? A. PPP encapsulation with a virtual template Link Aggregation Protocol at the access layer dot1q VLAN trunking Inter-Switch Link Correct Answer: C Section: [none] Explanation Explanation/Reference: 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. QUESTION 73 A network engineer must implement Ethernet links that are capable of transporting frames and IP traffic for different broadcast domains that are mutually isolated. QUESTION 74 Which statement about using native VLANs to carry untagged frames is true? A. Enable the company B switch with the vtp mode server command. The VTP domain names do match and they are both VTP servers so there are no issues there. D. http://www. C.D. Correct Answer: C Section: [none] Explanation Explanation/Reference: 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. 802. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information. 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. Cisco Discovery Protocol version 3 carries native VLAN information.1Q and ISL. but version 2 does not. B. B.com/ . D. Cisco Discovery Protocol version 1 carries native VLAN information. There are 2 different methods for trunking. Consider that this is a multivendor environment.1Q is supported by multiple vendors since ISL is a Cisco proprietary protocol. Cisco Discovery Protocol version 2 carries native VLAN information. C. but versions 1 and 2 do not. but version 1 does not.exam. Of these.

however. both with native VLAN mismatch.ciscopress. A multilayer switch has been configured to send and receive encapsulated and tagged frames.com/ .com/articles/article. spanning tree blocks local native VLAN traffic and the remote switch native VLAN traffic on the trunk. Correct Answer: C Section: [none] Explanation Explanation/Reference: Here we see that the native VLAN has been configured as 2013 on one switch.com/library/content. VLAN ID 1 should not be used for management traffic because its unsafe.asp?p=29803&seqNum=3 QUESTION 75 Refer to the exhibit. not via DTP messages. the trunk still remains up for other VLANs. B. D.1Q trunks. If you have a native VLAN mismatch. Reference: http://www.exam.Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Cisco Discovery Protocol (CDP) version 2 passes native VLAN information between Cisco switches. Native VLAN mismatches are detected via spanning tree and Cisco Discovery Protocol (CDP).1q trunks are on both sides. Reference: http://www.informit. Failure to do this causes Cisco switches to partially shut down the trunk port because having mismatched native VLANs can result in spanning-tree loops. If you use 802. Which option is the cause of the spanning-tree error? A. you will see CDP error messages on the console output. VLAN 2013 on the multilayer switch is configured as the native VLAN. you must ensure that you choose a common native VLAN for each port in the trunk. C. If spanning tree detects a native VLAN mismatch. spanning-tree bpdu-filter is enabled. VLAN spanning-tree in SW-2 is configured. 802. but 1 (the default native VLAN) on the other switch.aspx? http://www.

cisco. C. VLAN 1 is not VTP pruning eligible so it cannot be done via VTP pruning. B.b=CCNP_Studies_Switching&seqNum=25 QUESTION 76 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 "vtp pruning" command prunes VLANs automatically. Enable VTP pruning on the VTP server. Which Cisco IOS feature can be used to achieve this task? A. QUESTION 78 http://www. D. VTP pruning access list switchport trunk allowed VLAN VLAN access-map Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Cisco advocates the benefits of pruning VLANs in order to reduce unnecessary frame flooding. B. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Manaully pruning the default VLAN (1) can only be done with the "switchport trunk allowed vlans remove" command.html QUESTION 77 Which action allows a network engineer to limit a default VLAN from being propagated across all trunks? A. Upgrade to VTP version 3 for advanced feature set support. Manually prune default VLAN with switchport trunk allowed vlans remove.exam.switches/24330-185. Use trunk pruning vlan 1. which stops the inefficient flooding of frames where they are not needed. D. The "trunk pruning vlan 1" option is not a valid command.com/ . Reference: http://www. C.com/c/en/us/support/docs/switches/catalyst-6500-series.

1Q tunneling (Q-in-Q) feature increases the frame size by 4 bytes when the extra tag is added.1_13_ea1/confi guration/guide/swtunnel.exam. Explanation: http://www. C. Support less than 1500 MTU Support 1504 MTU or higher Support 1522 layer 3 IP and IPX packet Support 1547 MTU only Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: The default system MTU for traffic on Catalyst switches is 1500 bytes.com/ .com/en/US/docs/switches/lan/catalyst3550/software/release/12. D. B. Because the 802. you must configure all switches in the service-provider network to be able to process maximum frames by increasing the switch system MTU size to at least 1504 bytes. How many bytes are added to each frame as a result of the configuration? A.cisco. C. D. B. 4-bytes except the native VLAN 8-bytes except the native VLAN 4-bytes including native VLAN 8-bytes including native VLAN Correct Answer: A Section: [none] Explanation Explanation/Reference: http://www.What is required for a LAN switch to support 802.html QUESTION 79 Refer to the exhibit.1q Q-in-Q encapsulation? A.

Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: A LACP port priority is configured on each port using LACP. desirable. and on. Configure G0/1 as half duplex and G0/2 as full duplex.desirable.desirable. A VLAN tag adds 4 bytes to the frame. Reference: http://www. Only the combinations active-active. desirable. Only the combinations active-desirable. Two bytes are used for the tag protocol identifier (TPID). G0/2. D. Only the combinations auto-auto. desirable. The port priority can be configured automatically or through the CLI. and on-on allow the formation of a channel. LACP traffic goes through G0/4 because it is the highest interface ID. The higher the number. desirable. desirable. the lower the priority. C. B. and on-on allow the formation of a channel.exam. LACP uses the port priority with the port number to form the port identifier.desirable. and G0/4 between two switches using Ethernet port-channel. The valid range is from 1 to 65535.Explanation: In 802. QUESTION 80 A network engineer configured a fault-tolerance link on Gigabit Ethernet links G0/1.com/ . Configure LACP port-priority on G0/1 to 1.cisco.desirable. Which action allows interface G0/1 to always actively forward traffic in the port-channel? A. Only the combinations auto-desirable. and on. 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. Only the combinations auto-desirable. desirable. and on. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: PAgP modes are off. PAgP modes are active. Configure LACP port-priority on G0/1 to 65535. and on. and on-on will allow a channel to be formed.html#wp1081491 QUESTION 81 Which statement about the use of PAgP link aggregation on a Cisco switch that is running Cisco IOS Software is true? A. active.desirable. the other two bytes for tag control information (TCI). desirable. G0/3. B. C. PAgP modes are off. http://www. all VLAN packets are tagged on the trunk link. and on-on allow the formation of a channel. and on-on allow the formation of a channel. The default is 32768.com/c/en/us/td/docs/ios/12_2sb/feature/guide/gigeth. D. desirable. desirable.1Q trunking. except the native VLAN. auto. desirable. and on. PAgP modes are off. auto. PAgP modes are active.

off: PAgP will not run. 4.The PAgP modes are explained below.com/c/en/us/support/docs/switches/catalyst-2900-xl-series. such as a router. 2.tiated. The formation of a channel is desired and ini. and on-on will allow a channel to be formed. it is not initiated. auto: PAgP is running passively.exam. The formation of a channel is desired. Only the combinations of auto-desirable. 3. If a device on one side of the channel does not support PAgP. Reference: http://www.com/ . 1. on: PAgP will not run. http://www. The channel is forced to remain down.switches/21041-131. however. desirable: PAgP is running actively. desirable-desirable. The channel is forced to come up.cisco. the device on the other side must have PAgP set to on.html QUESTION 82 Refer to the exhibit.

Link Combination Control Protocol B. Port Aggregation Protocol C.exam. Port Combination Protocol http://www.Which EtherChannel negotiation protocol is configured on the interface f0/13 f0/15? A.com/ .

The link aggregate is formed if the other end runs in LACP active or passive mode. This is similar to the auto mode in PAgP. however.able mode of PAgP. 4. 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 . The channel is forced to come up. which is operating in desirable mode. eventually to form the aggregation channel with the peer. auto.tiated. desirable. 2. http://www. auto: PAgP is running passively. desirable: PAgP is running actively. This is similar to the desir.In other words. off: PAgP will not run. on: PAgP will not run.com/ . fa0/14. Only the combinations auto-desirable.desirable.exam. 1. . The channel is forced to remain down. We do not send or understand the LACP packet. we see that fa 0/13. QUESTION 83 Refer to the exhibit. it is not initiated. and on.D. Active: We can form an aggregate link and initiate the negotiation. which is only a PAgP mode. desirable. This is similar to the on state for PAgP. the switch neither sends the LACP packet nor processes any inbound LACP packet. The peer (in active state) initiates negotiation (when it sends out an LACP packet) which we receive and answer. This is similar to the off state for PAgP. Off: The link aggregation is not formed. and on-on will allow a channel to be formed. The formation of a channel is desired and ini. 3. In this example. Link Aggregation Control Protocol Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: PAgP modes are off. Passive: The switch does not initiate the channel but does understand inbound LACP packets. The formation of a channel is desired.

Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Since this traffic is coming from PC-1. PAgP does not change the port speed and duplex for all ports in the bundle until the switch is rebooted. PAgP changes the port speed and duplex for all ports in the bundle. traffic will only be using one of the port channel links. Which action can the engineer take to resolve this issue? A. the source MAC address will always be that of PC-1. C. Disable EtherChannel load balancing. The load balancing method should be changed to destination MAC. traffic is still slow. C. QUESTION 84 A network engineer changed the port speed and duplex setting of an existing EtherChannel bundle that uses the PAgP protocol. Change the load-balance method to dst-mac.com/ . D. Upgrade the switch IOS to IP services image. since the web server has two NICs traffic will be load balanced across both MAC addresses. B.Users of PC-1 experience slow connection when a webpage is requested from the server. To increase bandwidth. PAgP changes the port speed but not the duplex for all ports in the bundle. Correct Answer: A Section: [none] Explanation http://www. Contact Cisco TAC to report a bug on the switch. B. and since the load balancing method is source MAC. D.exam. 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. Which statement describes what happens to all ports in the bundle? A. the network engineer configured an EtherChannel on interfaces Fa1/0 and Fa0/1 of the server farm switch. PAgP drops the ports that do not match the configuration.

Reference: http://www. PAgP requires that all ports in the channel belong to the same VLAN or are configured as trunk ports.exam. all ports in the bundle are modified to match that VLAN. PAgP changes the port speed and duplex for all ports in the bundle. http://www.Explanation/Reference: Explanation: PAgP aids in the automatic creation of EtherChannel links. All interfaces in each EtherChannel must be the same speed. C. desirable.desirable. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 16 Gbps only for Gigabit EtherChannel. Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. B. D.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4. A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. and on-on allow the formation of a channel. and on. PAgP does not group ports that operate at different speeds or port duplex. auto. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel.com/c/ en/us/support/docs/lan-switching/etherchannel/12023-4. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link.cisco. PAgP packets are sent between EtherChannel-capable ports in order to negotiate the formation of a channel.cisco. 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 eight compatibly configured Ethernet interfaces in an EtherChannel. When a bundle already exists and a VLAN of a port is modified. Only the combinations auto-desirable.com/ .html QUESTION 85 Which statement about using EtherChannel on Cisco IOS switches is true? A. 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.html QUESTION 86 Refer to the exhibit. desirable. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel. PAgP modes are off. such as a router. Reference: http://www. 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. If speed and duplex change when a bundle exists. and all must be configured as either Layer 2 or Layer 3 interfaces. The restrictions are: PAgP does not form a bundle on ports that are configured for dynamic VLANs. Some restrictions are deliberately introduced into PAgP.

D. and Fa0/15 successfully formed a Layer 3 port-channel interface using a Cisco proprietary protocol. Fa0/14. and Fa0/15 successfully formed a Layer 2 port-channel interface using an open standard protocol. Physical port Fa0/13. and Fa0/15 successfully formed a Layer 2 physical port-channel interface using a Cisco proprietary protocol. Fa0/14. B. Logical port Fa0/13.Which statement about switch S1 is true? A.exam. and Fa0/15 successfully formed a Layer 3 physical port-channel interface using an open standard protocol. Physical port Fa0/13. Logical port Fa0/13. Correct Answer: A Section: [none] Explanation http://www. Fa0/14. Fa0/14.com/ . C.

B. the migrate-delay timer is started (specifies the minimum time during which RSTP BPDUs are sent).html QUESTION 88 When two MST instances (MST 1 and MST 2) are created on a switch.1d BPDU and eventually the two switches run 802.1d BPDU. Reference: http://www. 802. C. 1 2 3 4 Correct Answer: C Section: [none] http://www.1d to communicate. 802.1d BPDU and eventually the two switches run 802.1d to communicate. the switch processes all BPDUs received on that port and ignores the protocol type. it responds with an 802.1d BPDU.1d BPDU.exam.1D BPDUs. QUESTION 87 What happens on a Cisco switch that runs Cisco IOS when an RSTP-configured switch receives 802.1d BPDU and eventually the two switches run 802. what is the total number of spanning-tree instances running on the switch? A.1d does not understand RSTP BPDUs because they are different versions. and RSTP BPDUs are sent.1d to communicate. The protocol used for this port channel shows as LACP. If the switch receives an 802. which is Cisco proprietary. but when a RSTP switch receives an 802.com/ . but when a RSTP switch receives a 802. it does not respond with a 802.1d BPDU? A.cisco. and the (SU) means they are in use and operating at layer 2. While this timer is active.2SX/configuration/guide/book/spantree. When a port is initialized.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. 802. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: For backward compatibility with 802. it restarts the timer and starts using RSTP BPDUs on that port.1d understands RSTP BPDUs because they are the same version.1D BPDUs on a port and receives an RSTP BPDU after the timer has expired. if the RSTP switch is using 802. as opposed to PAgP. D. C. which is a standards based protocol.1d does not understand RSTP BPDUs because they are different versions. D. it does not respond with a 802. but when a RSTP switch receives a 802. but when a RSTP switch receives a 802.1D BPDU after the port migration-delay timer has expired.1D switch and starts using only 802.1d BPDU.1d understands RSTP BPDUs because they are the same version.1d BPDU.1D configuration BPDUs and TCN BPDUs on a per-port basis. 802.Explanation/Reference: Explanation: These three ports show that they are in Port Channel 1. it responds with a 802.1D switches. However. it assumes that it is connected to an 802. RSTP selectively sends 802. B.

Reference: http://www. there will be the 2 defined MST instances. but each MST in. A CIST is a collection of the ISTs in each MST region. MST maintains multiple spanning tree instances.cisco. for example. By default. all VLANs are assigned to the IST.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. root path cost. The CST interconnects the MST regions and single spanning trees. such as root bridge ID.html QUESTION 89 Refer to the exhibit. for a total of 3 instances.ning tree instance information is contained in MSTP records (Mrecords). In the case for this question.cantly reduced. and so forth. CIST. Instance 0 is a special instance for a region. even if regions A and B are interconnected.stance has its own topology parameters.lated within MST BPDUs.Explanation Explanation/Reference: Explanation: Unlike other spanning tree protocols. The IST is the only spanning tree instance that sends and receives BPDUs. All MST instances within the same region share the same protocol timers. http://www. Within each MST region. MST establishes and maintains IST. and the special 0 instance. known as the IST. An MST instance is local to the region. Because the MST BPDU carries information for all instances. All of the other span. and CST spanning trees: An IST is the spanning tree that runs in an MST region.com/ . in which all the spanning tree instances are independent.exam. MST instance 1 in region A is independent of MST instance 1 in region B. All other MST instances are numbered from 1 to 4094.2SX/configuration/guide/book/spantree. which are encapsu. the number of BPDUs that need to be processed to support multiple spanning tree instances is signifi.

exam. Modify the spanning-tree port-priority on SW1 f1/1 to 0 and f1/0 to 16. Modify the spanning-tree port-priority on SW2 f1/1 to 0 and f1/0 to 16. B. Modify the spanning-tree port-priority on SW2 f1/1 to 16 and f1/0 to 0. D.com/ . Modify the spanning-tree port-priority on SW1 f1/1 to 16 and f1/0 to 0. C. Correct Answer: C Section: [none] Explanation Explanation/Reference: http://www.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.

com/en/US/docs/switches/lan/catalyst2950/software/release/12. STP puts the LAN port with the lowest LAN port number in the forwarding state and blocks other LAN ports.1_9_ea1/config uration/guide/swstp. The bridge priority is 1 and all ports are forwarding. http://www. STP considers port priority when selecting a LAN port to put into the forwarding state. If all LAN ports have the same priority value.Explanation: If a loop occurs. configurable in increments of 16. You can assign higher priority values to LAN ports that you want STP to select first and lower priority values to LAN ports that you want STP to select last.com/ .html#wp1105354 QUESTION 90 Refer to the exhibit. A lower path cost represents higher-speed transmission and is preferred. Reference: http://www.cisco. The possible priority range is 0 through 240 (default 128).exam. Why would the switch be considered as a root bridge? A.

B. The switch priority for VLAN 1 and the macro specifies "This Bridge is the root".
C. The bridge priority is 128.19 and all ports are forwarding.
D. The switch priority value is zero, it has the lowest priority value for VLAN 1.
Correct Answer: D
Section: [none]
Explanation
Explanation/Reference:
Explanation:
For priority, the range is 0 to 61440 in increments of 4096; the default is 32768. The lower the number, the more likely the switch will be chosen as the root switch.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/config uration/guide/swstp.html#wp1020666
QUESTION 91
Refer to the exhibit.

All ports are members of VLAN 10. Considering the default cost of upstream bridges to the root bridge is equal, which option will be the new root port for VLAN 10?
A. interface f0/13

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B. interface f0/14
C. interface f0/15
D. interface f0/21
Correct Answer: D
Section: [none]
Explanation
Explanation/Reference:
Explanation:
Root Port election on each bridge
Each (non-Root) bridge has exactly one Root Port, which represents the best path to the Root Bridge.
Total Path Cost to root - lowest prevails (local Root Port cost added o
upon receipt of Configuration BPDUs on that port, from the direction of Root Bridge)
Connected Bridge ID - lowest prevails
o
Connected Port ID (Port Priority + Port#) - lowest prevails o
Local Port ID - lowest prevails
o
In this case, fa0/21 has the lowest cost, so it will be the root port.
Reference:
https://community.extremenetworks.com/extreme/topics/802_1d_spanning_tree_election_rules
QUESTION 92
A network engineer is trying to deploy a PC on a network. 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. Which Layer 2 enhancement can be used to eliminate this delay?
A.
B.
C.
D.

Configure port duplex and speed to auto negotiation.
Configure port to duplex full and speed 1000.
Configure spanning-tree portfast.
Configure no switchport.

Correct Answer: C
Section: [none]
Explanation
Explanation/Reference:
Explanation:
When first powered on, each port goes through 4 states to ensure that there are no physical loops in the layer 2 broadcast domain. These steps are outlined as
follows. With the initial version of spanning tree, this process could take from 30-60 seconds. 1.Blocking - A port that would cause a switching loop, no user data is

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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 may transition to the
forwarding state. BPDU data is still received in blocking state.
2.Listening - The switch processes BPDUs and awaits possible new information that would cause it to return to the blocking state.
3.Learning - 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.Forwarding - A port receiving and sending data, normal operation. STP still monitors incoming BPDUs that would indicate it should return to the blocking state to
prevent a loop.
STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately, bypassing the listening and learning states.
Reference: http://net.cmed.us/Home/ethernet-and-ip/spanning-tree-protocol
QUESTION 93
A network engineer configured an Ethernet switch using these commands.
Switchone(config) # Spanning-tree portfast bpdufilter default Which statement about the spanning-tree portfast feature on the switch is true?
A.
B.
C.
D.

If an interface is enabled for portfast receives BDPU, the port goes through the spanning-tree listening, learning, and forwarding states.
If an interface is enabled for portfast receives BDPU, the port does not go through the spanning-tree listening, learning, and forwarding states.
If an interface is enabled for portfast receives BDPU, the port is shut down immediately.
If an interface is enabled for portfast receives BDPU, the port goes into the spanning-tree inconsistent state.

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
Explanation:
STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately, bypassing the listening and learning states.
However, the "Spanning-tree portfast bpdufilter default" command specifies that if a BPDU is received on that port, then the default action of STP of listening,
learning, and forwarding states should be used.
QUESTION 94
Which statement describes what happens when a port configured with root guard receives a superior BPDU?
A.
B.
C.
D.

The port goes into errdisabled state and stops forwarding traffic.
The port goes into BPDU-inconsistent state and stops forwarding traffic.
The port goes into loop-inconsistent state and stops forwarding traffic.
The port goes into root-inconsistent state and stops forwarding traffic.

Correct Answer: D
Section: [none]

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Explanation
Explanation/Reference:
Explanation:
The root guard ensures that the port on which root guard is enabled is the designated port. Normally, root bridge ports are all designated ports, unless two or more
ports of the root bridge are connected together. If the bridge receives superior STP Bridge Protocol Data Units (BPDUs) on a root guard-enabled port, root guard
moves this port to a root-inconsistent STP state. This root-inconsistent state is effectively equal to a listening state. No traffic is forwarded across this port. In this
way, the root guard enforces the position of the root bridge.
Reference:
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800ae96b.shtml
QUESTION 95
Which statement about restrictions for multichassis LACP is true?
A.
B.
C.
D.

It is available only on a Cisco Catalyst 6500 Series chassis.
It does not support 1Gb links.
Converting a port channel to mLACP can cause a service disruption.
It is not available in VSS.

Correct Answer: C
Section: [none]
Explanation
Explanation/Reference:
Explanation:
When configuring mLACP for Server Access, follow these guidelines and restrictions:
PFC3A mode does not support the mLACP for server access feature.
VSS mode does not support the mLACP for server access feature.
No more than 100 VLANs can be active on a switch configured as a PoA.
mLACP does not support half-duplex links.
mLACP does not support multiple neighbors.
Converting a port channel to mLACP can cause a service disruption.
The DHD system priority must be lower (higher numerically) than the PoA system priority.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/mla cp_server_support.html
QUESTION 96
What is the maximum number of 10 Gigabit Ethernet connections that can be utilized in an EtherChannel for the virtual switch link?
A. 4

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cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. Both virtual switch members cease to forward traffic. and only the new active virtual switch continues to forward traffic. D. 6 C.B.com/ . Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: Q.exam.2(33)SXI) In the dual active recovery mode. C.html QUESTION 97 Which statement describes what happens if all VSL connections between the virtual switch members are lost? A. The virtual switch members reload. and both virtual switch members continue to forward traffic independently. The VSS transitions to the dual active recovery mode. the VSS will transition to the dual active recovery mode. Reference: http://www. The VSS transitions to the dual active recovery mode. If for some rare reason all VSL connections are lost between the virtual switch members leaving both the virtual switch members up. 8 D. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. 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. The http://www. What happens if all VSL connections between the virtual switch members are lost? A. VSLs can be configured with up to eight links between the two switches across any combination of line cards or supervisor ports to provide a high level of redundancy. B. 12 Correct Answer: C Section: [none] Explanation Explanation/Reference: 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.

html QUESTION 98 Which statement describes what happens when a switch enters dual active recovery mode? A. The VSS detects which system was last in active state and shuts down the other switch.new active virtual switch continues to forward traffic on all links. but the new active virtual switch forwards traffic on all links.exam. The switch continues to forward traffic out all links and enables spanning tree on VSL link and all other links to prevent loops.cisco.html QUESTION 99 You have been asked to install and configure a new switch in a customer network. Use the console access to the existing and new switches to configure and verify correct device configuration.cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. all interfaces except the VSL interfaces are in an operationally shut down state in the formerly active virtual switch member. D. B. Reference: http://www. The new active virtual switch continues to forward traffic on all links. C. Reference: http://www. The switch shuts down and waits for the VSL link to be restored before sending traffic. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: In the dual active recovery mode. All interfaces are shut down in the formerly active virtual switch member.com/ .com/en/US/prod/collateral/switches/ps5718/ps9336/prod_qas0900aecd806ed74 b. http://www.

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Which of the configuration is correct? http://www.com/ . the switch has been partially configured and you need to complete the rest of configuration to enable PC1 communication with PC2.You are connecting the New_Switch to the LAN topology.exam.

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Logging in to SW1 and using the "show vtp status" command we see this: http://www. E.com/ . Option A Option B Option C Option D Option E Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: Within any VTP. C.exam. B.A. step one is to find the correct VTP name on the other switches. So. D. the VTP domain name must match.

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http://www.exam. so we know that this port must be an access port in VLAN 100. This leaves only choice D and E.So we know that the VTP domain must be CCNP.com/ . QUESTION 100 You have been asked to install and configure a new switch in a customer network. We also see from the topology diagram that eth 0/0 of the new switch connects to a PC in VLNA 100. 3 so either VTP version 2 or 3 can be configured on the new switch. leaving only choice D as correct. 2. Use the console access to the existing and new switches to configure and verify correct device configuration. Note that the VTP versions supported in this network are 1.

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VLAN1 VLAN 99 VLAN 999 VLAN 40 VLAN 50 http://www.exam. For which configured VLAN are untagged frames sent over trunk between SW1 and SW2? A.com/ .Refer to the configuration. D. C. E. B.

http://www.com/ . VLAN 200 G.exam. By issuing the "show interface trunk" command on SW1 and SW2 we see the native VLAN is 99.F. VLAN 300 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: The native VLAN is used for untagged frames sent along a trunk.

com/ .QUESTION 101 You have been asked to install and configure a new switch in a customer network. Use the console access to the existing and new switches to configure and verify correct device configuration.exam. http://www.

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SW2 and SW4 http://www.You are adding new VLANs. VLAN500 and VLAN600 to the topology in such way that you need to configure SW1 as primary root for VLAN 500 and secondary for VLAN 600 and SW2 as primary root for VLAN 600 and secondary for VLAN 500. C. Configure VLAN 500 & VLAN 600 on both SW1 & SW2 Configure VLAN 500 and VLAN 600 on SW1 only Configure VLAN 500 and VLAN 600 on SW2 only Configure VLAN 500 and VLAN 600 on SW1 .exam. D. Which configuration step is valid? A.com/ . B.

SW2. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: By issuing the "show vtp status command on SW2.E. configure back to vtp server mode. but SW4 is a client.exam. http://www.com/ . configure vtp mode as off and configure VLAN 500 and VLAN 600. and SW4 we see that both SW1 and SW2 are operating in VTP server mode. On SW2. so we will need to add both VLANs to SW1 and SW2.

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exam.QUESTION 102 You have been asked to install and configure a new switch in a customer network.com/ . Use the console access to the existing and new switches to configure and verify http://www.

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B. C.Examine the VTP configuration. SW4 and New_Switch http://www. You are required to configure private VLANs for a new server deployment connecting to the SW4 switch.exam. D. Disable VTP pruning on SW1 only Disable VTP pruning on SW2 only Disable VTP pruning on SW4 only Disable VTP pruning on SW2. Which of the following configuration steps will allow creating private VLANs? A.com/ .

QUESTION 103 Scenario: You work for SWITCH. SwitchB has a minimal configuration. only SW4 will connect to servers in a private VLAN. 21.E. but will need to be modified to support the addition of SwitchB. All other vlans should be left http://www. 12. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: To create private VLANs. Configuration Requirements for SwitchB • Vlan 21 o Name: Marketing o will support two servers attached to fa0/9 and fa0/10 • Vlan 22 o Name: Sales o will support two servers attached to fa0/13 and fa0/14 • Vlan 23 o Name: Engineering http://www. In this case.com/ are their default values. 13. You have been tasked with competing the needed configuring of SwitchA and SwitchB. Configuration Requirements for SwitchA The VTP and STP configuration modes on SwitchA should not be modified. Disable VTP pruning on New_Switch and SW4 only. SwitchA is currently configured correctly.exam. you will need to only disable pruning on the switch that contains the private VLANs.com.com/ . They have just added a new switch (SwitchB) to the existing network as shown in the topology diagram. 22 and 23. RouterA is currently configured correctly and is providing the routing function for devices on SwitchA and SwitchB.exam. • SwitchA needs to be the root switch for vlans 11. SwitchA and SwitchB use Cisco as the enable password.

1. This mode should be done with a non-proprietary protocol. • SwitchB must operate in the same spanning tree mode as SwitchA • No routing is to be configured on SwitchB • Only the SVI vlan 1 is to be configured and it is to use address 192. http://www.com/ .o will support two servers attached to fa0/15 and fa0/16 • Access ports that connect to server should transition immediately to forwarding state upon detecting the connection of a device. • Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk link.11/24 Inter-switch Connectivity Configuration Requirements • For operational and security reasons trunking should be unconditional and Vlans 1.168. • The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all vlans. 22 and 23 should tagged when traversing the trunk link. 21.exam. • SwitchB VTP mode needs to be the same as SwitchA. with SwitchA controlling activation.

exam.21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1.21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! interface FastEthernet0/9 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/10 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/13 switchport access vlan 22 http://www.com/ .Correct Answer: Answer: Here are steps: Section: [none] Explanation Explanation/Reference: hostname SWITCH_B ! ! vlan 21 name Marketing vlan 22 name Sales vlan 23 name Engineering ! ! interface FastEthernet0/3 switchport trunk allowed vlan 1.

168.255.0 ! end SWITCH_B(config)# hostname SWITCH_A ! panning-tree vlan 11 root primary spanning-tree vlan 12 root primary spanning-tree vlan 13 root primary spanning-tree vlan 21 root primary spanning-tree vlan 22 root primary spanning-tree vlan 23 root primary http://www.switchport mode access spanning-tree portfast ! ! interface FastEthernet0/14 switchport access vlan 22 switchport mode access spanning-tree portfast ! interface FastEthernet0/15 switchport access vlan 23 switchport mode access spanning-tree portfast ! interface FastEthernet0/16 switchport access vlan 23 switchport mode access spanning-tree portfast ! ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 switchport mode trunk switchport trunk encapsulation dot1q spanning-tree allowed vlans 1.21-23 ! interface Vlan1 ip address 192.11 255.1.com/ .255.exam.

168.! interface FastEthernet0/3 switchport trunk allowed vlan 1.exam.com/ .21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/21 switchport access vlan 21 switchport mode access ! interface FastEthernet0/22 switchport access vlan 22 switchport mode access ! interface FastEthernet0/23 switchport access vlan 23 switchport mode access ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 ! interface Vlan1 no ip address shutdown ! ip default-gateway 192.1. which has a partial configuration http://www.21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1.1 ! ! End QUESTION 104 You have been tasked with configuring multilayer SwitchC.

All routes must be learned via the EIGRP routing protocol. You need to configure SwitchC so that Hosts H1 and H2 can successfully ping the server S1. Routed interfaces should use the lowest host on a subnet when possible. http://www. RouterC is correctly configured.200.200.250.0/24 – 190. Company policies forbid the use of static or default routing. All routes must be learned via EIGRP 65010 routing protocol.64/27 Hosts H1 and H2 are configured with the correct IP address and default gateway. changes VLAN port assignments or create trunks.32/27 – 190.com/ . You do not have access to RouteC.10. Also SwitchC needs to be able to ping server S1. Company policies forbid the use of static or default routing.10.exam. Note: Due to administrative restrictions and requirements you should not add or delete VLANs. The following subnets are available to implement this solution: – 10.250.and has been attached to RouterC as shown in the topology diagram. Due to administrative restrictions and requirements you should not add/delete vlans or create trunk links. No trunking has been configured on RouterC. Routing must only be enabled for the specific subnets shown in the diagram. SwitchC uses Cisco as the enable password.

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No trunking requires.com/ . SwitchC should be configured as a Layer 3 switch (which supports ip routing function as a router). + Only use SwitchC for interVLAN routing without using RouterC. http://www. The question clearly states “No trunking has been configured on RouterC” so RouterC does not contribute to interVLAN routing of hosts H1 & H2 -> SwitchC must be configured as a Layer 3 switch with SVIs for interVLAN routing.Correct Answer: Answer: There are two ways to configure interVLAN routing in this case: Section: [none] Explanation Explanation/Reference: + Use RouterC as a “router on a stick” and SwitchC as a pure Layer2 switch.exam. Trunking must be established between RouterC and SwitchC.

1 so this is the lowest usable IP address.0 ->RouterC has used IP 10.250.200. we are pretty sure instead of using two commands “network 190.200. so you will not miss within it in the exam. In fact. in fact it is not necessary because the network 190.250.0.0.65 255.250.0. also don’t modify/delete any port just do the above configuration.255.0 0.200.0.10.200. SwitchC(config-if)# no shutdown SwitchC(config-if)# exit SwitchC(config)# int vlan 2 SwitchC(config-if)# ip address 190.32 0.We should check the default gateways on H1 & H2.255. the simulator does not let you assign IP address on Gi0/1 interface. no neighbor relationship is formed between RouterC and SwitchC. Also some reports said the “no auto-summary” command can’t be used in the simulator.200. you should expect the ping to SERVER to succeed from the MLS.0.250. In order to complete the lab. Also make sure you use the correct EIGRP AS number (in the configuration above it is 650 but it will change when you take the exam) but we are not allowed to access RouterC so the only way to find out the EIGRP AS is to look at the exhibit above.33 Host2: + Default gateway: 190.224 SwitchC(config-if)# no shutdown SwitchC(config-if)# int vlan 3 SwitchC(config-if)# ip address 190.250.0.10.10.31″ http://www.64 0.200.exam.31 SwitchC(config-router)# network 190.224 SwitchC(config-if)# no shutdown SwitchC(config-if)#exit SwitchC(config)# ip routing (Notice: MLS will not work without this command) SwitchC(config)# router eigrp 65010 SwitchC(config-router)# network 10. Click on H1 and H2 and type the “ipconfig” command to get their default gateways.255.65 Now we have enough information to configure SwitchC (notice the EIGRP AS in this case is 650) Note: VLAN2 and VLAN3 were created and gi0/10.200.33 255. and from the PCs as well.31 NOTE: THE ROUTER IS CORRECTLY CONFIGURED.10.200.250. SwitchC(config-if)# ip address 10.255 SwitchC(config-router)# network 190.2 255.10.0.255.10. gi0/11 interfaces were configured as access ports so we don’t need to configure them in this sim. If you use wrong AS number.255. SwitchC# configure terminal SwitchC(config)# int gi0/1 SwitchC(config-if)#no switchport -> without using this command.0.com/ . C:###BOT_TEXT###gt;ipconfig We will get the default gateways as follows: Host1: + Default gateway: 190.255.250.32 0.0/16 is not used anywhere else in this topology.0.

64 0.and “network 190. But after finishing the configuration.200.0. even without “no auto-summary” command the network still works correctly.0″ because it is the nature of distance vector routing protocol like EIGRP: only major networks need to be advertised.0 is shown.200.0. just for sure.250. http://www.0.0.200. only the summarized network 190.exam.31″ we can use one simple command “network 190. But in the exam the sim is just a flash based simulator so we should use two above commands. we can use “show run” command to verify.com/ .

D. What is the solution to avoid the snooping database from being rebuilt after every device reboot? A.2SX/configuration/guide/sno odhcp. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Minimum DHCP Snooping Configuration The minimum configuration steps for the DHCP snooping feature are as follows: 1. A DHCP snooping database agent should be configured. By default. Ensure that DHCP server is connected through a trusted interface. Apply ip dhcp snooping trust on all interfaces with dynamic addresses. DHCP snooping is inactive on all VLANs. E. C. 2. D. Configure the DHCP snooping database agent. 3. By default. Define and configure the DHCP server. C. Enable DHCP snooping globally. Enable DHCP snooping on at least one VLAN. B. B. 5. Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting. 4. Reference: http://www.cisco.Question Set 1 QUESTION 1 A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database.exam.com/ . the trust state of all interfaces is untrusted. Enable DHCP snooping for all VLANs that are associated with the switch. This step ensures that database entries are restored after a restart or switchover.com/en/US/docs/switches/lan/catalyst6500/ios/12. The feature is not active until you complete this step.html#wp1090479 QUESTION 2 Which portion of AAA looks at what a user has access to? A. authorization authentication accounting auditing Correct Answer: A http://www. Disable Option 82 for DHCP data insertion.

B. which would be specific to the individual user rights. you can define AAA authorization with a named list or authorization method. http://www.exam.configure-it-in-the-cisco-ios/ QUESTION 3 Which command creates a login authentication method named "login" that will primarily use RADIUS and fail over to the local user database? A. you could get a log of when users logged in and when they logged out. with accounting. C. D. Which solution ensures that the server maintains network reachability in the future? A. so it will primarily use RADIUS for authentication and fail over to the local user database only if the RADIUS server is unreachable. Depending on your security options. RADIUS or TACACS+ security servers perform authorization for specific privileges by defining attribute-value (AV) pairs. Disable DHCP snooping information option. Reference: http://www. (config)# aaa authentication login default radius local (config)# aaa authentication login login radius local (config)# aaa authentication login default local radius (config)# aaa authentication login radius local Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: In the command "aaa authentication login login radius local" the second login is the name of the AAA method. You can use accounting to see what users do once they are authenticated and authorized. It also lists radius first then local.com/blog/data-center/what-is-aaa-and-how-do-you.Section: [none] Explanation Explanation/Reference: 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.techrepublic. It provides a way of collecting security information that you can use for billing. it can also support encryption. Authorization: After initial authentication. For more protection against malicious attacks. Configure a static DHCP snooping binding entry on the switch. In the Cisco IOS. the network team is considering enabling dynamic ARP inspection alongside DHCP snooping. For example.com/ . QUESTION 4 A server with a statically assigned IP address is attached to a switch that is provisioned for DHCP snooping. authorization looks at what that authenticated user has access to do. B. Accounting: The last "A" is for accounting. auditing. and reporting.

D. Private VLANs are configured in the context of a single switch and cannot have members on other switches. Private VLANs also carry TLVs that are not known to all types of Cisco switches. and discards ARP packets with invalid IP-to-MAC address bindings.ciscopress. Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: You must configure VTP to transparent mode before you can create a private VLAN. D. B. Ensure all switches are configured as VTP server mode.address command.2_55_se/configuration/guide/scg3750/swdynarp. This capability protects the network from certain man-in-the-middle attacks.cisco. the switch forwards the packet without any checks. 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.exam. logs. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. configure a static DHCP snooping binding entry on the switch. It intercepts. the DHCP snooping binding database. Disable VTP and manually assign VLANs. To ensure network reachability to the server.html QUESTION 5 A network engineer wants to ensure Layer 2 isolation of customer traffic using a private VLAN. C. the switch forwards the packet only if it is valid. On untrusted interfaces. 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.asp?p=29803&seqNum=6 http://www.com/ . Which configuration must be made before the private VLAN is configured? A. Reference: http://www. Enable VTP version 3.C. Dynamic ARP inspection ensures that only valid ARP requests and responses are relayed.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12. Trust the interface that is connected to the server with the ip dhcp snooping trust command.com/articles/ article. If the ARP packet is received on a trusted interface. Configure VTP Transparent Mode. Reference: http://www. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: Dynamic ARP inspection is a security feature that validates ARP packets in a network. Verify the source MAC address of all untrusted interfaces with ip dhcp snooping verify mac.

or with source IP and MAC address filtering. Reference: http://www. D. C. 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. Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). B.html#ipsourceguard QUESTION 7 A DHCP configured router is connected directly to a switch that has been provisioned with DHCP snooping. The DHCP server does not support information option 82. even if they are not utilized for dynamic address allocation.com/c/en/us/support/docs/switches/catalyst-3750-series. When IP source guard is enabled with this option. Static DHCP bindings are not configured on the switch. The switch forwards traffic only when the source IP and MAC addresses match an entry in the IP source binding table.com/ . When IP source guard is enabled with this option. Packets from the workstation will be rate limited according to the default values set on the switch. If there is no match. IP traffic is filtered based on the source IP and MAC addresses. An entry in this table has an IP address. The packets originating from the workstation are assumed to be spoofed and will be discarded. You can configure IP source guard with source IP address filtering. B. Which option is the cause of this issue? A. its associated MAC address.exam.switches/72846-layer2-secftrs-catl3fixed.cisco. Correct Answer: A Section: [none] Explanation Explanation/Reference: http://www. The interface that is connected to the workstation in question will be put into the errdisabled state. the packets are assumed to be spoofed and will be discarded. and its associated VLAN number. clients are not receiving an IP address via the DHCP server.QUESTION 6 DHCP snooping and IP Source Guard have been configured on a switch that connects to several client workstations. Traffic will pass accordingly after the new IP address is populated into the binding database. DHCP snooping must be enabled on all VLANs. C. Which statement describes the outcome of this scenario? A. The IP address of one of the workstations does not match any entries found in the DHCP binding database. IP traffic is filtered based on the source IP address. D. The switch uses the IP source binding table only when IP source guard is enabled. The DHCP client interfaces have storm control configured. 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. However.

IP source guard is supported only on Layer 2 ports. The MAC address in the DHCP packet is not learned as a secure address. B.cisco. A port access control list (ACL) is applied to the interface.html#wp1069615 QUESTION 8 A switch is added into the production network to increase port capacity. The switch uses the IP source binding table only when IP source guard is enabled. The switch is configured for sdm prefer routing as the switched database management template. including access and trunk ports.security interface configuration command.2_25_see/configuration/guide/3550SCG/ swdhcp82. E. except for DHCP packets allowed by DHCP snooping.Explanation: When you enable both IP Source Guard and Port Security.cisco.exam. The IP source binding table has bindings that are learned by DHCP snooping or are manually configured (static IP source bindings). using the ip verify source port. D. A network engineer is configuring the switch for DHCP snooping and IP Source Guard. The MAC address of the DHCP client is learned as a secure address only when the switch receives non-DHCP data traffic. An entry in this table has an IP address. The port ACL allows only IP traffic with a source IP address in the IP source binding table and denies all other traffic. You can enable IP source guard when DHCP snooping is enabled on an untrusted interface. You can configure IP source guard with source IP address filtering or with source IP and MAC address filtering. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12. Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: IP source guard is a security feature that restricts IP traffic on nonrouted. Which option is the cause of the problem? A.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12.) http://www. the switch blocks all IP traffic received on the interface.html#wp1069615 QUESTION 9 The command storm-control broadcast level 75 65 is configured under the switch port connected to the corporate mail server.2_25_see/configuration/guide/3550SCG/ swdhcp82. After IP source guard is enabled on an interface. there are two caveats: The DHCP server must support option 82. but is unable to configure ip verify source under several of the interfaces. its associated MAC address. The interfaces are configured as Layer 3 using the no switchport command. C. The local DHCP server is disabled prior to enabling IP Source Guard. Layer 2 interfaces by filtering traffic based on the DHCP snooping binding database and on manually configured IP source bindings. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor. In which three ways does this command impact the traffic? (Choose three. The configured SVIs on the switch have been removed for the associated interfaces. or the client is not assigned an IP address. Reference: http://www.com/ . and its associated VLAN number. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode.

http://www. The switch drops broadcasts when they reach 75% of bandwidth.00.com/c/en/us/td/docs/switches/lan/catalyst3550/ software/release/12. In this case. The switchport is disabled when unicast traffic reaches 75% of the total interface bandwidth. The switch resumes forwarding broadcasts when they are below 65% of bandwidth.Configure broadcast.exam. The range is 0. The port forwards traffic when traffic drops below this level. This value must be less than or equal to the rising suppression value. F. or unicast traffic as a percentage (up to two decimal places) of the bandwidth. E. B. C.exam. They decide to configure the http://www. Reference: http://www.00 to 100. cast} level {level [levThe keywords have these meanings: el-low] | pps pps [ppslow]} For level.com/ A.html QUESTION 10 After port security is deployed throughout an enterprise campus. If you do not configure a falling suppression level. The range is 0.2_25_see/configuration/guide/3550SCG/swtrafc. it is set to the rising suppression level.00 to 100. the broadcast keyword was used so only broadcast traffic is limited.com/ . multicast. the network team has been overwhelmed with port reset requests. SNMP traps are sent by default when broadcast traffic reaches 65% of the lower-level threshold. or unicast storm control.cisco. Only broadcast traffic is limited by this particular storm control configuration. specify the falling threshold level as a percentage (up to two decimal places) of the bandwidth. Correct Answer: CDF Section: [none] Explanation Explanation/Reference: Explanation: storm-control {broad. multicast. The port blocks traffic when the rising threshold is reached. Multicast traffic is dropped at 65% and broadcast traffic is dropped at 75% of the total interface bandwidth. By de. storm control is disabled.00.cast | multicast | uni. specify the rising threshold level for broadcast.fault. (Optional) For level-low. D.

) A. 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. E. D. E. you can also use clear errdisable interface name vlan range command to re-enable the VLAN on the port.network to automate the process of re-enabling user ports. 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. C.com/c/en/us/td/docs/switches/lan/catalyst4500/12. Which two commands help trace this PC when the MAC address is known? (Choose two. D. Here is an example output: Switch> show mac-address-table http://www. This is the default mode.cisco. Which command accomplishes this task? A. C.pdf QUESTION 11 The network monitoring application alerts a network engineer of a client PC that is acting as a rogue DHCP server. including the switch port that the particular host is using. Reference: http://www. If a port is in per-VLAN errdisable mode. switch# show mac address-table switch# show port-security switch# show ip verify source switch# show ip arp inspection switch# show mac address-table address <mac address> Correct Answer: AE Section: [none] Explanation Explanation/Reference: Explanation: These two commands will show the MAC address table. B.exam.2/53SG/configuration/config/port_sec. B. switch(config)# errdisable recovery interval 180 switch(config)# errdisable recovery cause psecure-violation switch(config)# switchport port-security protect switch(config)# switchport port-security aging type inactivity switch(config)# errdisable recovery cause security-violation Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: When a secure port is in the error-disabled state.com/ .

cisco. or users issuing a denial-of-service attack can cause a storm. Storm control is configured for the switch as a whole but operates on a per-port basis. B.e289 Dynamic 1 FastEthernet0/1 0010. mistakes in network configuration. C.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 ------------------.html QUESTION 13 Which command globally enables AAA on a device? A.-----------.0010.exam. aaa new-model B.0de0. E. or unicast storm on a port.-------------------. You can also set the switch to shut down the port when the rising threshold is reached.com/ .7b00. a network engineer discovered an unusually high level of broadcast traffic coming from one of the switch interfaces. or multicast packets.1540 Dynamic 2 FastEthernet0/5 0010. storm control SDM routing Cisco IOS parser integrated routing and bridging Dynamic ARP Inspection Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Storm control prevents traffic on a LAN from being disrupted by a broadcast.---.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12. By default. Storm control uses rising and falling thresholds to block and then restore the forwarding of broadcast. storm control is disabled. aaa authentication http://www. Which option decreases consumption of bandwidth used by broadcast traffic? A. Errors in the protocol-stack implementation.1_22ea/SCG/scg/swtrafc. multicast. unicast. Reference: http://www.1545 Dynamic 2 FastEthernet0/5 QUESTION 12 While troubleshooting a network outage.7b00. creating excessive traffic and degrading network performance. D. A LAN storm occurs when packets flood the LAN.

B. This can include a PPP.com/ . This process continues until there is successful communication with a listed authorization method.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathen. C.cisco. enable AAA by using the aaa new-model global configuration command. http://www. thus ensuring a backup system in case the initial method fails. Commands--Applies to the EXEC mode commands a user issues. and ARAP connections? A. aaa accounting Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: To configure AAA authentication. ·Network--Applies to network connections. aaa authorization D. Command authorization attempts authorization for all EXEC mode commands.C. the Cisco IOS software selects the next method listed in the method list. Method lists are specific to the authorization type requested: Auth-proxy--Applies specific security policies on a per-user basis. or all methods defined are exhausted. SLIP. Cisco IOS software uses the first method listed to authorize users for specific network services. including global configuration commands. SLIP. Reference: http://www. For detailed information on the authentication proxy feature. EXEC--Applies to the attributes associated with a user EXEC terminal session. refer to the chapter "Configuring Authentication Proxy" in the "Traffic Filtering and Firewalls" part of this book. AAA features are not available for use until you enable AAA globally by issuing the aaa new-model command. A method list is simply a named list describing the authorization methods to be queried (such as RADIUS or TACACS+).exam. in sequence. D. if that method fails to respond. or ARAP connection. associated with a specific privilege level. Method lists enable you to designate one or more security protocols to be used for authorization. network IP mobile EXEC auth-proxy Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Method lists for authorization define the ways that authorization will be performed and the sequence in which these methods will be performed.ht ml QUESTION 14 Which AAA Authorization type includes PPP.

The Remote Authentication Dial-In User Service (RADIUS) security system with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathor.exam.com/ . Reference: http://www. the authentication server--performs the actual authentication of the client.Reverse Access--Applies to reverse Telnet sessions. http://www. When you create a named method list.cisco.1_19_ea1/configuration/guide/2940scg_1/sw8021x. the authentication service is transparent to the client.cisco. RADIUS with EAP Extension TACACS+ RADIUS with CoA RADIUS using VSA Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: With 802. B. The authentication server validates the identity of the client and notifies the switch whether or not the client is authorized to access the LAN and switch services. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst2940/software/release/12. Because the switch acts as the proxy.1x? A. you are defining a particular list of authorization methods for the indicated authorization type. C.pdf QUESTION 16 Refer to the exhibit. D.1x.ht ml QUESTION 15 Which authentication service is needed to configure 802.

which lists none as the authentication method. C. none required username cisco with password cisco no username with password linepass login authentication default Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Here the console has been configured with the NO_AUTH name.Which login credentials are required when connecting to the console port in this output? A. D. B. meaning that credentials are not required and all sessions are allowed access immediately.exam. http://www. None means no authentication. QUESTION 17 Refer to the exhibit.com/ .

com/ . RADIUS server Line password. local username Line password. Finally. local username. RADIUS server. local username Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: SSH sessions use the vty lines.When a network administrator is attempting an SSH connection to the device. QUESTION 18 Which type of information does the DHCP snooping binding database contain? A. line password. where the configured authentication method is named "default. D. B.exam." The AAA default login preference is stated in order from first to last. then if that fails use the local user database. C. local username. in which order does the device check the login credentials? A. if that fails use the line password. untrusted hosts with leased IP addresses B. trusted hosts with leased IP addresses C. line password RADIUS server. untrusted hosts with available IP addresses http://www. RADIUS server. so here the "aaa authentication login default group radius local line" means to use RADIUS first.

com/c/en/us/support/docs/switches/catalyst-3750-series.html QUESTION 20 Which command is needed to enable DHCP snooping if a switchport is connected to a DHCP server? A. the switch forwards the packet without any checks.switches/72846-layer2-secftrs-catl3fixed.cisco. · Builds and maintains the DHCP snooping binding database. C. If the ARP packet is received on a trusted interface. trusted hosts with available IP addresses Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers.cisco.2SX/configuration/guide/book/snoodhcp. Dynamic ARP Inspection storm control VTP pruning DHCP snooping Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database. The DHCP snooping feature performs the following activities: Validates DHCP messages received from untrusted sources and filters out invalid messages.pdf QUESTION 19 Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database? A.D. which contains information about untrusted hosts with leased IP addresses. D. On untrusted interfaces. the DHCP snooping binding database.com/ . the switch forwards the packet only if it is valid. B. Rate-limits DHCP traffic from trusted and untrusted sources. Reference: http:// www. This database is built by DHCP snooping if DHCP snooping is enabled on the VLANs and on the switch. Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. ip dhcp snooping http://www.exam. ip dhcp snooping trust B.

configure the port as untrusted by entering the no ip dhcp snooping trust interface configuration command. Before globally enabling DHCP snooping on the switch. ip dhcp trust D.2SX/configuration/guide/book/snoodhcp. Isolated--An isolated port is a host port that belongs to an isolated secondary VLAN. ip dhcp snooping information Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: When configuring DHCP snooping. D. as long as the promiscuous port and secondary VLANs are within the same primary VLAN. The promiscuous port can communicate with all interfaces. Reference: http://www. follow these guidelines: DHCP snooping is not active until you enable the feature on at least one VLAN. and enable DHCP globally on the switch. This port has complete isolation from other ports within the same private VLAN domain.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12. including the community and isolated host ports? A. If a Layer 2 LAN port is connected to a DHCP server. make sure that the devices acting as the DHCP server and the DHCP relay agent are configured and enabled.C. Each promiscuous port can have several secondary VLANs. You may want to do this for load-balancing or redundancy purposes. that belong to those secondary VLANs associated to the promiscuous port and associated with the primary VLAN. C. You can have more than one isolated port in a specified http://www. Private VLANs block all traffic to isolated ports except traffic from promiscuous ports.cisco. You can associate a secondary VLAN to more than one promiscuous port.com/ . or no secondary VLANs. except that it can communicate with associated promiscuous ports. associated to that port.html QUESTION 21 Which private VLAN access port belongs to the primary VLAN and can communicate with all interfaces.exam. including the community and isolated host ports. If a Layer 2 LAN port is connected to a DHCP client. You can have several promiscuous ports in a primary VLAN. promiscuous port isolated port community port trunk port Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: The types of private VLAN ports are as follows: Promiscuous--A promiscuous port belongs to the primary VLAN. configure the port as trusted by entering the "ip dhcp snooping trust" interface configuration command. B. Traffic received from an isolated port is forwarded only to promiscuous ports. You can also have secondary VLANs that are not associated to any promiscuous port.

C.exam.cisco. and Community Private VLANs Primary VLANs and the two types of secondary VLANs (isolated and community) have these characteristics: Primary VLAN-. B. and the traffic from each isolated port also remains completely separate.com/ .cisco. The ports within one community can communicate. both isolated and community.The primary VLAN carries traffic from the promiscuous ports to the host ports. Reference: http://www. D. You can configure multiple community VLANs in a private VLAN domain. Each isolated VLAN can have several isolated ports. Community ports communicate with other ports in the same community VLAN and with associated promiscuous ports. Isolated VLAN --An isolated VLAN is a secondary VLAN that carries unidirectional traffic upstream from the hosts toward the promiscuous ports. You can configure multiple isolated VLANs in a private VLAN domain. Community--A community port is a host port that belongs to a community secondary VLAN.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/ CLIConfigurationGuide/PrivateVLANs.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/ CLIConfigurationGuide/PrivateVLANs. and to other promiscuous ports. isolated VLAN primary VLAN community VLAN promiscuous VLAN Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Understanding Primary. all the traffic remains isolated within each one. These interfaces are isolated from all other interfaces in other communities and from all isolated ports within the private VLAN domain. Reference: http://www.isolated VLAN. DHCP snooping database B. Isolated. dynamic routing database http://www. but these ports cannot communicate with ports in any other community or isolated VLAN in the private VLAN. Each port is completely isolated from all other ports in the isolated VLAN. 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.html QUESTION 22 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.html QUESTION 23 Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding? A. dynamic ARP database C.

DHCP snooping storm control spanning-tree portfast private VLAN Correct Answer: A Section: [none] Explanation Explanation/Reference: http://www. This database is built by DHCP snooping when it is enabled on the VLANs and on the device. Drops invalid ARP packets. DAI can determine the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database. static ARP database Correct Answer: A Section: [none] Explanation Explanation/Reference: 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. Verifies that a packet has a valid IP-to-MAC address binding before updating the ARP cache or forwarding the packet.com/ A.com/ .exam. D. B. It may also contain static entries that you have created. C.exam. which feature must be enabled on the access VLAN for that interface? http://www.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.D.cisco.html QUESTION 24 When IP Source Guard with source IP filtering is enabled on an interface. Reference: http://www.

Reference:http://3c3cc. If you enter the ip source binding mac-address vlan vlan-id ip-address interface interface-id global configuration command on a routed interface. Reference: http://www.pdf QUESTION 26 Which command would a network engineer apply to error-disable a switchport when a packet. D. storm control port security VTP pruning VLAN trunking Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: A traffic storm occurs when packets flood the LAN. If you are enabling IP source guard on a trunk interface with multiple VLANs and DHCP snooping is enabled on all the VLANs. C. this error message appears: Static IP source binding can only be configured on switch port. C. or unicast traffic storm on physical interfaces from either mistakes in network configurations or from users issuing a DoS attack.com/c/en/us/td/docs/routers/7600/ios/122SR/configuration/guide/swcg/do s.html QUESTION 25 Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic? A. When IP source guard with source IP filtering is enabled on an interface. D.0_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960.com/c/en/us/td/docs/switches/lan/catalyst2960x/ software/15. You can enable this feature when 802.exam.Explanation: IP Source Guard Configuration Guidelines You can configure static IP bindings only on nonrouted ports. the source IP address filter is applied on all the VLANs. router(config-if)#storm-control action shutdown router(config-if)#storm-control action trap router(config-if)#storm-control action error router(config-if)#storm-control action enable Correct Answer: A Section: [none] Explanation http://www. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast. B.1x port-based authentication is enabled.com/ . DHCP snooping must be enabled on the access VLAN for that interface. which creates excessive traffic and degrades network performance. multicast. B.cisco.storm is detected? A.x_cg_chapter_01110.

http://www.1x authenticates. 802.cisco. It allows port security to secure the IP address that 802.1x to secure the IP address that port security authenticates. Reference: http://www.1x to secure the MAC address that port security authenticates.1x on the same interface.com/ . It allows port security to secure the MAC address that 802. Which option describes what this configuration allows? A. · Enter the no storm-control action shutdown command to revert to the default action (drop). Port security secures the MAC addresses that 802. D. Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: 802. slot/port} | {port-channel number}} Step 2 Router(config-if)# storm-control (Optional) Configures traffic storm control to action shutdown error-disable ports when a traffic storm occurs.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12.1X is already preventing inbound traffic on the interface from unknown MAC addresses.1X and Port Security You can configure port security and 802.html QUESTION 27 A network engineer configures port security and 802. · Use the error disable detection and recovery feature. or the shutdown and no shutdown commands to reenable ports. It allows 802.1x authenticates.1X authenticates.Explanation/Reference: Explanation: Configuring the Traffic Storm Control Shutdown Mode To configure the traffic storm control shutdown mode on an interface.2SX/configuration/guide/book/storm. 802.1X on the same interfaces. C. so when you enable both on an interface.1X processes packets before port security processes them. B. perform this task: Command Purpose Step 1 Router(config)# interface {{type1 Selects an interface to configure. It allows 802.exam.

the interface does not need to dynamically relearn them when the switch restarts. C. stored in the address table. The device allows VLAN maximums only for VLANs associated with the trunk port.2/25ew/configuration/guide/conf/port_sec. B. If these addresses are saved in the configuration file.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx.com/ . sticky dynamic static secure Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: With port security. it is not recommended.cisco. These can be dynamically learned or manually configured.Reference: http://www. and added to the running configuration. stored in the address table. Reference: http://www. B. you can configure MAC addresses to be sticky.html QUESTION 28 Which feature describes MAC addresses that are dynamically learned or manually configured. C. port security applies only to the access VLAN.os/security/configuration/guide/sec_nx-os-cfg/sec_portsec. http://www. static trunk ports destination port for SPAN EtherChannel port group dynamic access point Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: Port Security and Port Types You can configure port security only on Layer 2 interfaces. On an access port. VLAN maximums are not useful for access ports. 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. and added to the running configuration? A. D. D.exam.pdf QUESTION 29 On which interface can port security be configured? A.com/c/en/us/td/docs/switches/lan/catalyst4500/12. Trunk ports--You can configure port security on interfaces that you have configured as Layer 2 trunk ports.cisco. Although sticky secure addresses can be manually configured.

Promiscuous port (P-Port): The switch port connects to a router.SPAN ports--You can configure port security on SPAN source ports but not on SPAN destination ports. B.html QUESTION 30 When you configure private VLANs on a switch. promiscuous community isolated trunked Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. o Community Port (C-Port): Connects to the regular host that resides on community VLAN. B.exam. D. Host Ports: o Isolated Port (I-Port): Connects to the regular host that resides on isolated VLAN. which type of port must you configure the gateway router port as? A.org/wiki/Private_VLAN QUESTION 31 When you configure a private VLAN.cisco.wikipedia.com/ . Reference: http://www. D. Reference: http://en. Ethernet Port Channels--Port security is not supported on Ethernet port channels. promiscuous port isolated port community port access port Correct Answer: A Section: [none] Explanation http://www.os/security/configuration/guide/sec_nx-os-cfg/sec_portsec.com/c/en/us/td/docs/switches/datacenter/sw/4_1/ nx. This port communicates with P-Ports and ports on the same community VLAN. which port type connects the switch to the gateway router? A. This port communicates only with P-Ports. In other words. firewall or other common gateway device. C. C. it is a type of a port that is allowed to send and receive frames from any other port on the VLAN. This port can communicate with anything else connected to the primary or any secondary VLAN. Host port further divides in two types Isolated port (I-Port) and Community port (C-port).

120.120. Host Ports: o Isolated Port (I-Port): Connects to the regular host that resides on isolated VLAN.com/ . VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server. o Community Port (C-Port): Connects to the regular host that resides on community VLAN.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches. · Devices on VLAN 20 are restricted to the subnet of 172. firewall or other common gateway device. For security reasons.40. DSW1 and ASW1. it is necessary to restrict access to VLAN 20 in the following manner: · Users connecting to VLAN 20 via portfO/1 on ASW1 must be authenticated before they are given access to the network. This port can communicate with anything else connected to the primary or any secondary VLAN. This port communicates only with P-Ports. Reference: http://en. http://www.wikipedia. You must use the available IOS switch features. · Packets from devices in any other address range should be dropped on VLAN 20. Host port further divides in two types Isolated port (I-Port) and Community port (C-port).0/24. · Filtering should be implemented as close to the serverfarm as possible. Authentication is to be done via a Radius server: · Radius server host: 172.46 · Radius key: rad123 · Authentication should be implemented as close to the host as possible. · Packets from devices in the subnet of 172.exam. In other words. You have been tasked with implementing the above access control as a pre-condition to installing the servers.org/wiki/Private_VLAN QUESTION 32 SIMULATION SWITCH. The topology diagram indicates their layer 2 mapping. The Radius server and application servers will be installed at a future date.0/24 should be allowed on VLAN 20. This port communicates with P-Ports and ports on the same community VLAN.40. it is a type of a port that is allowed to send and receive frames from any other port on the VLAN.40.Explanation/Reference: Explanation: There are mainly two types of ports in a Private VLAN: Promiscuous port (P-Port) and Host port. Corporate polices do not allow layer 3 functionality to be enabled on the switches.120. Promiscuous port (P-Port): The switch port connects to a router.

com/ .exam.http://www.

http://www.exam.com/ .

Correct Answer: Section: [none] Explanation Explanation/Reference: Answer: The configuration: Step1: Console to ASW1 from PC console 1 http://www. B.exam.A.com/ . C. D.

com/ .ASW1(config)#aaa new-model ASW1(config)#radius-server host 172.46 key rad123 ASW1(config)#aaa authentication dot1x default group radius ASW1(config)#dot1x system-auth-control ASW1(config)#inter fastEthernet 0/1 ASW1(config-if)#switchport mode access ASW1(config-if)#dot1x port-control auto ASW1(config-if)#exit ASW1#copy run start Step2: Console to DSW1 from PC console 2 DSW1(config)#ip access-list standard 10 DSW1(config-ext-nacl)#permit 172.120.exam.39.0 0.255 DSW1(config-ext-nacl)#exit DSW1(config)#vlan access-map PASS 10 DSW1(config-access-map)#match ip address 10 DSW1(config-access-map)#action forward DSW1(config-access-map)#exit DSW1(config)#vlan access-map PASS 20 DSW1(config-access-map)#action drop DSW1(config-access-map)#exit DSW1(config)#vlan filter PASS vlan-list 20 http://www.0.0.40.120.

The Radius server and application servers will be installed at a future date. http://www. • Filtering should be implemented as close to the serverfarm as possible.40.0/24 should be allowed on VLAN 20. For security reasons.exam. it is necessary to restrict access to VLAN 20 in the following manner: • Users connecting to VLAN 20 via portfO/1 on ASW1 must be authenticated before they are given access to the network. • Packets from devices in the subnet of 172.120.40. • Packets from devices in any other address range should be dropped on VLAN 20. • Devices on VLAN 20 are restricted to the subnet of 172.46 • Radius key: rad123 • Authentication should be implemented as close to the host as possible. You must use the available IOS switch features.40. Authentication is to be done via a Radius server: • Radius server host: 172.com is an IT company that has an existing enterprise network comprised of two layer 2 only switches. Corporate polices do not allow layer 3 functionality to be enabled on the switches.120. The topology diagram indicates their layer 2 mapping. VLAN 20 is a new VLAN that will be used to provide the shipping personnel access to the server. DSW1 and ASW1.0/24.com/ .120.DSW1#copy run start QUESTION 33 SWITCH. You have been tasked with implementing the above access control as a pre-condition to installing the servers.

exam.http://www.com/ .

http://www.com/ .exam.

Correct Answer: Answer: The configuration: Section: [none] Explanation Explanation/Reference: Step1: Console to ASW1 from PC console 1 ASW1(config)#aaa new-model ASW1(config)#radius-server host 172.120.exam.46 key rad123 ASW1(config)#aaa authentication dot1x default group radius ASW1(config)#dot1x system-auth-control ASW1(config)#inter fastEthernet 0/1 ASW1(config-if)#switchport mode access ASW1(config-if)#dot1x port-control auto ASW1(config-if)#exit http://www.39.com/ .

120.ASW1#copy run start Step2: Console to DSW1 from PC console 2 DSW1(config)#ip access-list standard 10 DSW1(config-ext-nacl)#permit 172.0 0.40.com/ .0.exam.255 DSW1(config-ext-nacl)#exit DSW1(config)#vlan access-map PASS 10 DSW1(config-access-map)#match ip address 10 DSW1(config-access-map)#action forward DSW1(config-access-map)#exit DSW1(config)#vlan access-map PASS 20 DSW1(config-access-map)#action drop DSW1(config-access-map)#exit DSW1(config)#vlan filter PASS vlan-list 20 DSW1#copy run start http://www.0.

C. For each interface configured for hot standby. the hot standby priority on the device on which tracking has been configured decreases by 10. If an interface is not tracked. The highest [preempt [delay delay]] number represents the highest priority.exam. D. standby group standby priority backup interface standby track Correct Answer: D Section: [none] Explanation Explanation/Reference: 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. you can configure a separate list of interfaces to be tracked.com/ . 50 100 120 1024 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: standby [group-num.com/en/US/docs/switches/lan/catalyst3550/software/release/12. Reference: http://www. D.Set a priority value used in choosing the active router. When a tracked interface fails. its state changes do not affect the hot standby priority of the configured device. C. B. the default priority is 100. B. The ber] priority priority range is 1 to 255.html QUESTION 2 What is the default HSRP priority? A.1_19_ea1/confi guration/guide/swhsrp.cisco. http://www.Question Set 1 QUESTION 1 Which configuration command ties the router hot standby priority to the availability of its interfaces? A.

cisco. (Optional) preempt--Select so that when the local router has a higher priority than the active router.onds. FHRPs allow two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes.com/ . The VSS system creates a single logical router at Layer 3. (Optional) delay--Set to cause the local router to post.lay before taking over). The VSS IP route is highly available due to MEC and the resiliency of the VSS system.1_19_ea1/confi guration/guide/swhsrp. the default is 0 (no de. C.html QUESTION 4 Which First Hop Redundancy Protocol is an IEEE Standard? A.(Optional) group-number--The group number to which the command applies. Use the no form of the command to restore the default values. it assumes control as the active router. The range is 0 to 36000 (1 hour). C. This VSS routing instance fulfills this first-hop role without the need for a dedicated protocol.pone taking over the active role for the shown number of sec. Reference: http://www. reduces cost simplifies configuration provides two independent supervisors with two different control planes removes the need for a First Hop Redundancy Protocol Correct Answer: D Section: [none] Explanation Explanation/Reference: 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. D.html#wp1044327 QUESTION 3 Which option is a benefit of using VSS? A.cisco. Reference: http://www.com/en/US/docs/switches/lan/catalyst3550/software/release/12. VSS eliminates the need for FHRP at the aggregation layer of the data center.exam. D. B. GLBP HSRP VRRP OSPF http://www. B.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate.

ip address.up to Router role 1024 virtual routers (GLBP groups) per physical interface.Use virtual ip dress. traffic. one with highest pri.1 group (Active .Can use real router .1 master router.1 active router...com/ .. the .exam. Cisco propriScope Cisco proprietary IEEE standard http://www. ..up to 4 AVF routers on the .. if not.1 or Virtual Foror more backup more listening warder) passing routers.1 standby router.Use virtual ip ad.1 AVG (Active Virtual Gateway).Correct Answer: C Section: [none] Explanation Explanation/Reference: 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 Proprotocol) Router Protocol) tocol) . ority become master. routers.address.

etary
Active Virtual
Active Router: Master Router: (*) Gateway:
1-Highest Priority 1-Highest Priority 1-Highest PriElection
2-Highest IP 2-Highest IP ority
(tiebreaker) (tiebreaker) 2-Highest IP
(tiebreaker)
Tracking yes yes yes
Optimization
Preempt yes yes yes
features
Timer adyes yes yes
justments
Traffic type 224.0.0.2 udp 1985 224.0.0.18 IP 112 224.0.0.102 udp (version1) 3222
224.0.0.102-udp 1985
(version2)
Advertisement 1 Hello 3 secHello 3 seconds
second onds
(Master Down InterTimers val)3 * Advertisement
(Hold) 10 sec+ skew time
(Hold) 10 seconds
onds
(Skew time)(256-priority) / 256
Load-balancing
orientedWeighted algo- Multiple HSRP - Multiple VRRP
rithm.- Host-degroup per in- group per inpendent algoterface/SVI/routed terface/SVI/routed
rithm.
int. int.
- Round-Robin

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algorithm (default).
Load-balancing functionalClients 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- optimal load-balancalgorithm
ing.(generally through ing.(generally through
through ARP
DHCP) DHCP)
requesting a
unique virtual
gateway.
Reference: http://cciethebeginning.wordpress.com/2008/08/23/router-high-availability-protocol- comparison-2/
QUESTION 5
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.
B.
C.
D.

1
5
10
15

Correct Answer: C
Section: [none]
Explanation
Explanation/Reference:
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. When a tracked interface fails, the hot standby priority on the device on which tracking has been configured decreases by 10. If an
interface is not tracked, its state changes do not affect the hot standby priority of the configured device. For each interface configured for hot standby, you can
configure a separate list of interfaces to be tracked.

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Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_19_ea1/confi guration/guide/swhsrp.html
QUESTION 6
What is the maximum number of virtual MAC addresses that GLBP allows per group?
A.
B.
C.
D.

2
4
6
8

Correct Answer: B
Section: [none]
Explanation
Explanation/Reference:
Explanation:
GLBP Virtual MAC Address Assignment
A GLBP group allows up to four virtual MAC addresses per group. The AVG is responsible for assigning the virtual MAC addresses to each member of the group.
Other group members request a virtual MAC address after they discover the AVG through hello messages. Gateways are assigned the next MAC address in
sequence. A virtual forwarder that is assigned a virtual MAC address by the AVG is known as a primary virtual forwarder. 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.
Reference:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1039651
QUESTION 7
Which gateway role is responsible for answering ARP requests for the virtual IP address in GLBP?
A.
B.
C.
D.

active virtual forwarder
active virtual router
active virtual gateway
designated router

Correct Answer: C
Section: [none]
Explanation
Explanation/Reference:
Explanation:
GLBP Active Virtual Gateway
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Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. Other group members provide backup for the AVG in the event
that the AVG becomes unavailable. The AVG assigns a virtual MAC address to each member of the GLBP group. Each gateway assumes responsibility for
forwarding packets sent to the virtual MAC address assigned to it by the AVG. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC
address.
The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address. Load sharing is achieved by the AVG replying to the
ARP requests with different virtual MAC addresses.
Reference: http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html
QUESTION 8
Which VRRP router is responsible for forwarding packets that are sent to the IP addresses of the virtual router?

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A.
B.
C.
D.

virtual router master
virtual router backup
virtual router active
virtual router standby

Correct Answer: A
Section: [none]
Explanation
Explanation/Reference:
Explanation:
VRRP Definitions
VRRP Router A router running the Virtual Router Redundancy Protocol. It may participate in one or more
virtual routers.
Virtual Router An abstract object managed by VRRP that acts as a default router for hosts on a shared LAN.
It consists of a Virtual Router Identifier and
a set of associated IP address(es) across a
common LAN. A VRRP Router may backup one or
more virtual routers.

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This is the router that. QUESTION 10 Which command configures an HSRP group to become a slave of another HSRP group? A. 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. Note that if the IP address owner is available. Reference: http://www. TCP connections. C. Primary IP Address An IP address selected from the set of real interface addresses. D.exam. will respond to packets addressed to one of these IP addresses for ICMP pings.txt QUESTION 9 Which command correctly configures standby tracking for group 1 using the default decrement priority value? A. There is no need to explicitly state the value if the desired value is the default value. One possible selection algorithm is to always select the first address.org/rfc/rfc3768.ietf. VRRP advertisements are always sent using the primary IP address as the source of the IP packet. B. standby slave http://www. then it will always become the Master. standby 1 track 100 standby 1 track 100 decrement 1 standby 1 track 100 decrement 5 standby 1 track 100 decrement 20 Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation: The default decrement value for HSRP standby tracking is 10.IP Address Owner The VRRP router that has the virtual router's IP address(es) as real interface address(es). when up.com/ . etc.

Which option describes the reason for this message in a GLBP configuration? A. random delay so that all client groups do not change at the same time. standby group backup Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Perform this task to configure multiple HSRP client groups.cisco. C. Verify the spanning-tree topology and check if there is any layer2 loop. The "standby follow" command configures an HSRP group to become a slave of another HSRP group.com/en/US/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp. In order to resolve this issue. If the interface MAC address is different from the one reported in http://www. standby follow D. B. issue the show interface command to verify the MAC address of the interface.hsrp-mgo.html QUESTION 11 Refer to the exhibit.B. D. standby group track C.com/ . then it indicates that this router is receiving its own hello packets sent. HSRP client groups follow the master HSRP with a slight. Reference: http://www. Unavailable GLBP active forwarder Incorrect GLBP IP address HSRP configured on same interface as GLBP Layer 2 loop Correct Answer: D Section: [none] Explanation Explanation/Reference: 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. %GLBP-4-DUPADDR: Duplicate address The error message indicates a possible layer2 loop and STP configuration issues.exam.

then some other device with a MAC address reports this error message. When configuring the multicast boundary command.the error message. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.0. The distribution switches are configured to use HSRP to provide a high availability solution.primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device.shtml#dr QUESTION 12 Ferris Plastics. Troubleshooting has identified several issues.0. Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224. permit the Multicast address by permit 224.0. Inc.com/en/US/products/hw/switches/ps708/products_configuration_example0918 6a00807d2520.102 and User Datagram Protocol (UDP) port 3222 (source and destination). is a medium sized company.255. Currently all interfaces are up. you have been asked to investigate and respond to the following question. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 . http://www.com/ . Using the running configurations and show commands.0 15. unless GigabitEthernet1/0/1 on backup device has also failed. with an enterprise network (access.0.cisco.255.255.exam. Reference: http://www.

http://www.com/ .exam.

com/ .http://www.exam.

DSW2 became the active HSRP device for VLAN 101 as desired. Enable preempt in the VLAN 101 HSRP group on DSW1. GigabitEthernet1/0/1 on DSW1 was shut down.exam. Correct Answer: A Section: [none] http://www. However.During routine maintenance. C. What needs to be done to make the group for VLAN 101 function properly? A.com/ . Disable preempt in the VLAN 101 HSRP group on DSW2's. DSW1 did not become the active router for VLAN 101 as desired. B. decrease the priority value to avaluethatis less ' than the priority value configured in the VLAN 101 HSRP group on DSW2. Decrease the decrement value in the track command for the VLAN 101 HSRP group on U DSWTs to a values less than the value in the track command for the VLAN 101 HSRP group on DSW2. after GigabitEthemet1/0/1 on DSW1 was reactivated. All other interfaces were up. D. In the VLAN 101 HSRP group on DSW1.

Explanation Explanation/Reference: Explanation: QUESTION 13 Ferris Plastics. Troubleshooting has identified several issues. Inc. Using the running configurations and show commands.exam. is a medium sized company.primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 . http://www. unless GigabitEthernet1/0/1 on backup device has also failed. with an enterprise network (access.com/ . The distribution switches are configured to use HSRP to provide a high availability solution. Currently all interfaces are up. you have been asked to investigate and respond to the following question. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.

exam.http://www.com/ .

exam.com/ .http://www.

0 The decrement value on DSW1 should be greaterthan 9 and less than 15. B. it became necessary to shut down the GigabitEthernet1/0/1 interface on DSW1. The decrement value on DSW1 should be greaterthan 11 and less than 19. The decrement value on DSWTs should be greaterthan 195 and less than 205. DSW1 remained the active device for the VLAN 102 HSRP group.exam. The decrement value on DSWTs should be greaterthan 190 and less than 200. The decrement value on DSW1 should be greaterthan 5 and less than 15. E. All other interfaces were up. Correct Answer: C Section: [none] Explanation http://www. What needs to be done to make the group function properly? A. D.com/ . You have determined that there is an issue with the decrement value in the track command for the VLAN 102 HSRP group. C.During routine maintenance. During this time.

http://www. unless GigabitEthernet1/0/1 on backup device has also failed. you have been asked to investigate and respond to the following question.exam. Currently all interfaces are up. Priority value is 200. Inc. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 .Explanation/Reference: Explanation: Use "show run" command to show. is a medium sized company. QUESTION 14 Ferris Plastics. we should decrement value in the track command from 11 to 18. Because 200 11 = 189 < 190 (priority of Vlan102 on DS2).primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. Troubleshooting has identified several issues. with an enterprise network (access. Using the running configurations and show commands. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. The distribution switches are configured to use HSRP to provide a high availability solution. The left Vlan102 is console1 of DS1.com/ .

http://www.com/ .exam.

com/ .http://www.exam.

On DSW2. On DSW1. B. D. increase the decrement value in the track command to a value greater than 10 and less than 50. C. On DSW2. Correct Answer: C Section: [none] Explanation Explanation/Reference: http://www.All interfaces are active.exam. DSW2 has not become the active device for the VLAN 103 HSRP group. decrease the priority value to a value less than 190 and greater than 150.com/ . As related to the VLAN 103 HSRP group. On DSW1. what can be done to make the group function properly? A. increase the priority value to a value greater 200 and less than 250. disable preempt.

but it should be less than 250 so that if the gig 1/0/1 interface goes down. so the correct answer is to increase the priority to more than 200. http://www. we see that the active router has a priority of 200.com/ . DSW2 is configured to decrement the priority by 50 if this interface goes down.exam.Explanation: From the output shown below of the HSRP status of DSW2. while the local priority is 190. DSW1 will become active. but less than 250. We need to increase the priority of DSW2 to greater than 200.

is a medium sized company. Currently all interfaces are up. The distribution switches are configured to use HSRP to provide a high availability solution.primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. with an enterprise network (access.exam. Using the running configurations and show commands. you have been asked to investigate and respond to the following question. http://www. Troubleshooting has identified several issues. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 .com/ . Inc.QUESTION 15 Ferris Plastics. unless GigabitEthernet1/0/1 on backup device has also failed. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.

com/ .exam.http://www.

http://www.exam.com/ .

All other interfaces were up. B.exam. On DSW1. disable preempt. D. On DSW1. As related to the VLAN 104HSRP group. During this time.During routine maintenance. Correct Answer: C Section: [none] Explanation http://www. DSW1 became the active router for the VLAN 104HSRP group. On DSW2 decrease the priority value to a value less than 150. what can to be done to make the group function properly? A. it became necessary to shut down the GigabitEthernet1/0/1 interface on DSW1 and DSW2. C. decrease the decrement value in the track command to a value less than 1.com/ . On DSW1. increase the decrement value in the track command to a value greater than 6.

Troubleshooting has identified several issues. Vlan104 (left): 150 1 = 149. G0/1/0 on DS1 & DS2 is shutdown. If increase the decrement in the track value to a value greater than 6 (> or = 6). Inc. Using the running configurations and show commands. is a medium sized company. QUESTION 16 Ferris Plastics. you will make Vlan104's HSRP group fail function. Example: if we are disable preempt on DS1. Vlan104 (right): 200 155 = 145. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. It can not become active device when G1/0/1 on DS2 fail.primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device.exam. In this question. By do that.com/ . unless GigabitEthernet1/0/1 on backup device has also failed. with an enterprise network (access. Result is priority 144 < 145 (vlan104 on DS2 is active).Explanation/Reference: Explanation: We should NOT disable preempt on DS1. http://www. Result is priority 149 > 145 (Vlan104 on DS1 is active). The distribution switches are configured to use HSRP to provide a high availability solution. Currently all interfaces are up. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 . you have been asked to investigate and respond to the following question. Vlan104 (left): 150 6 = 144.

com/ .http://www.exam.

com/ .http://www.exam.

B.What is the priority value of the VLAN 105 HSRP group on DSW2? A.exam. C.com/ . D. 50 100 150 200 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: http://www.

Inc. QUESTION 17 Ferris Plastics. Very easy to see priority of Vlan105 is 100. Currently all interfaces are up. http://www. distribution and core switches) that provides LAN connectivity from user PCs to corporate servers.Use "show standby brief" command on console2. The distribution switches are configured to use HSRP to provide a high availability solution. Using the running configurations and show commands.exam.primary device for VLAN 103 and VLAN 104 A failure of GigabitEthemet1/0/1 on primary device should cause the primary device to release its status as the primary device. with an enterprise network (access.com/ . unless GigabitEthernet1/0/1 on backup device has also failed. you have been asked to investigate and respond to the following question. DSW1 -primary device for VLAN 101 VLAN 102 and VLAN 105 DSW2 . is a medium sized company. Troubleshooting has identified several issues.

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90 100 150 200 Correct Answer: A Section: [none] Explanation Explanation/Reference: Explanation http://www. B. C. what will be the resulting priority value of the VLAN 105 HSRP group on router DSW2? A.com/ . D.If GigabitEthemet1/0/1 on DSW2 is shutdown.exam.

http://www.com/ . They have questions about how these two devices will perform in the event of a device failure. and the tracking feature for Gig 1/0/0 is enabled which will decrement the priority by 10 if this interface goes down for a priority value of 90. QUESTION 18 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. the current priority for VLAN 105 is 100.exam.As seen below.

com/ .http://www.exam.

exam.com/ .http://www.

0/24 subnet is being forwarded through R1? A.What percentage of the outgoing traffic from the 172. R1-0% R1-50 %.exam. C.16. R2-50% R2-100% R1-100% http://www.com/ .10. B. D.

we see that R1 is the active standby router for the Ethernet 0/0 link.exam. QUESTION 19 http://www. so all outgoing traffic will be forwarded to R1.com/ .Correct Answer: D Section: [none] Explanation Explanation/Reference: Explanation: Based on the following output.

Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. They have questions about how these
two devices will perform in the event of a device failure.

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Refer to the exhibit. If router R1 interface Etherne0/0 goes down and recovers, which of the statement regarding HSRP priority is true?
A.
B.
C.
D.
E.

The interface will have the priority decremented by 40 for HSRP group 1.
The interface will have the priority decremented by 60 for HSRP group 1
The interface will have its current priority incremented by 40 for HSRP group 1
The interface will have its current priority incremented by 60 for HSRP group 1
The interface will default to the a priority of 100 for HSRP group 1

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They have questions about how these two devices will perform in the event of a device failure. it will then increment it by 40 back to 130 for HSRP group 1. when it comes back up.com/ . QUESTION 20 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. However. when the Ethernet 0/0 interface goes down. the standby 1 track decrement command will lower the priority from 130 to 90.exam.Correct Answer: C Section: [none] Explanation Explanation/Reference: Explanation: Here is the HSRP configuration seen on R1: Here. http://www.

exam.com/ .http://www.

http://www.exam.com/ .

What issue is causing Router R1 and R2 to both be displayed as the HSRP active router for group 2? A. C. E.exam. The HSRP group number mismatch The HSRP group authentication is misconfigured The HSRP Hello packets are blocked The HSRP timers mismatch The HSRP group priorities are different http://www. B.com/ . D.

com/ . but not on R1: http://www. we see that authentication is configured on R2.Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: Based on the configuration output.exam.

This can be further verified by issuing the "show standby" command on each router. http://www.exam.com/ .

com/ . http://www.exam. They have questions about how these two devices will perform in the event of a device failure.QUESTION 21 Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP.

http://www.com/ .exam.

http://www.exam.com/ .

0010 0000.ac02 http://www. C.ac01 4000.What is the virtual mac-address of HSRP group 1? A.com/ .ac01 4000. E.ac02 4000. B. D.0c07.exam. 0000.0c07.0000.0000.0000.

0010 Correct Answer: B Section: [none] Explanation Explanation/Reference: Explanation: Issuing the "show standby" command on either router shows us that the virtual MAC used by HSRP group 1 is 4000. http://www.0000. 0000.0010.exam.com/ .F.0c07.

com/ .http://www.exam.

exam.http://www.com/ .exam.com/ http://www.