Implementing Cisco IP Switched Networks (642-813) Free Practice Test

Question 1

Which optional feature of an Ethernet switch disables a port on a point-to-point link if the port does not receive traffic while Layer 1 status is up?

A. BackboneFast

B. Link Control Word

C. Fast Link Pulse bursts

D. UplinkFast

E. UDLD aggressive mode

F. Loop Guard

Correct Answer: E

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Question 2

Which two statements about HSRP, VRRP, and GLBP are true? (Choose two.)

A. GLBP allows for router load balancing of traffic from a network segment by utilizing the creation of multiple standby groups.

B. HSRP allows for multiple upstream active links being simultaneously used, whereas GLBP does not.

C. Unlike HSRP and VRRP, GLBP allows automatic selection and simultaneous use of multiple available gateways.

D. GLBP and VRRP allow for MD5 authentication, whereas HSRP does not.

E. GLBP allows for router load balancing of traffic from a network segment without the different host IP configurations needed to achieve the same results with HSRP.

Correct Answer: C,E

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Question 3

What are three results of issuing the switchport host command? (Choose three.) Select 3 response(s).

A. disables EtherChannel

B. enables port security

C. enables PortFast

D. disables Cisco Discovery Protocol

E. enables loopguard

F. disables trunking

Correct Answer: A,C,F

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Question 4

CORRECT TEXT
Case 1

Correct Answer:

Here are the steps.
Explanation:

Question 5

Which three items are configured in MST configuration submode? (Select three)

A. VLAN instance map

B. Configuration revision number

C. Region name

D. PVST+ instance map

E. IST STP BPDU hello timer

F. CST instance map

Correct Answer: A,B,C

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Question 6

Refer to the exhibit.

The link between switch SW1 and switch SW2 is configured as a trunk, but the trunk failed to establish connectivity between the switches. Based on the configurations and the error messages received on the console of SW1, what is the cause of the problem?

A. The two ends of the trunk have different duplex settings.

B. The two ends of the trunk have different EtherChannel configurations.

C. The two ends of the trunk allow different VLANs on the trunk.

D. The two ends of the trunk have different native VLAN configurations.

Correct Answer: D

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Question 7

What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch?

A. By default, native VLAN packets going out this port are tagged.

B. The interface supports the reception of tagged and untagged traffic.

C. If the device connected to this port is not 802.1Q-enabled, it is unable to handle 802.1Q packets.

D. Without an encapsulation command, 802.1Q is the default encapsulation if DTP fails to negotiate a trunking protocol.

Correct Answer: B

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Question 8

A standalone wireless AP solution is being installed into the campus infrastructure. The access points appear to boot correctly, but wireless clients are not obtaining correct access. You verify that this is the local switch configuration connected to the access point:
interface ethernet 0/1
switchport access vlan 10
switchport mode access
spanning-tree portfast
mls qos trust dscp
What is the most likely cause of the problem?

A. switchport mode should be defined as "trunk" with respective QoS.

B. switchport access vlan should be defined as "1".

C. QoS trust should not be configured on a port attached to a standalone AP.

D. QoS trust for switchport mode access should be defined as "cos".

Correct Answer: A

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Question 9

A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state, which command should be configured?

A. Switch(config)#spanning-tree loopguard default

B. Switch(config-if)#spanning-tree bpduguard

C. Switch(config-if)#spanning-tree bdpufilter

D. Switch(config)#udld aggressive

Correct Answer: A

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Question 10

Which description correctly describes a MAC address flooding attack?

A. The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.

B. Frames with unique, invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.

C. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.

D. Frames with unique, invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.

E. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.

F. The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.

Correct Answer: B

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Question 11

What are three possible router states of HSRP routers on a LAN? (Choose three.)

A. backup

B. active

C. idle

D. standby

E. established

F. initial

Correct Answer: B,D,F

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Cisco Implementing Cisco IP Switched Networks (642-813) Free Practice Test