Download New Updated (Spring 2015) Cisco 642-997 Actual Tests 21-30

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QUESTION 21

Which statement about electronic programmable logic device image upgrades is true?

 

A.      EPLD and ISSU image upgrades are nondisruptive.

B.      An EPLD upgrade must be performed during an ISSU system or kickstart upgrade.

C.      Whether the module being upgraded is online or offline, only the EPLD images that have different current and new versions are upgraded.

D.      You can execute an upgrade or downgrade only from the active supervisor module.

 

Correct Answer: D

 

 

QUESTION 22

Which statement about SNMP support on Cisco Nexus switches is true?

 

A.      Cisco NX-OS only supports SNMP over IPv4.

B.     
Cisco NX-OS supports one instance of the SNMP per VDC.

C.      SNMP is not VRF-aware.

D.      SNMP requires the LAN_ENTERPRISE_SERVICES_PKG license.

E.       Only users belonging to the network operator RBAC role can assign SNMP groups.

 

Correct Answer: B

 

 

QUESTION 23

Which GLBP load-balancing algorithm ensures that a client is always mapped to the same VMAC address?

 

A.      vmac-weighted

B.      dedicated-vmac-mode

C.      shortest-path and weighting

D.      host-dependent

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Correct Answer: D

 

 

 

 

 

QUESTION 24

What is the grace period in a graceful restart situation?

 

A.      how long the supervisor waits for NSF replies

B.      how often graceful restart messages are sent after a switchover

C.      how long NSF-aware neighbors should wait after a graceful restart has started before tearing down adjacencies

D.      how long the NSF-capable switches should wait after detecting that a graceful restart has started, before verifying that adjacencies are still valid

 

Correct Answer: C

 

 

QUESTION 25

Which two types of traffic are carried over a vPC peer link when no failure scenarios are present? (Choose two.)

 

A.      multicast data traffic

B.      unicast data traffic

C.      broadcast data traffic

D.      vPC keep-alive messages

 

Correct Answer: AC

 

 

QUESTION 26

A Cisco Nexus 2000 Series Fabric Extender is connected to two Cisco Nexus 5000 Series switches via a vPC link. After both Cisco Nexus 5000 Series switches lose power, only one switch is able to power back up. At this time, the Cisco Nexus 2000 Series Fabric Extender is not active and the vPC ports are unavailable to the network. Which action will get the Cisco Nexus 2000 Series Fabric Extender active when only one Cisco Nexus 5000 Series switch is up and active?

 

A.      Move the line from the failed Cisco Nexus 5000 Series switch to the switch that is powered on, so the port channel forms automatically on the switch that is powered on.

B.      Shut down the peer link on the Cisco Nexus 5000 Series switch that is powered on.

C.      Configure reload restore or auto-recovery reload-delay on the Cisco Nexus 5000 Series switch that is powered on.

D.      Power off and on the Cisco Nexus 2000 Series Fabric Extender so that it can detect only one Cisco Nexus 5000 Series switch at power up.

 

Correct Answer: C

 

 

 

QUESTION 27

Which policy-map action performs congestion avoidance?

 

A.      priority

B.      bandwidth

C.      queue-limit

D.      random-detect

 

Correct Answer: D

 

 

QUESTION 28

Refer to the exhibit. Which statement based on these two outputs that were collected 24 hours apart is true?

 

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A.      The Site 2 OTV edge device has gone down.

B.      The MAC address cannot be discovered on two separate port channel interfaces.

C.      The MAC address that ends in 020a moved to the local site 23 hours ago.

D.      The Overlay1 IP address should be a multicast IP address.

 

Correct Answer: C

 

QUESTION 29

Which two reasons explain why a server on VLAN 10 is unable to join a multicast stream that originates on VLAN 20? (Choose two.)

 

A.      IGMP snooping and mrouter are not enabled on VLAN 10.

B.      VLAN 20 has no IGMP snooping querier defined and VLAN
10 has no mrouter.

C.      The mrouter on VLAN 20 does not see the PIM join.

D.      The mrouter must be on VLAN 10 and VLAN 20.

 

Correct Answer: AC

 

 

QUESTION 30

Which two issues explain why a packet is not being routed as desired in a policy-based routing configuration? (Choose two.)

 

A.      The route map is not applied to the egress interface.

B.      The route map is not applied to the ingress interface.

C.      The next hop that is configured in the route map is not in the global routing table.

D.      The next hop that is configured in the route map has a higher metric than the default next hop.

 

Correct Answer: CD

 

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