642-887 Sample Question: 23

Question: 23

What is the term that is used for the label that an LSR assigns and distributes to other LSRs in MPLS?

A. Local
B. Remote
C. Explicit
D. Explicit Null
E. Aggregate

Answer: A

642-887 Sample Question: 22

Question: 22

When troubleshooting LDP operations on the Cisco IOS and IOS XE routers, what is one of the first things that should be verified?

A. if running OSPF as the IGP, ensure that OSPFv3 has been enabled
B. check if the ip cef command has been enabled
C. verify in the running configurations that all of the required LDP interfaces are defined under the mpls ldp command configuration mode
D. verify if there are any access lists that are denying TCP and UDP port 464 packets

Answer: B

642-887 Sample Question: 21

Question: 21

LDP session protection uses which one to maintain the LDP session between LDP neighbors?

A. LDP NSF
B. LDP NSR
C. backup-targeted LDP hellos
D. BFD
E. LDP-IGP synchronization

Answer: C

642-887 Sample Question: 20

Question: 20

When troubleshooting LDP operations on the Cisco IOS and IOS XE routers, what is one of the first things that should be verified?

A. if running OSPF as the IGP, ensure that OSPFv3 has been enabled
B. check if the ip cef command has been enabled
C. verify in the running configurations that all of the required LDP interfaces are defined under the mpls ldp command configuration mode
D. verify if there are any access lists that are denying TCP and UDP port 464 packets

Answer: B

642-887 Sample Question: 19

Question: 19

What is the term that is used for the label that an LSR assigns and distributes to other LSRs in MPLS?

A. Local
B. Remote
C. Explicit
D. Explicit Null
E. Aggregate

Answer: A

642-887 Sample Question: 18

Question: 18

Within the service provider core network, which two QoS mechanisms are typically deployed on the P routers? (Choose two.)

A. LLQ
B. traffic policing and remarking
C. WRED
D. traffic shaping
E. traffic classification and markings
F. link fragmentation and interleaving

Answer: A,C

642-887 Sample Question: 17

Question: 17

On the Cisco IOS XR, which MQC configuration is different than on the Cisco IOS and IOS XE?

A. On the Cisco IOS XR, WRED can only be applied in the output direction.
B. On the Cisco IOS XR, marking can only be applied in the input direction.
C. On the Cisco IOS XR, LLQ can be applied in the input or output direction.
D. On the Cisco IOS XR, LLQ can use up to four priority queues: level 1, level 2, level 3, and level 4.

Answer : C