Free Cisco 642-887 Exam Dumps Questions & Answers

Which Cisco IOS XR command should be used in order to enable LDP on all interfaces for which the IGP protocol is enabled?

• A.  RP/0/0/CPU0:R1(config-ospf)#mpls ldp auto-config
• B.  RP/0/0/CPU0:R1(config-ospf)#mpls ldp interface all enable
• C.  RP/0/0/CPU0:R1(config-ospf)#enable all
• D.  RP/0/0/CPU0:R1(config-ldp)#enable all

A network operations center analyzes a Wireshark capture and tries to verify which QoS policy is effective over a customer router. How many bits define the DSCP values?

• A.  6
• B.  8
• C.  3
• D.  16

Which option describes the IPv6 flow label field?

• A.  an 8-bit field out of which the first 6 are used to classify packets
• B.  an 8-bit field used for labeling a traffic flow
• C.  a 3-bit field used for marking a traffic flow
• D.  a 20-bit field used to tag a traffic flow throughout the network

Refer to the Cisco IOS XR policy-map configuration exhibit.

What is wrong with the policy-map configuration?

• A.  missing the priority bandwidth command under class one and class two
• B.  missing the priority percent command under class one and class two
• C.  missing the police command under class one and class two
• D.  missing the police command under class three
• E.  missing the bandwidth command under class one and class two