Cisco Implementing Cisco Service Provider Next-Generation Core Network Services - 642-887 Exam Practice Test
A network engineer wants to implement QoS in an environment in which GRE tunnels are used. The engineer creates a policy map to classify the traffic and applies the map to the physical interface. Despite a successful ping to the end of the tunnel, the counter of the class-map ICMP does not register a hit. How can the engineer fix this problem?
Correct Answer: A
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When implementing Cisco MPLS TE, the constrained-based path calculations will use which value as the TE cost of each link within the MPLS domain?
Correct Answer: D
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Which feature should you configure to enable routers to maintain MPLS label information despite link flaps on an interface?
Correct Answer: A
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Which affinity and mask value will match the link affinity that has 0x0F in the first 8 bits and 0x01 in the last
8 bits, and the middle 16 bits can be any value?
8 bits, and the middle 16 bits can be any value?
Correct Answer: F
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An engineer must configure a policy on a Cisco IOS XE router that achieves the following:
Traffic 2 Mbps or less is transmitted
Traffic between 2 Mbps and 3 Mbps is marked with IP Precedence 4
Traffic that exceeds 3 Mbps is dropped
Which configuration achieves this policy?
Traffic 2 Mbps or less is transmitted
Traffic between 2 Mbps and 3 Mbps is marked with IP Precedence 4
Traffic that exceeds 3 Mbps is dropped
Which configuration achieves this policy?
Correct Answer: D
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Which definition describes the LIB on a Cisco router?
Correct Answer: A
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Which field in the MPLS shim header is used to support different QoS markings?
Correct Answer: E
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Cisco MPLS TE resource attributes that are configured locally for each link are distributed to the headend router of the traffic engineering tunnel using which protocol?
Correct Answer: B
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Refer to the exhibit. Based on the raw format of an MPLS header captured by a traffic analyzer, what is the value of the MPLS EXP field?
Correct Answer: C
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A service provider experiences routing issues in a customer MPLS network. The customer has two sites that are connected over its core. Which feature can be used for troubleshooting?
Correct Answer: D
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When defining an explicit MPLS TE tunnel path, which two command options are available under the explicit-path configuration mode? (Choose two.)
Correct Answer: A,B
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An engineer is working in a service provider environment to troubleshoot a MPLS VPN. The engineer determines that LDP neighborship is flapping between two routers and causing disruption to the traffic. Which LDP feature can help to solve the issue?
Correct Answer: A
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A network engineer must analyze RSVP-TE signaling on a syslog server. Which three RSVP messages are valid? (Choose three.)
Correct Answer: A,B,E
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Implementing IPoDWDM interfaces on Cisco CRS routers eliminates the need for which network component?
Correct Answer: C
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