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Share some Cisco 642-887 Dumps Exam Questions and Answers Below:

QUESTION 1

In Cisco IOS, what must be configured to ensure that an MPLS TE tunnel becomes active?

A. layer 3 addressing on the tunnel, to establish bidirectional communication over the tunnel

B. the tunnel for autoroute, to ensure proper installation into the forwarding plane

C. a path-option configuration, for either dynamic or explicit paths

D. the tunnel with a minimum bandwidth value, to properly calculate CSPF

Correct Answer: A

QUESTION 2

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?

A. By default, it will use the IGP metric, or each link can be assigned a specific value using the admin-weight command.

B. It can only use the IGP metric as the TE cost.

C. It will use the interface bandwidth as the TE cost.

D. Each link must be assigned a TE cost using the metric command.

Correct Answer: A

QUESTION 3

The Cisco IOS and IOS XE qos pre-classify command allows which kind of packet classification on IP packets that are

encapsulated with GRE and IPsec?

A. allows for packets to be classified based on the ToS byte values before packet encryption

B. allows for packets to be classified based on the ToS byte values after packet encryption

C. allows for packets to be classified based on the packet payload before packet encryption

D. allows for packets to be classified based on the packet payload after packet encryption

E. allows for packets to be classified based on the packet header parameters other than the ToS byte values after

packet encryption

Correct Answer: E

QUESTION 4

An engineer must automatically copy the IP Prec/DiffServ PHB marking to the EXP bits of the imposed MPLS label on

the ingress PE, as well as the MPLS EXP bits to the IP Prec/DiffServ of the egress PE. Which MPLS QoS model is

suitable for this requirement?

A. pipe model

B. short-pipe model

C. uniform model

D. uniform pipe model

Correct Answer: C

QUESTION 5

Refer to the exhibit. From which table was the information obtained?

A. FIB

B. CEF

C. LIB

D. LFIB

Correct Answer: D

QUESTION 6

Which two traffic types are recognized by NBAR default configuration settings? (Choose two.)

A. HTTP URL

B. Sun RPC

C. TCP

D. UDP

E. HTTPS URL

Correct Answer: AB

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