100% Pass Guarantee Of 642-887 Exam With Latest Cisco 642-887 Dumps Exam Study Guide

QUESTION 1
An engineer is allocating a determined amount of bandwidth to a customer Cisco MPLS TE tunnel to guarantee its availability on a 24/7 SLA type. Which option must be configured to make sure the customer is able to use the bandwidth agreed on the SLA? Cisco 642-887 dumps
A. RSVP that guarantees bandwidth availability end-to-end
B. Cisco MPLS TE tunnel to signal the bandwidth required
C. a QoS policy to reinforce the RSVP bandwidth reservation
D. overprovisioning to guarantee bandwidth
Correct Answer: C

QUESTION 2
Which Cisco IOS XR high-availability feature is used to prevent routes from being used before LDP converges?
A. LDP session protection
B. LDP-IGP synchronization
C. BFD
D. IGP session protection
Correct Answer: B

QUESTION 3
Which three mechanisms are used to implement MPLS TE? (Choose three.)
A. tunnel interface
B. CSPF
C. RSVP
D. LDP
E. MP-BGP
Correct Answer: ABC
642-887
QUESTION 4
Which are typical class-based marking policies that are implemented on service provider IP NGN PE routers?
A. On the PE ingress, classify the customer traffic and then mark with qos-group. On the PE egress,classify based on the qos group and then mark with mpls exp.
B. On the PE ingress, classify the customer traffic and then mark with mpls exp. On the PE egress, classify based on the mpls exp and then mark with qos-group.
C. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with qos-group.
D. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with mpls exp.
Correct Answer: A

QUESTION 5
Which two features are used to provide Cisco 642-887 dumps MPLS TE node and link protection? (Choose two.)
A. autoroute
B. fast reroute
C. backup tunnels
D. BFD
Correct Answer: BC

QUESTION 6
A network engineer must analyze RSVP-TE signaling on a syslog server. Which three RSVP messages are valid? (Choose three.)
A. RSVP PATH
B. RSVP RESERVATION
C. RSVP ESTABLISHED
D. RSVP PATH TEAR
E. RSVP KILL
F. RSVP INIT
Correct Answer: ABD

QUESTION 7
On the Cisco ASR9K router, when using the bandwidth command to specify the minimum guaranteed bandwidth to be allocated for a specific class of traffic, what will be used as the queuing algorithm?
A. custom queuing
B. CBWFQ
C. WFQ
D. FIFO
E. priority queuing
Correct Answer: B

QUESTION 8
A DSCP value of 41 in decimal corresponds to which IP precedence value?
A. 3 ?Flash
B. 4 ?Flash Override
C. 5 ?Critical
D. 6 ?Internet Control
E. 7 ?Network Control
Correct Answer: C

QUESTION 9
Which three fields must be the same in an IPv6 header to consider different packets on the same flow? (Choose three.)
A. source port
B. destination address
C. destination port
D. source address
E. flow label
F. transport protocol type
Correct Answer: BDE

QUESTION 10
Cisco 642-887 dumps 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?
A. BGP
B. MP-BGP
C. LDP
D. RSVP
E. OSPF or IS-IS with TE extension
Correct Answer: E

QUESTION 11
The regional operation center deploys a Cisco MPLS TE tunnel over the company’s core network. The Cisco MPLS TE tunnel is up and no error is detected, but no traffic is traversing the tunnel. Which two issues are possible causes? (Choose two.)
A. The provider edge router is not performing the correct redistribution.
B. The interior gateway protocol has no knowledge of the Cisco MPLS TE tunnel.
C. No static route has been defined to route data traffic over the Cisco MPLS TE tunnel.
D. The customer edge router is injecting rogue IPv4 prefixes in the provider edge routing table.
E. The end-to-end label switched path has not been established.
Correct Answer: BC

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