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QUESTION 355
Which of the following label operations can be performed by a P router that is not a penultimate router in the MPLS VPN path?
A. Pop
B. Purge
C. Push
D. Swap
Correct Answer: D Section: (none) Explanation
Explanation/Reference: QUESTION 356
If labels are being distributed in an MPLS network but no labels are being allocated for local routes, what could be the problem?
A. There is an error with the conditional label distribution configurat on.
B. CEF is disabled on the LSR.
C. There are no LDP neighborships established to the LSR.
D. CEF is not enabled on an input interface.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 357
If you use the configuration statement “mpls mtu 1512” how many labels in a label stack are being allowed for?
A. 3
B. 2
C. 4
D. 1
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 358
In an MPLS domain that carries BGP traffic it is best to use host routes without summarization for BGP next hop addresses. True or false?
A. False
B. True
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 359
How is the TTL field in the label header generated?
A. It is set to a number equal to the number of hops in the MPLS path plus 1.
B. It is copied from the TTL field in the IP header on ingress.
C. It is copied from the TTL field in the IP header on egress.
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QUESTION 286
What is true about TDP and LDP?
A. They can coexist in an MPLS network providing peers use the same type.
B. They are compatible between peers of differing type.
C. They are functionally equivalent but incompatible.
D. An MPLS network must use only one type throughout.
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 287
How many bits are there in the label field of an MPLS label?
A. 24
B. 30
C. 16
D. 20
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 288
In multicast IP routing what entity is assigned a unique FEC?
A. An IGP prefix in conjunction with a class of service.
B. An egress router.
C. An IGP prefix.
D. A destination multicast address.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 289
When using a hub and spoke VPN topology and EBGP as the PE to CE protocol it is necessary to implement allowas-in on the PE router that connects to the customer hub site. True or false?
A. True
B. False Correct Answer: A
Section: (none) Explanation
Explanation/Reference:
QUESTION 290
How many interfaces can be associated to a VRF?
A. 1
B. 2
C. 0
D. Many
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 291
Which of the following correctly configures simple per-VRF OSPF?
