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QUESTION 239
The LDP identifier is used to identify a router during LDP session establishment. What size is the LDP identifier?
A. 8 bytes
B. 6 bytes
C. 2 bytes
D. 4 bytes

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation:
From page 33 of reference “The TDP identifier is determined in the same way as the OSPF or BGP
identifier (unless controlled by the tag tdp router-id command) — the highest IP address of all loopback
interfaces is used. That means the identified is a 32-bit ip address which should be 32/8 = 4 bytes long.
Reference: MPLS and VPN Architectures (CCIP edition)

QUESTION 240
What is true about frame mode MPLS?
A. It uses Conservative label retention.
B. It uses per-platform label allocation.
C. It uses ordered label control.
D. It used per-interface label allocation.

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 241
What is a possible use of make-before-break recovery using frame mode MPLS traffic engineering?
A. It overcomes issues of convergence during both link failure and recovery.
B. It overcomes issues of convergence during link recovery.
C. It overcomes issues of convergence during link failure.

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 242
Which of the following modes of operation would be used for cell mode MPLS?
A. Unsolicited label distribution.