Free Sharing Flydumps Cisco 642-691 exam questions and answers are constantly being revised and updated for relevance and accuracy.Many candidates has passed the Cisco 642-691 exam easily by training the new version.100% pass rate.
Exam A
QUESTION 1
For which purpose is the command mpls ldp maxhops used?
A. In large ATM-MPLS networks, the LFIB can become too large and it may be necessary to limit the maximum diameter of the MPLS LSPs.
B. Because downstream-on-demand label allocation uses hop count to control loop detection, it maybe necessary to limit the maximum diameter of the MPLS network.
C. Because end-to-end delay can cause problems with some voice applications, it may be necessary to limit the maximum diameter of the MPLS network.
D. When interconnecting large frame mode MPLS and cell mode networks it may be necessary to limit the maximum network diameter to prevent forwarding loops.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Refer to the diagram. What problem can be caused by the second P router summarizing the loopback address of the egressPE router?