Question 1

Which of the following statements regarding BFD session establishment is false?

AA BFD session can be dynamically established only.

BA static BFD session is set up by using commands to manually configure BFD session parameters, including the local discriminator and remote discriminator.

CDuring dynamic establishment of a BFD session, the local discriminator is allocated dynamically.

DThe system uses discriminators to distinguish static and dynamic BFD sessions.

Answer : A

Question 2

Which information of labels is used for simple traffic classification?

ADSCP priority

BIP precedence

CMPLS EXP priority

D802.1p priority

Answer : C

Question 3

Which of the following is correct procedure for a DHCP client to apply for an IP address from a DHCP server?

A1-2-3-4

B1-4-3-2

C3-2-1-4

D3-4-1-2

Answer : C

Question 4

An LSR supports various label retention modes. Which of the following statements regarding the liberal mode are true? (Multiple Choice)

AAn LSR reserves all labels sent by its neighbor.

BThe liberal mode requires more memory and label space.

CAn LSR retains labels from a neighboring LSR only when the neighbor is its next hop.

DThis label retention mode saves the memory and label space.

EThis label retention mode reduces the LSP convergence time when the IP routes converge and the next hop changes.

Answer : A, B, E

Question 5

A 32-bit MPLS header consists of a 20-bit label used for packet forwarding; A 3-bit EXP field that identifies the IP packet priority; A 1-bit bottom-of-stack flag that identifies the last label; And an 8-bitTTL field. Which statement regarding the TTL field is true?

AThis field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.

BThis field is used for label management.

CThis field used to control the upstream device in label distribution.

DThis field limitation the LSR.