Question 1

Which of the following conditions must a router meet for an LSP path's RSVP session to exist? Choose two answers

Options :

A : The router must build the Path State Block (PSB).

B : The router must build the Reservation State Block (RSB).

C : The router must build the Session State Block (SSB)

D : The router must send the second RESV refresh message.

E : The router must receive the second PATH refresh message.

Answer: A,B

Question 2

True or False? MPLS may use an existing data link layer header field to identify a label, instead of using a specific MPLS header

Options :

A : TRUE

B : FALSE

Answer: A

Question 3

Which of the following statements is true when the implicit null is implemented?

Options :

A : The penultimate router will POP the top label from the packets.

B :

The eLER will receive packets with a top label value of 3.

C :

The eLER will receive packets with a top label value of 0.

D :

The penultimate router will always receive unlabeled packets.

E :

The penultimate router performs a double lookup on the packet.

Answer: A

Question 4

An LSP is configured with a fully loose path and CSPF is not enabled. An LSR receives the first PATH message for this LSP. Which of the following is NOT performed by the LSR?

Options :

A : The LSR regenerates and forwards a new PATH message.

B : The LSR stores the PATH message in the PSB.

C : The LSR forwards the PATH message based on the HOP object in the RSB.

D : The LSR looks up the PATH message-s destination IP address in the FIB.

Answer: C

Question 5

Click on the exhibit button below.

With fast reroute enabled, and given the following:

Two protected LSPs with the path R1-R2-R3

Both LSPs enable facility bypass and link protection.

When router R1 is the PLR, which router becomes the MP?

Options :

A : Router R1

B : Router R2

C : Router R3

D : Router R4

E : Router R5

Answer: B

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