Question 1

Fill in the blanks: The device at the beginning of an LSP is referred to as the_________, and the device at the end of an LSP is referred to as the ___________.

Options :

A : PE, P

B : LER, LSR

C : LSR, LER

D : iLER, eLER

E : eLER, iLER

F : P, PE

Answer: D

Question 2

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 3

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An LSP traverses R1-R2-R4-R6 and one-to-one fast reroute with link protection is enabled. All links have the

same cost. Which of the following about DMP and MP is TRUE?

Options :

A :

R3 and R5 become DMPs; R6 becomes MP.

B :

R3 and R5 become DMPs; R4 becomes MP.

C :

R3, R5, and R6 become DMPs; R4 becomes MP.

D : R1, R3, and R5 becomes DMPs; R4 and R6 become MPs.

Answer: A

Question 4

Which of the following about Fast Reroute link protection tunnels is FALSE?

Options :

A : Link protection tunnels are established if a router is unable to establish node protection tunnels.

B : Link protection tunnels are only requested for a primary LSP path.

C : Link protection tunnels can be created for both one-to-one or facility Fast Reroute.

D : Link protection tunnels detour around a failed next downstream router.

Answer: D

Question 5

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