Question 1

Which of the following is a function of the control plane in an MPLS router?

Options :

A : Label swapping

B : Pushing a label on an unlabeled packet

C : Label allocation

D : Routing lookups

Answer: C

Question 2

Click on the exhibit. 4-A0-103-page112-image71 Which of the following is FALSE?

Options :

A : The router can reach prefix 192.10.1.2/32 through a RSVP-TE tunnel.

B : The router can reach prefix 192.10.1.2/32 through an LDP tunnel.

C : The router 10.10.10.2 is the egress router of the prefix 192.10.1.2/32.

D : The Isp-ping tool is used to perform a unidirectional LSP test.

Answer: A

Question 3

Which of the following statements regarding LSP path configuration are true? (Choose three)

Options :

A : The path must include at least one hop.

B : The path may be used multiple times in a single LSP.

C : The path may comprise loose hop entries only.

D : The path must define the LSP-s tail end.

E : The path may be used for multiple LSPs.

Answer: A,D

Question 4

Click on the exhibit. 4-A0-103-page112-image36 Initially, all links along the path R1-R2-R4-R6 have 400Mbps unreserved bandwidth and all links along the pathR1-R3-R5-R6 have 800Mbps unreserved bandwidth. Shared Explicit reservation style is used and MakeBefore-Break is enabled. Both fully loose LSPs have been signaled as shown. Later, the configured bandwidthfor LSP-1 is changed to 400Mbps. Which of the following is TRUE?

Options :

A : After a new path for LSP-1 is established on R1-R3-R5-R6, the old path is torn down.

B : After the old path for LSP-1 is torn down, the new path is established on R1-R3-R5-R6.

C : LSP-1 will stay on R1-R2-R4-R6 because there is enough bandwidth on the existing path.

D : LSP-1 will be torn down because CSPF fails to find a new path.

Answer: C

Question 5

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

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