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Question 1

What is the common usage of the MPLS EXP bits?

Options :

A : Each implementation can use them as they see fit

B : They are used to carry the Ethertype value

C : They are used to carry the TTL value

D : They are used to carry QoS classification

Answer: D

Question 2

What happens by default on an Alcatel-Lucent 7750 SR when a VPLS accepts a tagged frame at the ingress SAP 1/1/1:100?

Options :

A : The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network

B : The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network

C : The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network

D : The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network

Answer: D

Question 3

Which of the following about CAC is FALSE?

Options :

A : CAC is used when the LSP path has not been computed by CSPF

B : CAC is used when the LSP path has been computed by CSPF

C : CAC is used to perform a bandwidth check on each egress interface of the downstream router

D : CAC is used to perform a bandwidth check based on the router-s LSDB

Answer: D

Question 4

Which of the following devices inspects the MPLS header in the received packet, and exchanges it for a new MPLS header?

Options :

A : iLER

B : LER

C : LSR

D : PE

Answer: C

Question 5

What is the purpose of a T-LDP session?

Options :

A : It allows link LDP to be configured on the edge devices only

B : It is used to signal the transport labels in the provider core

C : It allows selective control over which devices are configured for LDP

D : It is used to signal the service labels in the provider core

Answer: D