Question 1

Which of the following statements best describes downstream unsolicited label distribution?

Options :

A : An LER may answer requests for label mappings immediately, without waiting for a label mapping from the next-hop

B : An LER may advertise label mappings to all peers for which it might be a next-hop for a given FEC

C : An LER propagates a label mapping downstream for a FEC. only if it has a label mapping for the FEC next-hop

D : An LER will only distribute a label for a FEC when it has been requested to do so

Answer: B

Question 2

Which of the following best describes the flooding of traffic on a PE when unknown traffic is received on a mesh SDP?

Options :

A : Traffic is flooded to all SAPs in the service.

B : Traffic is flooded to all SAPs and spoke SDPs in the service

C : Traffic is flooded to all SAPs and mesh SDPs in the service

D : Traffic is flooded to all SAPs, spoke SDPs, and mesh SDPs in the service

Answer: B

Question 3

VPWS allows carriers to offer services such as point-to-point frame-relay, ATM, and Ethernet on a single platform without the need for multiple overlay networks

Options :

A : TRUE

B : FALSE

Answer: A

Question 4

Which of the following about the BGP VPN-IPv4 address family is FALSE?

Options :

A : When a PE router receives an IPv4 prefix from its local CE, it creates a VPN-IPv4 prefix

B : VPN-IPv4 allows BGP to distinguish between duplicate prefixes originating from different customers.

C : In a VPRN, data traffic is carried in packets that have VPN-IPv4 addresses

D : VPN-IPv4 addresses are only present within the service provider network.

Answer: C

Question 5

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

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