QUESTION: 33

Which of the following statements best describes the output?

The AS-Path is not present because a policy is configured on PE2 to set it to null.
The AS-Path is not present because a policy is configured on CE1 to set it to null.
The AS-Path is not present because a policy is configured on PE1 to set it to null.
The AS-Path is not present because VPN-IPv4 routes do not propagate the IPv4 AS-Path BGP attribute.

Answer(s): C

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QUESTION: 34

For the Inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

PE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.
ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.
ASBR2 swaps the BGP label and pushes an LDP transport label.
PE2 pops all labels and forwards the unlabeled packet to its destination.

Answer(s): B

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QUESTION: 35

Which of the following statements about Carrier Supporting Carrier (CSC) VPRN is FALSE?

CSC does not allow a customer carrier to offer Layer 2 services to its end customers.
A CSC VPRN is configured on the network provider’s CSC-PE routers.
CSC eliminates the need for customer carriers to build and maintain their own MPLS backbone.
The network provider provides an MPLS VPN backbone to the customer carrier.

Answer(s): A

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QUESTION: 36

A Carrier Supporting Carrier (CSC) VRPN is configured on a Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers.
Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.
Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.
Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.

Answer(s): C

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