Which three statements about the BGP next-hop attribute are true? (Choose three.)
A. EBGP sessions between confederation sub ASs do not modify the next-hop attribute.
B. By default, iBGP sessions change the next-hop attribute learned from eBGP peers to self address.
C. By default, the next-hop attribute is not changed when a prefix is reflected by the route reflector
D. EBGP sessions between confederation sub ASs change the next-hop attribute to peer address.
E. By default, iBGP sessions preserve the next-hop attribute learned from eBGP peers.
Correct Answer: ACE
Where is the MPLS label imposed?
A. after the Layer 3 header and before the Layer 2 payload
B. after the Layer 3 header and before the Layer 4 payload
C. after the Layer 2 header and before the Layer 1 payload
D. after the Layer 1 header and before the Layer 2 payload
E. after the Layer 2 header and before the Layer 3 payload
Correct Answer: E
Which four of these key points should be considered during implementation of PPPoA architecture? (Choose four)
A. the number of subscribers that will be serviced currently and in the future because this affects the number of required PPPoA sessions
B. The types of applications that the NSP offers to the end subscriber
C. The capacity of ATM and Frame Relay interworking on the NSP
D. in the case of more than one user, whether all users need to reach the same final destination or service, or they all have different service destinations
E. Whether the service provider or the final service destination is providing the IP address to the CPE of the subscriber
Correct Answer: ABDE
Which two statements about forwarding equivalence class (FEC) are true? (Choose two)
A. FEC might correspond to a destination IP subnet, but it might also correspond to any traffic class that the edge LSR considers significant.
B. FEC is a group of IP packets that is forwarded over a different path, but with the same forwarding treatment.
C. FEC is a group of IP packets that is forwarded over the same path, and with the same forwarding treatment.
D. FEC is a group of IP packets that is forwarded over a different path, but with the different forwarding treatment.
E. FEC is a group of IP packets that is forwarded over the same path, but with a different forwarding treatment.
Correct Answer: AC
Refer to the exhibit.
Which router is the DIS?
C. router-33 and router-44
Correct Answer: E
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