R1 in ASN 1 with loopback1 address 1.1.1.1 needs to be configured with an iBGP
connection to R2 with loopback2 IP address 2.2.2.2. The connection should use the
loopbacks. Which of the following commands is required on R1?

A.
neighbor 1.1.1.1 remote-as 1

B.
neighbor 2.2.2.2 remote-as 2

C.
neighbor 2.2.2.2 update-source loopback1

D.
neighbor 2.2.2.2 ibgp-multihop 2

E.
neighbor 2.2.2.2 ibgp-mode

Explanation:
R1 needs to be configured with router bgp 1, neighbor 2.2.2.2 remote-as 1, and neighbor
2.2.2.2 update-source loopback1. The neighbor 2.2.2.2 ibgp-multihop 2 and neighbor 2.2.2.2
ibgp-mode commands are simply unsupported commands. The neighbor 1.1.1.1 remote-as
1 command has correct syntax and is used as a command in R2’s configuration but not on
R1. The neighbor 2.2.2.2 remote-as 2 command has correct syntax but with the wrong ASN
(2 instead of 1).