The exhibit shows the neighbor state as Connect in the State/PfxRcd column. The study guide explains the BGP states exactly as follows:
“Connect: Waiting for a successful three-way TCP connection”
“OpenSent: Waiting for an OPEN message from the peer”
“Established: Peers have successfully exchanged OPEN and keepalive messages”
Because the router is still in Connect state, the TCP three-way handshake has not completed yet . In practical terms, the local router has sent the TCP SYN but has not successfully received the SYN/ACK needed to complete the handshake . That is why C is correct.
Why the other options are wrong:
A is wrong because the message counters alone do not prove that the neighbor is unreachable. The study guide says the State/PfxRcd field shows the BGP state when the session is not established, and here that state is specifically Connect
B is wrong because waiting for an OPEN message happens in OpenSent , not Connect
D is not the best answer for this output. The study guide ties the displayed state directly to the protocol phase: Connect means the device is still waiting for a successful TCP handshake
So the verified answer is: C .
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