The CHAP (Challenge Handshake Authentication Protocol) sends a logon request from the client
to the server, and the server sends a challenge back to the client. At which stage does the CHAP
protocol perform the handshake process? Choose the best complete answer.

A.
At the stage when the connection is established.

B.
At the stage when the connection is established and at whichever time after the connection has
been established.

C.
At the stage when the connection is established and when the connection is disconnected.

D.
At the stage when the connection is disconnected.

Explanation:

CHAP performs the handshake process when first establishing a connection; and then at random
intervals during the transaction session.