Which security protocol requires the servers to use digital certificates?

A.
AH and ESP for HTTP traffic

B.
Telnet for console sessions

C.
SSL and TLS for HTTP traffic

D.
SSH for console sessions

Explanation:
Procedure starts with:
Once the client and server have decided to use TLS they negotiate a stateful connection by using
a handshaking procedure. During this handshake, the client and server agree on various
parameters used to establish the connection’s security.
Etc.