Which of the following protocols is used to authenticate the client and server’s digital certificate?

A.
PEAP

B.
DNS

C.
TLS

D.
ICMP

Explanation:
Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications
security over a computer network. It uses X.509 certificates and hence asymmetric cryptography
to authenticate the counterparty with whom it is communicating, and to exchange a symmetric key.