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

Question

Options

• APEAP
• BDNS
• CTLS
• DICMP

• A
  2% (1)
• B
  7% (3)
• C
  88% (37)
• D
  2% (1)

Explanation

TLS (Transport Layer Security) is the protocol responsible for authenticating digital certificates during the handshake process. During a TLS handshake, the server presents its digital certificate to the client; the client validates it against a trusted Certificate Authority (CA). In mutual TLS (mTLS), the client also presents a certificate for the server to authenticate. TLS provides confidentiality, integrity, and authentication for communications. PEAP (Protected Extensible Authentication Protocol) is a wireless/VPN authentication protocol that encapsulates EAP within TLS but is not the core certificate authentication protocol. DNS resolves hostnames to IP addresses. ICMP is used for diagnostics (e.g., ping) and has no role in certificate authentication.

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