JNCIA-SEC: Juniper Networks Certified Associate – Security (2021) — Question 39

Which IPsec protocol is used to encrypt the data payload?

Answer options

• A. ESP
• B. IKE
• C. AH
• D. TCP

Correct answer: A

Explanation

ESP (Encapsulating Security Payload) is the correct protocol for encrypting data payloads in IPsec. IKE (Internet Key Exchange) is used for establishing security associations, while AH (Authentication Header) provides integrity and authentication but does not encrypt. TCP (Transmission Control Protocol) is a transport layer protocol and does not relate to IPsec encryption.