CompTIA Network+ (N10-009) — Question 93

A network engineer is designing a secure communication link between two sites. The entire data stream needs to remain confidential. Which of the following will achieve this goal?

Answer options

• A. GRE
• B. IKE
• C. ESP
• D. AH

Correct answer: C

Explanation

The correct answer is C, ESP (Encapsulating Security Payload), which provides confidentiality by encrypting the data stream. GRE (A) is for tunneling but does not provide encryption, IKE (B) is used for key exchange, and AH (D) provides authentication but not confidentiality.