CompTIA Network+ (N10-008) — Question 493

Which of the following layers of the OSI model is responsible for end-to-end encryption?

Answer options

• A. Presentation
• B. Application
• C. Session
• D. Transport

Correct answer: D

Explanation

The Transport layer is responsible for end-to-end communication and can implement encryption protocols to secure data during transmission. The other layers, such as Presentation, Application, and Session, handle data formatting, application-level interactions, and session management but do not directly provide end-to-end encryption.