JNCIA-Junos: Juniper Networks Certified Associate – Junos (2022) — Question 55

When you choose to read your e-mail using an e-mail client, your e-mail client interacts with which OSI layer?

Answer options

• A. session
• B. transport
• C. application
• D. presentation

Correct answer: C

Explanation

The correct answer is C, application, because e-mail clients operate at the application layer of the OSI model, facilitating user interaction with e-mail services. The session layer (A) manages sessions but does not handle the actual data transfer, while the transport layer (B) deals with data transmission, and the presentation layer (D) formats data, but neither is directly involved in e-mail client operations.