Exam-style question
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Which statement best describes the role of the application layer in the TCP/IP stack?.
- A.It provides network services directly to applications.
- B.It delivers frames to a device using a MAC address.
- C.It selects the route between different networks.
- D.It provides communication between processes using port numbers.
Model answer
What a good answer should say
- It provides network services directly to applications.
Explanation
Why this works
The application layer is the top layer of the TCP/IP stack and provides network services used by applications. The other options describe roles associated with the link, network and transport layers.
Common mistake
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