GATE 2012 CS (CS1) – Question 20

Computer Networks · Principles of Layering · 1 mark · Multiple choice

The application-layer protocol data unit in the Internet stack is called a

Segment
Datagram
Message
Frame

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Correct answer: (C) Message

Explanation

The generic application-layer data unit is a message. Transport uses segments or datagrams, and link-layer transmission uses frames. Therefore C identifies the layer requested.

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