Question

The protocol data unit (PDU) for the application layer in the Internet stack is
1. Segment
2. Datagram
3. Message
4. Frame

Answer 1

Correct Answer - Option 3 : Message

The correct answer is option 3

CONCEPT

PDU for the application layer is messages.

• A protocol data unit (PDU) is a single unit of information transmitted among peer entities of a computer network.
• PDU for the physical layer is bits.
• PDU for the data link layer is a frame.
• PDU for the network layer is packets.
• PDU for the transport layer is a segment.