Multiple choice

Which layer - PDU match is incorrect?

  1. Network - Datagram

  2. Physical - bits

  3. Data Link - Frame

  4. Transport - Segment
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A Correct answer
Explanation

The PDU for the Network layer is a Packet, not a Datagram (though sometimes used interchangeably, Packet is the standard OSI term). However, in many contexts, Datagram is associated with Transport (UDP). Actually, the Network layer PDU is a Packet, so the match 'Network - Datagram' is technically incorrect in strict OSI terminology.

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