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Which of the following correctly lists the PDU names in order from the Application layer down to the Physical layer in the OSI model?

easy📝 Conceptual Q3 of 15
Computer Networks - OSI and TCP/IP Models
Which of the following correctly lists the PDU names in order from the Application layer down to the Physical layer in the OSI model?
ABit, Frame, Packet, Segment, Data
BData, Segment, Packet, Frame, Bit
CFrame, Packet, Segment, Data, Bit
DPacket, Segment, Frame, Bit, Data
Step-by-Step Solution
Solution:

  1. Step 1: Recall PDU names per OSI layer

    Application layer uses Data, Transport uses Segment, Network uses Packet, Data Link uses Frame, Physical uses Bit.

  2. Step 2: Arrange in order from top to bottom

    So the order is Data, Segment, Packet, Frame, Bit.

  3. Final Answer:

    Data, Segment, Packet, Frame, Bit -> Option B

  4. Quick Check:

    OSI PDU order = Data, Segment, Packet, Frame, Bit [OK]
Quick Trick: Remember OSI top-down: Data, Segment, Packet, Frame, Bit [OK]
Common Mistakes:
MISTAKES
  • Mixing order of PDUs
  • Confusing Frame and Packet positions

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