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GATE 2025 CS (CS1) – Question 16

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

Identify the ONE CORRECT matching between the OSI layers and their corresponding functionalities as shown.

OSI Layers: (a) Network layer, (b) Transport layer, (c) Datalink layer
Functionalities: (I) Packet routing, (II) Framing and error handling, (III) Host to host communication

  1. (a)-(I), (b)-(II), (c)-(III)
  2. (a)-(I), (b)-(III), (c)-(II)
  3. (a)-(II), (b)-(I), (c)-(III)
  4. (a)-(III), (b)-(II), (c)-(I)

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Correct answer: (B) (a)-(I), (b)-(III), (c)-(II)

Explanation

The network layer does packet routing, the transport layer provides host-to-host (end-to-end) communication, and the data link layer does framing and error handling.