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Identify the ONE CORRECT matching between the OSI layers and their corresponding functionalities as shown.
OSI Layers — Functionalities
(a) Network layer — (I) Packet routing
(b) Transport layer — (II) Framing and error handling
(c) Datalink layer — (III) Host to host communication
- (a)-(I), (b)-(II), (c)-(III)
- (a)-(I), (b)-(III), (c)-(II)
- (a)-(II), (b)-(I), (c)-(III)
- (a)-(III), (b)-(II), (c)-(I)
Correct answer: (a)-(I), (b)-(III), (c)-(II)
Solution
The correct option matches the functionalities accurately: the Network layer is responsible for packet routing (I), the Transport layer facilitates host-to-host communication (III), and the Datalink layer handles framing and error detection (II). This alignment reflects the specific roles each layer plays in the OSI model.
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