In the following pairs of OSI reference layers/sublayers and their…
2018
In the following pairs of OSI reference layers/sublayers and their functionality, the incorrect pair is —
- A.
Network layer and routing
- B.
Data link layer and bit synchronization
- C.
Transport layer and end-to-end process communication
- D.
Medium access control sublayer and channel sharing
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Correct answer: B
Correct answer: The pair 'Data link layer and bit synchronization' is incorrect. Bit synchronization is a function of the Physical layer, not the Data Link layer. The Physical layer handles bit-level transmission, signaling and clocking, which are required for synchronizing bits between sender and receiver. Network layer and routing — The Network layer performs routing, logical addressing, and packet forwarding across interconnected networks.
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