In the OSI model, which layer determines the best logical path for data delivery?

Question

Accepted Answer

Network Layer - In the OSI model, the Network Layer is responsible for selecting the best logical path for data to travel from the sender to the receiver across interconnected networks.

This process is known as routing. The Network Layer uses logical addressing (like IP addresses) and routing algorithms to determine the most efficient path for each data packet. Routers operate at this layer to forward data based on destination IP addresses.

Main responsibilities of the Network Layer:

Decides the best route for data to reach its destination.
Uses IP addresses for logical addressing and identification.
Handles packet forwarding and routing between networks.


Other options explained:

Data Link Layer deals with MAC addresses and local delivery within the same network.
Transport Layer ensures reliable data transfer but does not route data.
Session Layer manages sessions between devices, not routing.


Conclusion: The correct answer is Network Layer because it handles routing and logical path selection for data delivery between devices in different networks.

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