MCQ Detailed View

The main task handled by the Network Layer in the OSI model is routing packets between networks.

The Network Layer (Layer 3) is responsible for determining the best path for data to travel from the sender to the receiver, especially when data has to pass through multiple networks. This is known as routing.

Key responsibilities of the Network Layer:

• Logical addressing: Assigns IP addresses to devices for unique identification.


• Routing: Finds the most efficient path for data packets using routing protocols and routers.


• Packet forwarding: Transfers packets based on the destination IP address.

Explanation of other options:

• Segment sequencing is handled by the Transport Layer.


• Media access control belongs to the Data Link Layer.


• Session termination is managed by the Session Layer.

Conclusion: The correct task of the Network Layer is routing packets between networks. It ensures that data can move across different networks and reach its intended destination, making it a core function in networking.