The
Session Layer (Layer 5 of the OSI Model) is responsible for managing communication sessions between two devices. It ensures that sessions are started, maintained, and closed properly.
Let’s understand what the Session Layer actually does:
- Session termination: The Session Layer can end or close a session cleanly after data exchange is complete.
- Dialog control: It manages who can send or receive data during a session, controlling the communication direction (full-duplex or half-duplex).
- Synchronization: It places checkpoints during data transfer to help recover the session in case of failure.
What it does NOT do:
- Address resolution
- Address resolution is the process of mapping an IP address to a MAC address, and this function is handled by the Network Layer or through protocols like ARP (Address Resolution Protocol).
Conclusion: The correct answer is Address resolution. This task is performed at a different layer (Network Layer), not the Session Layer.
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