MCQ Detailed View

The LLC sublayer is responsible for flow controlacknowledgment of frames. These two functions help ensure that data is sent and received reliably over a network.

• Flow Control: This manages the pace at which data is sent. It prevents the sender from overwhelming the receiver by sending too much data too quickly.


• Acknowledgment: This confirms that the receiver has successfully received the data. If data is lost or not confirmed, the sender can resend it.

The LLC sublayer acts like a coordinator. It sits between the MAC sublayer and the Network Layer. While the MAC sublayer handles access to the physical network (using MAC addresses), the LLC ensures that the data moving across the link is properly managed and organized.

In simple words: The LLC sublayer keeps the data flow smooth and confirms delivery so that devices can communicate without errors or confusion.

Conclusion: The LLC sublayer, part of the Data Link Layer, plays a key role in making sure that frames are sent at the right speed and acknowledged by the receiver for reliable data communication.