Which sublayer of the OSI Data Link layer identifies which network layer protocol is being used for the frame?

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Multiple Choice

Which sublayer of the OSI Data Link layer identifies which network layer protocol is being used for the frame?

Explanation:
The Logical Link Control (LLC) sublayer is responsible for identifying which network-layer protocol the frame carries. It sits above the MAC sublayer and uses protocol identifiers in its header (such as DSAP/SSAP fields) to indicate to the receiving device which network-layer protocol should process the payload (for example IPv4 or IPv6). The MAC sublayer handles hardware addressing and access control, not protocol identification, while the Physical sublayer deals with the actual transmission medium. The Network layer is a separate layer outside the Data Link. So the LLC sublayer is the one that identifies the network-layer protocol used by the frame.

The Logical Link Control (LLC) sublayer is responsible for identifying which network-layer protocol the frame carries. It sits above the MAC sublayer and uses protocol identifiers in its header (such as DSAP/SSAP fields) to indicate to the receiving device which network-layer protocol should process the payload (for example IPv4 or IPv6). The MAC sublayer handles hardware addressing and access control, not protocol identification, while the Physical sublayer deals with the actual transmission medium. The Network layer is a separate layer outside the Data Link. So the LLC sublayer is the one that identifies the network-layer protocol used by the frame.

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