The Data Link Layer is the second layer in the OSI model, responsible for node-to-node data transfer, error detection and correction, and framing.
• It ensures reliable and efficient communication between adjacent network nodes.
Key Functions of the Data Link Layer
- Framing: Encapsulates network layer data into manageable frames.
- Error Detection and Correction: Ensures accurate delivery of frames.
- Media Access Control (MAC): Controls how devices share access to the transmission medium.
- Flow Control: Prevents overwhelming a receiver with data.
- Addressing: Assigns physical (MAC) addresses to devices.
