Data Link Layer: The second layer of the OSI model handles the transfer of data between adjacent network nodes within a wide area network (WAN) or between nodes on the same local area network (LAN) segment. It encompasses the protocols and methods used to ensure an error-free transmission through physical addressing, data framing, network topology, error detection, and handling retransmissions. The Data Link Layer is subdivided into two sublayers – the Logical Link Control (LLC) layer and the Media Access Control (MAC) layer.
Categories: CC D4: Network Security | CCSP D3: Cloud Platform and Infrastructure Security | CISM D3: Information Security Program | CISSP D4: Communication and Network Security | Security+ D3: Security Architecture | SSCP D6: Network and Communication Security
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