Which Layer Called Error Detection Layer?

Answer: The Data Link layer is often referred to as the error detection layer.

And, Transport Layer is also responsible for error detection and recovery in data communication.

Error Detection

The Data Link layer is responsible for transferring data frames between adjacent network nodes. During this process, it employs error detection techniques to ensure data integrity.

CRC (Cyclic Redundancy Check)

One of the primary methods used for error detection at this layer is CRC. CRC involves appending a checksum to the data frame based on its contents.

Acknowledgments and Retransmissions

The Data Link layer also implements mechanisms like acknowledgments and retransmissions to detect and recover from transmission errors.

Ethernet and Wi-Fi

In Ethernet networks, the Data Link layer is implemented through protocols like Ethernet II or IEEE 802.3, which include error detection mechanisms.

Conclusion

The Data Link layer plays a crucial role in error detection within a network. By implementing techniques like CRC and mechanisms for acknowledgments and retransmissions, it ensures the reliable transmission of data frames between network nodes.