Question

The data link layer also corrects errors that may have occurred at the physical layer. (True/False)

Hint:

The data link layer detects and corrects transmission errors to ensure reliable communication.

Answer 1

True The data link layer (Layer 2 in the OSI model) is responsible for reliable data transfer between two directly connected nodes. One of its key functions is error detection and correction for errors that might occur during transmission at the physical layer (Layer 1). It uses techniques such as checksums, cyclic redundancy checks (CRC), and acknowledgments to detect and sometimes correct errors, ensuring that the data received is accurate and reliable.
Thus, the data link layer acts as a safeguard against physical transmission errors by providing error control mechanisms.