Which Session layer feature involves the periodic insertion of recovery points into large data transfers?

Which Session layer feature involves the periodic insertion of recovery points into large data transfers?

• A. Checkpointing.
• B. Checksum.
• C. Flow control.
• D. Error control.

Answer: (A)

The chosen answer, checkpointing, is a crucial feature associated with the session layer in networking, particularly when managing large data transfers. Checkpointing involves taking periodic snapshots of the data being transmitted. By creating recovery points at regular intervals, if a disruption occurs during the data transfer—whether due to a network failure, equipment malfunction, or another issue—the system can revert to the last saved checkpoint. This minimizes data loss and allows for a more efficient recovery process as only the data transmitted after the last checkpoint would need to be resent. In contrast, checksum is primarily a technique used to verify the integrity of data by comparing calculated values to ensure that the data has not been altered during transmission. Flow control refers to mechanisms that manage the rate of data transmission between sender and receiver to prevent overwhelming either party. Error control encompasses methods used to identify and rectify errors that occur during data transmission. While these concepts are important in overall data communication, they do not specifically involve the periodic insertion of recovery points like checkpointing does.

The chosen answer, checkpointing, is a crucial feature associated with the session layer in networking, particularly when managing large data transfers. Checkpointing involves taking periodic snapshots of the data being transmitted. By creating recovery points at regular intervals, if a disruption occurs during the data transfer—whether due to a network failure, equipment malfunction, or another issue—the system can revert to the last saved checkpoint. This minimizes data loss and allows for a more efficient recovery process as only the data transmitted after the last checkpoint would need to be resent.

In contrast, checksum is primarily a technique used to verify the integrity of data by comparing calculated values to ensure that the data has not been altered during transmission. Flow control refers to mechanisms that manage the rate of data transmission between sender and receiver to prevent overwhelming either party. Error control encompasses methods used to identify and rectify errors that occur during data transmission. While these concepts are important in overall data communication, they do not specifically involve the periodic insertion of recovery points like checkpointing does.