What does the Synchronous Data Link Control (SDLC) do?

The Synchronous Data Link Control (SDLC) is a protocol that facilitates data communication effectively within a network by allowing the transmission of multiple blocks of data while utilizing a single acknowledgment for the entire batch. This mechanism enhances the efficiency of data transfer by reducing the overhead that comes with sending individual acknowledgments for each block, which is especially beneficial in environments where bandwidth and processing time are critical.

By using a single acknowledgment, SDLC minimizes the need for constant feedback for every data segment, streamlining the flow of data. This method is particularly useful in systems where latency and speed are important considerations. The protocol is designed to handle bit-oriented data and includes error detection and control features, thus ensuring reliable data transfer across various types of networks.

In contrast, options that suggest multiple individual acknowledgments, encryption capabilities, or merely handling network traffic control do not accurately reflect the primary function and effectiveness of SDLC in managing data communication effectively.