Synchronous Data Link Control (SDLC) is a bit-oriented synchronous communication protocol used for transmitting data over point-to-point and multipoint links. It was developed by IBM in the 1970s as a way to facilitate reliable and efficient data transmission in telecommunications. ### Key Features of SDLC: 1. **Synchronous Communication**: SDLC operates synchronously, meaning that data is transmitted in a continuous stream along with a clock signal.
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