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In asynchronous serial communication the physical layer provides ___________(a) start and stop signalling(b) flow control(c) both start & stop signalling and flow control(d) only start signalling

Answer» The correct option is (c) both start & stop signalling and flow control

The best explanation: In asynchronous serial communication, the communication is not synchronized by clock signal. Instead of a start and stop signaling and flow control method is followed. Unlike asynchronous serial communication, in synchronous serial communication a clock signal is used for communication, so the start and stop method is not really required.


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