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GK QUESTION#1311

In asynchronous serial communication, what is the primary function of hardware handshaking (such as RTS/CTS control signals)?

  1. ATo synchronize the internal clocks of communicating devices
  2. BTo encrypt data prior to transmission
  3. CTo detect transmission errors using parity bits
  4. DTo control data flow and prevent buffer overflowCorrect answer
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Answer

D. To control data flow and prevent buffer overflow

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Explanation

Hardware handshaking (RTS/CTS) controls the flow of data between devices. It ensures that the receiving device is ready before data is sent. This prevents buffer overflow and loss of data during transmission. It does not handle clock synchronization, encryption, or parity checking.

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