This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Transmission of Digital Data – parallel, serial, synchronous, asynchronous Transmission”.

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1. In _______ transmission of data, a group of n bits are sent simultaneously.

  • parallel
  • synchronous
  • asynchronous
  • serial

2. In _______ transmission, if n bits are being sent simultaneously, n communication channels are needed

  • parallel
  • synchronous
  • asynchronous
  • serial

3. Serial transmission can be _______

  • parallel
  • synchronous
  • asynchronous
  • b or c

4. _______ transmission features start bits, stop bits, and gaps between data units

  • Parallel
  • Synchronous
  • Asynchronous
  • Virtual

5. Asynchronous transmission features _______

  • start bits
  • stop bits
  • gaps between data units
  • all of the above

6. Data transmission between the keyboard and the computer is usually _______

  • parallel
  • synchronous
  • asynchronous
  • virtual

7. Serial transmission without stop bits, start bits, or gaps is called _______ transmission

  • parallel
  • synchronous
  • asynchronous
  • virtual

8. In parallel transmission, if we are sending 80 Kbps (on each line), we send _______ characters per second

  • 80,000
  • 10,000
  • 40,000
  • none of above

9. In synchronous serial transmission, if we are sending 80 Kbps, we send _______ characters per second.

  • 80,000
  • 10,000
  • 40,000
  • none of above

10. In asynchronous serial transmission, if we are sending 100 Kbps, we send _______ characters per second.

  • 80,000
  • 10,000
  • 40,000
  • none of above
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