Question

What is the minimum number of wires needed to send data over a serial communication link.

• A. 1
• B. 2
• C. 4
• D. 6

Answer 1

The correct option is B 2

The minimum number of wires needed to send data over a serial communication link is 2.

Serial communicationis the process of sending data one bit at a time, sequentially, over a communication channel or computer bus. This is in contrast to parallel communication, where several bits are sent as a whole, on a link with several parallel channels.

Serial communication is used for all long-haul communication and most computer networks, where the cost of cable and synchronization difficulties makes parallel communication impractical.