Data communication requires all of the following EXCEPT:
Correct answer: D. Protocol
- A. Sender
- B. Receiver
- C. Transmission medium
- D. Protocol
Explanation
A protocol is a set of rules that govern how data is communicated between devices. Protocols specify things like the format of the data, the timing of the transmission, and how errors are detected and corrected. While protocols are very important for ensuring reliable data communication, they are not absolutely required. In some very simple data communication systems, data may be transmitted without a formal protocol. However, for most data communication applications, protocols are essential.
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