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Express Learning: Data Communications and Computer Networks by ITL Education Solutions Limited

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1

Overview of Data Communications and Networking

1. What is the difference between communication and transmission?

Ans: Both communication and transmission deal with the exchange of information. However, a few differences between them are listed in Table 1.1.

Table 1.1 Differences Between Communication and Transmission

  Communication          Transmission
• It refers to exchange of meaningful information between two communicating devices. • It refers to the physical movement of information.
• It is a two-way scheme. • It is a one-way scheme.

2. What is meant by data communication? What are the characteristics of an efficient data communication system?

Ans: Data communication refers to the exchange of data between two devices through ...

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