1) What do you mean by data communication?

2) prepare down the three criteria which are essential for an effective and efficient network.

3) Create a group the OSI layers by function.

4) prepare down the features provided by layering.

5) What are the two interfaces provided by protocols?

6) What do you mean by flow Control?

7) Define Error detection and correction.

8) Describe the use of two dimensional parity in error detection.

9) What are the issues in data link layer?

10) What are the different encoding techniques?

11) prepare down the different physical media?

12) prepare down the ways to address the framing problem.