Question A.

1. What are the three basic forms of network media on which data is represented?

2. Physical layer standards cover four areas

--------------------------------------------------------------------------

Question 2.

Fill in the blanks in the following statements.

The capacity of a medium to carry data is described as the raw data .of the media. Digital bandwidth measures the amount of that can flow from one place to another in a given amount of time.

. is the measure of the transfer of bits across the media over a given period of time.

. is the measure of usable data transferred over a given period of time, and is therefore the measure that is of most interest to network users.

******************************************************************************************************************

Question 3.

What are the two main jobs of the data link layer?

What is the difference between a logical network and a physical network?

What is the difference between full-duplex communication and half-duplex communication?

What is the purpose of the Frame Check Sequence (FCS) in a frame trailer?

-------------------------------------------------------------------------------------------------------------