please do not use handwriting for the answer

What do we mean by data communication. How the data can be transfer from the source to the destination.

What are the reasons that may imply the use of a modem?

What is the difference between an analog and a digital signal.

What is the difference between a circuit switching and a packet switching network? Give examples of networks based on these two switching types.

The role of the network medium in a computer network and some examples of network mediums used in LANs

Explain the differences between a LAN, internetwork, Internet, WAN, and MAN.

What is the difference between unicast, multicast, and broadcast communication

What is Client-server network? Explain why the line between a client and a server has become blurred in today's operating systems.