Define the term Computer Network. What is the goal of computer networking?
Computer Network:
i)
A collection of autonomous computers interconnected
by a single technology.
ii)
Interconnected means they are able to exchange information.
iii)
Copper wire, fiber optics, microwaves, inferred and communication
satellite can be used for connection.
GOALS OF NETWORKING
Ø Resource and load sharing
ü Programs do not need to run on a single machine
Ø Reduced cost
ü Several machines can share printers, tape drives, etc.
Ø High reliability
ü If a machine goes down, another can take over
Ø
Mail and communication
Identify the five components of a data communications system.
1.
Message. The message is the information (data) to be
