CHAPTER 1 3 INFORMATIC PRACTICES XII WEB.pdf
After learning this chapter the students will be able to:
Define what a Computer Network is
List the benefits of networking
List different wired and wireless media for communication
Identify different network devices
Identify the type of network on the basis of area covered
Describe various terms associated with computer networks.
List various security threats to computer networks
List the preventive and corrective measures against these threats
Have you ever worked on Internet? Have you ever used an ATM? Have you ever
given the print command on a computer to get the printout on a printer attached
to some other computer? Have you ever transferred songs from your computer to a
cell phone or vice-versa? If the answer to any of these questions is YES, then you
have experienced and utilized the services of a computer network. In this chapter
you will study about various types of computer networks, their benefits, and what
is required to create computer networks.
Can you place 10 coins in such a way that they lie in 5 straight lines and on each line there
are exactly 4 coins?
Such situations are faced by the designers of computer networks. They have to think of
various ways of interconnecting the computers so that the specific goals of network setup