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SAI International School

Class-XII

(Topic: Communication and Networking Concepts)

1) What is ARPANET?
2) What is Interspace?

3) Define MAC address.
4) Differentiate between packet switching and message switching technique in network communication.
5) What do you mean by bandwidth of a channel?

6) Differentiate Bus and Star topology. Draw cable layout for both topologies using 5 computers.
7) Differentiate infrared and radio transmission.

8) Discuss advantage and disadvantage of optical fiber over other guided media.
9) Write short note on different types of network.
10) Write short note on role and use of different network devices.

11) What do you mean by data encryption? For what purpose it is used for?
12) Write two characteristics of Wi-Fi.

13) Name the protocol used for
i) Creating connection with a remote machine

ii) For sending an e-mail
14) Identify the Domain name and URL from the following.

http://www.income.in/home.aboutus.hml
15) Write two advantages of using an optical fiber cable over an Ethernet cable to connect two service stations,
which are 190 m away from each other.
16) What is the difference between Trojan Horse and Virus?
17) Define the term bandwidth? Give any one unit of bandwidth.

18) What is VOIP?
19) Differentiate 3G and 4G mobile technologies.

20) Expand the terms: GSM, GPRS
21) Define web hosting.

22) Differentiate authorization and authentication in terms of network security.
23) Differentiate virus, Trojan horse and worm.
24) What is the significance of cookies stored on a computer?

25) Illustrate the layout for connecting 5 computers in a Bus and a Star topology of Networks.
26) Differentiate shareware and freeware.

27) What is ethical hacking?
28) Write any two important characteristics of cloud computing.

29) Rehaana Medicos Center has set up its new center in Dubai. It has four buildings – Accounts, Store, Research
Lab and Packaging Unit.