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shaista



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8th Class Computer Paper 1st 2 chapters Empty
PostSubject: 8th Class Computer Paper 1st 2 chapters   8th Class Computer Paper 1st 2 chapters EmptyMon Dec 08, 2014 6:16 pm

    GHAZI CADET HIGH SCHOOL (Regd)
St No. 2, Rifle Range Road, Korey Stop Walton Road Lahore Cantt
Ph: 03026371897, bittahir@gmail.com, https://sites.google.com/site/sirtahirfarooq
Class: 8th
Paper: COMPUTER
Q.1. Fill in the blanks. (01 x 10 = 10)
1. A computer network consists of ______________ basic components.
2. NIC stands for ___________________________________.
3. ________________________ is global navigation satellite system.
4. An e-mail virus is a computer code sent as ________________ to other computers.
5. Software which has been duplicated and distributed without authorization is called ______________ software.
6. ______________ is a file created by Excel spreads sheet application.
7. Next to the Microsoft Office Button is ___________________.
8. _____________ Box displays the reference of the active cell.
9. _____________ are the graphical representation of data entered in a worksheet.
10. People who indulge themselves in hacking activities are called _____________.

Q.2. Match Column A with Column B. (01 x 10 = 10)

Column A                Column B               Column C
Sending Device                Coaxial Cable
Communication Device      NIC
Transmission Media           Glass threads
Network                           A Computer
Fiber Optic                        Modem
Virus                                Current viruses
Hacker                             Malicious program
Pirated Software                Adware
Virus definitions                 Steals Password
Antivirus                           AVG
                                        Illegal copying

Q.3. Answer the following questions. (Any TEN) (3 x 10 = 30)
1. What is Antivirus?
2. Who is hacker? What can a hacker do?
3. Differentiate between LAN and WAN.
4. What is Satellite Communication?
5. Name different types of transmission media.
6. Write a short note on GPS.
7. List some effects / indicators of security threats.
8. Discuss different components of a computer network.
9. How a Modem works? Show diagrammatically.
10. What is coaxial cable? Write its characteristics.
11. What is difference between virus and worms?
12. Write a short note on Bluetooth.
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