1. Fill in the blanks: (1) The full form of UPS is Uninterrupted ______. 2) The monitor should be at a distance of ___feet away from the user. 3) _____ your eyes often and look around to give rest to the eyes. (4) Do not change any computer _______. (5) To detect the virus in a computer, ________program is used.

2. Fill in the blanks: (1) The full form of UPS is Uninterrupted Power Supply. 2) The monitor should be at a distance of 2 feet away from the user. 3) Blink your eyes often and look around to give rest to the eyes. (4) Do not change any computer setting. (5) To detect the virus in a computer, Antivirus program is used.

3. State True or False: (1) Always keep the mouse on mouse pad. Ans: True (2) Computer virus is a hardware. Ans: False (3) Norton, AVG are antivirus programs. Ans: True

4. What us a virus? Ans: Computer virus is a small program, which infects the computer by corrupting the files and uses the computer memory without our knowledge.

5. What is the use of UPS? Ans: If there is a sudden power failure an UPS can supply power for some more time allowing you to safely shut down the computer.

6. Name some of the antivirus programs. Ans: Some name of the antivirus program are: AVG, IBM, QUICK Heal, Norton.

7. How does virus affect the computer? Ans: : Computer virus is a small program which the computer by corrupting files and uses the computer memory without our knowledge. It also infected computer speed and motherboard.

8. Write any three lab rules. Ans: The rules of lab are as follows. 1.Operate the computer, under the guidance of teacher. 2.Do not remove or disconnect any cable. 3.Do not change the display settings of computer.

9. Write any three moral values. Ans: Moral values of computer lab are as follows. (1) Do not change any computer settings. (2) Do not install any software or modify or delete any system file. (3) Do not read or modify other user’s files.

10. What happens if suddenly electricity goes off? Ans: A computer requires a continuous supply of electric power for its working. Both hardware and software may be affected if there is a sudden power failure. Hardware may get permanently damaged while software may get corrupted.

11. What are the precautions taken while sitting in front of the computer? (1) Sit on the chair with your back straight. (2) Do not lean while typing. (3) The monitor should be at least 2 feet away from you.