COMPUTER AWARENESS PRACTICE MCQs

1. A scanner converts the image that it sees into numeric digit before storing it in the computer. This conversion process is known as? 1. Modulation 
2. Digitization
3. Reverberation 
4. Contribution
5. Creation

2. __ recognition systems enables physically disable people to use computer? 
1. Scanner 
2. Ink jet printers
3. Speech recognition
4. Main frame comuter
5. None of these

3. Which among the following statements are true regarding the laser? 
1. The laser recreates the image on a negatively charged drum. Which will collect Ink that is positively charged to attract to the areas of the image.
2. A dot-matric printers creates, the characters it prints.
3. The capture image virtually & print
4. They determine the size of the objects 
5. All the above

4. The earliest calculating devices are ? 1. Calculators 
2. Super computers
3. Abacus 
4. Minicomputers
5. Micro Computers

5. ___can scan typed documents, pictures, graphics or even handwriting into a computer?  1. Launching Machine 
2. Modulating Machine
3. Optional Scanners 
4. Voice-recognition devices
5. None of these

6. Graphic display is made up of a series of dots called ____ whose pattern produces the images?1. Trick cels 
2. Lead cells
3. Pixel 
4. Inkers 
5. Lines

7. The components of cathode Ray Tube (CRT) Display are? 1. Electrongun 
2. Electron beam controlled by an electro magnetic field
3. A phosphor coated display screen
4. Only option 1 is correct 
5. All 1,2,3, are correct

8. CGA (Color Graphic Adapter), MDA (Monochrome Display Adapter), HGA (Herc-ules Graphic Adapter), EGA (Enhanced Graphic (Adapter) are examples of? 
1. CRT (Cathode Ray Tube)
2. Motor cycle 
3. Screens 
4. Drum printers 
5. All the above

9. _____ is determined by the number of pixels horizontally & vertically? 1. Reverberation 
2. Recognition
3. Reconciliation 
4. Resolution
5. Reflection

10. The major advantage of LCD (Liquid Crystal display) is?1. High energy consumption
2. Low energy consumption
3. No energy consumption 
4. Average energy consumption
5. None of these

11. _____ are most commonly used for large group presentations? 1. Projection Displays 
2. Hard disk
3. Floppy disk 
4. CPU 
5. All the above

12. The main memory also known as the primary memory is a part of the CPU & is combination of both?1. REN & RAMP 
2. RAM & ROM
3. Only RAM 4. Only ROM
5. Keyboard & Monitor

13. Which of the following statements are correct regarding RAM ? 1. It is volatile in nature & can read & write data
2. The information is lost as soon as the System is shut down unless saved
3. It is used to store programs & data during the computers operation
4. It is a permanent data 
5. Only 1,2,3 are correct

14. Which of the following statements are true regarding ROM? 1. It is read only memory 
2. It is non-volatile
3. It is used to store permanent programs 
4. It is main memory 
5. All the above

15. Access mode means?  1. How easily they are accessible
2. How easily they are deniable
3. How easily they are convertible
4. How easily they are defensible
5. None of these

16.Access time means?  1. The maximum time required to reach storage location
2. The average time required to reach a storage location & obtain its content
3. The time taken to destroy the elements
4. The average time required to delete the storage
5. None of these

17. Transfer rate can be defined as ? 1. The number of characters or words that a device can transfer per second
2. The number of characters or words that a device cannot transfer
3. The time taken to transfer an employ
4. Only 3 is correct 
5. All the above

18.Cache memory is a part of ?1. CPU 
2. Monitor 
3. Key board 
4. Mouse 
5. All the above

19.____ lies in the path between the processor & the main memory? 1. Cake memory 
2. Cache memory
3. Cane memory 
4. Cat memory
5. cathode memory

ANSWERS:
1. 2, 2. 3, 3. 1, 4. 3, 5. 3, 6. 3, 7. 5, 8. 1, 9. 4, 10. 2, 
11. 1, 12. 2, 13. 5, 14. 5, 15. 1,  16. 2, 17. 1, 18. 1, 19. 2