Monday, 9 November 2015

Computer Knowledge For CWE-Clerks-V- Main Examination Test-34

1. What type of virus use computer hosts to reproduces it?
(1) Time bomb
(2) worm
(3) Melissa virus
(4) Macro virus
(5) None of these


2. ---------- is a signaling method that handles a relatively wide range of frequencies.
(1) Broadband 
(2) DLF
(3) Dial-up  
(4) both 1& 3
(5) None of these

3. Block on buffer caches are used:
(1) to handle interrupts
(2) to increase capacity of main memory
(3) to improve disk performance
(4)to speed up main memory read operation
(5) None of these

4. The term --- designate equipment that might be added  to a computer system to enhance. Its functionality.
(1) Digital device
(2) system add
(3) Disk pack
(4) Peripheral device
(5) None of these

19. A disk content that is recorded at the time of manufacture and that cannot be changed or erased by the user.
(1) READ ONLY
(2) Memory only
(3) Run only
(4) WRITES ONLY
(5) None of these

5. A device designed to read information encoded onto a small plastic card is .
(1) light pen
(2) pun chard  card
(3) magnetic  tape
(4) magnetic
(5) badge reader

6. The OCR is used for the preparation of
(1) electricity bills
(2) insurance premium
(3) telephone bills
(4) All of these
(5) None of these

7. Speed of line printer is limited by the speed of
(1) paper movements
(2) cartridge used
(3) length of paper
(4) All of these
(5) None of these

8. In laser printers, printing is achieved by deflecting laser beam on to surface of a drum
(1) magnetized
(2) photosensitive
(3) magnetic
(4) Either (1)or (2)
(5) None of these

9. Resolution of laser printer is specified in terms of
(1) DPI
(2) LPM
(3) CPM
(4) PPM
(5) None of these

10. The binary equivalent of decimal number 98 is
(1) 1110001
(2) 1110100
(3) 1100010
(4) 1111001
(5) None of these

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