51. Which of the following is / are function of operating system ?

1. 1. User interface

   
   
   

   2. File system manipulation

   
   
   

   3. Resources allocation

   
   
   

   4. All of the above

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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52. Which of the following is not an operating system ?

1. 1. Windows

   
   
   

   2. DOS

   
   
   

   3. Linux

   
   
   

   4. Unix

   
   
   

   5. CP/M

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   NA

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53. Which of the following is the main program of MS-DOS ?

1. 1. Boot Record

   
   
   

   2. ID sys

   
   
   

   3. MSDOS.sys

   
   
   

   4. Command.com

   
   
   

   5. All of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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54. Multi-processing means

1. 1. tow or more central processing units within a single computer system

   
   
   

   2. two or more programs running at once

   
   
   

   3. two or more input devices connected to a single computer system

   
   
   

   4. two or more tasks carried out by a single computer system

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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55. The main difference between "Windows and DOS is the ability to

1. 1. multitasking

   
   
   

   2. speed up

   
   
   

   3. run a program

   
   
   

   4. run without power

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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