Operating System Questions

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261.

........ interface consists of thing like program counter, register, interrupts and terminal

A

Hardware

B

Software

C

Data

D

None

Correct Answer: A

Hardware interface consists of thing like program counter, register, interrupts and terminal

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262.

....... show characteristics with both hardware and software

A

Operating system

B

Software

C

Data

D

None

Correct Answer: A

Operating system show characteristics with both hardware and software

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263.

Which of the following command is used to switch between the window programs?

A

Alt+Tab

B

Alt+F4

C

Ctrl+Tab

D

None of the above

Correct Answer: A

Alt+Tab command is used to switch between the window programs

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264.

To prevent the addition and deletion of files on a disk or tape we use

A

Format

B

Write protect

C

Create back up

D

None of above

Correct Answer: B

Write protection is the term used to denote the locking mechanism which prevents modification or deletion of data on a storage device. Write protection helps in the preventing accidental and intentional data modification and also helps protect against virus attacks.

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265.

During the boot process, the ..... looks for the system file

A

CD

B

BIOS

C

CPU

D

DVD

Correct Answer: B

During the boot process, the 'BIOS' looks for the system file

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266.

Which of the following resources must be protected by the operating system?

A

I/O

B

Memory

C

CPU

D

All of the above

Correct Answer: D

None.

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267.

What are the two types of Semaphore?

A

Digital Semaphores and Binary Semaphores

B

Analog Semaphores and Octal Semaphores

C

Counting Semaphores and Binary Semaphores

D

Critical Semaphores and System Semaphores

Correct Answer: C

Semaphore is a simply a variable. This variable is used to solve critical section problem and to achieve process synchronization in the multi processing environment. The two most common kinds of semaphores are counting semaphores and binary semaphores. Counting semaphore can take non-negative integer values and Binary semaphore can take the value 0 & 1. only.

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268.

Who is called a supervisor of computer activity?

A

CPU

B

OS

C

Control Unit

D

Application Program

Correct Answer: B

OS is called a supervisor of computer activity.

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269.

Font folder is located on

A

Program folder

B

Ms Word file

C

Control Panel folder

D

Desktop folder

Correct Answer: C

Font folder is located on 'Control Panel folder'.

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270.

From where do you change mouse setting?

A

Setting >> mouse

B

Hardware setting

C

Control panel >> mouse

D

None of the above

Correct Answer: C

None.

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