1000+ Operating System MCQ (Multiple Choice Questions) Part 1

1. In real time operating system ____________

A

Process scheduling can be done only once

B

All processes have the same priority

C

kernel is not required

D

A task must be serviced by its deadline period

Answer:

The correct option is D.

Note
Description: NO comment

2. UNIX operating system

A

Can run on PC’s and larger system

B

is multitasking

C

is multiuser

D

all of these

Answer:

The correct option is D.

Note
Description:

3. In Unix, which system call creates the new process?

A

create

B

fork

C

new

D

none of the mentioned

Answer:

The correct option is B.

Note
Description: In UNIX, a new process is created by fork() system call. fork() system call returns a process ID which is generally the process id of the child process created

4. Network operating system runs on ___________

A

Every system in the network

B

Sserver

C

Both server and every system in the network

D

None of the mentioned

Answer:

The correct option is B.

Note
Description:

5. What are the types of distributed operating systems?

A

Zone based Operating system

B

Level based Operating system

C

Network Operating system

D

All of the mentioned

Answer:

The correct option is C.

Note
Description: None

6. Whenever a process needs I/O to or from a disk it issues a ______________

A

system call to the operating system

B

a special procedure

C

system call to the CPU

D

All of the mentioned

Answer:

The correct option is A.

Note
Description: None

7. 100. Windows displays various options to shut down. Which is suitable at the end of the day?

A

Shut Down

B

Restart

C

Sleep

D

Hibernate

Answer:

The correct option is A.

Note
Description:

8. Which of the following is suitable after you install new drivers?

A

Shut Down

B

Restart

C

Sleep

D

Hibernate

Answer:

The correct option is B.

Note
Description:

9. Underlined text, such as text and folder names is referred to as

A

Hyperlink

B

Menu

C

Source drive

D

None of these

Answer:

The correct option is A.

Note
Description:

10. When a peripheral device needs immediate attention from the operating system, it generates

A

Interrupt

B

Spool

C

Stack

D

Page file

Answer:

The correct option is A.

Note
Description:

11. Taskbar is used for

A

Navigation program

B

Switching between program

C

Start a program

D

All of above

Answer:

The correct option is B.

Note
Description:

12. To install the new font

A

Start -> setting -> control panel -> font

B

Start -> setting -> control panel -> font -> install new font

C

Start -> control panel -> font -> install new font

D

Start -> setting -> font

Answer:

The correct option is B.

Note
Description:

13. The information about all files is kept in ____________

A

Operating system

B

Separate directory structure

C

swap space

D

None of the above

Answer:

The correct option is B.

Note
Description:

14. The operating system _______ the links when traversing directory trees, to preserve the acyclic structure of the system.

A

Deletes

B

Considers

C

Ignores

D

None of the mentioned

Answer:

The correct option is .

Note
Description:

15. On systems where there are multiple operating system, the decision to load a particular one is done by _____________

A

Process control block

B

file control block

C

Boot loader

D

Bootstrap

Answer:

The correct option is C.

Note
Description:

16. The FCFS algorithm is particularly troublesome for ____________

A

Operating systems

B

Multiprocessor systems

C

Time sharing systems

D

Multiprogramming systems

Answer:

The correct option is C.

Note
Description: In a time sharing system, each user needs to get a share of the CPU at regular intervals

17. If a process fails, most operating system write the error information to a ______

A

New file

B

Another running process

C

Log file

D

None of the mentioned

Answer:

The correct option is C.

Note
Description: If a process fails, most operating systems write the error information to a log file. Log file is examined by the debugger, to find out what is the actual cause of that particular problem. Log file is useful for system programmers for correcting errors

18. Which one of the following is not a real time operating system?

A

RTLinux

B

Palm OS

C

QNX

D

VxWorks

Answer:

The correct option is B.

Note
Description: VxWorks, QNX and RTLinux are real-time operating systems. Palm OS is a mobile operating system. Palm OS is developed for Personal Digital Assistants (PDAs).

19. What does OS X has?

A

Monolithic kernel with modules

B

Microkernel

C

Monolithic kernel

D

Hybrid kernel

Answer:

The correct option is D.

Note
Description: OS X has a hybrid kernel. Hybrid kernel is a combination of two different kernels. OS X is developed by Apple and originally it is known as Mac OS X.

20. In operating system, each process has its own __________

A

Open files

B

Pending alarms, signals, and signal handlers

C

Address space and global variables

D

All of the mentioned

Answer:

The correct option is D.

Note
Description: In Operating Systems, each process has its own address space which contains code, data, stack, and heap segments or sections. Each process also has a list of files that is opened by the process as well as all pending alarms, signals, and various signal handlers.