1000+ Advanced Operating System MCQ (Multiple Choice Questions) part 2

1. What is an operating system?

A

Interface between the hardware and application programs

B

Collection of programs that manages hardware resources

C

system service provider to the application programs

D

All of the Above

Answer:

The correct option is D.

Note
Description: An Operating System acts as an intermediary between user/user applications/application programs and hardware. It is a program that manages hardware resources. It provides services to application programs.

2. To access the services of the operating system, the interface is provided by the ___________

A

Library

B

System calls

C

Assembly instructions

D

API

Answer:

The correct option is B.

Note
Description: To access services of the Operating System an interface is provided by the System Calls. Generally, these are functions written in C and C++. Open, Close, Read, Write are some of most prominently used system calls.

3. Operating system is resident in memory of which part?

A

Middle

B

Lower

C

Upper

D

All of these

Answer:

The correct option is C.

Note
Description:

4. Two basic types of operating systems are

A

Batch and interactive

B

Sequential and real time

C

Batch and time share

D

Sequential and direct

Answer:

The correct option is A.

Note
Description:

5. The _______ program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.

A

Main

B

Bootstrap

C

Bootloader

D

Rom

Answer:

The correct option is B.

Note
Description:

6. To recover from failures in the network operations _____________ information may be maintained.

A

operating system

B

IP address

C

Stateless

D

state

Answer:

The correct option is D.

Note
Description:

7. The operating system keeps a small table containing information about all open files called ____________

A

file table

B

Directory table

C

Open-file table

D

System table

Answer:

The correct option is C.

Note
Description:

8. For real time operating systems, interrupt latency should be ____________

A

Zero

B

Minimal

C

Maximum

D

Dependent on the scheduling

Answer:

The correct option is B.

Note
Description: Interrupt latency is the time duration between the generation of interrupt and execution of its service

9. The operating system is responsible for?

A

Bad-block recovery

B

Booting from disk

C

Disk initialization

D

All of the ABOVE

Answer:

The correct option is D.

Note
Description:

10. Context switching is part of

A

Interrupt servicing

B

Interrupt handling

C

Polling

D

Spooling

Answer:

The correct option is B.

Note
Description:

11. Which of the following software is used to simplify using of system software?

A

Multi-tasking

B

Spreadsheet

C

Time sharing

D

Operating environment

Answer:

The correct option is C.

Note
Description:

12. FIFO scheduling is

A

Fair-share scheduling

B

Deadline scheduling

C

Non-preemptive scheduling

D

Preemptive scheduling

Answer:

The correct option is D.

Note
Description: Non-preemptive scheduling

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

A

UNIX

B

CP/M

C

MS-DOS

D

PASCAL

Answer:

The correct option is D.

Note
Description: PASCAL

14. In a timeshare operating system, when the time slot assigned to a process is completed, the process switches from the current state to?

A

Ready state

B

Suspended state

C

Blocked state

D

Terminated state

Answer:

The correct option is A.

Note
Description: In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the Ready State. In a time-sharing operating system, unit time is defined for sharing CPU, it is called a time quantum or time slice. If a process takes less than 1 time quantum, then the process itself releases the CPU.

15. Which one of the following errors will be handle by the operating system?

A

lack of paper in printer

B

connection failure in the network

C

power failure

D

All of the above

Answer:

The correct option is D.

Note
Description: All the mentioned errors are handled by OS. The OS is continuously monitoring all of its resources. Also, the OS is constantly detecting and correcting errors.

16. What is the main function of the command interpreter?

A

To provide the interface between the API and application program

B

To handle the files in the operating system

C

To get and execute the next user-specified command

D

All of the above

Answer:

The correct option is C.

Note
Description: The main function of a command interpreter is to get and execute the next user-specified command. Command Interpreter checks for valid command and then runs that command else it will throw an error.

17. Which of the following Is not a part of the operating system?

A

Input/output control program

B

Job control program

C

Performance monitor

D

Supervisor

Answer:

The correct option is C.

Note
Description: Performance monitor

18. Operating system is a collection of

A

Input-output devices

B

Software routines

C

Hardware components

D

All of thE ABOVE

Answer:

The correct option is B.

Note
Description: Software routines

19. Card reader is an example of

A

Multi-tasking

B

Multiprogramming

C

Batch operating system

D

None of these

Answer:

The correct option is C.

Note
Description: Batch operating system

20. Two operating modes of AT are

A

) Direct mode, indirect mode

B

Virtual mode, dedicated mode

C

Private mode, public mode

D

Real mode, protected mode

Answer:

The correct option is D.

Note
Description: Real mode, protected mode