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For real time operating systems, interrupt latency should be __

A. a) zero

B. b) minimal

C. c) maximum

D. d) dependent on the scheduling

Correct answer is: B. b) minimal

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

Leave a Comment | Umar

Hard real time operating system has __ jitter than a soft real time operating system.

A. a) equal

B. b) more

C. c) less

D. d) none of the mentioned

Correct answer is: C. c) less

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

Leave a Comment | Umar

In real time operating system __

A. a) process scheduling can be done only once

B. b) all processes have the same priority

C. c) kernel is not required

D. d) a task must be serviced by its deadline period

Correct answer is: D. d) a task must be serviced by its deadline period

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

Leave a Comment | Umar

The _ presents a uniform device-access interface to the I/O subsystem, much as system calls provide a standard interface between the application and the operating system.

A. a) Device drivers

B. b) I/O systems

C. c) Devices

D. d) Buses

Correct answer is: A. a) Device drivers

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

Leave a Comment | Umar

The operating system maintains a __ table that keeps track of how many frames have been allocated, how many are there, and how many are available.

A. a) memory

B. b) mapping

C. c) page

D. d) frame

Correct answer is: D. d) frame

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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Using transient code, _ the size of the operating system during program execution.

A. a) maintains

B. b) changes

C. c) increases

D. d) decreases

Correct answer is: B. b) changes

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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The operating system and the other processes are protected from being modified by an already running process because __

A. a) every address generated by the CPU is being checked against the relocation and limit registers

B. b) they have a protection algorithm

C. c) they are in different memory spaces

D. d) they are in different logical addresses

Correct answer is: A. a) every address generated by the CPU is being checked against the relocation and limit registers

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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The operating system is responsible for?

A. a) bad-block recoveryb) booting from diskc) disk initializationd) all of the mentioned

B. all of the mentioned

C. The operating system is responsible for:

D.

Correct answer is: B. all of the mentioned

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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The main memory accommodates __

A. a) cpu

B. b) user processes

C. c) operating system

D. d) all of the mentioned

Correct answer is: C. c) operating system

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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Swapping _ be done when a process has pending I/O, or has to execute I/O operations only into operating system buffers.

A. a) must never

B. b) maybe

C. c) can

D. d) must

Correct answer is: A. a) must never

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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A deadlock avoidance algorithm dynamically examines the __ to ensure that a circular wait condition can never exist.

A. a) operating system

B. b) resources

C. c) system storage state

D. d) resource allocation state

Correct answer is: D. d) resource allocation state

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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For an effective operating system, when to check for deadlock?

A. a) every time a resource request is made at fixed time intervals

B. b) at fixed time intervals

C. c) every time a resource request is made

D. d) none of the mentioned

Correct answer is: A. a) every time a resource request is made at fixed time intervals

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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The FCFS algorithm is particularly troublesome for __

A. a) operating systems

B. b) multiprocessor systems

C. c) time sharing systems

D. d) multiprogramming systems

Correct answer is: C. c) time sharing systems

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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The portion of the process scheduler in an operating system that dispatches processes is concerned with __

A. a) assigning ready processes to waiting queue

B. b) assigning running processes to blocked queue

C. c) assigning ready processes to CPU

D. d) all of the mentioned

Correct answer is: C. c) assigning ready processes to CPU

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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Transient operating system code is a code that __

A. a) stays in the memory always

B. b) never enters the memory space

C. c) comes and goes as needed

D. d) is not easily accessible

Correct answer is: C. c) comes and goes as needed

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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When a process is in a “Blocked” state waiting for some I/O service. When the service is completed, it goes to the __

A. a) Terminated state

B. b) Suspended state

C. c) Running state

D. d) Ready state

Correct answer is: D. d) Ready state

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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Cascading termination refers to the termination of all child processes if the parent process terminates __

A. a) Normally or abnormally

B. b) Abnormally

C. c) Normally

D. d) None of the mentioned

Correct answer is: A. a) Normally or abnormally

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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

A. a) Suspended state

B. b) Terminated state

C. c) Ready state

D. d) Blocked state

Correct answer is: C. c) Ready state

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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In operating system, each process has its own __

A. a) open files

B. b) pending alarms, signals, and signal handlers

C. c) address space and global variables

D. d) all of the mentioned

Correct answer is: D. d) all of the mentioned

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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What does OS X has?

a) monolithic kernel with modules
b) microkernel
c) monolithic kernel
d) hybrid kernel

…

What does OS X has?Read More »

Computer Science MCQS Operating System MCQs

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

A. a) RTLinux

B. b) Palm OS

C. c) QNX

D. d) VxWorks

Correct answer is: B. b) Palm OS

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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If a process fails, most operating system write the error information to a __

A. a) new file

B. b) another running process

C. c) log file

D. d) none of the mentioned

Correct answer is: C. c) log file

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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Where is the operating system placed in the memory?

A. a) either low or high memory (depending on the location of interrupt vector)

B. b) in the low memory

C. c) in the high memory

D. d) none of the mentioned

Correct answer is: A. a) either low or high memory (depending on the location of interrupt vector)

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

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

A. a) lack of paper in printer

B. b) connection failure in the network

C. c) power failure

D. d) all of the mentioned

Correct answer is: D. d) all of the mentioned

📖 Read Detailed Explanation →

Computer Science MCQS Operating System MCQs

Leave a Comment | Umar

Which one of the following is not true?

a) kernel remains in the memory during the entire computer session
b) kernel is made of various modules which can not be loaded in running operating system
c) kernel is the first part of the operating system to load into memory during booting
d) kernel is the program that constitutes the central core of the operating system

…

Which one of the following is not true?Read More »

Computer Science MCQS Operating System MCQs

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