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    a process which is copied from main memory to secondary memory on the basis of requirement is known as

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    Question

    ________ is the concept in which a process is copied into main memory from the secondary memory according to the requirement.

    A

    Paging

    B

    Demand paging

    C

    Segmentation

    D

    Swapping

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    Operating System MCQ (Multiple Choice Questions)

    Here's the list of 50+ Operating System MCQ along with Answers to brush your skills.

    Operating System MCQ

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    An operating system provides a platform on which other applications programs can be installed. It also provides the environment within which programs are executed. It can be termed as a program or system software that acts as an intermediary between user and hardware.

    Resource Manager/Allocator - It manages the system resources in an unbiased fashion in both hardware(mainly CPU time, memory, system buses) and software(access, authorization, semaphores) and provides the functionality to application programs.

    Operating System controls and coordinates the use of resources among various application programs.

    Computer Hardware - CPU, Memory units, I/O devices, system bus, registers, etc, provides the basic computing resources.

    System and Application Programs - Defines the way in which these resources are used to solve the computing problems of the user.

    Functions of Operating System

    Process Management Memory Management

    I/O device management

    File Management Network Management

    Security and Protection

    Types of Operating Systems

    Batch Operating System

    To speed up the processing job with similar types, the tasks are batched together and were run through the processor as a group batch.

    In some operating systems, grouping is done by the operator while in some systems, it is performed by the Batch Monitor resisted in the low end of the main memory.

    The jobs are bundled into batches with similar requirements.

    Then the submitted jobs were grouped as FORTRAN jobs, COBOL jobs, etc.

    Multiprogramming Operating System

    A single program cannot, in general, keep either the CPU or the I/O devices busy all times. The basic idea of a multiprogramming operating system is it keeps several jobs in the main memory simultaneously.

    The OS picks and begins to execute one of the jobs in memory. Eventually, the jobs may have to wait for some task, such as an I/O operation, to complete.

    Multitasking Operating System

    In the modern OS, we are able to play MP3 music, edit documents, surf the web all running at the same time.

    For multitasking to take place, firstly there should be multiprogramming i.e. presence of multiple programs for execution. And secondly the concept of time-sharing.

    Real-Time Operating System

    A real-time system is a time-bound system that has well-defined fixed time constraints. Processing must be done within the defined constraints or the system will fail.

    RTOS is intended to serve real-time applications that process data as it comes in, typically without buffer delays. It is used in an environment where a large number of events must be accepted and processed in a short time.

    Resources

    Practice Coding

    OS Interview Questions

    Features of Operating System

    Components of Operating System

    Operating System MCQ

    1.

    Which of the following are CPU scheduling algorithms?

    All of the above are CPU scheduling algorithms

    2. Operating systems

    OS acts as an interface between the user.

    3.

    A process which is copied from main memory to secondary memory on the basis of

    requirement is known as -

    The process which is copied from main memory to secondary memory on the basis of requirement is known as demand paging.

    4.

    FIFO scheduling is a type of:

    FIFO is a type of non-preemptive scheduling.

    5.

    Which of the type of OS reads and reacts in terms of actual time?

    RTOS 6.

    A systematic procedure for moving the CPU to new process is known as-

    Multiple processes are run in parallel in CPU. Sometimes when a high priority process comes up, the kernel transfers control of the CPU to that process.

    7.

    UNIX is written in which language?

    UNIX is written in C language. It was developed in 1970s at AT & T Bell laboratories.

    8. Thread is a

    A thread is the smallest unit of processing that can be performed in an OS. It is a light weight process.

    9.

    OS classifies the threads as-

    OS classifies the threads into two types - User level thread: Implemented by user and Kernel level thread, implemented by the kernel.

    10.

    Among the following CPU scheduling algorithms, which of these allocated the CPU first to the process that requests the CPU first?

    FCFS allocates resources to the process that requests first.

    11.

    What are the two types of operating modes of AT?

    Two operating modes of AT are Real mode and protected mode.

    12.

    Which of the following schedules threads?

    Thread scheduling is done by OS.

    13.

    What is meant by ready state of a process?

    Ready state of the process means the process has all necessary resources which are required for execution of that process when CPU is allocated.

    14.

    Among the following, which is an example of a spooled device?

    A line printer that prints the output of a number of jobs is an example of a spooled device.

    15.

    Main memory of a computer system is?

    Main memory of a computer system is volatile.

    16.

    For which of the following purposes in Banker’s algorithm is used?

    Banker's Algorithm is mainly used to prevent deadlock.

    17.

    Device driver required in?

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    Virtual Memory

    This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Virtual Memory”. 1. Because of virtual memory, the memory can be shared among ____________ a) processes b) threads c) instructions d) none of the mentioned 2. _____ is the concept in which a process is copied into the main memory from the ... Read more

    Operating System Questions & Answers – Virtual Memory

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    This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Virtual Memory”.

    1. Because of virtual memory, the memory can be shared among ____________

    a) processes b) threads c) instructions

    d) none of the mentioned

    View Answer

    2. _____ is the concept in which a process is copied into the main memory from the secondary memory according to the requirement.

    a) Paging b) Demand paging c) Segmentation d) Swapping View Answer

    3. The pager concerns with the ____________

    a) individual page of a process

    b) entire process c) entire thread

    d) first page of a process

    View Answer

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    4. Swap space exists in ____________

    a) primary memory b) secondary memory c) cpu

    d) none of the mentioned

    View Answer

    5. When a program tries to access a page that is mapped in address space but not loaded in physical memory, then ____________

    a) segmentation fault occurs

    b) fatal error occurs

    c) page fault occurs

    d) no error occurs View Answer

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    6. Effective access time is directly proportional to ____________

    a) page-fault rate b) hit ratio

    c) memory access time

    d) none of the mentioned

    View Answer

    7. In FIFO page replacement algorithm, when a page must be replaced ____________

    a) oldest page is chosen

    b) newest page is chosen

    c) random page is chosen

    d) none of the mentioned

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    8. Which algorithm chooses the page that has not been used for the longest period of time whenever the page required to be replaced?

    a) first in first out algorithm

    b) additional reference bit algorithm

    c) least recently used algorithm

    d) counting based page replacement algorithm

    View Answer

    9. A process is thrashing if ____________

    a) it is spending more time paging than executing

    b) it is spending less time paging than executing

    c) page fault occurs

    d) swapping can not take place

    View Answer advertisement

    10. Working set model for page replacement is based on the assumption of ____________

    a) modularity b) locality c) globalization d) random access View Answer

    Sanfoundry Global Education & Learning Series – Operating System.

    Here’s the list of Best Books in Operating System.

    To practice all areas of Operating System, here is complete set on 1000+ Multiple Choice Questions and Answers on Operating System.

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    Next Steps:

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    Chapterwise Practice Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

    Chapterwise Mock Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

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