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Operating System Mcq [SET - 9] | Operating System Mcq with Answers

 

Operating System Mcq with Answers


1. If a process is executing in its critical section, then no other processes can be executing in their critical section. This condition is called

    mutual exclusion
    critical exclusion
    synchronous exclusion

ANSWER= (A) mutual exclusion

 

2. What is the name of the operating system that reads and reacts in terms of actual time?

    Real time system
    Time sharing system
    Quick response system

ANSWER= (A) Real time system

 

3. Run time mapping from virtual to physical address is done by

    memory management unit
    CPU
    PCI

ANSWER= (A) memory management unit

 

4. Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called

    fragmentation
    paging
    mapping

ANSWER= (B) paging

 

5. The ______ register is written by the host to send output.

    status
    control
    data in

ANSWER= (D) data out

 

6. The allocation of processors by process management is also known as the CPU ___

    Managing
    Processing
    Planning

ANSWER= (D) Scheduling

 

7. When a computer is ___ of any software it is just like dead body.

    Amicable
    Devoid
    A machine

ANSWER= (B) Devoid

 

8. Bringing a page into memory only when it is needed,this mechanism is called

    Deadlock
    Page Fault
    Dormant Paging

ANSWER= (D) Demand Paging

 

9. A program used to translate high-level lang. to machine level language is called

     Loader
    Compiler
    Linker

ANSWER= (B) Compiler

 

10. Code files corresponding to the incomplete pension of program area

     Object files
    Exactable
    Complete files

ANSWER= (A) Object files

 

11.Co-Operating has several advantages.

    Modularity
    Information Sharing
    Computation Speedup, Convenience

ANSWER= (D) All of the above

 

12. It is a register and holds the address of the next instruction to be executed.

    Process counter
    Program counter
    CPU register

ANSWER= (B) Program counter

 

13.The main advantage of the interrupt concept is the elimination of

    Spooling
    Polling
    Job scheduling

ANSWER= (B) Polling

 

14. MAR stands for                        

    memory address register
    main address register
    main accessible register

ANSWER= (A)  memory address register

 

15. A circuitry that processes that responds to and processes the basic instructions that are required to drive a computer system is

     memory
     alu
    cu

ANSWER= (D)  processor

 

16. In which ways a macro processor for assembly language can be implemented

    Independent two-pass processor
    Independent one-pass processor
    Processor incorporated into pass 1 of a standard two-pass assembler

ANSWER= (D) All the above

 

17. Which of the following commands should you use to delete files on a linux system?

    Mv
    Expunge
    Delete

ANSWER= (D) Rm

 

18. Any electronic holding place where data can be stored and retrieved later whenever required is                          

    memory
     drive
    disk

ANSWER= (A) memory

 

19.        torage is a system where a robotic arm will connect or disconnect off- line mass storage media according to the computer operating system demands.

    secondary
    virtual
    tertiary

ANSWER= (C) tertiary

 

20. What is the location of the internal registers of CPU?

    internal
    on-chip
    external

ANSWER= (B) on-chip

 

21.If M denotes the number of memory locations and N denotes the word size, then an expression that denotes the storage capacity is                              

    m*n
    m+n
    2m+n

ANSWER= (A) m*n

 

22.  An un-interruptible unit is known as

    single
    atomic
    static

ANSWER= (A)  atomic

 

23. Which one of the following is not a computer language?

    BASIC
    C++
    JAVA

ANSWER= (D) LOTUS

 

24. If the process can be moved during its execution from one memory segment to another, then binding must be                          

    delayed until run time
    preponed to compile time
    preponed to load time

ANSWER= (A) delayed until run time

 

25. The run time mapping from virtual to physical addresses is done by a hardware device called the                          

    virtual to physical mapper
    memory management unit
    memory mapping unit

ANSWER= (B) memory management unit

 

26.  ___ allows plug-in hardware to include boot-time diagnostics, configuration code, and device drivers that will run on any kind of CPU.

     p-code
    Java Virtual Machine (JVM)
    Common Language Runtime (CLR)

ANSWER= (D) Open Firmware

 

27. In the mid-1980s, researches at Carnegie Mellon University developed an operating system called ___ that modularized the kernel using the microkernel approach.

    DOS
     Mac
    Unix

ANSWER= (B) Mac

 

28. Generally when the number of frames available increases, the number of page faults should decrease. Instead, if the page faults also increase, this unexpected result is called ___.

    Charlie’s anomaly
    Belady’s anomaly
    John’s anomaly

ANSWER= (B) Belady’s Anamoly

 

29. PFF stands for ___.

    Page Fault Finder
    Page Finding Frequency
    Page Fault Frequency

ANSWER= (C) Page Fault Frequency

 

30. What does MBR stand for ?

    main buffer register
    memory buffer routine
    main buffer routine

ANSWER= (D) memory buffer register




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