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    • ( 41 ) Under multiprogramming, turnaround time for short jobs is usually ________ and that for long jobs is slightly ___________.

    • 1) Lengthened; Shortened
    • 2) Shortened; Lengthened
    • 3) Shortened; Shortened
    • 4) Shortened; Unchanged
    • Discussion in forum
      Answer : 2) Shortened; Lengthened
      Solution : Under multiprogramming, turnaround time for short jobs is usually Shortened and that for long jobs is slightly Lengthened .








      discussion


      Answer : 2) Shortened; Lengthened

    • ( 42 ) Complex scheduling algorithms :

    • 1) are very appropriate for very large computers
    • 2) use minimal resources
    • 3) use many resources
    • 4) All of these
    • Discussion in forum
      Answer : 1) are very appropriate for very large computers
      Solution : Complex scheduling algorithms are very appropriate for very large computers.








      discussion


      Answer : 1) are very appropriate for very large computers

    • ( 43 ) The content of the matrix Need is :

    • 1) Allocation - Available
    • 2) Max - Available
    • 3) Max - Allocation
    • 4) Allocation - Max
    • Discussion in forum
      Answer : 3) Max - Allocation
      Solution : The content of the matrix Need is Max - Allocation








      discussion


      Answer : 3) Max - Allocation

    • ( 44 ) The data structures available in the Banker's algorithm are :

    • 1) Available
    • 2) Need
    • 3) Allocation
    • 4) All of these
    • Discussion in forum
      Answer : 4) All of these
      Solution : The data structures available in the Banker's algorithm are :
      Available: vector [1..m], Available[ j ] - the number of instances currently available for resource j.
      Max: matrix[1..n, 1..m], Max[ i, j ] - the maximum number of instances of resource j that process i can request at any one time.
      Allocation: matrix[1..n, 1..m] - process i currently holds Allocation[ i, j ] instances of resource j.
      Need: matrix[1..n, 1..m] - process i may need additional Need[ i, j ] instances of resource j.








      discussion


      Answer : 4) All of these

    • ( 45 ) Cancelling a thread asynchronously :

    • 1) may not free each resource
    • 2) frees all the resources properly
    • 3) spoils the process execution
    • 4) None of these
    • Discussion in forum
      Answer : 1) may not free each resource
      Solution : Cancelling a thread asynchronously may not free each resource.








      discussion


      Answer : 1) may not free each resource

    • ( 46 ) When one thread immediately terminates the target thread, it is called :

    • 1) Asynchronous cancellation
    • 2) Sudden Termination
    • 3) Systematic cancellation
    • 4) Deferred cancellation
    • Discussion in forum
      Answer : 1) Asynchronous cancellation
      Solution : When one thread immediately terminates the target thread, it is called Asynchronous cancellation.








      discussion


      Answer : 1) Asynchronous cancellation

    • ( 47 ) Which of the following state transitions is not possible ?

    • 1) blocked to running
    • 2) ready to running
    • 3) blocked to ready
    • 4) running to blocked
    • Discussion in forum
      Answer : 1) blocked to running
      Solution : blocked to running is not possible because if any process is in block state so is follow sequence is : BLOCKED then SUSPEND BLOCKED, SUSPEND BLOCKED then SUSPEND READY, SUSPEND READY then READY .








      discussion


      Answer : 1) blocked to running

    • ( 48 ) The degree of multi-programming is :

    • 1) the number of processes executed per unit time
    • 2) the number of processes in the ready queue
    • 3) the number of processes in the I/O queue
    • 4) the number of processes in memory
    • Discussion in forum
      Answer : 4) the number of processes in memory
      Solution : The degree of multi-programming is depends on the number of processes in memory.








      discussion


      Answer : 4) the number of processes in memory

    • ( 49 ) To install the new font

    • 1) Start -> setting -> control panel -> font
    • 2) Start -> setting -> control panel -> font -> install new font
    • 3) Start -> control panel -> font -> install new font
    • 4) Start -> setting -> font
    • Discussion in forum
      Answer : 2) Start -> setting -> control panel -> font -> install new font
      Solution : To install the new font follow Start -> setting -> control panel -> font -> install new font








      discussion


      Answer : 2) Start -> setting -> control panel -> font -> install new font

    • ( 50 ) Which of the following is not the state of a process ?

    • 1) New
    • 2) Old
    • 3) Waiting
    • 4) Running
    • Discussion in forum
      Answer : 2) Old
      Solution : 1 New: The process is being created.
      2 Ready :The process is waiting to be assigned to a processor. Ready processes are waiting to have the processor allocated to them by the operating system so that they can run.
      3 Running :Process instructions are being executed (i.e. The process that is currently being executed).
      4 Waiting :The process is waiting for some event to occur (such as the completion of an I/O operation).
      5 Terminated :The process has finished execution.








      discussion


      Answer : 2) Old





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