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    • ISRO CS 2013

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    Question 1

    What is the right way to declare a copy constructor of a class if the name of the class is MyClass?

    • A

      MyClass (constant MyClass *arg)

    • B

      MyClass (constant MyClass &arg)

    • C

      MyClass (MyClass arg)

    • D

      MyClass (MyClass *arg)

    Question 2

    Which of the following strategy is employed for overcoming the priority inversion problem?

    • A

      Temporarily raise the priority of lower priority level process

    • B

      Have a fixed priority level scheme

    • C

      Implement kernel pre-emption scheme

    • D

      Allow lower priority process to complete its job

    Question 3

    The state of a process after it encounters an I/O instruction is

    • A

      ready

    • B

      blocked

    • C

      idle

    • D

      running

    Question 4

    A starvation free job scheduling policy guarantees that no job indefinitely waits for a service. Which of the following job scheduling policies is starvation free?

    • A

      Priority queuing

    • B

      Shortest Job First

    • C

       First Come First Served 

    • D

      Round robin

    Question 5

    A CPU scheduling algorithm determines an order for the execution of its scheduled processes. Given 'n' processes to be scheduled on one processor, how many possible different schedules are there?

    • A

      n

    • B

      n2

    • C

      n!

    • D

      2n

    Question 6

    Consider the following set of processes, with arrival times and the required CPU-burst times given in milliseconds. 

    Process  Arrival Time  Burst Time
       P1        0             4
       P2        2             2
       P3        3             1

    What is the sequence in which the processes are completed? Assume round robin scheduling with a time quantum of 2 milliseconds

    • A

      P1, P2, P3

    • B

      P2, P1, P3

    • C

      P3, P2, P1

    • D

      P2, P3, P1

    Question 7

    In the Ethernet, which field is actually added at the physical layer and is not part of the frame

    • A

      preamble

    • B

      CRC

    • C

      address

    • D

      location

    Question 8

    What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is 20ns and the propagation time is 30ns?

    • A

      20%

    • B

      25%

    • C

      40%

    • D

      66%

    Question 9

    If the frame to be transmitted is 1101011011 and the CRC polynomial to be used for generating checksum is x4+ x + 1, then what is the transmitted frame?

    • A

      11010110111011

    • B

      11010110111101

    • C

      11010110111110

    • D

      11010110111001

    Question 10

    Ethernet layer-2 switch is a network element type which gives

    • A

      different collision domain and same broadcast domain

    • B

      different collision domain and different broadcast domain

    • C

      same collision domain and same broadcast domain

    • D

      same collision domain and different broadcast domain

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