Fragmentation is
Correct!
Wrong!
Critical region is
Correct!
Wrong!
In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the RUNNING state to the
Correct!
Wrong!
Pre-emptive scheduling, is the strategy of temporarily suspending a running process [A] [B] [C] [D] Comment Answer: Option [C]
Correct!
Wrong!
Some computer systems support dual mode operation—the user mode and the supervisor or monitor mode. These refer to the modes
Correct!
Wrong!
In Round Robin CPU scheduling, as the time quantum is increased, the average turn around
Correct!
Wrong!
Suppose that a process is in ‘BLOCKED’ state waiting for some I/O service. When the service is completed, it goes to the
Correct!
Wrong!
To obtain better memory utilization, dynamic loading is used. With dynamic loading a routine is not loaded until it is called for. For implementing dynamic loading,
Correct!
Wrong!
Semaphores are used to solve the problem of
Correct!
Wrong!
Dijkstra’s banking algorithm in an operating system solves the problem of
Correct!
Wrong!
The only state transition that is initiated by the user process itself is
Correct!
Wrong!
Kernel is
Correct!
Wrong!
Virtual memory is
Correct!
Wrong!
Overlay is
Correct!
Wrong!
Sector interleaving in disks is done by
Correct!
Wrong!
Dirty bit is used to show the
Correct!
Wrong!
) The first-fit, and the worst-fit algorithm can be used for
Correct!
Wrong!
In a paged memory, the page hit ratio is 0.35. The time required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is
Correct!
Wrong!
) In a multi-user operating system, 20 requests are made to use a particular resource per hour on an average. The probability that no requests are made in 45 minutes is
Correct!
Wrong!
Disk scheduling involves deciding
Correct!
Wrong!