Suspending and resuming process

Deadlock handling

Process synchronisation

Process communication

All of the above

Decreasing the number of frames

Increasing the number of frames

Increase in number of page faults

Both (2) and (3)

Both (1) and (3)

Medium Term Scheduler

Short Term Scheduler

Long Term Scheduler

Both (1) and (2)

None of the above

The measurement of work done by completion of number of processes per unit time.

The amount of time that a process spends waiting in the ready queue.

It is the sum of the time spent in waiting in the ready queue, executing by the CPU and doing I/O.

It is the measure of time from the submission of a request till the first response is produced.

None of the above

It is a technique used in linked allocation method of files.

It is a technique of contiguous allocation of files.

It solves the external fragmentation problem in contiguous allocation.

Both (1) and (2)

None of the above

In this mechanism, the information is stored in the virtual memory.

In this mechanism, the information is copied in the faster storage system and can be retrieved further.

In this mechanism, the information is copied in the temporary files.

In this mechanism, the information is stored in the main memory.

Both (2) and (3)

File management

Process control

Information management

Communication

All of the above

MS-DOS

Windows-NT server

MacOS unix

All of the above

Only (2) and (3)

We can easily change the interface of command interpreter, if it is separate from the kernel.

A separate command interpreter prevents the malicious process to gain access to certain part of the kernel.

A separate command interpreter is used for better execution of commands.

All of the above

Only (1) and (2) are true

If the allocated is slightly larger than the requested memory

If the allocated memory is smaller than the requested memory

If the available memory is not contiguous

If the program's address does not end on a page boundary

Both (3) and (4)

To provide multitasking for CPU

To provide resource sharing for the processes

To provide security to the operating system

All of the above

Only (1) and (2)

Downloading viral program form internet

Emails

Spamming

All of the above

Both (1) and (2)

Trap door

Logic bomb

Trojan horse

Stack and buffer overflow

None of the above

When the CPU needs in and out process from the memory

When the switching needed from user mode to kernel mode

When the CPU is interrupted to return data from a disk read

All of the above

Both (2) and (3)

It prevent legitimate use of the system.

It involves unauthorised use of resources.

It involves unauthorised modification of data.

It involves unauthorised reading of data.

Both (1) and (2)