Operating Systems Questions

Q:

What is a job queue?

Answer

When a process enters the system it is placed in the job queue.

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0 2033
Q:

What are deadlock prevention techniques?

Answer

Mutual exclusion


Hold and wait


No preemption


Circular wait

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0 2033
Q:

What is a device queue?

Answer

A list of processes waiting for a particular I/O device is called device queue.

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0 2028
Q:

What are types of threads?

Answer

User thread


Kernel thread

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1 2016
Q:

What is cycle stealing?

Answer

We encounter cycle stealing in the context of Direct Memory Access (DMA). Either the DMA controller can use the data bus when the CPU does not need it, or it may force the CPU to temporarily suspend operation. The latter technique is called cycle stealing. Note that cycle stealing can be done only at specific break points in an instruction cycle.

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0 2007
Q:

What is SCSI?

Answer

SCSI - Small computer systems interface is a type of interface used for computer components such as hard drives, optical drives, scanners and tape drives. It is a competing technology to standard IDE (Integrated Drive Electronics).

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0 2003
Q:

What is an idle thread?

Answer

The special thread a dispatcher will execute when no ready thread is found.

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1 2000
Q:

What is virtual memory?

Answer

Virtual memory is hardware technique where the system appears to have more memory that it actually does. This is done by time-sharing, the physical memory and storage parts of the memory one disk when they are not actively being used.

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0 1998