Operating Systems Questions

Q:

What are deadlock prevention techniques?

Answer

Mutual exclusion


Hold and wait


No preemption


Circular wait

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Q:

What is a deadlock?

Answer

Deadlock is a situation where a group of processes are all blocked and none of them can become unblocked until one of the other becomes unblocked. The simplest deadlock is two processes each of which is waiting for a message from the other.

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Q:

What is relative path and absolute path?

Answer

Absolute path-- Exact path from root directory.

Relative path-- Relative to the current path.

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Q:

What are the different types of Real-Time Scheduling?

Answer

Hard real-time systems required to complete a critical task within a guaranteed amount of time.
Soft real-time computing requires that critical processes receive priority over less fortunate ones.

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Q:

What are the benefits of multithreaded programming?

Answer

 



  • Responsiveness

  • Resources sharing

  • Economy

  • Utilization of multiprocessor architectures.

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Q:

What are system calls?

Answer

System calls provide the interface between a process and the operating system. System calls for modern Microsoft windows platforms are part of the win32 API, which is available for all the compilers written for Microsoft windows.

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Q:

What are types of threads?

Answer

User thread


Kernel thread

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Q:

What is a ready queue?

Answer

The processes that are residing in the main memory and are ready and waiting to execute are kept on a list called the ready queue.

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