Q1 . What are interrupts?

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SOLUTION

Interupts are signals as a result of conditions requiring immediate attentions.Interupts can be hardware or software triggered.

Q2 . what is segmentation fault?

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SOLUTION

Segementation faults are caused when a program tries to read an invalid memory address.

Q3 . what is a dispatcher?

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SOLUTION

Dispatcher is used to select the process next awaiting execution.

Q4 . what is a VFS?

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SOLUTION

It stands for virtual file system.It is a layer in the middle it helps in making the access of various physical File systems uniform.

Q5 . what is a device driver?

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SOLUTION

These are device specific software that are required by an operating system to control or help in the device functioning.Device drivers are provided as Discs or on official device websites.

Q6 . what is segmentation?

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SOLUTION

Segementation is division of primary memory into small portion or segments .In a segemented system the memory location usually consist of segement no and an offset.

Q7 . what is fragmentation?

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SOLUTION

When an operating system executes a process ,the process holds some memory blocks for its usage and then releases it after process completion.When a lot of processes are holding small chunks here and there then,A new process cannot get the memory and

Q8 . what is paging?

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SOLUTION

Paging is a method of getting data from Hard disk into the RAM(Random Access Memory) in memory chunks called pages.

Q9 . what is swapping?

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SOLUTION

It is the process of removing a process from the RAM to the hard disk.There by releasing all the resources like memory held by the process.

Q10 . What is batch operating systems?

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SOLUTION

Various tasks by different users are grouped into groups or chunks called Batches and the batches are run one by one.Thereby similar kind of processes getting executed together.

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