Q. A critical region

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Q. Which is not an Operating System ?

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Q. It is not the layer of the Operating system.

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Q. What is the name of the software which can be legally compiled and often used for free?

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Q. The higher versions of operating systems are so written that programs designed for earlier versions can still be run. What is it called ?

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Q. What is the name of the software which deals with the running of the actual computer and not with the programming problems?

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Q. Supervisor state is only allowed to ?

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Q. Which of the following is always there in a computer ?

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Q. Relocation bits used by relocating loader are specified by

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Q. In which of the following usually a front end processor is used ?

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Q. When did IBM released the first version of its disk operating system DOS version 1.0 ?

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Q. Which is not a function of Kernel ?

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Q. In real time OS, which is most suitable scheduling scheme

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Q. For multiprogramming operating system

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Q. Which is single user operating system

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Q. Which operating system reacts in the actual time

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Q. Macintosh computer uses

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Q. Which technique is used by operating systems to execute several programs concurrently by switching back and forth

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Q. Multiprogramming systems

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Q. Operating system is

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