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  • INTERVIEW QUESTIONS OPERATING SYSTEMS DETAILS
    Question :
    What is Multitasking operating system?
    Category Operating Systems Interview Questions
    Rating (0.4) By 2014 users
    Added on 9/16/2009
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    Answers:

    An Operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking Operating Systems.

    Unix
    Windows 2000
    Windows XP
    Mac OS X



    Multitasking operating systems allow more than one program to run at a time. They can support either preemptive multitasking, where the OS doles out time to applications (virtually all modern OSes) or cooperative multitasking, where the OS waits for the program to give back control (Windows 3.x, Mac OS 9 and earlier).



    Posted by: Manoj Garg    

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    multitasking is a method where multiple tasks, also known as processes, are performed during the same period of time. The tasks share common processing resources, such as a CPU and main memory. In the case of a computer with a single CPU, only one task is said to be running at any point in time, meaning that the CPU is actively executing instructions for that task. Multitasking solves the problem by scheduling which task may be the one running at any given time, and when another waiting task gets a turn. The act of reassigning a CPU from one task to another one is called a context switch. When context switches occur frequently enough the illusion of parallelism is achieved. Even on computers with more than one CPU (called multiprocessor machines), multitasking allows many more tasks to be run than there are CPUs.



    Posted by: aparna    

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