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Main function of context switching

What is the main function of context switching?

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Context switching is very important as it allows the switching to take place from one program to another program.

a. This doesn’t disturb the presently running program and the operating system switch the program if the resources are free.

b. Operating system kernel performs the context switching to save the state of the currently running program like registers.

c. It forms the subsequent running state of the program and helps in restoring the state of the program.

d. Context switching permits alternative program to switch if some other program is using the resources for a very long time and there is a requirement to switch.

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