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What do a time slice period plus a context switch time of the processor determines?

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What do a time slice period plus a context switch time of the processor determines?

(a) scheduling task

(b) scheduling algorithm

(c) context task

(d) context switch time

This question was posed to me during an interview for a job.

Enquiry is from Task Swapping Methods topic in chapter Real Time Operating systems of Embedded Systems

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The correct option is (d) context switch time

The best explanation: The context switch time of the processor along with the time slice period determines the context switch time of the system which is an important factor in system response, that is, the time period can be reduced to improve the context switching of the system which will increase the number of task switches.

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