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When the operating system uses HALT instruction on a processor which supports multithreading, the operation moves from

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When the operating system uses HALT instruction on a processor which supports multithreading, the operation moves from

(a) Single task to multi task mode

(b) ST1 to ST0

(c) Multi task to single task mode

(d) None

I got this question during an interview for a job.

I want to ask this question from Hyperthreading In Pentium topic in portion Pentium 4 processor of Microprocessor

1 Answer

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by (49.2k points)
Right option is (c) Multi task to single task mode

Easiest explanation: When the operating system uses HALT instruction on a processor which supports multithreading, the operation moves from multi tasking mode to single tasking mode.

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