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The hardware mechanism that allows a device to notify the CPU is called _______

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in Operating System by (102k points)
The hardware mechanism that allows a device to notify the CPU is called _______

(a) polling

(b) interrupt

(c) driver

(d) controlling

I have been asked this question in semester exam.

This interesting question is from I/O System in chapter I/O Systems of Operating System

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Right choice is (b) interrupt

The explanation: None.

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