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The unit that provides a four level protection mechanism, for system’s code and data against application program is

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The unit that provides a four level protection mechanism, for system’s code and data against application program is

(a) central processing unit

(b) segmentation unit

(c) bus interface unit

(d) none of the mentioned

I have been asked this question in an interview for internship.

I need to ask this question from Architecture and Signal Descriptions of 80386 topic in portion 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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by (49.2k points)
The correct answer is (b) segmentation unit

Easy explanation: The segmentation unit provides a four level protection mechanism, for protecting and isolating the system’s code and data, from those of the application program.

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