Question

Which of the following unit protects the memory?

(a) bus interface unit

(b) execution unit

(c) memory management unit

(d) peripheral unit

The question was posed to me during a job interview.

The above asked question is from Resource Protection in chapter Real Time Operating systems of Embedded Systems

Answer 1

Right answer is (c) memory management unit

The explanation is: The resources have to be protected in an embedded system and the most important resource to be protected is the memory which is protected by the memory management unit through different programming.