Question

Which of the following allows speculative execution?

(a) 12-way set associative cache

(b) 8-way set associative cache

(c) direct mapped cache

(d) 4-way set associative cache

This question was addressed to me in unit test.

My doubt stems from Cache Memory in section Memory Systems of Embedded Systems

Answer 1

Right choice is (c) direct mapped cache

The explanation is: The direct mapped cache has the advantage of allowing a simple and fast speculative execution.