Which of the following best describes level 3 cache A A smal

Which of the following best describes level 3 cache?

A. A small amount of memory integrated in the processor for performance purposes

B. A small amount of memory on the motherboard for performance purposes

C. A large block of memory in system memory for performance purposes

D. A large block of memory on the motherboard for performance purposes

Solution

Level 3 cache (L3 Cache) is a cache which is often built on the motherboard, or in cpu modules for some special processors, for increasing performance by avoiding the bottleneck of instruction fetch and execution cycles.

Thus, B and A (in some cases) better describes level 3 cache.

L3 cache is one among several intermediates between memory unit and CPU. Memory unit feeds L3 cache, L3 cache feeds L2 cache, L2 cache feeds L1 cache and finally L1 cache feeds registers of CPU. Speed of these memory units increase and the size decreases, as we go down from memory unit to registers. Thus, L3 cache is faster than memory unit but slower than L2 cache.