Question $2$

How does the following cache designs and optimizations affect cache miss rate, hit time, and miss penalty?

Answer format guideline: Your answer must be one of "increase", "decrease", or "not change".

$1.$ Adding prefetching to a cache $($assuming mostly accurate and mostly timely$)$ may the number of cache misses, may

the cache hit$/$access time, and may cache miss time.

$2.$ Adding way prediction to a set associative cache $($assuming mostly accurate$)$ may the number of cache misses, may the cache hit$/$access time, and may cache miss time.

$3.$ Choosing physically tagged and physically indexed $($PIPT$)$ cache over virtually tagged and virtually indexed $($VIVT$)$ cache may the number of cache misses, may the cache hit$/$access time, and may cache miss time.