4. (10 points=5*2) On a paged system, the associative address registers hold the most active pages on cache memory. If cached pages can be addressed in 80 ms and uncached pages can be addressed in 200 ms: a. What must be the cache hit rate in order to achieve a memory access time of 110 ms. b. Now consider a paging hardware with average physical memory access time of 110 ms as above. It takes 20 milliseconds to search the TLB. Calculate the access time with a TLB hit. c. Calculate the access time with a TLB miss TLB+Memory+Memory d. If the TLB hit rate is 0.80, find the effective access time. e. Which algorithm is involved in this