a. While accessing data for processing system found a miss. The data must be retrieved from disk. The time to determine a miss in 2ps. Time to replace upper level block is 3ps and transfer time is 1ps. Calculate the miss penalty. b. Computer X executes Program 1 with 250 instructions with clock rate of 2GHz and CPU execution time 25 seconds. If Computer Y wants to achieve the same performance as Computer X with a clock rate of 2.5 GHz, then how many instructions should it convert the Program into