Consider a processor with a two-level cache and the following characteristics: Parameter Base CPI (clock cycles per instruction), No Memory Stalls Processor Clock Frequency Main Memory Access Time 1st Level Cache Miss Rate per Instruction Executed 2nd Level Cache, 4-way Set Associative Speed Global Miss Rate with 2nd Level Cache, 4-way Set Associative Value 1.75 2 GHz 75 ns 6% 20 cycles 1.75% Calculate the CPI (clock cycles per instruction) for the processor for these cases: (a) [3 points] Assume the processor uses only a 1st level cache and no 2nd level cache; (b) [4 points] Assume the processor uses two levels of cache.