(a) how many individual addresses can be created using 32-bit addresses? (0.5 point) (b) What is the main task of Instruction pointer? (0.5 point) (c) Explain cache miss and cache hit ? (1 point) (d) A computer program has three types of instructions. 20% instructions of the program are load instructions. 40% instructions of the program are arithmetic operations, and the rest of the instructions floating point instructions. Each load instruction takes 4 clock cycles to execute Each arithmetic operation takes 12 clock cycle to execute And Each floating point instructions takes 15 clock cycle to execute.The Processor is 2.1GHz Calculate the value of Clock Per Instruction (CPI) and Million Instruction Per Second (MIPS), (3 points)