Question 4: Cache Memory [10 marks] What are advantages of using a cache? With help of suitable figures differentiate among associative mapping and set associative mapping. List advantages of a unified cache.

Question 5: Number Conversion [16 Marks] Perform the following conversion:

Covert (23)10 to binary and Hexadecimal.

Convert (00101111) 2 to decimal and Hexadecimal.

Find the 8bit twos complement expression for the decimals value of 12

. Convert (45.45)10 to IEEE754 floating point format in hexadecimal format