a) Figure 1 illustrates a segment of cache system with data stored in each lines in byte. Describe this mapping structure. b) How many memory bits used as illustrated in Figure 1? (5 marks) (2 marks) Tag index offset 00 01 10 11 1011 0111 1000 1011 0111 1010 1011 0111 1011 1000 1111 1001 1110 1100 1111 0001 1010 10100001 10110001 11000001 11010001 10100010 10100011 10100100 10100101 1101 1110 0101 0010 10100101 10100110 10100111 10101000 Figure 1: Cache segment c) Give one reason why cache memory is important in computer organization. (2 marks)