Please provide the answers

c. While browsing at Zinox computer store, you overheard a customer asking a salesperson what is the fastest computer in the store that he can buy'. Salesperson replies, "You're looking at our Macintoshes. The fastest Mac we have runs at a clock speed of 2.4 GHz. If you really want the fastest machine, you should buy our 4.8-GHz Intel Pentium IV instead. Is the salesperson correct? What would you say to help this customer? (4 marks). d. A processor accesses main memory with an average access time of T2. A smaller cache memory is interposed between the processor and main memory. The cache has a significantly faster access time of T1