Suppose a given bus protocol requires 4 ns for devices to make requests, 8 ns for arbitration, and 15 ns to complete each operation. How many operations are completed per second? a. A hard disk with 4 platters has 1024 tracks/platter, 1024 sectors/track, and 512 bytes/sector. If the platter rotation speed is 15,000 rpm with 1 ms seek time for every 100 tracks traversed. Calculate the following:i. Total capacity of this hard disk (3 marks)ii. The average seek time (4 marks)iii. The average rotational latency (3 marks)iv. The transfer time for a sector (3 marks)v. The average access time