You have four 2.5" hard drives on hand and need a replacement drive for a desktop system. The documentation for the motherboard installed in the system says the board has six SATA 3 Gb/s connectors and one IDE connector. Which of the four hard drives will work in the system and yield the best performance?a. Ultralock IDE ATA 4500-RPM 3.5ʺ HDD
b. WD 3.5ʺ 7200-RPM SATA 3.0 HDD
c. Seagate IDE ATA 4500-RPM 3.5ʺ HDD
d. WD 2.5ʺ 4500-RPM SATA 6 Gb/s HDD

1. you have a small business that is divided into 3 departments: accounting, sales, and administration. these departments have the following number of devices (computers, printers, etc.): accounting-31, sales-28, and administration-13. using a class c private network, subnet the network so that each department will have their own subnet. you must show/explain how you arrived at your conclusion and also show the following: all available device addresses for each department, the broadcast address for each department, and the network address for each department. also, determine how many "wasted" (not usable) addresses resulted from your subnetting (enumerate them).