1: (C) 7 dvd's, a BD (big data) is a an amount of data that cannot be stored by traditional means, so all though its the biggest, its not a storage device.
2: (B), it uses a fan.
3: (A), in windows this is called a page file on your hard drive.
4: (C). Four sticks of 1gb RAM totalling 4gb.
5: (B), IDE cables are referred to as "ribbon cables"
6: (B), workstation for an engineering firm.
7: (C), ram is volatile, meaning its state is liable to change (in this case loosing data when powered off).
8: (A), a server, all though technically all could.
9: (D), ssd's do not rotate disks, thus they their RPM cannot be higher.