6. List the following in increasing order (slowest to fastest): megahertz, kilohertz, gigahertz.
a. kilohertz, megahertz, gigahertz
7. What is the bus of a computer?
a. The bus is the electrical connection between different computer components.
8. Name two differences between RAM and a hard disk.
a. RAM is volatile; the hard disk is nonvolatile. Data access in RAM is faster than on the hard disk.
9. What are the advantages of solid-state drives over hard disks?
a. The main advantage is speed: an SSD has much faster data-access speeds than a traditional hard
disk.