1. What is the main purpose of secondary storage in a computer system?
To provide very fast temporary storage that the CPU can access directly
To store programs and data permanently when the power is off
To carry out the arithmetic and logic operations for the processor
To hold the instructions that the processor is currently executing
2. How is data read from and written to a magnetic hard disk drive?
A read head collects data from a long magnetic tape wound on a reel
An electric current traps electrons inside memory chips
A read/write head moves over rotating magnetic platters
A laser measures the level of reflection from pits and lands