________ are dashed lines that display on the slide that assist with alignment of the image

Answer the following statements true (T) or false (F)

1. Magnetic disks are the foundation of external memory on virtually all computer systems. 2. During a read or write operation, the head rotates while the platter beneath it stays stationary. 3. The width of a track is double that of the head. 4. There are typically hundreds of sectors per track and they may be either fixed or variable lengths. 5. A bit near the center of a rotating disk travels past a fixed point slower than a bit on the outside.

What is a program that appears to do something useful but is actually malware?

A. virus B. logic bomb C. Trojan D. back door