Advantages of desktop publishing over traditional methods include
a. higher resolution and more space.
b. fewer mistakes and greater offset.
c. unified workspace and increased flexibility.
d. higher cost and more expensive equipment.

i'm pretty sure the answer isn't d; it just doesn't make sense to me.

Assume that there is a 4% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on three independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?