DREAM FAKED HIS SPEEDRUN

What computer network component allows data transfers from one computer to another through a telephone line?

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?

Pl i need the answer now ! which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard