"I just over clocked my computer to run at" "What is my speedup? (Assume program performance is proportional to the clock speed)"

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?

List a few alternative options and input and output over the standerd keyboard and monitor. explain their functioning in details.

In the context of an internet connection, llc stands for leased line connection liability limited company local loop complex local loop carrier