Steve left his computer switched on in his room and went out to have breakfast. When he returned, he saw that the monitor had become blank while the system unit was still running. What is the first step that he needs to take to turn on the monitor? A.
Check the keyboard and mouse connections
B.
Move the mouse or press a key on the keyboard
C.
Clean the dust from the system unit fan
D.
Install antivirus software

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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?