Lock and key synchronization must take place within a single ____.

Which of the following is NOT typically a symptom of a power supply problem?

A) The computer light is off. B) The power supply fan is inoperable when the computer is on. C) The CD drive is inoperable. D) When the computer powers up, it does not beep.

One of the disadvantages of using 2D codes is:

A) the ease with which a printed code can be stickered over or tampered with. B) that codes are readable without the use of specialized software. C) the unreliability of the transponders used that may run out of power. D) the minimum distance required to read the code.