When data is duplicated across several tables, there is a large risk of having two tables with the same field containing different values

Which of the following is relevant to a technician replacing a hard drive in a laptop?

A) Ensure the power supply matches. B) Ensure it is compatible with the laptop manufacturer. C) Ensure the correct form factor is selected. D) Ensure the drive can be mounted vertically.

The power of radio as a medium of mass communication was demonstrated in 1938 when Orson Welles put on a dramatization of

a. War of the Worlds. b. Hamlet. c. Homer’s Odyssey. d. the assassination of Franklin Roosevelt. e. 20,000 Leagues Under the Sea.