Some operating systems and email programs allow you to encrypt the contents of files and messages that are stored on your computer.

_____ uses a command-line interface to communicate with users by default.

A. Windows 8 B. Microsoft DOS C. iOS D. Linux

Answer the following statements true (T) or false (F)

1. x =1 AND y= 2 T AND T= T 2. x = 3 AND y — 2 F AND T = F 3. NOT (x = 2) NOT (F) = T 4. NOT (x = 1) NOT (T) = F 5. NOT (x = 1 AND y = 2) NOT (T AND T) = NOT (T) = F 6. NOT (x = 3 OR y = 4) NOT (F OR F) = NOT (F) — T