A DES algorithm begins by sending a plaintext 64-bit string through an initial permutation; the algorithm then cycles through ____ rounds.

A technician needs to change locations of a telephone between 66 blocks. Which of the following tools would be used in locating the positions in the cross connections?

A. Butt set B. Cable tester C. Toner probe D. Voltage meter

Which of the following is a compilation error?

a. Neglecting to declare a local variable in a function before it is used. b. Using a triple equals sign instead of a double equals sign in the condition of an if statement. c. Omitting the left and right parentheses for the condition of an if statement. d. All of the above.