What is P element?

What are attempts to gain access to a switch system by posing as an authorized user?

a. Toll fraud. b. War dialing. c. Masquerades. d. Denial of service.

Parallel arrays have all of the following characteristics, except __________.

a. They can access related elements with a common subscript. b. They share a reference to the same array. c. They hold related data of different types. d. They are two or more arrays that hold related data.