No two systems on the same network can share the same IP address.

What does a primary key do?

a. Identifies each row of a table. b. Selects a number of rows from a database. c. Stores a bunch of related data. d. None of the above.

In a JavaFX CSS style definition, if a selector name starts with a period, that selector corresponds to a __________.

a. value entered by the user b. specific JavaFX node c. named color d. specific variable in the application