In a client/server model, a client program 

To send another station a message, the main thing a user has to know is

Every device on the Internet has a unique ______ address (also called an “Internet address”) that identifies it in the same way that a street address identifies the location of a house

The database administrator’s function in an organization is —

What is an ‘intranet’

Which of the following is billionth of a second?