The symbol <= is an example of a Relational operator

In a database of employees, Last Name would be a good field to use as the primary key

Indicate whether the statement is true or false

As shown in the accompanying figure, what is the term for a network that covers a large geographic area, such as a city, country, or the world, using a variety of wired and wireless transmission media?

A. local area network (LAN) B. metropolitan area network (MAN) C. wide area network (WAN) D. variable area network (VAN)