To determine if a selection was made in a combo box, the value of the ____________________ property should be tested.

Dark data centers are an extension of ___________, which allows system administrators to monitor and manage servers using remote control software.

A. colocation B. fuzzy logic C. lights-out management D. none of the above

Assume an employee can work for only one company. What is the best suitable relationship between Company and Employee?

a. None b. Aggregation c. Inheritance d. Composition