A ________ is an annual fee that allows schools or organizations to install multiple copies of a software program on many computers

Which of the following is an example of course-grained access control?

A. Employees can open the door. B. Employees based in the US can open or close the door during office hours. C. Employees in the Engineering department and based in the US can open or close the door during office hours if they are assigned to an active project. D. Employees with passwords can open the door.

Answer the following statements true (T) or false (F)

1. If a base class does not have a parameterless constructor, its derived class constructor must use the notation: base(parameter List) to call one of the base class's parameterized constructors. 2. If a reference to a base class object calls a method that has been overridden by a derived class, the derived class's version of the method is the one that executes. 3. Properties in a base class can be overridden in the same way that methods can be overridden. 4. If a derived class introduces additional methods, properties, or fields, a base class reference variable cannot access them.