Basics

What is the difference between object-oriented programming and procedural programming?

• Procedural programming can use looping and branching, but object-oriented programming cannot.

• Procedural programming uses subroutines, but object-oriented programming does not allow them.

• Procedural programming specifies a sequence of tasks, but object-oriented programming describes the properties of tools or items.

• Procedural programming specifies a sequence of calculations, but object-oriented programming involves more logic.

How do object behaviors and attributes differ?

• Attributes apply only to a specified object, but behaviors apply to other linked objects.

• Behaviors are vector quantities, but attributes are scalars.

• Attributes describe a state, but behaviors describe actions.

• Behaviors describe dynamic properties, but attributes are static.

You are designing a traffic simulation program. What is a possible attribute that you could use for a car object?

• opening the door

• accelerating

• cleaning

• gas mileage

Robert has gathered the requirements for a new solution, described the application he is going to build, and identified the main objects in the solution. What should he do next?

• Describe object interactions.

• Start writing code.

• Build class diagrams.

• Build CRC cards.

What is the purpose of encapsulation?

• to protect an object from unwanted changes

• to eliminate redundant properties

• to separate attributes from behaviors

• to organize attributes and behaviors in a hierarchical fashion

In addition to attributes and behaviors, which quality must a class possess?

• a data type

• a state

• a color

• a name

In the following class diagram, what does promote() represent?

• an attribute

• an abstraction

• a behavior

• a name

What is a benefit of using a programming language that has a large library?

• A large library tracks the state of individual objects within a program.

• A large library allows many programmers to work simultaneously.

• Many classes are already defined and can be used without have to re-define them.

• Objects are contained in the library, so they won't have to be created if the library is referenced.

in the following class diagram, what does phone represent?

• a title

• a name

• an attribute

• a behavior

We're using abstraction when we define a(n) _____.

• attribute

• object

• behavior

• class