Introduction to OOP

Which statement(s) best describes an object's attributes?

• Attributes act like the nouns of an object.

• Attributes describe an object's behavior.

• Attributes can mean pretty much whatever you want them to mean — that's what we mean by "open source."

• All of the above

Which statement(s) best describes an object's behavior?

• Behavior acts like the nouns of an object.

• Behavior, like attributes, can be defined however we want — that's what we mean by "open source."

• Behavior acts like the verbs of an object.

• All of the above.

Encapsulation means "open to all" and indicates that the internal workings of an object are entirely visible to the outside world.

• True

• False

• Sometimes

Which statement(s) best describes inheritance?

• One object (the child) generalizes the attributes and behavior of another object (the parent), making the object more generalized.

• The child object inherits from its parent, adding specialized attributes and behavior

• When a child object is created, a well-known best practice is for the developer to manually copy/paste all of the source code from the parent object to ensure that nothing gets broken.

• When a child object inherits from its parent, only the additional attributes and behavior must be coded, which is one of the benefits of OOP.

Which of the these is the functionality of ‘Encapsulation’?

• Binds together code and data

• Using single interface for general class of actions

• Reduce Complexity

• All of the mentioned

Which of the following is a mechanism by which object acquires the properties of another object?

• Encapsulation
•  Abstraction
• Inheritance
•  Polymorphism

Which of the following supports the concept of hierarchical classification?

• Polymorphism
• Encapsulation
• Abstraction
• Inheritance

Which of the following concept is often expressed by the phrase, ‘One interface, multiple methods’?

•  Abstraction
• Polymorphism
• Inheritance
•  Encapsulation

What is the difference between a class and an object?

• A class is a blueprint to make an object
• An object is a blueprint to make a class
• A blueprint is an object to make a class
• Blueprint class is an object make a

An object is an instance of a:

• parameter
• method
• class
• application