39. OCR A Level (H446) SLR7 – 1.2 Object-oriented languages part

What does polymorphism literally mean?

• A type of variable

• A type of function

• A programming language

• Something that occurs in several different forms

How many main types of polymorphism are there in object-oriented programming?

• One

• Three

• Two

• Four

What are the two main types of polymorphism in object-oriented programming?

• Public and Private

• Global and Local

• Static and Dynamic

• Abstract and Concrete

What does the plus symbol act as in the context of strings?

• String concatenation operator

• Multiplication operator

• Subtraction operator

• Division operator

What does the plus symbol act as in the context of integers?

• Logical operator

• Mathematical addition operator

• String concatenation operator

• Comparison operator

What is method overloading?

• Overriding a method in a subclass

• Implementing multiple classes with the same name

• Implementing multiple methods of the same name but with different parameters within the same class

• Using the same method to perform different tasks in different classes

What is required for method overloading to work?

• All methods must be static

• Methods must have the same name but different access modifiers

• Methods must have the same return type

• Parameter sets must differ in number, type, or order

What is dynamic polymorphism?

• Methods are dynamically loaded into memory

• A class dynamically changes its properties

• A method changes its functionality at runtime

• A subclass is able to override a method of its superclass

What sound does the generic bird object make?

• Chirp

• Quack

• Tweet

• Squawk

What sound does the duck class make?

• Tweet

• Squawk

• Quack

• Chirp