Object-Oriented Programming MCQs with Answers

Past Paper MCQ

Which type of inheritance is not supported by Java?

• A.Single inheritance
• B.Multilevel inheritance
• C.Multiple inheritance
• D.Hierarchical inheritance

What is the concept of polymorphism in Object-Oriented Programming (OOP)?

• A.The mechanism of binding data and methods into a single unit
• B.The process of hiding internal implementation details
• C.The ability of an object to take on many forms
• D.The concept of deriving a new class from an existing class

What term is used to define the properties or characteristics of an object in computing?

• A.Method
• B.Attribute
• C.Class
• D.Instance

Which programming language is a prime example of object-oriented programming?

• A.C
• B.Assembly
• C.Java
• D.FORTRAN

What is the primary purpose of the Singleton design pattern in software development?

• A.To allow incompatible interfaces to work together by wrapping one interface with another
• B.To create a family of related objects without specifying their concrete classes
• C.To ensure a class has only one instance and provides a global point of access to it
• D.To separate the construction of a complex object from its representation

What is the term used for the ability to create your own data types in programming?

• A.Create
• B.Encapsulation
• C.Abstraction
• D.Inheritance

In C++, how do you declare a variable for a structure called StructName?

• A.StructName = var;
• B.struct var StructName;
• C.var StructName;
• D.StructName var;

Which function type can access private members of a class without being a member of that class?

• A.Virtual function
• B.Static function
• C.Friend function
• D.Inline function

In Flutter, which function is typically used to implement the Scaffold() widget?

• A.initState()
• B.render()
• C.build()
• D.createState()

In Object-Oriented Programming, when is a constructor function automatically called?

• A.When the program terminates
• B.When a class is defined
• C.When a function is invoked
• D.When an object is declared