Que- Which was the first purely object oriented programming language developed?
a. Java
b. C++
c. SmallTalk
d. Kotlin
Ans- SmallTalk
Que- Which of the following best defines a class?
a. Parent of an object
b. Instance of an object
c. Blueprint of an object
d. Scope of an object
Ans- Blueprint of an object
Que- Who invented OOP?
a. Alan Kay
b. Andrea Ferro
c. Dennis Ritchie
d. Adele Goldberg
Ans- Alan Kay
Que- What is the additional feature in classes that was not in structures?
a. Data members
b. Member functions
c. Static data allowed
d. Public access specifier
Ans- Member functions
Que- Which is not feature of OOP in general definitions?
a. Code reusability
b. Modularity
c. Duplicate/Redundant data
d. Efficient Code
Ans- Duplicate/Redundant data
Que- Which Feature of OOP illustrated the code reusability?
a. Polymorphism
b. Abstraction
c. Encapsulation
d. Inheritance
Ans- Inheritance
Que- Which language does not support all 4 types of inheritance?
a. C++
b. Java
c. Kotlin
d. Small Talk
Ans- Java
Que- How many classes can be defined in a single program?
a. Only 1
b. Only 100
c. Only 999
d. As many as you want
Ans- As many as you want
Que- When OOP concept did first came into picture?
a. 1970's
b. 1980's
c. 1993
d. 1995
Ans- 1970's
Que- Why Java is Partially OOP language?
a. It supports usual declaration of primitive data types
b. It doesn't support all types of inheritance
c. It allows code to be written outside classes
d. It does not support pointers
Ans- It supports usual declaration of primitive data types
Que- Which concept of OOP is false for C++?
a. Code can be written without using classes
b. Code must contain at least one class
c. A class must have member functions
d. At least one object should be declared in code
Ans- Code must contain at least one class
Que- Which of the following is not type of class?
a. Abstract Class
b. Final Class
c. Start Class
d. String Class
Ans- Start Class
Que- Class is pass by _______
a. Value
b. Reference
c. Value or Reference, depending on program
d. Copy
Ans- Reference
Que- What is default access specifier for data members or member functions declared within a class without any specifier, in C++ ?
a. Private
b. Protected
c. Public
d. Depends on compiler
Ans- Private
Que- Which is most appropriate comment on following class definition :class Student { int a; public : float a; };
a. Error : same variable name can't be used twice
b. Error : Public must come first
c. Error : data types are different for same variable
d. It is correct
Ans- Error : same variable name can't be used twice
Que- Which is known as generic class?
a. Abstract class
b. Final class
c. Template class
d. Efficient Code
Ans- Template class
Que- Size of a class is :
a. Sum of size of all the variables declared inside the class
b. Sum of size of all the variables along with inherited variables in the class
c. Size of largest size of variable
d. Classes doesn't have any size
Ans- Classes doesn't have any size
Que- Which class can have member functions without their implementation?
a. Default class
b. String class
c. Template class
d. Abstract class
Ans- Abstract class
Que- Which of the following describes a friend class?
a. Friend class can access all the private members of the class, of which it is a friend
b. Friend class can only access protected members of the class, of which it is a friend
c. Friend class don't have any implementation
d. Friend class can't access any data member of another class but can use it's methods
Ans- Friend class can access all the private members of the class, of which it is a friend
Que- What is scope of a class nested inside another class?
a. Protected scope
b. Private scope
c. Global scope
d. Depends on access specifier and inheritance used
Ans- Depends on access specifier and inheritance used
Que- Which among the following is false, for member function of a class?
a. All member functions must be defined
b. Member functions can be defined inside or outside the class body
c. Member functions need not be declared inside the class definition
d. Member functions can be made friend to another class using friend keyword
Ans- Member functions need not be declared inside the class definition
Que- Which syntax for class definition is wrong?
a. class student{ };
b. student class{ };
c. class student{ public: student( int a ){ } };
d. class student{ student( int a ){} };
Ans- student class{ };
Que- Which of the following pairs are similar?
a. Class and object
b. Class and structure
c. Structure and object
d. Structure and functions
Ans- Class and structure