McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Computer Applications (BCA) , Programming Languages .
| 1. |
Which of the two features match each other? |
| A. | Inheritance and Encapsulation |
| B. | Encapsulation and Polymorphism |
| C. | Encapsulation and Abstraction |
| D. | Abstraction and Polymorphism |
| Answer» C. Encapsulation and Abstraction | |
| 2. |
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 |
| Answer» A. Private | |
| 3. |
If a function can perform more than 1 type of tasks, where the function name remains same, which feature of OOP is used here? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Polymorphism |
| D. | Abstraction |
| Answer» C. Polymorphism | |
| 4. |
Which feature in OOP is used to allocate additional function to a predefined operator in any language? |
| A. | Operator Overloading |
| B. | Function Overloading |
| C. | Operator Overriding |
| D. | Function Overriding |
| Answer» A. Operator Overloading | |
| 5. |
Which among the following best defines abstraction? |
| A. | Hiding the implementation |
| B. | Showing the important data |
| C. | Hiding the important data |
| D. | Hiding the implementation and |
| Answer» D. Hiding the implementation and | |
| 6. |
A base class is also known as class. |
| A. | Basic |
| B. | Inherited |
| C. | Super |
| D. | Sub |
| Answer» C. Super | |
| 7. |
If class A is derived from another derived class B which is derived from class C, which class will have maximum level of abstraction? |
| A. | Class A |
| B. | Class B |
| C. | Class C |
| D. | All have the same level of abstraction |
| Answer» C. Class C | |
| 8. |
Derived class is also known as |
| A. | Sub Class |
| B. | Small Class |
| C. | Big Class |
| D. | Noticeable Class |
| Answer» A. Sub Class | |
| 9. |
Which of the following gets called when an object is being created? |
| A. | Constructor |
| B. | Virtual Function |
| C. | Destructors |
| D. | Main |
| Answer» A. Constructor | |
| 10. |
Destructor has a same name as the constructor and it is preceded by? |
| A. | ! |
| B. | ? |
| C. | ~ |
| D. | $ |
| Answer» C. ~ | |
| 11. |
Which of the following is called address operator? |
| A. | * |
| B. | & |
| C. | _ |
| D. | % |
| Answer» B. & | |
| 12. |
Which of the following is used for comments in |
| A. | //comment |
| B. | /comment |
| C. | *comment |
| D. | ?comment |
| Answer» A. //comment | |
| 13. |
What is used to read from the console in C++? |
| A. | cin |
| B. | scanf |
| C. | read |
| D. | getline |
| Answer» A. cin | |
| 14. |
What is used to write/display to the console in C++? |
| A. | printf |
| B. | cout |
| C. | write |
| D. | putline |
| Answer» B. cout | |
| 15. |
Which operator is used with cin ? |
| A. | >> |
| B. | << |
| C. | > |
| D. | < |
| Answer» A. >> | |
| 16. |
Which operator is used with cout? |
| A. | >> |
| B. | << |
| C. | > |
| D. | < |
| Answer» B. << | |
| 17. |
Which feature of OOP indicates code reusability? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Abstraction |
| D. | Polymorphism |
| Answer» B. Inheritance | |
| 18. |
Which feature can be implemented using |
| A. | Inheritance |
| B. | Abstraction |
| C. | Polymorphism |
| D. | Overloading |
| Answer» B. Abstraction | |
| 19. |
Which of the following is not a type of Constructor? |
| A. | Friend constructor |
| B. | Copy constructor |
| C. | Default |
| D. | Parameterized |
| Answer» A. Friend constructor | |
| 20. |
What is the other name used for functions inside a |
| A. | Member variables |
| B. | Member functions |
| C. | Class functions |
| D. | Class variables |
| Answer» B. Member functions | |
| 21. |
Which among the following can restrict class members to get inherited? |
| A. | Private |
| B. | Protected |
| C. | Public |
| D. | All three |
| Answer» A. Private | |
| 22. |
Which type of members can’t be accessed in derived classes of a base class? |
| A. | Protected |
| B. | Private |
| C. | Public |
| D. | All can be accessed |
| Answer» B. Private | |
| 23. |
Which of the following is true? |
| A. | All objects of a class share all data members of class |
| B. | Objects of a class do not share non-static members. Every object has its own copy |
| C. | Objects of a class do not share codes of non-static |
| D. | None of these |
| Answer» B. Objects of a class do not share non-static members. Every object has its own copy | |
| 24. |
Which among the following is not true for polymorphism? |
| A. | It is feature of OOP |
| B. | Ease in readability of program |
| C. | Helps in redefining the |
| D. | Increases overhead of function |
| Answer» D. Increases overhead of function | |
| 25. |
If different properties and functions of a real world entity is grouped or embedded into a single element, what is it called in OOP language? |
| A. | Inheritance |
| B. | Polymorphism |
| C. | Abstraction |
| D. | Encapsulation |
| Answer» D. Encapsulation | |
| 26. |
If same message is passed to objects of several different classes and all of those can respond in a different way, what is this feature called? |
| A. | Inheritance |
| B. | Overloading |
| C. | Polymorphism |
| D. | Overriding |
| Answer» C. Polymorphism | |
| 27. |
Out of the following, which is not a member of the |
| A. | Static function |
| B. | Friend function |
| C. | Const function |
| D. | Virtual function |
| Answer» B. Friend function | |
| 28. |
Which of the following is an abstract data type? |
| A. | int |
| B. | float |
| C. | class |
| D. | string |
| Answer» C. class | |
| 29. |
Which of the following is not a type of inheritance? |
| A. | Multiple |
| B. | Multilevel |
| C. | Distributive |
| D. | Hierarchical |
| Answer» C. Distributive | |
| 30. |
Which of the following is correct in C++? |
| A. | Classes cannot have protected data members |
| B. | Structures can have member functions |
| C. | Class members are public by default |
| D. | Structure members are private by default |
| Answer» B. Structures can have member functions | |
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