MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Object Oriented Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a base class is added with a few new members, its subclass must also be modified. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
How many base classes can a single derived class have in C++? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | As many as required |
| Answer» E. | |
| 3. |
If a base class is inherited from another class and then one class derives it, which inheritance is shown? |
| A. | Multiple |
| B. | Single |
| C. | Hierarchical |
| D. | Multi-level |
| Answer» E. | |
| 4. |
Can we call methods of base class using the constructor of the derived class? |
| A. | Yes, always |
| B. | Yes, but not always |
| C. | No, never |
| D. | No, but we can call in some cases |
| Answer» B. Yes, but not always | |
| 5. |
Always the base class constructors are called ___________ constructor of derived class. |
| A. | Before |
| B. | After |
| C. | Along |
| D. | According to priority of |
| Answer» B. After | |
| 6. |
Base class have ________________ of abstraction. |
| A. | Higher degree |
| B. | Lower degree |
| C. | Intermediate |
| D. | Minimum degree |
| Answer» C. Intermediate | |
| 7. |
If a class is enclosing more than one class, than it can be called as base class of those classes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
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» C. Public | |
| 9. |
Which among the following must be in a base class? |
| A. | Data members |
| B. | Member functions |
| C. | Access specifiers |
| D. | Nothing |
| Answer» E. | |
| 10. |
If a base class is being derived by two other classes, which inheritance will that be called? |
| A. | Single |
| B. | Multiple |
| C. | Multi-level |
| D. | Hierarchical |
| Answer» E. | |
| 11. |
How to make a derived class a base class? |
| A. | Change name of the class |
| B. | Use keyword base |
| C. | Make a class derive from it |
| D. | Can’t be done |
| Answer» D. Can’t be done | |
| 12. |
How many base classes can a single class inherit in java? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | As many as required |
| Answer» B. 2 | |
| 13. |
An abstract class is always a __________ class. |
| A. | Base |
| B. | Derived |
| C. | Template |
| D. | Nested |
| Answer» B. Derived | |
| 14. |
A base class is also known as _____________ class. |
| A. | Basic |
| B. | Inherited |
| C. | Super |
| D. | Sub |
| Answer» D. Sub | |
| 15. |
Which is most appropriate definition of a base class? |
| A. | It is parent of any of its derived class |
| B. | It is child of one of the parent class |
| C. | It is most basic class of whole program |
| D. | It is class with maximum number of members |
| Answer» B. It is child of one of the parent class | |
| 16. |
BASE_CLASS_HAVE__________________OF_ABSTRACTION.?$ |
| A. | Higher degree |
| B. | Lower degree |
| C. | Intermediate |
| D. | Minimum degree |
| Answer» C. Intermediate | |
| 17. |
Can we call methods of base class using constructor of the derived class?$ |
| A. | Yes, always |
| B. | Yes, but not always |
| C. | No, never |
| D. | No, but we can call in some cases |
| Answer» B. Yes, but not always | |
| 18. |
Always the base class constructors are called ___________ constructor of derived class.$ |
| A. | Before |
| B. | After |
| C. | Along |
| D. | According to priority of |
| Answer» B. After | |
| 19. |
If a class is enclosing more than one class, than it can be called as base class of those classes? |
| A. | True |
| B. | False |
| Answer» C. | |
| 20. |
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» C. Public | |