MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Bachelor of Computer Applications (BCA) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The process by which objects of one class acquire the properties of objects of another class is called . |
| A. | abstraction |
| B. | inheritance |
| C. | encapsulation |
| D. | polymorphism |
| Answer» C. encapsulation | |
| 2. |
The process of making an operator to exhibit different behaviors in different instances is called . |
| A. | function overloading |
| B. | operator overloading |
| C. | inheritance |
| D. | none of these |
| Answer» C. inheritance | |
| 3. |
refers to the linking of procedure call to the code to be executed in response to the call. |
| A. | polymorphism |
| B. | functions |
| C. | dynamic binding |
| D. | object |
| Answer» D. object | |
| 4. |
A __________ is a constructor that either has no parameters, or if it has parameters, all the parameters have default values. |
| A. | default constructor |
| B. | copy constructor |
| C. | Both A and B |
| D. | None of these |
| Answer» B. copy constructor | |
| 5. |
To ensure that every object in the array receives a destructor call, always delete memory allocated as an array with operator __________ . |
| A. | destructor |
| B. | New[] |
| C. | delete[] |
| D. | Free() |
| Answer» D. Free() | |
| 6. |
Which allows you to create a derived class that inherits properties from more than one base class? |
| A. | Multilevel inheritance |
| B. | Multiple inheritance |
| C. | Hybrid Inheritance |
| D. | Hierarchical Inheritanc |
| Answer» C. Hybrid Inheritance | |
| 7. |
The duplication of inherited members due to the multiple paths can be avoided by making a common base class is called |
| A. | Abstract class |
| B. | Virtual base class |
| C. | Multiple inheritance |
| D. | Nesting of classes |
| Answer» C. Multiple inheritance | |
| 8. |
Which of the following statement will be correct if the function has three arguments passed to it? |
| A. | The trailing argument will be the default argument. |
| B. | The first argument will be the default argument. |
| C. | The middle argument will be the default argument. |
| D. | All the argument will be the default argument. |
| Answer» B. The first argument will be the default argument. | |
| 9. |
A function with the same name as the class, but preceded with a tilde character (~) is called __________ of that class. |
| A. | constructor |
| B. | destructor |
| C. | function |
| D. | object |
| Answer» C. function | |
| 10. |
_________ used to make a copy of one class object from another class object of the same class type. |
| A. | constructor |
| B. | copy constructor |
| C. | destructor |
| D. | default constructor |
| Answer» C. destructor | |
| 11. |
A private member function can be called by another function that is a member of a class is called |
| A. | Friend function |
| B. | Nesting of member function |
| C. | Inline function |
| D. | Static function |
| Answer» C. Inline function | |
| 12. |
Which of the following statement is correct with respect to the use of friend keyword inside a class? |
| A. | A private data member can be declared as a friend. |
| B. | A class may be declared as a friend. |
| C. | An object may be declared as a friend. |
| D. | We can use friend keyword as a class name. |
| Answer» C. An object may be declared as a friend. | |
| 13. |
Which of the following statements are correct for a static member function? 1. It can access only other static members of its class. 2. It can be called using the class name, instead of objects. |
| A. | Only 1 is correct. |
| B. | Only 2 is correct. |
| C. | Both 1 and 2 are correct. |
| D. | Both 1 and 2 are incorrect. |
| Answer» D. Both 1 and 2 are incorrect. | |
| 14. |
Which of the following is the only technical difference between structures and classes in C++? |
| A. | Member function and data are by default protected in structures but private in classes. |
| B. | Member function and data are by default private in structures but public in classes. |
| C. | Member function and data are by default public in structures but private in classes. |
| D. | Member function and data are by default public in structures but protected in classes. |
| Answer» D. Member function and data are by default public in structures but protected in classes. | |
| 15. |
Which of the following means "The use of an object of one class in definition of another class"? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Composition |
| D. | Abstraction |
| Answer» D. Abstraction | |
| 16. |
Observe following function declaration and choose the best Ans:: int divide ( int a, int b = 2 ) |
| A. | Variable b is of integer type and will always have value 2 |
| B. | Variable a and b are of int type and the initial value of both variables is 2 |
| C. | Variable b is international scope and will have value 2 |
| D. | Variable b will have value 2 if not specified when calling function |
| Answer» E. | |
| 17. |
Consider the following statements: int x = 22,y=15; x = (x>y) ? (x+y) : (x y); What will be the value of x after executing these statements? |
| A. | 22 |
| B. | 37 |
| C. | 7 |
| D. | Error. Cannot be executed |
| Answer» C. 7 | |
| 18. |
What will be the values of x, m and n after the execution of the following statements? int x, m, n; m = 10; n = 15; x = ++m + n++; |
| A. | x=25, m=10, n=15 |
| B. | x=26, m=11, n=16 |
| C. | x=27, m=11, n=16 |
| D. | x=27, m=10, n=15 |
| Answer» C. x=27, m=11, n=16 | |
| 19. |
relationship indicates that the change to an independent thing will affect the dependent thing. |
| A. | inheritance |
| B. | dependency |
| C. | association |
| D. | aggregation |
| Answer» C. association | |
| 20. |
Calling a member function by using its name from another member function of the same class is known as |
| A. | Grouping of member function |
| B. | Member function group |
| C. | Nesting of member function |
| D. | Nested group of member function |
| Answer» D. Nested group of member function | |