BPSC Tre 4.0 OOPS Concepts Practice Set

Que: (1). What is encapsulation in OOP?

Que: (2). What happens when an object is passed by reference?

Que: (3). Which among the following, for a pure OOP language, is true?

Que: (4). Which feature of OOP is indicated by the following code?

                            class student{  int marks;  };
class topper:public student{  int age;  topper(int age){ this.age=age; } };
                        

Que: (5). What is an abstraction in object-oriented programming?

Que: (6). Which feature of OOP reduces the use of nested classes?

Que: (7). Why Java is Partially OOP language?

                            Why Java is Partially OOP language?

(b) It does not support pointers

(d) It doesn't support all types of inheritance

(a) It allows code to be written outside classes

(c) It supports usual declaration of primitive data types
                        

Que: (8). Which of the following is not true about polymorphism?

Que: (9). Which among the following can show polymorphism?

Que: (10). In which access should a constructor be defined, so that object of the class can be created in any function?

Que: (11). Which is the correct syntax of inheritance?

Que: (12). Which among the following represents correct constructor?

Que: (13). Which header file is required in C++ to use OOP?

Que: (14). How many types of access specifiers are provided in OOP (C++)?

Que: (15). The copy constructors can be used to

Que: (16). When OOP concept did first come into picture?

Que: (17). Which access specifier is usually used for data members of a class?

Que: (18). In multilevel inheritance, which is the most significant feature of OOP used?

Que: (19). Who invented OOP?