BPSC Tre 4.0 OOPS Concepts Practice Set

Que: (1). Which among the following, for a pure OOP language, is true?

Que: (2). 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: (3). Which among the following can show polymorphism?

Que: (4). Who invented OOP?

Que: (5). How many types of access specifiers are provided in OOP (C++)?

Que: (6). 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: (7). In multilevel inheritance, which is the most significant feature of OOP used?

Que: (8). Which among the following represents correct constructor?

Que: (9). Which header file is required in C++ to use OOP?

Que: (10). Which of the following is not true about polymorphism?

Que: (11). The copy constructors can be used to

Que: (12). Which feature of OOP reduces the use of nested classes?

Que: (13). What is encapsulation in OOP?

Que: (14). In which access should a constructor be defined, so that object of the class can be created in any function?

Que: (15). Which is the correct syntax of inheritance?

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

Que: (17). What is an abstraction in object-oriented programming?

Que: (18). Which access specifier is usually used for data members of a class?

Que: (19). What happens when an object is passed by reference?