Interview question based on skill :
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Total Questions: 20
1. Which among the following best defines the abstract methods?
Correct Answer is : Functions only declared in base class
2. Which among the following is true?
Correct Answer is : The abstract functions must be only declared in derived classes
3. How are abstract functions different from the abstract functions?
Correct Answer is : Abstract must not be defined in base class whereas virtual function can be defined
4. Which among the following is correct?
Correct Answer is : Abstract functions must be defined in all the derived classes
5. It is _________________________ to define the abstract functions.
Correct Answer is : Necessary for all the derived classes
6. The abstract function definitions in derived classes is enforced at _________
Correct Answer is : Compile time
7. What is this feature of enforcing definitions of abstract function at compile time called?
Correct Answer is : Dynamic polymorphism
8. What is the syntax for using abstract method?
Correct Answer is : abstractmethod_name (parameter)
9. If a function declared as abstract in base class doesn’t have to be defined in derived class then ______
Correct Answer is : Derived class should be made abstract class
10. Static methods can’t be made abstract in java.
Correct Answer is : TRUE
11. Which among the following is true?
Correct Answer is : Abstract methods must not be static
12. Which among the following is correct for abstract methods?
Correct Answer is : It must have same prototype in both base and derived class
13. If a class have all the abstract methods the class will be known as ___________
Correct Answer is : Abstract class
14. The abstract methods can never be ___________ in a base class.
Correct Answer is : Private
15. The abstract method definition can be made ___________ in derived class.
Correct Answer is : Private, public, or protected
16. Which among the following best defines abstraction?
Correct Answer is : Hiding the implementation and showing only the features
17. Hiding the implementation complexity can:
Correct Answer is : Make the programming easy
18. Class is _________ abstraction
Correct Answer is : Logical
19. Object is ________ abstraction
Correct Answer is : Real
20. Abstraction gives higher degree of ________
Correct Answer is : Idealized interface
