OOP Downcasting Quiz Online Practice Test

1. How is downcasting defined?

Converting a supertype to a subtype

Converting a subtype to a supertype

Converting between subtype and supertype

Converting any type to another type

2. What is required for performing downcasting?

Must be done implicitly

Must be done explicitly

Cannot be done explicitly

Does not need to be done explicitly

3. Downcasting is considered ____________

Consistently reliable

Always risky

Risky in specific scenarios

Reliable based on the context

4. Downcasting _________

Might lead to unpredictable outcomes

Is free from unexpected results

Only causes memory-related errors

Guarantees no errors

5. For a secure downcast, you should use _______________.

Static cast

Dynamic cast

Manual cast

Implicit cast

6. After a successful type casting with `dynamic_cast`, it returns ____________

The address of the converted object

The address of the object used for conversion

The address of the specified object in the syntax

No address

7. If `dynamic_cast` fails, it returns _______________.

`void`

`null`

`void*`

`nullptr`

8. Which syntax correctly represents a `dynamic_cast` operation?

`dynamic_cast(object)`

`dynamic_cast new (object)`

`dynamic_cast(object)`

9. What is the exception thrown for failed downcasting attempts?

CastException

ClassCastingException

ClassCasting

ClassCastException

10. What method can be used to avoid ClassCastExceptions?

Utilize `instanceof`

Employ is-a verification

Apply the arrow operator with a check function

Verify the type of conversion

11. In the context of inheritance, how is downcasting achieved?

Down the inheritance hierarchy

Up the inheritance hierarchy

Both up and down the inheritance hierarchy

The inheritance hierarchy is irrelevant

12. What occurs if downcasting is performed without explicit syntax definition?

Compile-time error

Runtime error

Error at code-writing time

Conversion failure

13. Downcasting is commonly used to:

Access derived class members from a base class

Increase code complexity

Compare objects

Prevent class inheritance

Test Name:	OOP Downcasting Quiz
Subject Category:	Computer Science
Test Type:	Multiple Choice Questions
Total Score / Questions:	13 / 13
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

OOP Downcasting MCQ Quiz Online Practice Test