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25 uniquely designed questions just for you to evaluate your skills in Exception Handling quiz. Are you ready to challenge yourself and explore more? Let's get started and see how much you can score out of 25.

Master .NET Exception Handling with our quiz. Test your knowledge of handling runtime errors in C#. Learn about try-catch blocks, custom exceptions, and more.

Please feel free to report any corrections if you come across any inaccuracies or errors. Your feedback is valuable in maintaining the accuracy of our content.

Questions

1. What is Exception Handling in .NET?
Answer: A mechanism to detect and handle runtime errors
Explanation: Exception handling is a mechanism in .NET used to detect and handle runtime errors in a structured manner.Report for correction
2. Which keyword is used to throw an exception in C#?
Answer: throw
Explanation: The throw keyword is used to explicitly throw an exception in C#.Report for correction
3. What is Exception Handling in .NET?
Answer: To handle and recover from exceptions
Explanation: The try-catch block is used to catch and handle exceptions, allowing for graceful error recovery.Report for correction
4. Which of the following is not a predefined exception in .NET?
Answer: UserDefinedException
Explanation: User-defined exceptions are created by developers, while the others are predefined in .NET.Report for correction
5. What does the finally block in a try-catch-finally statement do?
Answer: It always executes regardless of whether an exception occurs or not.
Explanation: The finally block contains code that is guaranteed to execute, whether an exception is thrown or not.Report for correction
6. Which of the following keywords is used to catch multiple exceptions in a single catch block?
Answer: catch
Explanation: Multiple exceptions can be caught in a single catch block using the catch keyword followed by the exception types.Report for correction
7. In .NET, which exception is thrown when an arithmetic operation results in an overflow?
Answer: OverflowException
Explanation: An OverflowException is thrown when an arithmetic operation results in an overflow or underflow.Report for correction
8. What is the purpose of the throw statement in exception handling?
Answer: To explicitly raise an exception
Explanation: The throw statement is used to explicitly raise (throw) an exception in C#.Report for correction
9. Which exception is raised when an attempt is made to access an array element with an invalid index?
Answer: IndexOutOfRangeException
Explanation: The IndexOutOfRangeException is thrown when an attempt is made to access an array element with an invalid index.Report for correction
10. What is the purpose of the catch block in exception handling?
Answer: To handle and process exceptions
Explanation: The catch block is used to handle and process exceptions that are caught.Report for correction
11. Which namespace contains the core exception classes in .NET?
Answer: System
Explanation: The core exception classes in .NET are part of the System namespace.Report for correction
12. In exception handling, what does the term "stack unwinding" refer to?
Answer: The process of deallocating resources in the reverse order of allocation
Explanation: Stack unwinding refers to the process of releasing resources in the reverse order of their allocation when an exception is thrown.Report for correction
13. Which exception is thrown when a null reference is dereferenced in C#?
Answer: NullReferenceException
Explanation: A NullReferenceException is thrown when attempting to dereference (access) a null reference.Report for correction
14. Which keyword is used to specify the code to be executed regardless of whether an exception occurs or not?
Answer: finally
Explanation: The finally block is used to specify code that should execute regardless of whether an exception occurs or not.Report for correction
15. In .NET, which exception is thrown when an attempt is made to divide a number by zero?
Answer: DivideByZeroException
Explanation: A DivideByZeroException is thrown when attempting to divide a number by zero.Report for correction
16. What is the primary purpose of custom exceptions in .NET?
Answer: To provide detailed error information
Explanation: Custom exceptions are primarily used to provide detailed error information specific to an application.Report for correction
17. Which exception is thrown when an invalid type conversion is attempted in C#?
Answer: InvalidCastException
Explanation: An InvalidCastException is thrown when an invalid type conversion is attempted in C#.Report for correction
18. What is the purpose of the try block in exception handling?
Answer: To define the code that may throw exceptions
Explanation: The try block is used to enclose code that may potentially throw exceptions.Report for correction
19. Which exception is raised when a format of a given string is invalid in .NET?
Answer: FormatException
Explanation: A FormatException is thrown when the format of a given string is invalid.Report for correction
20. What is the purpose of the using statement in C# when working with exceptions?
Answer: To ensure the disposal of resources
Explanation: The using statement is used to ensure the proper disposal of resources, such as file streams, even in the presence of exceptions.Report for correction
21. Which exception is thrown when there is a failure to access a file or directory in .NET?
Answer: UnauthorizedAccessException
Explanation: An UnauthorizedAccessException is thrown when there is a failure to access a file or directory due to permissions.Report for correction
22. In .NET, which exception is thrown when a format of a given date or time is invalid?
Answer: FormatException
Explanation: A FormatException is thrown when the format of a given date or time is invalid.Report for correction
23. What is the purpose of the when keyword in a catch block?
Answer: To filter exceptions based on conditions
Explanation: The when keyword is used to filter exceptions based on specified conditions in a catch block.Report for correction
24. Which exception is thrown when an operation is performed on an object that is in an invalid state?
Answer: InvalidOperationException
Explanation: An InvalidOperationException is thrown when an operation is performed on an object that is in an invalid state.Report for correction
25. What is the primary purpose of exception handling in software development?
Answer: To gracefully handle runtime errors
Explanation: The primary purpose of exception handling is to gracefully handle runtime errors and provide a mechanism for error recovery.Report for correction