C# File and Directory Handling Quiz

Welcome to the C# File and Directory Handling Quiz! This quiz is designed to test your knowledge of the key concepts and techniques covered in the C# file and directory handling chapter. You will encounter questions on classes and methods from the System.IO namespace, including how to work with files, directories, paths, and streams. This quiz will help reinforce your understanding of how to create, delete, read, and write files, handle exceptions, and manage paths in C#

Which C# class should be used to work with binary data in files?

StreamWriter

StreamReader

TextReader

BinaryReader

None

What is the effect of calling File.Move() on an existing file?

It renames the file

It moves the file to a different directory

It moves the file and renames it

It copies the file

None

What method should be used to ensure a StreamWriter is properly disposed of?

EndWrite()

Close()

Abort()

Dispose()

None

Which class in C# is used to write primitive types to a binary file?

FileWriter

TextWriter

StreamWriter

BinaryWriter

None

What method is used to read all lines from a file into a string array?

File.ReadAllLines()

File.ReadArray()

File.ReadLines()

File.ReadAllText()

None

What is the correct way to handle exceptions in file and directory operations?

Using try-catch blocks

Using the continue statement

Using finally blocks

Using the if statement

None

Which FileMode option would you use to append data to an existing file?

FileMode.Create

FileMode.Append

FileMode.Truncate

FileMode.Open

None

What method is used to delete a file?

File.Close()

File.Remove()

File.Delete()

File.Clear()

None

What type of file is ideal to be handled with StreamReader and StreamWriter?

Executable files

Compressed files

Binary files

Text files

None

10.

Which method should be used to check the existence of a file?

File.Create()

File.Exists()

File.ReadAllText()

File.Open()

None

11.

What is the root directory symbol in UNIX-style paths?

None

12.

What is the correct way to represent a Windows path in C# to avoid escape sequence issues?

“/\Users/\Documents”

“C:\\Users\\Documents”

“//Users//Documents”

“C:/Users/Documents”

None

13.

Which of the following is an asynchronous file operation?

File.WriteLine()

File.ReadAllTextAsync()

File.OpenAsync()

File.Read()

None

14.

Which namespace in C# contains the classes for handling files and directories?

System.Directory

System.File

System.IO

System.Text

None

15.

Which of the following methods will move a file to a new location?

File.Truncate()

File.Copy()

File.Delete()

File.Move()

None

16.

What happens when you call File.AppendAllText() on a file that already exists?

The method throws an exception

The file is overwritten

The method appends new text to the existing file content

The method deletes the file first

None

17.

What method is used to read all text from a file in C#?

File.ReadAllText()

File.ReadText()

File.Read()

File.OpenRead()

None

18.

Which class provides non-static methods for performing operations like creating, deleting, and reading files in C#?

Path

FileInfo

StreamReader

File

None

19.

In the following code, what is the purpose of the using statement?

using (StreamWriter writer = new("Customers.txt"))
{
 writer.WriteLine("Al Pacino");
}

It automatically closes the file after writing

It handles file locking

It keeps the file open for future operations

It creates a temporary file

None

20.

Which of the following methods writes a string to a file, overwriting the file if it already exists?

File.Copy()

File.WriteAllText()

File.AppendText()

File.Create()

None

21.

What happens if you attempt to delete a non-empty directory using Directory.Delete() without additional parameters?

It throws an I/O exception

It renames the directory

It moves the contents to another folder

It deletes the directory along with its contents

None

22.

What is the purpose of the Directory.SetCurrentDirectory() method?

It moves the directory to another path

It deletes the current directory

It creates a new directory

It changes the current working directory

None

23.

Which of the following is NOT a valid mode for opening a file in C#?

FileMode.Append

FileMode.Open

FileMode.Read

FileMode.CreateNew

None

24.

What method is used to check if a directory exists in the current working directory?

File.Exists()

FileInfo.Exists()

Directory.Exists()

Path.Exists()

None

25.

Which class provides static methods for creating, deleting, and moving directories?

StreamReader