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?

StreamReader

StreamWriter

BinaryReader

TextReader

None

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

It moves the file and renames it

It moves the file to a different directory

It renames the file

It copies the file

None

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

Close()

Abort()

EndWrite()

Dispose()

None

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

StreamWriter

BinaryWriter

TextWriter

FileWriter

None

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

File.ReadLines()

File.ReadAllLines()

File.ReadAllText()

File.ReadArray()

None

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

Using the if statement

Using the continue statement

Using try-catch blocks

Using finally blocks

None

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

FileMode.Append

FileMode.Create

FileMode.Open

FileMode.Truncate

None

What method is used to delete a file?

File.Delete()

File.Remove()

File.Close()

File.Clear()

None

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

Binary files

Compressed files

Executable files

Text files

None

10.

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

File.Open()

File.Exists()

File.Create()

File.ReadAllText()

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”

“C:/Users/Documents”

“/\Users/\Documents”

None

13.

Which of the following is an asynchronous file operation?

File.ReadAllTextAsync()

File.OpenAsync()

File.Read()

File.WriteLine()

None

14.

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

System.IO

System.Text

System.File

System.Directory

None

15.

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

File.Copy()

File.Delete()

File.Truncate()

File.Move()

None

16.

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

The method appends new text to the existing file content

The method deletes the file first

The file is overwritten

The method throws an exception

None

17.

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

File.ReadText()

File.OpenRead()

File.ReadAllText()

File.Read()

None

18.

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

File

Path

StreamReader

FileInfo

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 creates a temporary file

It automatically closes the file after writing

It keeps the file open for future operations

It handles file locking

None

20.

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

File.Create()

File.AppendText()

File.WriteAllText()

File.Copy()

None

21.

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

It moves the contents to another folder

It throws an I/O exception

It renames the directory

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 creates a new directory

It changes the current working directory

It deletes the current directory

None

23.

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

FileMode.Read

FileMode.CreateNew

FileMode.Append

FileMode.Open

None

24.

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

Path.Exists()

Directory.Exists()

File.Exists()

FileInfo.Exists()

None

25.

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

DirectoryInfo

StreamReader