C# File IO MCQs

Question 1: Which of the following static class will you use for file I/O operations?

• FileInfo
• File
• Directory
• Path

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Question 2: Which of the following class is the base class for all I/O operations from different sources?

• System.IO.Stream
• System.IO.FileStream
• System.IO.MemoryStream
• System.IO.NetworkStream

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Question 3: What does the following code do?

File.WriteAllText(@"C:\DummyFile.txt", "This is dummy text");

• Creates a new file and writes the text to the DummyFile.txt
• Creates a new file and writes the text to the DummyFile.txt. If the file already exists, then throw an exception.
• Creates a new file and writes the text to the DummyFile.txt. If the file already exists, then overwrite the text to the file.
• Opens file for reading or write operation.

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