Question

5. What is a File extension? How does it help the operating system?​

Answer 1

Answer:

A file extension, sometimes called a file suffix or a filename extension, is the character or group of characters after the period that makes up an entire file name. The file extension helps an operating system, like Windows or macOS, determine which program on your computer the file is associated with.

Answer 2

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A file extension or file name extension is the ending of a file that helps identify the type of file in operating systems, such as Microsoft Windows . In Microsoft Windows, the file name extension is a period that is often followed by three characters but may also be one, two, or four characters long.