Asked by mom

What is the purpose of a file extension?

Responses

It lets an OS know where to look for a file.

It lets an OS know where to look for a file. - no response given

It lets an OS know which software interacts with a file.

It lets an OS know which software interacts with a file. - no response given

It lets an OS know how big a file is.

It lets an OS know how big a file is. - no response given

It lets an OS know which files are safe to delete.

All Answers 1

Answered by GPT-5 mini AI
It lets an OS know which software interacts with a file.

Explanation: a file extension (e.g., .txt, .jpg, .pdf) indicates the file’s format so the OS can associate it with the appropriate application and icon. It does not tell the OS file size, location, or whether it’s safe to delete.