What does a file extension like .jpg or .mp3 usually tell you?
AnswerThe file's type or format
The extension after the dot signals the format so the computer knows which app can open it.
Tech · Facts & stats
File facts & stats
7 fact-checked facts about computer files and formats, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
On a computer, a folder is also known as what?
AnswerA directory
Folders and directories are the same thing: containers that organize files.
Going deeper
What does PNG stand for?
AnswerPortable Network Graphics
PNG, Portable Network Graphics, is an image format with lossless compression.
Which file extension is used for a plain text file?
Answer.txt
The .txt extension marks a simple, unformatted text file.
In Windows file paths, which character separates folder names?
AnswerBackslash (\)
Windows paths like C:\Users\Docs use backslashes, while Unix-like systems use forward slashes.
Expert level
What does JPEG stand for?
AnswerJoint Photographic Experts Group
JPEG is named after the Joint Photographic Experts Group committee that created the standard.
On Unix-like systems, a file whose name starts with a dot, like .profile, is usually what?
AnswerHidden from normal listings
Files starting with a dot are hidden by default, a convention often used for configuration files.
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