What does a .txt file store?
Plain text only, no formatting
Difference between .docx and .pdf?
.docx is editable; .pdf is fixed layout for viewing/printing
Why are .pdf files good for printing?
They preserve layout on all devices
Which supports basic formatting: .txt or .rtf?
.rtf
Which image file supports transparency?
.png
Main advantage of .jpg/jpeg?
Smaller size, good for photos
Why is .png larger than .jpg?
Less compression, higher quality
Which image type supports animation?
.gif
Difference between .mp3 and .wav?
.mp3 compressed; .wav uncompressed
Which audio format is high quality?
.wav
Why is .mp4 common?
Small size + high quality + widely supported
Difference between .mov and .mp4?
.mov is Apple format, usually larger
Purpose of a .zip file?
Compress multiple files into one
What is needed before using ZIP/RAR files?
Extraction
Which compresses better: .zip or .rar?
.rar
What does .html store?
Webpage structure
Which file controls webpage styling?
.css
Which file adds interactivity to webpages?
.js
What is a .py file?
Python script
What is an .exe file?
Executable program
What does .csv stand for?
Comma-separated values
Which file type is Excel spreadsheets?
.xlsx
What is .json used for?
Storing structured data
What is an .apk file?
Android app installer
