Fundamentals of computer science. What is a file extension?

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• : txt, .doc (.docx), .rtf.
• -: .htm .html.
• : .zip, .rar.
• : .jpg (.jpeg), .png, .bmp, .gif, .tiff.
• : .mp3, .wav, .wma, .cda.
• : .avi, .wmv, .mpg (.mpeg), .MPEG-4, .wmv, .flv, .vob, .mdv, .swf.
• : .ppt (.pptx).
• : .xls (.xslx).
• : .ttf, .otf.
• : .pdf, .epub, .fb2, .djvu.
• : .mdb, .accdb.
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3. Select the desired program in the list that appears and check the box next to "Always use this application ...".
4. Click OK.

This means that the system will now open such a file extension using the program you selected. In Windows 8 and 10, if a suitable application is not found on the PC, you also have the opportunity to find it in the "Store".