This is the extension for the second part of a split ZIP or 7z archive. You would typically need part z01 , z02 , and the final .zip file in the same folder to extract the full installer. Technical & Security Context Update history for Office 2016 C2R and Office 2019
The string refers to a multi-part download archive for Microsoft Office 2016 (specifically version 16.0.15629.20208) hosted on the Arabic software site FaresCD . Components of the File String Download FaresCD Com Office16 15629 20208 mul Link2GB z02
Likely stands for Multilingual , indicating the installer includes multiple language packs. This is the extension for the second part
Indicates that the download is split into chunks of 2 GB each. Download FaresCD Com Office16 15629 20208 mul Link2GB z02