The file is the second segment of a multi-part compressed archive created using 7-Zip .
While "RUS-21" is a generic naming convention, it frequently appears in specific technical and governmental contexts: RUS-21.7z.002
: Ensure you have RUS-21.7z.001 , RUS-21.7z.002 , and any subsequent numbered parts in one directory. Use 7-Zip : Right-click on the .001 file. The file is the second segment of a
Because it is a "split" archive file, it does not contain a complete set of data on its own. To access its contents, you must have all corresponding parts (e.g., .001 , .002 , .003 ) in the same folder. Understanding the Split Archive Format RUS-21.7z.002
: The .002 suffix indicates this is the second "volume" of a set [ 1.2.1 ].