: Large datasets can be split into multiple smaller RAR files for easier sharing.
Since "Datei herunterladen" is German for "download file," it is highly likely that this file was encountered on a German-language website or service.
: They can be encrypted with AES-256 passwords to protect the contents. How to Open this File
: RAR files can include "recovery records" to help repair the file if it becomes slightly corrupted during download.