If the archive is password‑protected, add -pYOUR_PASSWORD (7‑Zip) or -pYOUR_PASSWORD (WinRAR) be aware that passwords appear in command history; for security use the interactive prompt ( -p without a value).
The name follows a specific pattern used by automated file-sharing networks and databases: JUC-675 C l .rar
The archive could contain a variety of file types, such as documents, images, videos, or software. Without extracting the contents, it's impossible to know for certain. If the archive is password‑protected
# Using unrar (non‑free) unrar x "JUC-675 C l .rar" /path/to/destination/ such as documents