zip
 

hi what is a zip file/folder ??

A zip file is an archive file. A zip file compresses the size of item(s) inside it. Zip files can be opened with a range of programs such as WinZip, TugZip, ... etc. But even Windows XP & later have a built in archive opener.

More information on ZIPs File Extension .ZIP Details (ignore the registry advert in middle of page) and also http://en.wikipedia.org/wiki/ZIP_(file_format)

Just be wary of any ZIP file you find on gnutella network. Always scan it first with your anti-virus software. ;)

Other common archive formats: RAR, 7z, Tar, sit, ...