What Does Windows 2000 (W2K) Mean?

Windows 2000 is an operating system designed by Microsoft to run application programs, store files, support networking and provide other features like multimedia and entertainment. It was originally named as Windows NT 5.0 since it was the successor of Windows NT 4.0. Windows 2000 was released on February 17, 2000

Techopedia Explains Windows 2000 (W2K)

Windows 2000 offers a host of features compared to its predecessors. Windows Desktop Update, Internet Explorer 5, FAT32 system support, Outlook Express, Connection Sharing, Net Meeting, Windows Driver Model, Windows Media Player are some of the new features incorporated in Windows 2000. It was also the first version to support hardware independent Hibernation. A File protection system was developed that allows only operating system based programs like Windows Installer and Registry to make changes to the Windows operating system core files. The System File Checker uses an integrity check to determine if the operating system core files have been modified and the user can always get rid of the tampered file by replacing it with the original file with the help of DLLCACHE.