Updated protocols available for downloading electronically for use with Windows for Workgroups 3.11 Microsoft TCP/IP for Windows for Workgroups 3.11 and the Microsoft Data Link Control (DLC) Protocol for Windows for Workgroups 3.11 are now available for downloading. Microsoft TCP/IP for Windows for Workgroups includes the NDIS 2 protocol stack to support connecting computers running Windows for Workgroups together or computers running Windows for Workgroups to Windows NT and Windows NT Advanced Server using the TCP/IP protocol. Microsoft TCP/IP for Windows for Workgroups does not include any TCP/IP utilities, however support for the Windows Sockets Interface is provided allowing any Windows Sockets-compatible TCP/IP utility including terminal emulators and file transfer software. Microsoft Data Link Control (DLC) Protocol for Windows for Workgroups allows computers running Windows for Workgroups to operate in IBM SNA environments and to connect to mainframes and minicomputers, such as the AS/400. The DLC interface is most commonly used by 3270 terminal emulators to communicate to IBM mainframes. Support of the emulators is the main role of the Microsoft DLC protocol. Products from companies such as DCA, Attachmate, IBM, Microcom, and Wall Data support the Microsoft Data Link Control Protocol.