- WAN (Wide Area Network) A network which covers a larger geographical area than a LAN and where telecommunications links are implemented, normally leased from the appropriate PTO(s). Examples of WANs include packet switched networks, public data networks and Value Added Networks.
- WCMB worst-case modal bandwidth
- Wiring closet Location, usually a physical box in which the cabling on a particular floor is terminated, typically in a wiring frame.
- Wiring frame Frame used to organize and manage the termination and connection of multiple cables.
- Windowing Generic method of displaying data on screen, mimicking looking at several pieces of paper at once. Each window can be resized, moved and otherwise manipulated. It lies at the heart of making multiuser systems user-friendly and points the way for presetting tomorrow's applications.
- Windows The now ubiquitous Microsoft standalone operating system with integral graphical user interface, running on top of MS Dos. Version 4.0 is imminent.
- Windows for Workgroups (WFWG) A Microsoft operating system running on each PC that allows between two and 20 users to share information such as files and e-mail by clicking on icons. There is no server as such, but WFWG is compatible with NetWare and LAN Manager.
- Windows NT (New Technology) Microsoft's scalable 32-bit version of Windows aimed at high-end workstation "power" users. It is a standalone operating system that is also a "network ready" system capable of being a small application server for a workgroup of Windows based PCs.
- Windows NT Advanced Server (NTAS) An extension of Microsoft's Windows NT and incorporating all its features, NTAS is a server operating system offering centralized management and security, fault tolerance and multiple connectivity options. Geared to client/server computing on practically any network, not least NetWare and Vines as well as LAN Manager.
- WOSA (Windows Open Service Architecture) A framework of open-ended interfaces allowing Microsoft Windows and applications running under it to integrate with enterprise computing environments. It includes APIs for messaging (MAPI), standard access to databases (ODBC) and extensions to financial services.
- Workflow automation The flow of documents around an organization in a prescribed order (workflow) can be automated, delivering an hierarchical and controlled form of workgroup computing. Workgroup computing - Method of organizing a business around productive teams using computer support to enable cooperative working and to eliminate time/space restrictions. An extension of conventional LAN working.
- Workstation Term used freely to mean a PC, node, terminal or high-end desktop processor (for CAD/CAM and similar intensive applications) - in short, a device that has data input and output and operated by a user.
- WPAN Wire-less Personal Area Network; personal area means up to 10 meter radius. Example: Bluetooth, IEEE 802.15
- Wrap Redundancy measure in IBM token ring LANs. Trunk cabling used in token ring TCUs contains two data paths: a main and back-up (normally unused). If the trunk cable is faulty, the physical disconnection of the connector at a TCU causes the signal from the main path to wrap onto the back-up and maintain the loop.