Page 584 - Using MIS

552 Glossary

Virtualization The process whereby multiple operating sys- Wide area network (WAN) A network that connects com-
tems run as clients on a single host operating system. Gives puters at different geographic locations. 214
the appearance of many computers running on a single Windows RT A version of Windows 8 that is specifically de-
computer. 129 signed to provide a touch-based interface for devices that
Virus A computer program that replicates itself. 407 use ARM architecture, including phones, tablets, and some
Volatile Data that will be lost when the computer or device is computers. 128
not powered. 119 Windows Server A version of Windows that has been spe-
Vulnerability An opportunity for threats to gain access to cifically designed and configured for server use. It has
individual or organizational assets. Some vulnerabilities ex- much more stringent and restrictive security procedures
ist because there are no safeguards or because the existing than other versions of Windows and is popular on servers
safeguards are ineffective. 390 in organizations that have made a strong commitment to
WAN wireless A communications system that provides wire- Microsoft. 128
less connectivity to a wide area network. 217 Work breakdown structure (WBS) A hierarchy of the tasks
Wardriver People who use computers with wireless connec- required to complete a project; for a large project, it might
tions to search for unprotected wireless networks. 393 involve hundreds or thousands of tasks. 477
Waterfall method The assumption that one phase of the Workflow control Collaboration tool feature in which soft-
SDLC can be completed in its entirety and the project can ware manages the flow of documents, approvals, rejec-
progress, without any backtracking, to the next phase of the tions, and other characteristics among a collaborating
SDLC. Projects seldom are that simple; backtracking is nor- team. 60
mally required. 483 Workgroup information system An information system that
Web 2.0 A dynamic system that uses user-generated supports a particular department or workgroup. 253
content. 317 Workgroup process A process that exists to enable work-
Web page Document encoded in html that is created, trans- groups to fulfill the charter, purpose, and goals of a particu-
mitted, and consumed using the World Wide Web. 220 lar group or department. 253
Web servers Programs that run on a server-tier computer and Worm A virus that propagates itself using the Internet
that manage http traffic by sending and receiving Web pages or some other computer network. Worm code is writ-
to and from clients and by processing client requests. 220 ten specifically to infect another computer as quickly as
Webinar A virtual meeting in which attendees can view a possible. 407
common presentation on the computer screen of one of the Zettabyte (ZB) 1,024 EB. 118
attendee’s for formal and organized presentations. 49