An installation option that gives software the ability to install new features on first use rather than when the application is first installed.
Open Shortest Path First (OSPF)
A routing protocol used in medium- sized and large networks. This protocol is more complex than Routing Information Protocol (RIP), but it allows better control and is more efficient in propagation of routing information. See also protocol; routing; Routing Information Protocol (RIP).
An Active Directory container object used within domains. An organizational unit is a logical container into which users, groups, computers, and other organizational units are placed. It can contain objects only from its parent domain. An organizational unit is the smallest scope to which a Group Policy object (GPO) can be linked, or over which administrative authority can be delegated. See also Active Directory; container object; Group Policy object (GPO); parent domain.
original equipment manufacturer (OEM)
A company that typically purchases computer components from other manufacturers, uses the components to build a personal computer, preinstalls Windows onto that computer, and then sells the computer to the public.
For IIS 5.0 isolation mode, ISAPI extensions that are hosted in a surrogate process called DLLHOST.exe, which is managed by COM+. See also IIS 5.0 isolation mode.