A C D E F H K L M N O P Q R S T W
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impersonation 
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The ability of a thread in one process to assume the security identity and privileges of another process. 
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instance provider 
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A COM server that supplies instances of classes and implements methods of the IWbemServices interface to support data retrieval, modification, deletion, enumeration, or query processing. 
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intrinsic event 
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An event that WMI provides, which is a notification of a change in the standard WMI data model. For example, the creation of a new instance of Win32_Process is an __InstanceCreationEvent type of intrinsic event. Also see extrinsic event. 
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instrumentation 
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A mechanism used to report the status of system hardware and software. WMI implements instrumentation by modeling a system using classes based on the Common Information Model (CIM). WMI in the .NET Framework creates instrumented classes by adding attributes.