A management domain typically contains a large amount of management information. Each individual item of()information is an instance of a managed object type. The definition of a related set of managed()types is contained in a Management Information Base (MIB) module. Many such MIB modules are defineD. For each managed object type it describes, a MIB()defines not only the semantics and syntax of that managed object type, but also the method of identifying an individual instance so that multiple()of the same managed object type can be distinguisheD. Typically, there are many instances of each managed object()within a management domain.
Each individual item of（）information is an instance of a managed object type.
A．rotation
B．switch
C．management
D．transmission
参考答案：C
解析：
一个管理域通常包含了大量的管理信息。每一项管理信息都是某一种管理对象类型的一个实例。被管理对象类型的相关集合的定义包含在一个管理信息库(MIB)模块中。许多这样的M田模块已经被定义。对于它描述的每一个被管理对象类型，MIB模块不仅定义了那个被管理对象类型的语义和语法，而且也定义了标识单个实例的方法，这样就可以对同一被管理类型的多个实例进行区分。通常，在一个管理域中，每一个被管理对象类型都有许多个实例。