以下关于WindowsServer2003域管理模式的描述中，正确的是（）。
- A.域间信任关系只能是单向信任
- B.单域模型中只有一个主域控制器，其他都为备份域控制器
- C.如果域控制器改变目录信息，应把变化的信息复制到其他域控制器
- D.只有一个域控制器可以改变目录信息
正确答案及解析
正确答案
解析
Windows的活动目录包括域、域树、域林的概念，因此自然不会只有一个主域控制器，也不会只有一个域控制器可以改变目录信息了。域间信任关系有单向信任和双向信任两种。
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