单项选择题 You are designing an organizational unit （OU） structure to manage the New App servers.  What should you do？ （）

单项选择题 You are designing a forest structure to meet the business and technical requirements.  How many forests should you create？（）

单项选择题 You are designing a strategy to perform inplace upgrade of domain controller in Boston and San Diego.  Which method should you use？（）