多项选择题 You are designing the Active Directory site topology to meet the business and technical requirements.  Which site or sites will require universal group membership caching？（）

多项选择题 You are designing the security for dial-up remote access to meet the business and technical requirements.   Which two mechanisms should you use？ （）

单项选择题 You are designing the DNS topology to meet the business and technical requirements.   Which DNS structure should you use？（）