单项选择题
A. One global catalog server in New York.
B. Two global catalog servers in New York.
C. One global catalog server in Chicago and one global catalog server in New York.
D. Two global catalog servers in Chicago and two global catalog servers in New York.
E. One global catalog server in Chicago， one global catalog server in New York， and one global catalog server in Boston.
单项选择题 You are designing a strategy to upgrade the DHCP servers after the new Active Directory structure is in place. Who can authorize the DHCP servers？（）
多项选择题 You are designing a DNS implementation strategy for the network. Which two zone types should you use？（）
单项选择题 You are designing the DNS infrastructure to meet the business and technical requirements. What should you do？（）