多项选择题
A. Register airlines.com as a new domain name.
B. Register manifest.airlines.com as a new domain name.
C. Register manifest.blueyonderairlines.com as a new domain name.
D. Maintain the existing blueyonderairlines.com registered domain name.
E. Use the UPN suffix of airlines.com for all new users.
F. Use the UPN suffix of blueyonderairlines.com for all new users.
多项选择题 You are designing an authentication solution to meet the security needs of the network administrators. You install an enterprise certification authority （CA）. Which three additional actions should you take？（）
多项选择题 You are designing a top-level OU structure to meet the business and technical requirements. Which top-evel OU or OUs should you use？ （）
单项选择题 You are designing a VPN Server strategy to meet the business and technical requirement. What should you do？ （）