Your network consists of an Active Directory domain that contains the domain controllers shown in thefollowing table.You plan to deploy an Exchange Server 2010 server in each site. 
You need to recommend changes to the domain controllers to support the installation of Exchange Server2010.
What should you do？（）

You are the enterprise administrator for an Exchange Server 2010 organization. All users run Microsoft Office Outlook 2010. 
You are designing a sharing solution for your organization and a partner organization. The partner organization also uses Exchange Server 2010. 
You need to recommend a strategy for sharing information with the partner organization to meet thefollowing requirements：
.Provide cross-organizational access to user contacts 
.Provide cross-organizational access to free\busy information
What should you recommend？（）