单项选择题
A.Generate a self-signed certificate.
B.Request a Computer certificate from the contoso.com CA
C.Create a computer certificate request and submit the request to a third-party trusted CA
D.Create a computer certificate request and submit the request to the Northwind Traders CA
单项选择题 You have an Exchange Server 2010 organization.You plan to enable Federated Sharing.You need to create a DNS record to store the Application Identifier （AppID） of the domain for the federated trust. Which type of record should you create？（）
单项选择题 You have an Exchange Server 2010 organization.Users report that they can share free/busy information with users at a federated partner， but they cannot share contacts with those users. You need to ensure that your users can share contacts with users at the federated partner. What should you modify？（）
单项选择题 YouhaveanExchangeServer2010organization.YouneedtoensurethatausernamedUser1canaccesshismailboxbyusingonlyOutlookWebApp.Whatshouldyoudo？（）