单项选择题 You have an Exchange Server 2010 organization.You install a new Client Access server in the organization.You need to verify whether users can access the new Client Access server by using Outlook Web App. What should you do？（）

单项选择题 You have an Exchange Server 2010 organization that contains one Mailbox server.All users connect to Exchange by using Microsoft Office Outlook 2010.You need to identify the latency of client connections to the Mailbox server. What should you run？（）

单项选择题 YoudeployanewExchangeServer2010organization.Yousendatestmessagetoanexternalrecipientandimmediatelyreceivethefollowingnondeliveryreport（NDR）：Deliveryhasfailedtotheserecipientsorgroups：User1@contoso.com（user1@contoso.com）. Therecipient’se-mailsystemisn’tacceptingmessagesnow.Pleasetryresendingthismessagelaterorcontacttherecipientdirectly.±Youverifythatyoucansuccesfullysendane-mailmessagetoUser1@contoso.comfromanexternale-mailsystem.Youneedtoensurethatyoucansende-mailstoexternalrecipientsfromwithintheExchangeorganization. Whatshouldyoucreate？（）