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全部科目 > 微软认证考试 > MCITP > MCITP(70-642)

单项选择题

Your company has a single active directory domain named contoso.com. all servers run windows server 2008. You have a public DNS server named server1, and an e-mail server named server2. Client computers outside the company domain are unable to send e-mail messages to contoso.com. you verify that the host (A) DNS record for server2 is available to external client computers. You need to ensure server2 can receive e-mail messages from external client computers. How should you configure the contoso.com DNS zone?()

    A.Add a mail exchange (MX) record for server2.
    B.Add a mailbox (MB) record for server2. Set the mailbox host setting to server2.
    C.Add a canonical (CNAME) record that maps server2 to contoso.com.
    D.Add a server locator (SRV) record for server2. Set the service field to _smtp. Set the protocol field to _tcp. Set the port number to 25.

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