You work as the enterprise exchange administrator at Xxx .The Xxx network consists of a domain named xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.You have to have the Application Identifier of xxx stored in a DNS record.The Application Identifier is used for the federated trust.What actions must you take on the DNS?()
- A、You must set up recipient filtering.
- B、You must set up a Host (A).
- C、You must use a TXT record.
- D、You must use a Pointer (PTR) record.
- E、You must use a Mail exchange (MX) record.
正确答案:C
答案解析:有

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