By providing a root zone file, you can let your DNS server query the root Internet servers for information about other hosts on the Internet.

通过提供根区域文件，您可以让DNS服务器查询根internet服务器中关于Internet上的其他主机的信息。

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While Siri is going back and forth multiple times, Google is resolving the statement of the query on the client and then making a single request to the server.

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The server then sends back an answer with perhaps 100 times more data than the original query.

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