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DNS query Process

Source: Internet
Author: User
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DNS query process-Linux Enterprise Application-Linux server application information. For details, refer to the following section. When host A wants to access a. B .com, it submits the dns to query the dns server set by host A. the dns server performs the following operations:

Check whether there are records. If yes, return the results to host A. If no, continue to the next step.

When the dns server submits a query to the top-level domain (root), the root will return the address of the management. com server.

The dns server manages the. com Server query to obtain the IP address of the dns host that manages. B .com.

The dns server manages the Server Query of. B .com and returns the IP address of a. B .com to host A, and stores the result in the local cache. The query results for the same domain name are directly provided.

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