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TCP/IP Guide by Charles M. Kozierok

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Chapter 57. DNS MESSAGING AND MESSAGE, RESOURCE RECORD, AND MASTER FILE FORMATS

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Networking is all about the communication of information between connected devices. In the case of the Domain Name System (DNS), information about names and objects on the internetwork is exchanged during each of the many types of operations DNS performs. This involves sending messages between devices. Like most protocols, DNS uses its own set of messages with distinct field formats, and it follows a particular set of rules for generating them and transporting them over the internetwork.

In this chapter, I explain how messages are generated and sent in DNS, and I describe ...

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