Chapter 55. DNS NAME SERVER CONCEPTS AND OPERATION
Of all the components and functional elements that combine to form the Domain Name System (DNS), name servers are arguably the most important. These servers, which may be either dedicated devices or software processes running on machines that also perform other tasks, are the workhorses of DNS. They store and manage information about domains, and respond to resolution requests for clients—in some cases, millions of times each day. Understanding how they perform this most basic task and the many support jobs for which they are also responsible is crucial to understanding DNS as a whole.
In this chapter, ...
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