March 2018
Intermediate to advanced
626 pages
17h 32m
English
User programs (web browser, mail client, and many others) interact with the DNS server through a resolver, which is also part of the operating system. The resolver interacts with external name servers that provide it with the required IPs (the name server can be local or remote; it is external to the resolver). The way the user queries the DNS server is OS specific. DNS queries and responses are sent and received between the resolver and the name server. It is shown in the following diagram:

The local name server is usually located in the organization network, and interacts with the DNS server of your ISP. In the case of a home ...
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