![]() It shares the DNS server load and acts as a backup if the master server fails. ![]() The master server keeps the original copies of the zone records, while the slave server is an exact copy of the master server. There are two types of authoritative nameservers: a master server or primary nameserver and a slave server or secondary nameserver. Authoritative nameservers: An authoritative nameserver is what gives you the real answer to your DNS query.It then releases the website’s IP address and sends the query to the domain’s nameserver. TLD nameservers: A TLD nameserver keeps the IP address of the second-level domain contained within the TLD name.It answers requests by sending back a list of the authoritative nameservers that go with the correct TLD. Its job is to answer requests sent to it for records in the root zone. Root nameservers: The root nameserver is designated for the internet's DNS root zone.As it does this, it makes queries that get sent to the other three DNS servers: root nameservers, top-level domain (TLD) nameservers, and authoritative nameservers. ![]() After the resolver retrieves the request from the client, the resolver acts like a client itself. Then it communicates with other DNS servers to find the right IP address.
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