They provide answers to the queries sent by recursive DNS nameservers, providing information on where to find specific websites. Authoritative DNS servers have a copy of the “phone book” that connects these IP addresses with their corresponding domain names. To use the phone book analogy, think of the IP address as the phone number and the person’s name as the website’s URL. 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. DNS recursor: The DNS recursor, which is also referred to as a DNS resolver, receives the query from the DNS client.The four servers work with each other to get the correct IP address to the client, and they include: In a usual DNS query, the URL typed in by the user has to go through four servers for the IP address to be provided.
0 kommentar(er)
