Kinds of DNS Service
Recursive DNS – Commonly, clients do not make queries that are directed to an authoritative DNS service. In place of that, they commonly link to another kind of DNS service which is called a recursive DNS or a resolver. A recursive DNS service does its job similar to a hotel concierge though it does not possess any DNS records. This performs its job as an intermediary that can possess the DNS info on people’s behalf. Now, if a recursive DNS has got the DNS referenced cached or preserved for a period, then it will answer the DNS queries by proposing the IP or source information. When it isn’t, then it goes through the query to one or more than one authoritative DNS server that would provide the information.
Authoritative DNS – The authoritative DNS service does propose an up-to-date mechanism that a developer can use for managing his public DNS names. After this, it answers to the queries of DNS, transforming DNS domain names into various IP addresses for making the job of the computer smoother for having communication with one another. Authoritative DNS has got the final authority and is liable to provide queries to recursive DNS servers having the IP address info. An example of an authoritative DNS system is Amazon Route 53.
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What Makes DNS Important?
DNS is similar to a phone book and when you are aware of a person’s name but do not aware of his phone number, then you can observe it in a phone book. The job of DNS is proposing this kind of service. If you visit https://dyn.com, then your computer makes use of DNS for retrieving the IP address of your website, which is 50.16.85.103. But, on the other hand, when you don’t have DNS, then you will be capable of visiting the website by visiting the IP address only, like http://50.16.85.103.
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The Working Mechanism of DNS
DNS maintains a directory containing domain names before translating them into IP (Internet Protocol) addresses and it is very important as though domain names turn out to be easy for people to recall, machines or computers access sites grounded on IP addresses. Information from every domain name server all across the internet is accumulated and housed right at the Central Registry.