Domain DNS stands for Domain Name System, a service that translates human-readable domain names (such as tutosquad.com) into computer-readable IP addresses (such as 192.168.0.1). This allows users to access websites and other online resources without having to memorize long strings of numbers.

The Domain Name System is hierarchical and distributed, meaning that it consists of different levels of servers that store and exchange information about domain names and IP addresses. The top level of the hierarchy is the root zone, which contains information about the top-level domains (such as .com, .fr, .org, etc.). Below the root zone are the authoritative name servers, which are responsible for specific domains and subdomains (such as tutosquad.com, www.tutosquad.com, blog.tutosquad.com, etc.).

When a user types a domain name in their browser, the browser sends a query to a resolver, which is usually provided by the user’s Internet Service Provider (ISP). The resolver then contacts the root servers to find out which authoritative name server is responsible for the domain name. The resolver then contacts the authoritative name server to obtain the IP address of the domain name. The resolver then returns the IP address to the browser, which can then connect to the website.

The Domain Name System also supports other types of records, such as MX records (which specify the mail servers for a domain), CNAME records (which create aliases for a domain), TXT records (which provide additional information about a domain), and many more. These records can be used for various purposes, such as email delivery, security verification, load balancing, etc.

The Domain Name System is an essential component of the Internet infrastructure, as it enables users to access websites and online services easily and efficiently. Without it, users would have to remember and type complex IP addresses for every website they want to visit.

Sources:

• Domain Name System — Wikipédia
• DNS Lookup – Check DNS Records – DNS Checker

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