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What is DNS (Domain Name System) and How it Works?

DNS (Domain Name System) is a system that translates domain names, such as www.guruhost.net, into IP addresses, which are unique identifiers assigned to every device connected to the internet. Here is how the DNS works: A user types a domain name into their web browser: For example, the user types "www.guruhost.net" into their web browser. The DNS resolver sends a query to the DNS server: The DNS resolver, which is typically provided by the user's Internet Service Provider (ISP), sends a query to a DNS server to request the IP address associated with the domain name. The DNS server searches its database: The DNS server checks its database for the IP address associated with the domain name. If it doesn't have the IP address, it sends a query to other DNS servers until it finds the IP address. The DNS server returns the IP address to the DNS resolver: Once the DNS server finds the IP address associated with the domain name, it returns the IP address to the DNS resolver. The DNS resolver sends the IP address to the user's device: The DNS resolver sends the IP address to the user's device, which then connects to the IP address to access the website. This process typically happens very quickly and transparently to the user. The DNS system is crucial to the functioning of the internet because it allows users to access websites using easy-to-remember domain names rather than having to remember IP addresses.
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