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In internet technology, the abbreviation DNS stands for Domain Name System. It is a critical part of how the internet functions. DNS works like a digital phonebook for the internet, helping convert human-readable domain names (like jobexams.pk or google.com) into numerical IP addresses (like 142.250.190.14), which computers use to identify each other on the network.

When you type a website address into a browser, the DNS is responsible for locating the IP address of that website’s server so your device can establish a connection. Without DNS, users would have to remember and enter complex IP addresses instead of easy-to-remember domain names.

The term Domain Name refers to the unique address used to access a website, and System highlights the organized infrastructure of global DNS servers that manage and resolve these queries.

Options like Digital Network Service, Domain Numbering System, or Data Node Server are not accurate or recognized terms in internet protocols. The only correct and technically valid full form of DNS is Domain Name System, which plays a central role in website access, email delivery, and virtually every internet-based activity.