What is the role of DNS in networking?

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The role of DNS, or Domain Name System, is to translate human-readable domain names, such as www.example.com, into machine-readable IP addresses, such as 192.0.2.1. This process is crucial because while humans find it easier to remember names, computers operate using numerical IP addresses to identify and communicate with each other over the network. The DNS functions like a phone book for the internet; when you enter a URL into your browser, the DNS server resolves that domain name to its corresponding IP address, allowing the browser to retrieve the correct website.

This functionality is vital for seamless internet navigation. Without DNS, users would need to remember and enter complex numerical IP addresses for every website they wish to visit, which would make the internet significantly less user-friendly. The accuracy and availability of DNS services are critical for the overall performance of browsing, applications, and various internet services, making it a foundational component of networking.

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