<ul><li>The DNS hierarchy is a structured and distributed database that maps domain names to IP addresses.</li><li>It starts from the root servers and drills down through TLDs, second-level domains, and subdomains.</li><li>DNS resolution process involves checking local cache, querying recursive resolvers, root servers, TLD servers, and authoritative name servers.</li><li>The hierarchical design of DNS provides scalability, reliability, efficiency, and security benefits.</li></ul>

DNS Hierarchy: Everything You Need To Know

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