DNS provides a human-readable naming system for internet resources. Instead of remembering numeric IP addresses, users can access resources using domain names like www.example.com.
DNS allows centralized management of domain names through authoritative name servers and distributes the load across multiple servers, providing redundancy and fault tolerance.
DNS servers cache resolved queries locally. This reduces the need to repeatedly query authoritative servers, improving response times and reducing network traffic.
DNS supports dynamic updates, allowing changes to domain records such as IP addresses and mail servers in real-time.
DNS Security Extensions (DNSSEC) is a suite of extensions that add an additional layer of security to DNS responses. It helps prevent various attacks like DNS spoofing and cache poisoning.