DNS stands for:

Key Points

• Domain Name System (DNS) is a hierarchical and decentralized naming system used to identify computers, services, and other resources reachable through the Internet or other Internet Protocol (IP) networks.
• It translates more readily memorized domain names to the numerical IP addresses needed for locating and identifying computer services and devices with the underlying network protocols.
• DNS is essential for the functioning of the internet by enabling users to access websites using domain names instead of IP addresses.
• The system is often referred to as the "phonebook of the internet" because it converts humanfriendly domain names into IP addresses that computers use to identify each other on the network.
• DNS servers are responsible for responding to queries from user machines to translate domain names into IP addresses, thus facilitating the routing of data over the internet.

Additional Information

• DNS was created in 1983 and has since become a fundamental component of the internet infrastructure.
• There are several types of DNS records, including A records (address records), MX records (mail exchange records), and CNAME records (canonical name records), each serving different purposes.
• DNS security is crucial, and techniques like DNSSEC (DNS Security Extensions) are used to protect against certain types of attacks, such as DNS spoofing or cache poisoning.