What (who) is DNS - definition

SYSTEM TO IDENTIFY RESOURCES ON A NETWORK

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DNS

DOMAIN Name System (Reference: Internet, RFC 1034/1035, DNS)

DNS

¦ abbreviation Computing

1. domain name server, the system that automatically translates Internet addresses to the numeric machine addresses that computers use.

2. domain name system, the hierarchical method by which Internet addresses are constructed.

DNS

1. Domain Name System. 2. Distributed Name Service. See DECdns.

Wikipedia

Domain Name System

The Domain Name System (DNS) is a hierarchical and distributed naming system for computers, services, and other resources in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names assigned to each of the associated entities. Most prominently, it translates readily memorized domain names to the numerical IP addresses needed for locating and identifying computer services and devices with the underlying network protocols. The Domain Name System has been an essential component of the functionality of the Internet since 1985.

The Domain Name System delegates the responsibility of assigning domain names and mapping those names to Internet resources by designating authoritative name servers for each domain. Network administrators may delegate authority over sub-domains of their allocated name space to other name servers. This mechanism provides distributed and fault-tolerant service and was designed to avoid a single large central database.

The Domain Name System also specifies the technical functionality of the database service that is at its core. It defines the DNS protocol, a detailed specification of the data structures and data communication exchanges used in the DNS, as part of the Internet Protocol Suite.

The Internet maintains two principal namespaces, the domain name hierarchy and the IP address spaces. The Domain Name System maintains the domain name hierarchy and provides translation services between it and the address spaces. Internet name servers and a communication protocol implement the Domain Name System. A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database.

The most common types of records stored in the DNS database are for start of authority (SOA), IP addresses (A and AAAA), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS lookups (PTR), and domain name aliases (CNAME). Although not intended to be a general purpose database, DNS has been expanded over time to store records for other types of data for either automatic lookups, such as DNSSEC records, or for human queries such as responsible person (RP) records. As a general purpose database, the DNS has also been used in combating unsolicited email (spam) by storing a real-time blackhole list (RBL). The DNS database is traditionally stored in a structured text file, the zone file, but other database systems are common.

The Domain Name System originally used the User Datagram Protocol (UDP) as transport over IP. Reliability, security, and privacy concerns spawned the use of the Transmission Control Protocol (TCP) as well as numerous other protocol developments.

https://en.wikipedia.org/wiki/Domain Name System

Pronunciation examples for DNS

1. The same as DNS.

The Internet as DIY connectivity _ Bob Frankston _ Talks at Google

2. is on CloudFlare's DNS.

Escape Censorship with Lantern _ Adam Fisk _ Talks at Google

3. or even instead of the DNS. So the DNS isn't necessarily fixed in the

Reimagining the Internet _ Vint Cerf _ Talks at Google

4. specifically to be able to DNS?

The Florentine Deception _ Carey Nachenberg _ Talks at Google

5. These numbers represent Google's public DNS servers,

ted-talks_2398_RodrigoBijou_2015G-320k

Examples of use of DNS

1. The thrust of the DNS flaw is that it allows hackers to attach bad information to packets flowing in and out of DNS servers so they change the directions they give to certain Web sites.

2. General Assembly–sanctioned meeting to consider competing proposals on the future of Internet governance, and specifically the domain name system (DNS).'4; The DNS is the equivalent of a telephone directory for the Internet.

3. "They are looking for a handle, thinking that the DNS is the meaning of life.

4. "But we are not going to bureaucratise, politicise and retard the management of the DNS.

5. "It‘s clearly not good if one country can say no to what (DNS changes) are made in Sweden, for example.