Domain Name System

DNS is a distributed client/server networked database used by TCP/IP application to map between host names - IP addresses.

Each site maintains their own databses and has a server program. Other clients in the Internet can query the program.

DNS provides a protocol so that clients - servers and servers - servers can communicate.

 

DNS name space is the set of all names used with DNS.

특징: partitioned hierarchically (트리 구조), case insensitive. (컴퓨터 파일 시스템의 디렉토리/파일명의 경우와 비슷)

Top parts: top level domains(TLDs)

 

 

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