1 | Internet and TCP/IP service that maps network addresses , for example, 128.230.117.25, to an easy to remember names, such as merkury.npac.syr.edu |
2 | TCP/IP tools (like telnet, ftp, smtp) access DNS to locate names and resolve them into IP addresses |
3 | Names and numeric addresses are stored in many locations in a hierarchical structure. Each site has a domain name server that maintains information about the local hosts |
4 | Unix: /etc/hosts |
5 | Windows NT: \WinNT\system32\drivers\etc\hosts |
6 | 127.0.0.1 localhost |
7 | 128.230.117.25 merkury.npac.syr.edu merkury |