DOMAIN NAME SYSTEM Paper Presentation

DOMAIN NAME SYSTEM
Although programs theoretically could refer to hosts, mailboxs and other resources by their network (e.g., IP) addresses, these addresses are hard for people to remember. Also, sending e-mail to tana@128.111.24.41 means that if Tana�s ISP or organization moves the mail server to a different machine with a different IP address, her e-mail address has to change.Consequently, ASCII names were introduced to decouple machine name from machine addresses. In this way, Tana�s address might be something like that tana@art.ucsb.edu.Nevertheless, the network itself understands only numerical address-es, so some mechanism is required to convert the ASCII strings to network addresses. In the following sections we will study how this mapping is accomplished in the internet. Download Presentation