Special Edition Using TCP/IP, Second Edition

Summary

Domain Name System (DNS) enables users to provide descriptive names to identify and access a computer on a network. DNS is a distributed database that contains the details about the mapping between the host names and the corresponding IP addresses. For easy administration of host names or computer names, a standard is followed when creating host names and domain names. This standard is called the domain name hierarchy. The process of resolving host names to IP addresses is called name resolution. The components involved in name resolution are the resolver and the name servers. An application program that wants name resolution to be done passes its query to the resolver. The resolver passes the query to a computer designated as the name ...