December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
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Chapter 3: The Internet and TCP/IP 129
88. Is DNS the only method of name resolution?
DNS is not the only method of name resolution. A simple but inefficient alternative is
to maintain on every local machine a host file that contains the fully qualified domain
names and their respective IP addresses of all the hosts you need to contact. Some operat-
ing systems enable you to use both DNS and host files. For example, a host might be con-
figured to use host table lookup first and DNS second. This way, if a host cannot resolve a
hostname via its local host file, it can then place a DNS query.
89. OK. Let’s move on to IPv6. Why was it developed?
IPv6 was developed ...
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