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Appendix B Glossary
DHCP
DHCP is a protocol for automatic IP configuration. Client side computer can get one IP
from DHCP server automatically. Using DHCP can save the effort of setting IP for
every LAN computers.
Dial-in
Dial in is the function for remote user to access office LAN by Modem/ISDN TA
connection. Just like you dial up to ISP, Gateway Hub can act as a small ISP that
telecommuter and travelling employee can access LAN using standard dial up
program.
Dial-up Access
Refers to connecting a device to a network via a modem and a public telephone
network. Dial-up access is really just like a phone connection, except that the parties at
the two ends are computer devices rather than people. Because dial-up access uses
normal telephone lines, the quality of the connection is not always good and data rates
are limited, but new technologies such as ISDN are providing faster rates.
An alternative way to connect two computers is through a leased line, which is a
permanent connection between two devices. Leased lines provide faster throughput
and better quality connections, but they are also more expensive.
Domain Name
A name that identifies one or more IP addresses. For example, the domain name
microsoft.com represents about a doze IP addresses. Domain names are used in
URLs to identify particular Web pages. For example, in the URL
http://www.pcwebopedia.com/index.html, the domain name is pcwebopedia.com.
IEEE
Abbreviation of Institute of Electrical and Electronics Engineers, pronounced I-triple-E.
Founded in 1884, the IEEE is an organization composed of engineers, scientists, and
students. The IEEE is best known for developing standards for the computer and
electronics industry. In particular, the IEEE 802 standards for local-area networks are
widely followed.
Internet
A global network connecting millions computers. As of 1998, the Internet has more
than 100 million users worldwide, and that number is growing rapidly. More than 100
countries are linked into exchanges of data, news and opinions.