3Com 3CRWE454G72 User Guide - Page 89

DNS Server Address, Encryption, ESSID, Ethernet, Ethernet Address, Fast Ethernet, Firewall - repeater

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GLOSSARY 89 DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to have a domain name (such as 3com.com) and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a database of host computers and their respective domain names and IP addresses, so that when a domain name is requested (as in typing "3com.com" into your Internet browser), the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned. Encryption A method for providing a level of security to wireless data transmissions. The OfficeConnect Wireless 11g Access Point uses two types of encryption; WPA and WEP. WPA is a more powerful level of encryption than WEP. ESSID Extended Service Set Identifier. The ESSID is a unique identifier for your wireless network. You must have the same ESSID entered into the Access Point and each of it's wireless clients. Ethernet A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation. Ethernet networks use CSMA/CD to transmit packets at a rate of 10 Mbps over a variety of cables. Ethernet Address See MAC address. Fast Ethernet An Ethernet system that is designed to operate at 100 Mbps. Firewall Electronic protection that prevents anyone outside of your network from seeing your files or damaging your computers. Full Duplex A system that allows packets to be transmitted and received at the same time and, in effect, doubles the potential throughput of a link. Half Duplex A system that allows packets to transmitted and received, but not at the same time. Contrast with full duplex. Hub A device that regenerates LAN traffic so that the transmission distance of that signal can be extended. Hubs are similar to repeaters, in that they connect LANs of the same type; however they connect more LANs than a repeater and are generally more sophisticated.

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G
LOSSARY
89
DNS Server Address
DNS stands for Domain Name System, which allows Internet host
computers to have a domain name (such as 3com.com) and one or more
IP addresses (such as 192.34.45.8). A DNS server keeps a database of
host computers and their respective domain names and IP addresses, so
that when a domain name is requested (as in typing “3com.com” into
your Internet browser), the user is sent to the proper IP address. The DNS
server address used by the computers on your home network is the
location of the DNS server your ISP has assigned.
Encryption
A method for providing a level of security to wireless data transmissions.
The OfficeConnect Wireless 11g Access Point uses two types of
encryption; WPA and WEP. WPA is a more powerful level of encryption
than WEP.
ESSID
Extended Service Set Identifier. The ESSID is a unique identifier for your
wireless network. You must have the same ESSID entered into the Access
Point and each of it's wireless clients.
Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital
Equipment Corporation. Ethernet networks use CSMA/CD to transmit
packets at a rate of 10 Mbps over a variety of cables.
Ethernet Address
See MAC address.
Fast Ethernet
An Ethernet system that is designed to operate at 100 Mbps.
Firewall
Electronic protection that prevents anyone outside of your network from
seeing your files or damaging your computers.
Full Duplex
A system that allows packets to be transmitted and received at the same
time and, in effect, doubles the potential throughput of a link.
Half Duplex
A system that allows packets to transmitted and received, but not at the
same time. Contrast with full duplex.
Hub
A device that regenerates LAN traffic so that the transmission distance of
that signal can be extended. Hubs are similar to repeaters, in that they
connect LANs of the same type; however they connect more LANs than a
repeater and are generally more sophisticated.