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C
Client
In a client/server architecture, a client is a computer that requests files or services such as file transfer,
remote login, or printing from the server. On an IEEE 802.11b/g wireless LAN, a client is any host that
can communicate with the wireless access point. Also called a CPE. A wireless client is also called a
.station.. Also see server.
Coaxial Cable
A type of cable consisting of a center wire surrounded by insulation and a grounded shield of braided
wire. The shield minimizes electrical and radio frequency interference. Coaxial cable has high bandwidth
and can support transmission over long distances.
CPE
Customer Premise Equipment: typically computers, printers, etc, that are connected to the gateway at the
subscriber location. CPE can be provided by the subscriber or the cable service provider. Also called a
client.
Crossover Cable
A crossover cable is a cable that is used to interconnect two computers by "crossing over" (reversing)
their respective pin contacts. A crossover cable is sometimes known as a null modem.
D
Default Gateway
A routing device that forwards traffic not destined to a station within the local subnet.
DHCP
A Dynamic Host Configuration Protocol server dynamically assigns IP addresses to client hosts on an IP
network. DHCP eliminates the need to manually assign static IP addresses by “leasing” an IP address
and subnet mask to each client. It enables the automatic reuse of unused IP addresses.
DMZ
DeMilitarized Zone. This service opens one IP address to the Internet, usually for online gaming, and acts
as a buffer between the Internet and your network.
DNS
The Domain Name System is the Internet system for converting domain names (like
www.onqlegrand.com) to IP addresses. A DNS server contains a table matching domain names such as
Internetname.com to IP addresses such as 192.169.9.1. When you access the world-wide web, a DNS
server translates the URL displayed on the browser to the destination website IP address. The DNS
lookup table is a distributed Internet database; no one DNS server lists all domain name to IP address
matches.
Domain Name
A unique name, such as onqhome.com, that maps to an IP address. Domain names are typically much
easier to remember than are IP addresses. See DNS.
Download
To copy a file from one computer to another. You can use the Internet to download files from a server to a
computer.