User's Manual

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User’s Guide Glossary
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broadband A telecommunications technology that can send different types
of data over the same medium. DSL is a broadband technology.
broadcast To send data to all computers on a network.
channel The channel number determines which channel frequency is used
by the device to pass wireless traffic to wireless PCs. The channels
available depend on which country the wireless network is operating
in. Your ISP provides details of the channel(s) you should use.
DHCP Dynamic Host Configuration Protocol
DHCP automates address assignment and management. When
a computer connects to the LAN, DHCP assigns it an IP address
from a shared pool of IP addresses; after a specified time limit,
DHCP returns the address to the pool.
DHCP relay Dynamic Host Configuration Protocol relay
A DHCP relay is a computer that forwards DHCP data between
computers that request IP addresses and the DHCP server that
assigns the addresses. Each of the
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interfaces can be configured as a DHCP relay. See DHCP.
DHCP server Dynamic Host Configuration Protocol server
A DHCP server is a computer that is responsible for assigning IP
addresses to the computers on a LAN. See DHCP.
digital Of data, having a form based on discrete values expressed as
binary numbers (0's and 1's). The data component in DSL is a
digital signal. See also analog.
DNS Domain Name System
The DNS maps domain names into IP addresses. DNS
information is distributed hierarchically throughout the Internet
among computers called DNS servers. For example,
www.yahoo.com is the domain name associated with IP address
216.115.108.243. When you start to access a web site, a DNS
server looks up the requested domain name to find its
corresponding IP address. If the DNS server cannot find the IP
address, it communicates with higher-level DNS servers to
determine the IP address. See also domain name.
domain name A domain name is a user-friendly name used in place of its
associated IP address. Domain names must be unique; their
assignment is controlled by the Internet Corporation for Assigned
Names and Numbers (ICANN). Domain names are a key
element of URLs, which identify a specific file at a web site. See
also DNS.
download
To transfer data in the downstream direction, i.e., from the
Internet to the user.
DSL Digital Subscriber Line
A technology that allows both digital data and analog voice
signals to travel over existing copper telephone lines.
encryption keys See network keys