Glossary - Ubee DVW3201B Subscriber User Manual

10

Glossary

This chapter defines terms used in this guide and in the industry.
Broadcast
A packet sent to all devices on a network.
Cable Modem Termination System (CMTS)
Typically located in the cable company's headend, the CMTS is equipment that provides
high-speed data services to subscribers, such as cable Internet and VoIP.
Channel Bonding
A computer networking configuration where two or more network interfaces are combined
on a host computer for redundancy or increased throughput. Data is transmitted over
these channels as if they are one channel.
Customer Premises Equipment (CPE)
Equipment such as telephones, routers, and modems located at a subscribers location to
enable customers access to communication services.
Default Gateway
The routing device used to forward all traffic that is not addressed to a computer on the
local subnet.
Demilitarized Zone (DMZ)
Allows one IP address (or computer) to be placed in between the firewall and the Internet
(usually for gaming and video conferencing). This allows risky, open access to the
Internet.
Domain
A subnetwork comprised of a group of clients and servers under the control of one
security database.
Domain Name
A descriptive name for an address or group of addresses on the Internet. Domain names
are in the form of a registered entity name plus one of a number of predefined top-level
suffixes, such as .com, .edu, .org.
Domain Name System (DNS)
An Internet service that locates and translates domain names into IP addresses. Because
domain names are alphabetic, they are easier to remember. However, the Internet is
based on IP addresses. Every time you use a domain name, a DNS service translates the
name into the corresponding IP address. The DNS system is actually its own network. If
one DNS server does not know how to translate a particular domain name, it asks another
one, and so on, until the correct IP address is returned.
Ubee DDW3612 Wireless Cable Modem Gateway Subscriber User Guide • July 2012 87