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ADSL Modem Router Page 43
Appendix C: Glossary
10Base-T / 100Base-T
The adaptation of the Ethernet standard for
Local Area Networks (LANs). 10Base-T uses
a twisted pair cable with maximum lengths of
100 meters and transmits data at 10Mbps
maximum. 100Base-T is similar, but uses two
different twisted pair configurations and
transmits at 100Mbps maximum.
Ad-hoc Network
Also known as the peer-to-peer network, an
ad-hoc network allows all computers
participating in a wireless network to
communicate each other without an
AccessPoint.
Adapter
A device that makes the connection to a
network segment, such as Ethernet and
modem cards.
ADSL
Asymmetric Digital Subscriber Line (ADSL),
as its name indicates, is an asymmetrical data
transmission technology with higher traffic
rate downstream and lower traffic rate
upstream. ADSL technology satisfies the
bandwidth requirements of applications which
demand “asymmetric” traffic, such as web
surfing, file downloads, and telecommuting.
ATM
Asynchronous Transfer Mode is a network
technology supports real time voice, video,
and data transmission. The topology uses
switches that establish a logical circuit from
end to end, which guarantees quality of
service (QoS). ATM works by transmitting all
traffic as fixed-length, 53-byte cells. This fixed
unit allows very fast switches to be built
ATM is widely used as a backbone
technology in carrier networks and large
enterprises. ATM is highly scalable and
supports transmission speeds of 1.5, 25, 100,
155, 622, 2488 and 9953 Mbps. ATM is also
running as slow as 9.6 Kbps between ships at
sea.
Bandwidth
The amount of data that can be transmitted in
a fixed amount of time.
Browser
A software application used to locate and
display Web pages. Examples include
Netscape Navigator and Microsoft Internet
Explorer.
BSS
BSS is the acronym of Basic Service Set that
is consisted a wireless access point and a
group of wireless client computers.
Communications Protocols
Communication between devices requires they
agree on the format in which the data is to be
transmitted, sent and received. The
communications protocols are a set of rules
that define the data format.
DHCP
DHCP, short for Dynamic Host Configuration
Protocol, is a protocol for assigning dynamic
IP Addresses to devices on a network.
Dynamic Addressing means that a device can
have a different IP Address each time it
connects to the network.
Domain Name
A name that identifies one or more IP
Addresses. For example, the domain name
microsoft.com represents about a dozen 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.
DNS
Short for Domain Name Server, translates
domain names into IP Addresses. To help us
recognize and remember domain names they
are alphabetic in form, however, the Internet
actually runs on numbered IP Addresses.
DNS servers translate domain names into their
respective IP Addresses.