User's Manual Part 2

45
A D S L M o d e m
M a n u a l
◈ B Glossary
1 0 0 B A S E - T
A des ignation for the type of wiring used by Ethernet networks with a data rate of 100 Mbps.
Also known as C ategory 5 (C AT 5) wiring. See also data rate, Ethernet .
A D S L
Asymmetric Digital Subsc riber Line
The most commonly deployed "flavor" of DSL for home users. The term asymmetrical refers to
its unequal data rates for downloading and uploading (the download rate is higher than the
upload rate). The asymmetrical rates benefit home users because they typically download
much more data from the Internet than they upload.
A T M ( A s y n c h r o n o u s T r a n s f e r M o d e )
Asynchronous Transfer Mode
A standard for high- speed transmission of data, text, voice, and video, widely used within the
Internet. ATM data rates range from 45 Mbps to 2.5 Gbps. See also data rate .
B r i d g i n g
Passing data from your network to your ISP and vice versa using the hardware addresses of
the devices at each location. Bridging contrasts with routing, which can add more
intelligence to data transfers by using network addresses instead. T he [ Productname] can
perform both routing and bridging. T ypically, when both functions are enabled, the device
routes IP data and bridges all other types of data. See also routing .
D N S ( D o m a i n N a m e S y s t e m )
The DNS maps domain names into IP addresses. DNS information is distributed hierarc hically
throughout the Internet among computers called DNS servers. When you start to acc ess 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 c ommunicates with higher- level DNS servers to
determine the IP address. See also domain name.