Wireless Access Point
HNW150AP
User Manual
168
computers that request IP addresses and the DHCP server that
assigns the addresses. Each of the Wireless Gateway's 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
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
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
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
Ethernet
The most commonly installed computer network technology, usually
using twisted pair wiring. Ethernet data rates are 10 Mbps and 100
Mbps.
See also 10BASE-T, 100BASE-T, twisted pair
.
FTP
File Transfer Protocol
A program used to transfer files between computers connected to the
Internet. Common uses include uploading new or updated files to a
web server, and downloading files from a web server.
Gbps
Abbreviation of Gigabits per second, or one billion bits per second.
Internet data rates are often expressed in Gbps.
host
A device (usually a computer) connected to a network.
HTTP
Hyper-Text Transfer Protocol
HTTP is the main protocol used to transfer data from web sites so that
it can be displayed by web browsers. See
web browser, web site
.
Hub
A hub is a place of convergence where data arrives from one or more
directions and is forwarded out in one or more directions. It connects
an Ethernet bridge/router to a group of PCs on a LAN and allows
communication to pass between the networked devices.
ICMP
Internet Control Message Protocol
An Internet protocol used to report errors and other network-related
information. The ping command makes use of ICMP.
IEEE
The Institute of Electrical and Electronics Engineers is a technical
professional society that fosters the development of standards that
often become national and international standards.
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