Planet Technology ADSL Firewall Router ADE-4120 - Manual (Page 44)

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every device on your network. DHCP software typically runs in servers and is also found in
network devices such as Routers.
DMT
Discrete Multi-Tone frequency signal modulation
Downstream rate
The line rate for return messages or data transfers from the network machine to the user's
premises machine.
DSLAM
Digital Subscriber Line Access Multiplex
Dynamic IP Addresses
A dynamic IP address is an IP address that is automatically assigned to a client station
(computer, printer, etc.) in a TCP/IP network. Dynamic IP addresses are typically assigned
by a DHCP server, which can be a computer on the network or another piece of hardware,
such as the Router. A dynamic IP address may change every time your computer connects
to the network.
Encapsulation
The technique used by layered protocols in which a layer adds header information to the
protocol data unit (PDU) from the layer above. As an example, in Internet terminology, a
packet would contain a header from the physical layer, followed by a header from the
network layer (IP), followed by a header from the transport layer (TCP), followed by the
application protocol data.
Ethernet
One of the most common local area network (LAN) wiring schemes, Ethernet has a
transmission rate of 10 Mbps.
FTP
File Transfer Protocol. The Internet protocol (and program) used to transfer files between
hosts.
Hop count
A measure of distance between two points on the Internet. It is equivalent to the number of
gateways that separate the source and destination.
HTML
Hypertext Markup Language - The page-coding language for the World Wide Web.
HTML browser
A browser used to traverse the Internet, such as Netscape or Microsoft Internet Explorer.
http
Hypertext Transfer Protocol - The protocol used to carry world-wide-web (www) traffic
between a www browser computer and the www server being accessed.
ICMP
Internet Control Message Protocol - The protocol used to handle errors and control
messages at the IP layer. ICMP is actually part of the IP protocol.