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802.11n WLAN ADSL2+ Router
network
A group of computers that are connected together, allowing
them to communicate with each other and share resources,
such as software, files, etc. A network can be small, such as a
LAN
, or very large, such as the
Internet
.
network mask
A network mask is a sequence of bits applied to an IP ad-
dress to select the network ID while ignoring the host ID. Bits
set to 1 mean “select this bit” while bits set to 0 mean “ignore
this bit.” For example, if the network mask 255.255.255.0
is applied to the IP address 100.10.50.1, the network ID is
100.10.50, and the host ID is 1. See
binary, IP address, sub-
net
.
NIC
Network Interface Card
An adapter card that plugs into your computer and provides
the physical interface to your network cabling. For Ethernet
NICs this is typically an RJ-45 connector. See
Ethernet, RJ-
45
.
packet
Data transmitted on a network consists of units called pack-
ets. Each packet contains a payload (the data), plus overhead
information such as where it came from (source address) and
where it should go (destination address).
ping
Packet Internet (or Inter-Network) Groper
A program used to verify whether the host associated with an
IP address is online. It can also be used to reveal the IP ad
-
dress for a given domain name.
port
A physical access point to a device such as a computer or
Router, through which data flows into and out of the device.
PPP
Point-to-Point Protocol
A protocol for serial data transmission that is used to carry IP
(and other protocol) data between your ISP and your com-
puter. The WAN interface on the Wireless ADSL2+ Router
uses two forms of PPP called PPPoA and PPPoE. See
PP-
PoA, PPPoE
.
PPPoA
Point-to-Point Protocol over ATM
One of the two types of PPP interfaces you can define for a
Virtual Circuit (VC), the other type being PPPoE. You can de
-
fine only one PPPoA interface per VC.
