BT Micro Owner’s Manual
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that identifies the particular network the host belongs to, and
a host ID uniquely identifying the host itself on that network.
A network mask is used to define the network ID and the
host ID. Because IP addresses are difficult to remember,
they usually have an associated domain name that can be
specified instead. See domain name, network mask.
ISP Internet Service Provider
A company that provides Internet access to its customers,
usually for a fee.
LAN Local Area Network
A network limited to a small geographic area, such as a
home or small office.
LED Light Emitting Diode
An electronic light-emitting device. The indicator lights on the
front of the system are LEDs.
MAC address Media Access Control address
The permanent hardware address of a system, assigned by
its manufacturer. MAC addresses are expressed as six pairs
of hex characters, with each pair separated by colons. For
example; NN:NN:NN:NN:NN:NN.
mask See network mask.
Mbps Abbreviation for Megabits per second, or one million bits per
second. Network data rates are often expressed in Mbps.
NAT Network Address Translation
A service performed by many routers that translates your
network’s publicly known IP address into a private IP address
for each computer on your LAN. Only your router and your
LAN know these addresses; the outside world sees only the
public IP address when talking to a computer on your LAN.
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 keys (Also known as encryption keys.) 64-bit and 128-bit encryption
keys used in WEP wireless security schemes. The keys encrypt
data over the WLAN, and only wireless PCs configured with
WEP keys that correspond to the keys configured on the BT
Micro can send/receive encrypted data.
network mask A network mask is a sequence of bits applied to an IP
address 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, subnet.
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 units called packets.
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).
pass phrase A secret password used in WPA wireless data encryption.
Encryption is based on a WPA master key that is derived from
the pass phrase and the network name (SSID) of the BT Micro.
The pass phrase should be at least 20 characters long in order
to deter a hacker attempting to crack the pass phrase by
recording a series of frames then trying commonly used
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