User's Manual

Appendix B: Glossary
•
802.11ac
- IEEE 802.11ac is a wireless computer networking standard of 802.11.This specification will enable multi-
station WLAN throughput of at least 1 gigabit per second .This is accomplished by extending the air interface
concepts embraced by 802.11n: wider RF bandwidth, more MIMO spatial streams, multi-user MIMO, and high-
density modulation (up to 256 QAM).
•
802.11n -
802.11n builds upon previous 802.11 standards by adding MIMO (multiple-input multiple-output). MIMO
uses multiple transmitter and receiver antennas to allow for increased data throughput via spatial multiplexing
and increased range by exploiting the spatial diversity, perhaps through coding schemes like Alamouti coding. The
Enhanced Wireless Consortium (EWC) [3] was formed to help accelerate the IEEE 802.11n development process
and promote a technology specification for interoperability of next-generation wireless local area networking
(WLAN) products.
•
802.11b -
The 802.11b standard specifies a wireless networking at 11 Mbps using direct-sequence spread-spectrum
(DSSS) technology and operating in the unlicensed radio spectrum at 2.4GHz, and WEP encryption for security.
802.11b networks are also referred to as Wi-Fi networks.
•
802.11g -
specification for wireless networking at 54 Mbps using direct-sequence spread-spectrum (DSSS)
technology, using OFDM modulation and operating in the unlicensed radio spectrum at 2.4GHz, and backward
compatibility with IEEE 802.11b devices, and WEP encryption for security.
•
DDNS
(
D
ynamic
D
omain
N
ame
S
ystem)
-
The capability of assigning a fixed host and domain name to a dynamic
Internet IP Address.
•
DHCP
(
D
ynamic
H
ost
C
onfiguration
P
rotocol)
-
A protocol that automatically configure the TCP/IP parameters for
the all the computer(s) that are connected to a DHCP server.
•
DMZ
(
D
e
m
ilitarized
Z
one)
-
A Demilitarized Zone allows one local host to be exposed to the Internet for a special-
purpose service such as Internet gaming or videoconferencing.
•
DNS
(
D
omain
N
ame
S
ystem)
-
An Internet Service that translates the names of websites into IP addresses.
•
Domain Name -
A descriptive name for an address or group of addresses on the Internet.
•
DSL
(
D
igital
S
ubscriber
L
ine)
-
A technology that allows data to be sent or received over existing traditional phone
lines.
•
ISP
(
I
nternet
S
ervice
P
rovider)
-
A company that provides access to the Internet.
•
MTU
(
Maximum Transmission Unit
)
-
The size in bytes of the largest packet that can be transmitted.
•
NAT
(
N
etwork
A
ddress
T
ranslation)
-
NAT technology translates IP addresses of a local area network to a different
IP address for the Internet.
•
PPPoE
(
P
oint to
P
oint
P
rotocol
o
ver
E
thernet)
-
PPPoE is a protocol for connecting remote hosts to the Internet over
an always-on connection by simulating a dial-up connection.
•
SSID -
A
S
ervice
S
et
Id
entification is a thirty-two character (maximum) alphanumeric key identifying a wireless local
area network. For the wireless devices in a network to communicate with each other, all devices must be
configured with the same SSID. This is typically the configuration parameter for a wireless computer card. It
corresponds to the ESSID in the wireless Access Point and to the wireless network name.
•
WEP
(
W
ired
E
quivalent
P
rivacy)
-
A data privacy mechanism based on a 64-bit or 128-bit or 152-bit shared key
algorithm, as described in the IEEE 802.11 standard.
Appendix B: Glossary 73