NS-WIR54GF
54M Wireless Router User Guide
- 79 -
Appendix D: Glossary
¾
2x to 3x eXtended Range
™
WLAN Transmission Technology -
The WLAN device with 2x
to 3x eXtended Range
™
WLAN transmission technology make its sensitivity up to 105 dB,
which gives users the ability to have robust, longer-range wireless connections. With this
range-enhancing technology, a 2x to 3x eXtended Range
™
based client and access point can
maintain a connection at as much as three times the transmission distance of traditional
802.11b and 802.11g products, for a coverage area that is up to nine times greater. A
traditional 802.11b and 802.11g product transmission distance is about 300m, a 2x to 3x
eXtended Range
™
based client and access point can maintain a connection transmission
distance may be up to 830m.
¾
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.
¾
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.
¾
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.
¾
DHCP
(
D
ynamic
H
ost
C
onfiguration
P
rotocol)
-
A protocol that automatically configure the
TCP/IP parameters for the all the PC(s) that are connected to a DHCP server.
¾
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.
¾
DNS
(
D
omain
N
ame
S
ystem)
–
An Internet Service that translates the names of websites into
IP addresses.
¾
Domain Name -
A descriptive name for an address or group of addresses on the Internet.
¾
DoS
(
D
enial
o
f
S
ervice)
-
A hacker attack designed to prevent your computer or network from
operating or communicating.
¾
DSL
(
D
igital
S
ubscriber
L
ine)
-
A technology that allows data to be sent or received over
existing traditional phone lines.
¾
ISP
(
I
nternet
S
ervice
P
rovider)
-
A company that provides access to the Internet.
¾
MTU
(
Maximum Transmission Unit
)
-
The size in bytes of the largest packet that can be
transmitted.
