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868 | Acronymsand Terms DellPowerConnectW-SeriesArubaOS6.2 | User Guide
Term Definition
spectrum of frequency bands with very low power for a short distance. Ultra
wideband broadcasts very precisely timed digital pulses on a carrier signal across
a very wide spectrum (number of frequency channels) at the same time. UWB can
carry a huge amount of data over a distance up to 230 feet at very low power (less
than 0.5 milliwatts), and has the ability to carry signals through doors and other
obstacles that tend to reflect signals at more limited bandwidths and a higher
power.
virtual private network (VPN) A network that uses a public telecommunication infrastructure, such as the
Internet, to provide remote offices or individual users with secure access to their
organization's network. A VPN ensures privacy through security procedures and
tunneling protocols such as the Layer Two Tunneling Protocol ( L2TP ). Data is
encrypted at the sending end and decrypted at the receiving end.
voice over WLAN (VoWLAN) A method of routing telephone calls for mobile users over the Internet using the
technology specified in IEEE 802.11b. Routing mobile calls over the Internet makes
them free, or at least much less expensive than they would be otherwise.
wideband code-division multiple
access (W-CDMA)
Officially known as IMT-2000 direct spread; ITU standard derived from Code-
Division Multiple Access (CDMA). W-CDMA is a third-generation (3G) mobile
wireless technology that promises much higher data speeds to mobile and
portable wireless devices than commonly offered in today's market.
Wi-Fi A term for certain types of WLANs. Wi-Fi can apply to products that use any 802.11
standard. Wi-Fi has gained acceptance in many businesses, agencies, schools,
and homes as an alternative to a wired LAN. Many airports, hotels, and fast-food
facilities offer public access to Wi-Fi networks.
WiMAX A wireless industry coalition whose members organized to advance IEEE 802.16
standards for broadband wireless access (BWA) networks. WiMAX 802.16
technology is expected to enable multimedia applications with wireless
connection and, with a range of up to 30 miles, enable networks to have a wireless
last mile solution. According to the WiMAX forum, the group's aim is to promote
and certify compatibility and interoperability of devices based on the 802.16
specification, and to develop such devices for the marketplace.
wired equivalent privacy (WEP) A security protocol specified in 802.11b, designed to provide a WLAN with a level
of security and privacy comparable to what is usually expected of a wired LAN.
Data encryption protects the vulnerable wireless link between clients and access
points; once this measure has been taken, other typical LAN security mechanisms
such as password protection, end-to-end encryption, virtual private networks
(VPNs), and authentication can be put in place to ensure privacy.
wireless Describes telecommunications in which electromagnetic waves (rather than some
form of wire) carry the signal over part or all of the communication path.
wireless abstract XML (WAX) Describes telecommunications in which electromagnetic waves (rather than some
form of wire) carry the signal over part or all of the communication path.
wireless application service
provider (WASP)
Provides Web-based access to applications and services that would otherwise
have to be stored locally and makes it possible for customers to access the service
from a variety of wireless devices, such as a smartphone or personal digital
assistant (PDA).
wireless ISP (WISP) An internet service provider (ISP) that allows subscribers to connect to a server at
designated hot spots (access points) using a wireless connection such as Wi-Fi.
This type of ISP offers broadband service and allows subscriber computers, called