Wi-Fi
or short for "wireless fidelity" is the term for a high-frequency
wireless local area network (WLAN).
Wi-Fi
technology is gaining acceptance as an alternative to a wired LAN.
The 802.11b Wi-Fi technology operates in the 2.4 GHz range offering
data speeds up to 11 megabits per second. Modulation used in 802.11
has historically been phase-shift keying (PSK). The modulation method
selected for 802.11b is known as complementary code keying or CCK,
which makes possible high data speed and is less susceptible to
multipath-propagation interference.
According to
a recent IDC study, the overall WLAN market is projected to grow
from 8.1 million units in year 2001 to over 36 million units by
the year 2006. Forecast for wireless connectivity regular users
in 2002 is expected to be approximately 2 million and predicted
to grow to 20 million by 2006 in the USA alone. Shipment of wireless
enabled laptop computers is also expected to grow to 15+ million
in 2005, compared to 2.9 million in 2001. Wi fi or wireless fidelity
is a technology boon. The Wi-Fi Alliance provides a list of hot
spots through its Wi-Fi Zone program.
Wireless LAN (WLAN) is a network which allows access to NUNet and
the Internet without the need for any wired connections to the user's
machine. With a wireless LAN , you can use wireless for e-mailing,
web browsing, home Directory access and printing to local network
printers.
A wireless connection
works like a wired Ethernet connection. Wireless access may be up
to 11 megabits per second. Since the wireless lan network bandwidth
is shared among all users connected via wireless in a given area,
the network speeds may be noticeably slower when too many people
are using wireless, and generally may not be as fast as wired Ethernet.
WML is what
HTML is to a web-browser. WMl is based on XML and is a XML application.
WML is read by a browser built into the WAP
device. In WAP devices the browser is commonly known as a micro
browser.
WMLScript
WMLScript is
the client side script-language based on ECMAScript. It seems very
much like Java Script and in general way it is meant for the same
kind of application that actually runs simple code on the client
side rather than just render displays. WMLScript has been improved
upon to fit the limitations of the WAP environment.
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