GSM:
Global
System for Mobile communication technology having 80% mobile phone use
Telecommunications Standards Institute (t! digital cellular networks for mobile
phones. GSM MHz to 1800 MHz based on Time Division Multiple Access (TDMA)
Subscriber Identification Module (SIM)-a tiny chip that give
inwards
Institute (ETSI) to describe protocols for second
SM)
is world's most widely used cell phone
nard
developed by the European cols for second generation (2G)
Frequency
ranges from 900
e
Access (TDMA) technology. GSM users require lp that gives a cellular device its
unique phone
number.
CDMA:
phone
technology to GSM, CDMA
Code
Division Multiple Access (CDMA) is an alternative cell phone technology 10 uses
a "broad
d
broad-spectrum" electromagnetic waves for signaling with wider bandwidth.
This allows multiple people on multiple cell phones over the same channel to
share a band frequencies. In CDMA technology, data and voice packets are
separated using codes on transmitted using a wide frequency range.
3G:
3G
is the third generation of Wireless & Mobile technologies. It comes with
enhancements over previous wireless technologies, like high-speed transmission,
advanced multimedia access and global roaming. 3G is mostly used with mobile
phones and handsets as a means to connect the phone to the Internet or other IP
networks in order to make voice and video calls, to download and upload data
and to surf the net.
4G:
4G is fourth-generation of wireless service,
which refers to the next wave of high-speed mobile technologies that will be
used to replace current 3G networks. The 4G wireless network is next step of
3G, available in limited countries and areas. The 4G is convergence of wired
and wireless networks, wireless technologies including GSM, WLAN and Bluetooth
as well as computers, communication devices and others. It is also called
MAGIC, which stands for Mobile-Multimedia, Any-where, Global Mobility solutions
over Integrated wireless and Customized services. It is Ipbased integrated
system capable to provide 100Mbps speed offering IP telephony, Broadband
Internet
Access, HDTV streamed multimedia access etc.
* WLL (Wireless
Local Loop)
In
traditional telephone networks, phone would be connected to the nearest
exchange through a pair of copper wires. Wireless local loop (WLL) technology
simply means that the subscriber is connected to the nearest telephone exchange
through a radio link instead of copper wires. WLL is more reliable and enhanced
technology and offers high quality data transmission, signaling
services
and better bandwidth than traditional telephone system.
Wi-Fi
(Wireless Fidelity)
Wi-Fi
is a very common wireless technology that was developed in the 1990s. It is
used to connect machines in a Local Area Network (LAN). SO, Wi-Fi is like a
wireless version of Ethernet. Wi-Fi allows 54 Mbps speed up to 300 feet.
Network
Security: In the modern age of networked information system, computers are not
only capable of storing and processing data, but also delivering it on the
globe. But, this increase connectivity of information’s brought some risk of
privacy, theft and misuse of information. Information and Network security
commonly refers the protection of data and network from various threats. It
covers the following
Confidentiality:
Protection against unauthorized access. Integrity: Protected against
unauthorized modification. Authentication: Identification of authorized user.
WLL (Wireless Local Loop) || Wireless Fidelity in hindi
What is 4GL in hindi ||
WLL (Wireless Local Loop) || Wireless Fidelity in hindi
What is 4GL in hindi ||
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