WI-FI
Wi-Fi means Wireless Fidelity used to access Internet services in a Wi-Fi zone. Wi-Fi is also called as WLAN or Wireless Local Area Network.It stands for Wireless Fidelity. Wi-Fi networks use radio technologies provide wireless connectivity in local area networks. A Wi-Fi network can be used to connect computers to each other, to the Internet, and to wired networks using IEEE 802.3 or Ethernet.
Wi-Fi networks operate in the unlicensed 2.4 and 5 GHz radio bands. Wireless LANs are not sufficiently protected. It is vulnerable to virus attacks and information privacy invasion.
Security technologies are developed to enhance the WLAN security, including, Wired Equivalent Privacy (WEP), Wireless Application Protocol (mainly for mobile devices) plus many vendor proprietary technologies.
PUSH MAIL
Push mail is a feature in the phone by means of which an email received on the computer gets delivered to the phone also without "pulling" (dialing out to fetch mail) activity. Prerequisites for Push Mail A Java / Symbian / Windows phone with push mail client (a software application loaded on the phone) GPRS/ Blackberry/any other type of push mail subscription. The service is called "mail rendering". It means that any word/excel/ppt/acrobat files first few lines are sent as "text" with mail.
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