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vCal; vCalendar

vCalendar defines a transport and platform-independent format for exchanging calendar and scheduling information for use in PIMs/PDAs and group schedulers. vCalendar is specified by IETF.

vCard

vCard automates the exchange of personal information typically found on a traditional business card, for use in applications such as Internet mail, voice mail, Web browsers, phone applications, call centres, video conferencing, PIMs /PDAs, pagers, fax, office equipment, and smart cards. vCard is specified by IETF.

VGA

Video Graphics Array. Graphics standard introduced by IBM, having a resolution of 640 x 480 pixels.

VPN

Virtual Private Network. A private network that is configured within a public network. A VPN appear as private national or international network to the customer, but physically shares a backbone trunk with other customers. VPNs enjoy the security of a private network via access control and encryption, while taking advantage of the economies of scale and built-in management facilities of large public networks. Today, there is tremendous interest in VPNs over the Internet, especially due to the constant threat of hacker attacks.

WAP

Wireless Application Protocol is a specification for a set of communication protocols to standardise the way that wireless devices, such as cellular phones and radio transceivers, can be used for Internet access, including email, the World Wide Web, and newsgroups.

WAV

A Wave file is an audio file format, created by Microsoft, that has become a standard PC audio file format for everything from system and game sounds to CD-quality audio. A Wave file is identified by a file name extension of WAV (.wav).

WBXML

Wireless Binary Extensible Markup Language.

WIM

The Wireless Identity Module is a data module for electronic identity certificates. It can contain both trusted and client certificates, private keys and algorithms needed for WTLS handshaking, encryption, decryption, and signature generation. The WIM module can be placed on a SIM card, called a SWIM card.

WML

Wireless Markup Language. A markup language used for authoring services, fulfilling the same purpose as HyperText Markup Language (HTML) does on the World Wide Web

202 Terms and definitions