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V
V.32terbo : AT&T's
proprietary protocol for 19200 bps asynchronous communications.
V.32bis : The ITU
standard for 14400 bps modulation.
V.34 : The ITU
standard for 28800 bps and 33600 bps modulation.
V.90 : The ITU
standard for 56K modulation.
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V.FC : Rockwell's
proprietary protocol for 28800 bps asynchronous communications.
V.flex : Lucent's
proprietary protocol for 56000 bps modulation. Merged with Rockwell's
K56Plus to create K56flex.
Value-added
services: In the context of the e-learning industry,
value-added services include custom training needs assessment and skill-gap
analysis, curriculum design and development, pre- and posttraining mentoring
and support, training effectiveness analysis, reporting and tracking tools,
advisor services and implementation consulting, hosting and management of
Internet- or intranet-based learning systems, integration of enterprise
training delivery systems, and other services.
VCACHE :
A 32-bit, protected-mode cache driver, which replaces the 16-bit,
real-mode SMARTDrive disk cache software.
VCOMM :In
Windows, a 32-bit protected-mode communications driver.
vector fonts :Fonts
rendered from a mathematical model, in which each character is defined as
a set of lines drawn between points. Vector fonts can be scaled to any
size or aspect ratio.
version table :
A file that contains a list of executable files, followed by the version
number of MS-DOS with which the applications were designed to run.
Vertical Blanking Interval (VBI) :The
time period in which a television signal is not visible on the screen
because of the vertical retrace (the repositioning to top of screen to
start a new scan). Data services can be transmitted using a portion of
this signal.
VFAT :32-Bit
File Access using protected-mode code to write to the disk. In Windows 98
the 32-bit virtual File Allocation Table (VFAT) file system is the primary
file system.
Video Electronic Standards Association (VESA) :
An industry standards organization focusing on IBM-compatible personal
computers.
Video Graphics Array (VGA) :
A display standard for personal computers.
Videoconferencing: Using video and audio signals to link
participants at different and remote locations.
virtual memory :
Memory that appears to an application to be larger and more uniform than
it is.
virtual private networking (VPN) :
A technology by which one can securely connect to a remote server by
tunneling through an intermediary network.
virtualization :
The act of managing a system resource so that more than one application
can use it at the same time.
Virtual:
Not concrete or physical. For instance, a completely virtual university does
not have actual buildings but instead holds classes over the Internet.
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Virtual:
An overused term that describes some item, service, or other element that
reflects or mimics a real version of that thing. Virtual reality, for
example, is a computer-generated approximation of a real setting and/or
series of events without true physical dimensions.
Virtual
classroom:
The online learning space where students and instructors interact.
Virtual
community:
See
online community.
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Virus: A destructive type of computer program that attempts to
disrupt the normal operation of a computer, rewrite or delete information
from storage devices, and in some cases, cause physical damage to the
computer.
Virus detection
program: A software program to detect, diagnose, and
destroy computer viruses.
VoD (video on demand):
See
CoD
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VoIP (voice
over IP):
Voice transmitted digitally using the Internet Protocol.
Avoids fees charged by telephone companies.
Vortal: Vertical portal; a portal that targets a niche audience.
VPN (virtual
private network):
A private network configured inside a public network. Offers the security of
private networks with the economies of scale and built-in management
capabilities of public networks.
VRML :
Virtual Reality Modeling Language. A language for coding three-dimensional
HTML applications.
visual designer:The
design-time object in an ActiveX designer. Through the visual designer,
users can customize objects for use in executable applications.
VxD :Virtual
device driver. The x represents the type of device-for example, a virtual
device driver for a display is a VDD and a virtual device driver for a
printer is a VPD.
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