U
UCE
Unsolicited Commercial Email. Informally and disparagingly referred to as
spam.
Undeliverables
Email returned to the sender when the person at the other end has closed
their account, has a full email box, or provided you with a faulty address.
Unique User
One user identity. When talking about the number of unique users a web site
receives over a specific time frame, this counts each user as one visitor, no
matter how many times he or she may return. This statistic is often used as a
measure of site popularity.
UNIX
A popular multi-user, multi-tasking operating system developed at Bell Labs in
the early 1970s. Due to its portability, flexibility, and power, UNIX has become
the leading operating system for Internet server workstations.
Uploading
The sending of files from your computer to a host server. Typically this is
done through an FTP program or an online upload form provided by your host.
Your website files must be uploaded in order to put your website on the Internet.
As an alternative, there are also web hosts and website platforms, such as
Wordpress, that offer online templates or forms to let you simply paste in the
information you want to display.
Upstream Provider
A larger, faster Internet provider that gives connectivity to local or smaller
ISPs.
URI
Uniform Resource Identifier. Same as URL.
URL
Uniform Resource Locator (sometimes referred to as Universal Resource
Locator). This is the address at which you can find a specific web site or file.
Usenet
A collection of newsgroups, and the system to index and access them.
User Agent
Any device capable of accessing the World Wide Web, such as a browser,
cellphone, screen reader, or other device or software.
User Session
A person visiting a web site over a short period of time. Usually, a user
session is considered ended if there is no activity from that user for 30 minutes
or so.
USP
Unique Selling Proposition. The reasons a consumer should use your products
rather than a competitor’s products.
UUENCODE
Short for UNIX to UNIX Encode(ing), this is a method for converting files from
binary format to ASCII format so they can be sent via email.
V
Virtual Server
A web server that shares computer resources among many clients (hosted
sites) on a single machine. Virtual web servers provide low-cost web hosting
services since dozens or even hundreds of small web sites can reside on one
computer.
Virus
Malicious computer code that infects a computer, often by replicating itself via
email, that might display messages, install other software or files, corrupt or
delete software or files, send confidential and private information to third parties,
record the keystrokes you type to retrieve passwords, bank account numbers
and other sensitive data. A virus can even give the virus creator remote access
to your computer. Viruses cause millions of dollars of damage and losses
each year.
VPN
Virtual Private Network. VPN usually refers to a network that is, in part,
connected via the Internet, but the data sent across the Internet is encrypted so
the network is "virtually" private.
W
Web Browser
A software program that allows your computer, once connected to the
Internet, to retrieve documents from web servers around the world, translate the
HTML code in the documents, and display the information on-screen.
Web Designer
A person who creates web sites. Web designers may use web-authoring
software, an HTML editor, or a simple text editor to create the actual pages, or
they may design the overall look and let a webmaster do the actual coding. Web
designers are usually proficient with web graphics and images.
Web Developer
The person who develops the interface between the front and back end of a
web site. Although web developers may be web designers as well, they typically
have more database, CGI, and computer engineering experience.
Webmaster
A very broad term generally meaning anyone who builds web sites. The scope
of webmaster duties varies greatly. For a small company, the webmaster may
design and build the site, market it, and handle all Internet-related activity. For a
large company, it could have as little meaning as the person who answers email
inquiries.
Webmaster Service Provider
A company in the business of providing webmaster services to clients on a
contract basis.
Web Page
Any one particular page that is accessed via the World Wide Web. Web pages
comprise a web site, and are distinct from other pages by their URLs (web
addresses).
Web Server
A computer on the World Wide Web (connected to the Internet backbone)
that stores HTML documents that can be retrieved via a web browser or other
user agent.
An Internet backbone is a larger transmission line that carries data gathered
from smaller lines, such as a local phone line or cable that interconnects with it.
Typically only web hosting companies and a few large corporations are directly
connected to a backbone because of the high cost.
Web Site
A location on the World Wide Web. Each web site contains a home page,
which is the first document or page users see when they enter the site. The site
may contain any number of additional documents.
Wi-Fi
Wireless Fidelity. Wi-Fi refers to a form of wireless communication, essentially
meaning "Wireless Ethernet."
Worm
A worm is similar to a virus, but it doesn't infect other programs. Like a virus,
it makes copies of itself to infect other computers, and may alter, install, or
destroy files and software programs.
www (World Wide Web)
Also known as simply the web, this is the graphical, fastest-growing part of
the Internet. It is sometimes disparagingly referred to as the World Wide Wait
because of slow Internet connections, slow servers, or slow web sites.
X
XML
eXtensible Markup Language. XML, a widely used system for defining data
formats, provides an efficient way to define complex documents and data
structures such as catalogs, news feeds,glossaries, inventories, real estate, etc.
XUL
eXtensible User-interface Language. XUL is a markup language based on XML,
and is used to define what the user interface will look like for software.
Z
Zip File
A compressed file format. A zip file may contain one or more files, which are
compressed to save space or allow for faster transmission to others.
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