Internet Terminology


Internet Service Providers are companies like RCN, Service Electric, and Verizon that provide access to the Internet for your computer. The service provider charges you a fee in return for a software package, username and password that allows you to connect to the Internet. Verizon will enable you to connect with DSL over your current phone line with a modem.
Internet Service Providers




page
On the World Wide Web, a page is a file notated with the Hypertext Markup Language (HTML). Usually, it contains text and specifications about where image or other multimedia files are to be placed when the page is displayed. You can think of a Web site as a book that arrives a page at a time as you request each one. Each page is an individual HTML file with its own Web address (Uniform Resource Locator). The first page you usually request at a site is known as the home page.

packet
the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network. When any file (e-mail message, HTML file, Graphics Interchange Format file, Uniform Resource Locator request, and so forth) is sent from one place to another on the Internet, the Transmission Control Protocol (TCP) layer of TCP/IP divides the file into "chunks" of an efficient size for routing. Each of these packets is separately numbered and includes the Internet address of the destination. The individual packets for a given file may travel different routes through the Internet. When they have all arrived, they are reassembled into the original file (by the TCP layer at the receiving end).

PC optimization
optimization is the process of modifying a system to make some aspect of it work more efficiently or use fewer resources.

PHP *
is a script language and interpreter, similar to JavaScript and Microsoft's VBScript, that is freely available and used primarily on Linux Web servers. PHP (the initials come from the earliest version of the program, which was called "Personal Home Page Tools") is a cross-platform alternative to Microsoft's Active Server Page (ASP) technology (which runs only on Microsoft's Windows NT/2000 servers). As with ASP, the PHP script is embedded within a Web page along with its HTML. Before the page is sent to a user that has requested it, the Web server calls PHP to interpret and perform the operations called for in the PHP script. An HTML page that includes a PHP script is typically given a file name suffix of ".php" ".php3," or ".phtml". Like ASP, PHP can be thought of as "dynamic HTML pages," since content will vary based on the results of interpreting the script.



phishing
is the process of sending an e-mail to a user falsely claiming to be an established legitimate entity in an attempt to trick the user into surrendering private information that will be used for identity theft. The e-mail usually directs the user to visit a website where they are prompted to update personal information, such as passwords, credit card, social security, and bank account numbers. This website is established for the sole purpose of stealing the userís information.

PII
is short for personally identifiable information which consists of any information that can identify an individual. This type of information may be requested from users through online forms and can include your mailing address, credit card number, your IP address, phone number, e-mail address, Social Security number or any other unique identifier. Everyone should be cautious about the personally identifiable information you provide on the Internet in order to reduce the risk of identity theft.

ppi - pixels per inch
is a measure of the sharpness (that is, the density of illuminated points) on a display screen. The dot pitch determines the absolute limit of the possible pixels per inch. However, the displayed resolution of pixel (picture elements) that is set up for the display is usually not as fine as the dot pitch. The pixels per inch for a given picture resolution will differ based on the overall screen size since the same number of pixels are being spread out over a different space. The term "dots per inch (dots per inch)," extended from the print medium, is sometimes used instead of pixels per inch.

proxy cache *
a copy of a web site that resides on a company's intermediate server. Page views are not received by the actual web site, but by the cached version on the server.




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