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Computers and Internet Terminology I
Internet terms 1
20
Computer Science
5th Grade
10/05/2013

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Term
Internet
Definition

The Internet connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols - Example HTML.

Term
World Wide Web
Definition
The World Wide Web, or simply Web, is a way of accessing information over the medium of the Internet. It is an information-sharing model that is built on top of the Internet. The Web utilizes browsers, such as Internet Explorer or Firefox, to access Web documents called Web pages.  The Web is just one of the ways that information can be exchanged over the Internet, email being another.
Term

Internet Service Provider 

(ISP)

Definition
A company that provides access to the internet.  For a monthly fee users can browse webites, send emails, and other services.
Term

HTTP

HyperText Transfer Protocol

Definition
This is the language of the web. 
Term

HTML

HyperText Markup Language

Definition
Programmable language used to create web pages.  A web browser is needed to interpret HTML in order to display web pages
Term
Web Browser
Definition

A browser is a free software package that lets you view web pages, graphics, and most online content.  Browser software is specifically designed to convert HTML into readable documents.  The most popular web browsers in 2013 are: Google Chrome, Firefox, Internet Explorer, and Safari.

Term
Website
Definition
A site (location) on the World Wide Web. Each Web site contains a home page, which is the first document users see when they enter the site. The site might also contain additional documents and files. Each site is owned and managed by an individual, company or organization
Term

URL

Uniform Resource Locators

Definition
A URL is essentially a character string such as www.yahoo.com that references internet pages and files.  Used by the DNS servers to retrieve internet addresses.
Term
IP Address
Definition
Your computer's 'internet protocol' address is a four-part or eight-part electronic serial number. An IP address can look something like '202.3.104.55' or like '21DA:D3:0:2F3B:2AA:FF:FE28:9C5A', complete with dot or colon separators. Every computer, cell phone, and device that accesses the Internet is assigned at least one IP address for tracking purposes. Wherever you browse, whenever you send an email or instant message, and whenever you download a file, your IP address acts like a type of automobile licence plate to enforce accountability and traceability.
Term
DNS Server
Definition
Acts kind of like a phone book - takes the domain name such as google.com and translates to IP address so that your website request can be completed
Term
Malware
Definition

Malware is the broad term to describe any malicious software designed by hackers. Malware includes: viruses, trojans, ratware, keyloggers, zombie programs, and any other software that seeks to do one of four things:

  1. vandalize your computer in some way
  2. steal your private information
  3. take remote control of your computer ('zombie' your computer) for other ends
  4. manipulate you into purchasing something
Term
Router
Definition
A router is a device in computer networking that forwards data packets to their destinations, based on their addresses.  Includes both wired and wireless.  
Term
Apps and Applets
Definition
Apps and applets are small software applications. They are designed to be much smaller than regular computer software, but still provide very useful functions. Lately, apps are very popular with cellphone and mobile platforms; specifically: with the Apple iPhone and the Google Android phone.
Term
Encription
Definition
Encryption is the mathematical scrambling of data so that it is hidden from eavesdroppers(spies!).  Encryption uses complex math formulas ('ciphers') to turn private data into meaningless gobbledygook that only trusted readers can unscramble.  Encryption is the basis for how we use the public Internet as a pipeline to conduct trusted business, like online banking and online credit card purchasing.  On the provision that reliable encryption is in place, your banking information and credit card numbers are kept private.
Term
Firewall
Definition

Firewall is a generic term to describe 'a barrier against destruction'.  It comes from the building term of a protective wall to prevent the spreading of housefires or engine compartment fires.  In the case of computing, 'firewall' means to have software and/or hardware protecting you from hackers and viruses.

Computing firewalls range from small antivirus software packages, to very complex and expensive software + hardware solutions. All the many kinds of computer firewalls offer some kind of safeguard against hackers vandalizing or taking over your computer system.

Term
Cookie
Definition
A cookie is information that a Web site puts on your hard disk so that it can remember something about you at a later time.   While cookies serve many functions, their most common purpose is to store login information for a specific site. Some sites will save both your username and password in a cookie, while others will only save your username.  Cookies are also used to store user preferences for a specific site. 
Term
Streaming
Definition
Data streaming, commonly seen in the forms of audio and video streaming, is when a multimedia file can be played back without being completely downloaded first. Most files, like shareware and software updates that you download off the Internet, are not streaming data. However, certain audio and video files like Real Audio and QuickTime documents can be streaming files, meaning you can watch a video or listen to a sound file while it's being downloaded to your computer. With a fast Internet connection, you can actually stream live audio or video to your computer.
Term
Multimedia
Definition
As the name implies, multimedia is the integration of multiple forms of media. This includes text, graphics, audio, video, etc. For example, a presentation involving audio and video clips would be considered a "multimedia presentation." Educational software that involves animations, sound, and text is called "multimedia software." CDs and DVDs are often considered to be "multimedia formats" since they can store a lot of data and most forms of multimedia require a lot of disk space.
Term
Domain Name
Definition

A domain name is a unique name that identifies a website. For example, the Domain Name of Google is "google.com". Each website has a domain name that serves as an address, which is used to access the website.

Whenever you visit a website, the domain name appears in the address bar of the web browser. All domain names have a domain suffix, such as .com, .net, or .org. The domain suffix helps identify the type of website the domain name represents. For example, ".com" domain names are typically used by commercial website, while ".org" websites are often used by non-profit organizations. 

Term
Plug-In
Definition

An application built into a browser or added to a browser to enable it to interact with a special file type (such as a movie, sound file, Word document, etc.).  Browsers typically have plug-ins such as Java and Flash installed

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