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Navigating the Internet Alphabet Soup

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1 Navigating the Internet Alphabet Soup

2 What is the Internet? A global network that connects millions of computers all over the world. The Internet backbone is the central network that links all the parts of the Internet together.

3 How do we get access to the InTERNET?
ISP: Internet Service Providers sell Internet access to customers NSP: Network Service Providers supply direct backbone access to ISPs

4 WHAT Internet service providers are available in this area?

5 What is the world wide web?
A system of computers that allows you to communicate with other computers talking the same language (protocol)

6 What is Protocol? Protocol: rules for communicating between two electronic devices Internet Protocol (IP): rules for communicating on the Internet Hypertext Transfer Protocol (HTTP): rules for transferring web pages (HTML documents) on the Internet

7 Protocol Simple Mail Transport Protocol (SMTP): protocol used for transmitting electronic mail File Transfer Protocol: a protocol designed to transfer files between an FTP server and a computer—example: downloading software VOIP? Voice over Internet protocol—protocol for transmitting voice communications over the Internet

8 What does URL stand for? Uniform Resource Locator Example:
Specifies the internet address of a file stored on a host computer Example:

9 What is the format of a URL?
Protocol – host – path – filename Example: Protocol: Host: Path: conferences Filename: standings_sec.htm

10 URL vs DNS Computers use a domain name system to translate URLs into numeric addresses The numeric address is known as the Internet Protocol (IP) address; a unique address is assigned to EVERY computer or device that connects to the Internet An IP address is a four-part number, each part consisting of a digit from 0 to 255. Example:

11 What is a Top-level domain?
TLD – Top level domain; suffix at the end of a web address .com—commercial; generic .edu—educational institution—higher ed .gov—state or federal government .mil—U.S. military .net—network service provider (can be used generically) .org—usually nonprofit but can be generic .pro—professional—like physicians, lawyers, CPAs, etc. .name—reserved for individuals

12 What is a country code? A domain name that identifies the location of a server Example: bkps.k12.ar.us .us—United States .jp—Japan .uk—United Kingdom .ca—Canada .mx—Mexico Find country codes for the following: Brazil, Egypt, Jamaica, Cayman Islands

13 What is Web Browser Software?
Provides our connection to the Internet Reads hypertext documents Examples: Google Chrome Safari Firefox Internet Explorer

14 What is hypertext? A document written in HTML that contains words/images that connect to another document

15 What language is used to create hypertext?
Hypertext Markup Language: the language used to write web pages <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " <html xmlns=" xml:lang="en" lang="en" dir="ltr"> <head> <title>Warren G. Harding - Wikipedia, the free encyclopedia</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta name="generator" content="MediaWiki 1.16alpha-wmf" /> <link rel="apple-touch-icon" href=" /> <link rel="shortcut icon" href="/favicon.ico" /> <link rel="search" type="application/opensearchdescription+xml" href="/w/opensearch_desc.php" title="Wikipedia (en)" /> <link rel="copyright" href=" /

16 What is a plug-in? A program that works WITH the web browser to display multimedia. Flash Java Quicktime Typically not a stand-alone program

17

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