Discovering ComputersThe InternetThe InternetServices on the InternetSome Internet StatisticsGlobal Internet Traffic Growth to 2017 The Zettabyte Era*Names of Large NumbersInternet World Usage StatisticsThe Internet TodayInternet Access Methods & Home NetworksDownload Times for Common AppsLive Photos from Around the WorldAerial Photographs of the United StatesInstagram (Photo Sharing)Explain Parts of a Web Address (URL)Parts of a URLParts of a URLFinding Information on the InternetGoogle & the U.S. Federal WebGoogle & the U.S. Federal WebWeb 1.0 & Web 2.0 (Social Networking)Some Good Web sites to visitPodcasting Web Site LinksWeB LOGs (BLOGs)FaceBook Aug 2014 ( 1.28 billion users)Mark Zuckerberg, FaceBook CEOTwitter.com (Send a “Tweet”)What are Hash Tags ? #What are Hash Tags #Microblogging Web SitesThe World Wide Web: WikipediaWhat is a Widget Web Site ?History of the InternetEvolution of the InternetHistory of the InternetWeb Site Growth Rate on the InternetHow slow is Today’s Internet ?History of the InternetHistory of the InternetTechnology TrailblazerTim Berners-Lee …TodaySome of the Communications Protocols used on the InternetVinton Cerf: Co-designer of TCP/IPInternet in SpaceInternet in SpaceInternet in SpaceHow the Internet WorksInternet is a Packet Switching NetworkInternet: High speed data linesInternet: High speed data linesT-Carrier System (United States)E-Carrier System (Europe)How the Internet WorksThe InternetThe InternetTop Level Domain NamesAbout Internet IP AddressesInternet AddressesIP Address ClassificationsIP Address ClassificationsIP Address ClassificationsHiding your IP AddressRegistering a Web siteWeb Site HostingAbout New IPv6 Internet AddressesAbout New Internet Addresses (IPv6)The need for IPv6About New Internet Addresses (IPv6)The Internet of ThingsThe World Wide WebThe World Wide WebHow Web Browsers WorkThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebGoogle Search for iPad: 1.18 Trillion hitsTips for Searching the WebTracert, Ping, IPConfig UtilitiesTracert, Ping, IPConfigThe World Wide WebThe World Wide WebThe World Wide WebRSS: Really Simple SyndicationThe World Wide WebThe World Wide WebThe World Wide Web Graphics FormatsThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide WebThe World Wide Web: Virtual RealityThe World Wide WebElectronic CommerceE-MailSpam Emails (Junk Emails)Other Internet ServicesOther Internet ServicesEmail: What is Blind Carbon Copy (BCC)?Other Internet Services: Email RoutesE-Mail: The SMTP (Server)E-Mail: The SMTP (Server)TCP/IP Ports (Software Ports)E-Mail: The POP3 ServerTypes of Email ServersE-Mail: IMAP (Internet Mail Access Protocol)Other Internet Services: FTPOther Internet Services (LISTSERVs)Other Internet Services: Chat RoomsChat Room LingoChat Room LingoOther Internet Services: IMAOL IM:Other Internet Services: VoIPInternet Telephony: Voice over IP (VoIP)Internet Telephony (VoIP) Web SitesNetiquette: “Network Etiquette”Netiquette: Network EtiquetteFooling Web Crawler Software on the WebThe Internet: The Dark SideWeb PublishingWeb Publishing SoftwareNeeded Web Developer SkillsSummary of the Internet & World Wide WebDiscovering Computers CHAPTER 2THE INTERNET & the WORLD WIDE WEB 1The Internet2The Internet The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve more than 2.5 billion users worldwide. TCP handles packet management; IP does error checking. It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by a broad array of electronic and optical networking technologies.3Services on the InternetWhat are some services found on the Internet?p. 2.02 Fig. 2-1Next4. Chat rooms(4)(1)1. E-mail(2)2. Web, BLOGs(3)3. File transfers(ftp) (5)5. Message Boards(6)6. Instant messaging (IM)4Some Internet StatisticsGoogle searches: over 5.1 billion per dayEmails: about 300 billion/ day (3 million/second)90 trillion emails per year (90% spam & viruses)2.5 billion email usersText Messages: about 6 billion per dayActive blogs: over 155 millioniTunes downloads: over 10 billionAverage time spent online: > 18 hours per week5Global Internet Traffic Growth to 2017The Zettabyte Era*1992: 100 gigabytes per day1997: 100 gigabytes per hour2002: 100 gigabytes per second2007: 2,000 gigabytes per second2012: 12,000 gigabytes per second2014: 16,000 gigabytes per second2017: 35,000 gigabytes per second *Note: One Zettabyte = 1021 bytes Zettabyte = (1000 x billion x billion) = 103 x 109 x 109Source: Network World June 3, 2013 6Names of Large NumbersWikipedia Linkhttp://en.wikipedia.org/wiki/Names_of_large_numbers7Internet World Usage StatisticsClick on:http://www.internetworldstats.com/stats.htmInternet Traffic Report:http://www.InternetTrafficReport.comAn Internet 2 does exist, but will NOT replace today’s Internethttp://www.internet2.edu/Led by more than 200 U.S. universities, working with industryand government, Internet2 develops and deploys advancednetwork applications and technologies for research and highereducation, accelerating the creation of tomorrow's Internet. 8The Internet Today•Many home and small business users connect to the Internet via high-speed broadband Internet serviceFiOS9Internet Access Methods & Home NetworksPrimary method of Internet access:Cable or FiOS: 50 % DSL: 39.7 % FiOS: over 12 million homes nowDial-up: 8.7%Satellite: 1.6%Home Networks86 % have a home network65 % have WiFi network33 % use wired Ethernet network 5% use phone-line network 1.0 % use power line (electrical lines)10Download Times for Common Apps File Size & Type1.5 Mbps DSL 5 Mbps Cable 50 Mbps(FiOS)Fiber Optics5 MB MP3 file 33 seconds 10 seconds 1 second50 MB digital photos5.5 minutes 1.7 minutes 10 seconds125 MB video-game demo14 minutes 4 minutes 25 seconds5 GB HD movie9 hours 2.8 hours 17 minutes11Live Photos from Around the WorldWeb cam photos of various places in the world: www.earthcam.com12Aerial Photographs of the United StatesOther nice things about the Internet…Visit Microsoft’s Local Live Web site:http://www.virtualearth.com (Same as next link