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The Internet

iSchools Project Team HUMAN CAPITAL DEVELOPMENT GROUP. The Internet. Internet. Inter = international Net = network a global collection of interconnected networks - a network of networks “Mother of All Network”, “Cyber Village”, “Virtual Community”. Networks. LAN

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The Internet

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  1. iSchools Project Team HUMAN CAPITAL DEVELOPMENT GROUP The Internet

  2. iSchools - CILC for Teachers Internet Inter = international Net = network a global collection of interconnected networks - a network of networks “Mother of All Network”, “Cyber Village”, “Virtual Community”

  3. iSchools - CILC for Teachers Networks LAN equipment + resources facilitate access, transfer and distribution of data and information low cost high-speed data transfer office building, warehouse, campus, or any other facility WAN a bigger network = 2 or more interconnected LANs global companies/ agencies with common databases and information sharing needs Internet: a network of networks accessible to anyone connected to an Internet Service Provider (ISP) with a PC, a modem and a telephone line.

  4. iSchools - CILC for Teachers Client/Server Paradigm servers + client-PCs/users: various uses TCP/IP: Transmission Control Protocol and Internet Protocol common standard by which computers of different types and brands are able to communicate with one another TCP = break down data + transmit in packets IP = routing information to destination/s

  5. iSchools - CILC for Teachers Internet Applications access to a vast load of information Communications Commerce Forum for discussions, opinions Venue for collaboration Social networking www.calgaryeducation.org/tutorials/introinternet.htm

  6. iSchools - CILC for Teachers Basic Internet Services Electronic mail or e-mail, Blog Newsgroups, Bulletin Boards, Forum, Special Interest Groups Mailing Lists, Discussion Groups, Social Networks Remote Logins Search Engines World Wide Web: multimedia information via hypertext Commerce/Trading

  7. iSchools - CILC for Teachers Brief History U.S. Department of Defense Advanced Research Project Agency (DoD ARPA): ARPANET as military communication system 1970’s:universities - email, File Transfer Protocol (FTP), and other services 1983: TCP/IP as standard protocol Domain Naming System (DNS): IP addresses = common names

  8. iSchools - CILC for Teachers Brief History 1986: NFSnet linked five (5) supercomputers with backbone speed of 56kbps (universities sharing resources) superior processing power 1984-1988: hosts (servers) rose from 1,000 to 60,000; bandwidth increased to T1 (1.544 Mbps) more and more countries joining ARPANET folded up in 1990 NFSnet + many new networks: became the Internet of the ‘90s Commercial Internet Exchange (CIX) for commercial use of Internet

  9. iSchools - CILC for Teachers Brief History Today: over 1 billion users worldwide (Dec. 2005) 15.7% of the world's population over 200 countries increasing exponentially (182% from 2000-2005) Once the sole province of the military, research institutions and universities, it is now available to anyone who wants it.

  10. iSchools - CILC for Teachers Internet Architecture IP Addressing (dotted quad) to identify hosts 140.186.81.6 = two parts: network 140.186, host PC 81.6 PC1.1 (140.186.81.6) and PC1.2 (140.186.2.3) = same network router needed for 2 PCs from different networks to talk e.g. PC1.1 to communicate with PC2.1 (140.185.1.1)

  11. iSchools - CILC for Teachers Internet Architecture Domain Naming System user-friendly naming scheme (lettered IP address system) domain name server zones: organizational and geographic 3-letter zones = organization, 2-letter zones = country edu – educational institution mil – military gov – government net – network com – commercial org – organization

  12. iSchools - CILC for Teachers Hardware/Software Requirements Computer Modem for dial-up connections Telephone line, leased line, cellular/cable/satellite networks Some software – browser, email client/app, ftp, etc.

  13. iSchools - CILC for Teachers Internet Service Providers (ISP) • a company that provides Internet connection services to the general public to the Internet • any online system that has direct Internet connection and provides access to it

  14. iSchools - CILC for Teachers Levels of Internet Access Direct Connection – leasing fiber optic cable or similar transmission media Broadband Connection – high-speed “always on” multi-signal connection, small to medium-sized organizations (cable, DSL, satellite) Dedicated Leased-Line Connection – by large organization; entire LAN connected to the Internet Dial-up Connection –most common form of connection; ISDN: high-speed dial-up + digital phone

  15. iSchools - CILC for Teachers Ways to Connect to the Internet Telephone line Ethernet Wi-Fi Wireless Bluetooth Wireless special device (e.g. Blackberry, Treo, combination cell phone/PDAs) Cell Phone with built-in modem type adapters dial-up or through GPRS, special data cable, infrared ports, or Bluetooth

  16. iSchools - CILC for Teachers Comparative Performance A file that takes 1 hour to download via a 56K dial-up connection will take about 26 minutes with an ISDN line, between 2.2 and 13 minutes over a cable connection, and between 2.2 and26 minutes over a DSL connection would take. - CompuKiss.com

  17. iSchools - CILC for Teachers Web Browsing fastest growing Internet service GUI, supports hypertexting Uniform Resource Locator or URL http://www.howstuffworks.com/computers/internet-infrastructure.htm Transmission Protocol Domain or Server Name: to connect to the host server machine or computer where the data is stored Location within the server File Name of the Web page: actual name of the HTML file

  18. iSchools - CILC for Teachers Web Browser

  19. iSchools - CILC for Teachers Web Browser Back Forward Reload/Refresh Stop Address Box Search Home History Bookmark/Favorites Manager Preferences

  20. iSchools - CILC for Teachers Portal & Search Engine

  21. iSchools - CILC for Teachers Search Engine Google, yahoo, lycos, etc. www.calgaryeducation.org/tutorials/googlesearch.htm Number of results, next page Search tips for more specific/focused searches htm link vs. pdf link (open/save) evaluating a site (appropriateness, reliability, validity)

  22. iSchools - CILC for Teachers Web Browser Portal Search Engine query via index servers to access relevant document servers tips Email webmail POP3 email client Blog Collaborative work Groupware, eGroup Discussion Forum download/upload eCommerce PodCasts research application / file downloads Chat, Instant Messaging (IM) Educational Resources Online Learning / Distance Education Online competitions Gaming, Entertainment resources Learning How to Use the Internet Step-by-Step: www.bbc.co.uk/webwise/course

  23. iSchools - CILC for Teachers email Models: Webmail (e.g. Yahoo mail, gmail, Hotmail): must be online to the server housing your mailbox to access and manage your mail. POP3 email client (e.g. Mozilla Thunderbird, MS Outlook): must be online to the server only to download your mail, after that, go offline to read, reply and manage the local mail storage; need to go online again to send

  24. iSchools - CILC for Teachers e-mail address name_of_user@domain_name_of_computer Your online identity! Mailbox name or username - should not contain commas, spaces and parentheses @ (at sign) Address or hostname – domains and sub-domains separated by “.”

  25. iSchools - CILC for Teachers Yahoo Email Account Go to mail.yahoo.com “Sign up now”. succeeding page: “Sign Up for Yahoo! Mail” Fill out the entire form, use the Tab key or the mouse Check validity Yahoo ID. Security word. “Submit This Form”. confirmation page: “Continue to Yahoo Mail” start using your new, free Yahoo email account

  26. iSchools - CILC for Teachers e-mail Parts header Addressee (To:) Carbon Copy (CC:) Blind Carbon Copy (BCC:) Title of Message (Subject:) Sender (From:) body - plain text files or as html file signature (optional) attachment/s Services: Receive Compose Send Reply / Reply to All Forward Junk Mail / Spam Address Book/Contacts Calendar Message Management

  27. iSchools - CILC for Teachers Other useful online services Blog (blogger, blogspot) Teacher / Education Portals (e.g. EdNA.edu.au, tsof.edu.au, teach-nology.com) Online Resources / Libraries (e.g. iSchools WebBoard, elib.gov.ph, skoool, EMC online, google videos) Discussion Forum (Teachers.Net) Social Networks (e.g. Friendster, Links) Real-time Communications (YM, Skype) Online Learning Content Management Systems (e.g. Manhattan Virtual Classroom, Nuvvo, moodle) Wiki, Groups (e.g. Yahoo Groups)

  28. Thank you

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