Review of Basic Concepts: CH 4-5 <ul><li>Telecommunications </li></ul><ul><li>The Internet </li></ul><ul><li>The Web </li>...
Telecommunictions &  Computer Networking <ul><li>Networking Hardware, Software, and Protocols </li></ul><ul><li>Network Ty...
Telecommunications – Electronic Communications <ul><li>Voice and data telecommunications </li></ul><ul><ul><li>Analog vs. ...
Networking Media <ul><li>Coaxial Cable </li></ul><ul><li>Fiber Optic Cable </li></ul><ul><li>Radio Frequency </li></ul><ul...
Signal Frequency <ul><li>Frequency: the speed at which a signal changes from high to low. </li></ul><ul><li>Bandwidth: the...
Networking Devices <ul><li>Modem: modulates and demodulates signals from one form to another. </li></ul><ul><li>Network Ad...
Networking Devices <ul><li>Network Control Devices: </li></ul><ul><ul><li>Hub </li></ul></ul><ul><ul><li>Switch </li></ul>...
Wireless Fidelity (Wi-Fi) <ul><li>Wi-Fi: devices that communicate wirelessly using the 802.11x protocol. </li></ul><ul><li...
Bluetooth <ul><li>Bluetooth: Wireless technology that enables a wide variety of digital devices to communicate directly. <...
Infrared (IRDA) <ul><li>Infrared technology utilizes infrared rays to send data over a short distance wirelessly.  </li></...
Wireless Comparison Wi-fi Access point centered LAN Omni-direction Through obstructions 250 ft range indoors 11 Mbps Bluet...
Network Types <ul><li>Local Area Network (LAN) </li></ul><ul><ul><li>Connects computer systems and devices within a common...
Network Types <ul><li>Personal Area Network (PAN) </li></ul><ul><ul><li>The interconnection of personal information techno...
Installing Home Wi-fi <ul><li>Requirements </li></ul><ul><ul><li>High-speed Internet </li></ul></ul><ul><ul><li>Cable Mode...
The Internet <ul><li>The Internet  </li></ul><ul><li>The Web </li></ul><ul><li>Applications </li></ul>
Visualization of the Internet’s topology from  http://www.cybergeography.org/atlas/topology.html   What is the Internet?
The Internet <ul><li>The  Internet  is the world’s largest public computer network, a network of networks that provides a ...
Internet Hardware <ul><li>The  Internet backbone  consists of the main pathways and connections of the Internet owned prim...
Internet Hardware <ul><li>Network Service Providers </li></ul><ul><ul><li>Major telecom companies that provide the Interne...
Internet Hardware <ul><li>Points of Presence (POPs) </li></ul><ul><ul><li>Facilities provided by Network Service Providers...
Internet Hardware <ul><li>Routers: computing devices that manage network traffic by evaluating data packets and routing th...
Packet Switching Dear Joan, Hi! How’s it goin’? Just finished midterms, and it looks like I might graduate this semester a...
Packet Switching learned more than I thought in those wonderful lectures that I had previously written you about…. Broken ...
Packet Switching Packet headers added Dear Joan, Hi! How’s it goin’?  Just finished midterms, and it Message 3761HZA  Date...
Packet Switching Each packet sent individually over the network Dear Joan, Hi! How’s it goin’?  Just finished midterms, an...
Packet Switched Network email email
Circuit Switched Network
Packet Switching <ul><li>Packet switching is much more efficient than circuit switching. </li></ul>Technology:   Networkin...
Internet Protocols <ul><li>Protocols  are rules that govern how data is transmitted and received. </li></ul><ul><li>They g...
Internet Protocols <ul><li>TCP/IP </li></ul><ul><ul><li>Transaction Control Protocol (TCP): Divides data into packets for ...
Network Architectures <ul><li>Client/Server </li></ul><ul><li>Peer-to-Peer </li></ul>Original Napster vs. Kazaa
The Web
The Web <ul><li>The  World Wide Web  is an Internet-based service that provides convenient access to information through  ...
Web Protocols & Standards <ul><li>HTTP:  Hypertext Transfer Protocol defines and controls communication between Web server...
Web Protocols & Standards <ul><li>HTML:  Hypertext Markup Language is the formatting language used to define the appearanc...
Web-Authoring Software <ul><li>Web Authoring Software allows you to create HTML documents using word-processor-like softwa...
Internet and Web Applications
The Internet & Web The Internet The Web Communications E-commerce Information Distribution
Communication and Collaboration <ul><li>Face to Face </li></ul><ul><li>Video + Voice </li></ul><ul><li>Voice Only </li></u...
Communication and Collaboration <ul><li>Synchronous Communication takes place in real time. </li></ul><ul><ul><li>Phone co...
Communication and Collaboration <ul><li>Face-to-face </li></ul><ul><li>Video conferencing </li></ul><ul><li>Phone (voice) ...
Voice over IP (VoIP) <ul><li>Technology that enables network managers to route phone calls over the same network they use ...
Residential VoIP <ul><li>Residential VoIP, also called Internet Phone, Broadband Phone </li></ul><ul><ul><li>Place phone c...
News and Information <ul><li>On-line news services allow you to drill-down into the story to get background information an...
Education and Training <ul><li>Life-long learning is your future… </li></ul><ul><li>NETg Offers… </li></ul><ul><li>1,850 I...
E-commerce <ul><li>E-commerce has opened up new opportunities in buying and selling. </li></ul>
Travel <ul><li>The Web has transformed the travel industry. </li></ul>
Employment and Careers <ul><li>The Web assists us in researching career possibilities: </li></ul><ul><ul><li>Selecting a c...
Multimedia & Entertainment <ul><li>Music </li></ul><ul><li>Movies </li></ul><ul><li>Games </li></ul>
Information <ul><li>Research on the Web </li></ul><ul><ul><li>Subject Directories, and Search Engines </li></ul></ul><ul><...
Chapter 4 & 5 Questions? Don’t forget to turn your phone on!!
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Succeeding with Technology Succeeding with Technology

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Succeeding with Technology Succeeding with Technology

  1. 1. Review of Basic Concepts: CH 4-5 <ul><li>Telecommunications </li></ul><ul><li>The Internet </li></ul><ul><li>The Web </li></ul>Please discontinue use of cell phone and turn off ringer
  2. 2. Telecommunictions & Computer Networking <ul><li>Networking Hardware, Software, and Protocols </li></ul><ul><li>Network Types </li></ul><ul><li>Wireless Networks </li></ul>
  3. 3. Telecommunications – Electronic Communications <ul><li>Voice and data telecommunications </li></ul><ul><ul><li>Analog vs. Digital </li></ul></ul><ul><li>Components </li></ul><ul><ul><li>Hardware </li></ul></ul><ul><ul><li>Software </li></ul></ul><ul><ul><li>Protocols: rules of engagement </li></ul></ul>
  4. 4. Networking Media <ul><li>Coaxial Cable </li></ul><ul><li>Fiber Optic Cable </li></ul><ul><li>Radio Frequency </li></ul><ul><li>Twisted Pair Cable </li></ul>
  5. 5. Signal Frequency <ul><li>Frequency: the speed at which a signal changes from high to low. </li></ul><ul><li>Bandwidth: the range of signal frequencies that can be sent over a given medium at the same time. </li></ul><ul><ul><li>Often expressed as bits per second </li></ul></ul><ul><ul><li>Broadband: faster than 200Kbps </li></ul></ul>
  6. 6. Networking Devices <ul><li>Modem: modulates and demodulates signals from one form to another. </li></ul><ul><li>Network Adapter: Expansion card, or external device installed on a computing device used to connect to a network. </li></ul>
  7. 7. Networking Devices <ul><li>Network Control Devices: </li></ul><ul><ul><li>Hub </li></ul></ul><ul><ul><li>Switch </li></ul></ul><ul><ul><li>Repeater </li></ul></ul><ul><ul><li>Bridge </li></ul></ul><ul><ul><li>Gateway </li></ul></ul><ul><ul><li>Router </li></ul></ul><ul><ul><li>Wireless Access Point </li></ul></ul><ul><ul><li>Firewall </li></ul></ul>
  8. 8. Wireless Fidelity (Wi-Fi) <ul><li>Wi-Fi: devices that communicate wirelessly using the 802.11x protocol. </li></ul><ul><li>250-1,000 ft range </li></ul><ul><li>802.11b 4.5 Mbps </li></ul><ul><li>802.11g 11 Mbps </li></ul><ul><li>www.boingo.com </li></ul>Access Point
  9. 9. Bluetooth <ul><li>Bluetooth: Wireless technology that enables a wide variety of digital devices to communicate directly. </li></ul><ul><li>33 ft range </li></ul><ul><li>1 Mbps </li></ul><ul><li>www.bluetooth.com </li></ul>
  10. 10. Infrared (IRDA) <ul><li>Infrared technology utilizes infrared rays to send data over a short distance wirelessly. </li></ul><ul><li>4 ft range </li></ul><ul><li>Narrow-angle cone (30 o ) </li></ul><ul><li>Line-of-sight </li></ul><ul><li>4-16 Mbps </li></ul><ul><li>www.mzoop.com </li></ul>
  11. 11. Wireless Comparison Wi-fi Access point centered LAN Omni-direction Through obstructions 250 ft range indoors 11 Mbps Bluetooth Point-to-point Omni-direction Through obstructions 33 ft 1 Mbps Infrared Point-to-point Narrow-angle Line-of-sight 4 ft 4 Mbps
  12. 12. Network Types <ul><li>Local Area Network (LAN) </li></ul><ul><ul><li>Connects computer systems and devices within a common geographic area </li></ul></ul><ul><li>Wide Area Network (WAN) </li></ul><ul><ul><li>Connects LANs between cities, cross country, and around the world using microwave and satellite transmission or telephone lines. </li></ul></ul><ul><li>Global Area Network (GAN) </li></ul><ul><ul><li>An International network </li></ul></ul><ul><li>An internet </li></ul><ul><ul><li>A network consisting of connected smaller networks </li></ul></ul>
  13. 13. Network Types <ul><li>Personal Area Network (PAN) </li></ul><ul><ul><li>The interconnection of personal information technology devices within the range of an individual - typically using Bluetooth Tech. </li></ul></ul>The Body Bus? The original PAN was designed by Thomas Zimmerman and allowed users to pass digital electronic information through touch, by transferring information from one person’s device to another’s, running a subtly current through the body.
  14. 14. Installing Home Wi-fi <ul><li>Requirements </li></ul><ul><ul><li>High-speed Internet </li></ul></ul><ul><ul><li>Cable Modem or DSL Modem (provided be ISP) </li></ul></ul><ul><ul><li>Wireless Access Point/Router </li></ul></ul><ul><ul><li>Wireless adapters for each device. </li></ul></ul><ul><ul><li>Additional Access Points as needed. </li></ul></ul>http://www.linksys.com/ Cable Modem Wireless Access Point / Router To Cable Co.
  15. 15. The Internet <ul><li>The Internet </li></ul><ul><li>The Web </li></ul><ul><li>Applications </li></ul>
  16. 16. Visualization of the Internet’s topology from http://www.cybergeography.org/atlas/topology.html What is the Internet?
  17. 17. The Internet <ul><li>The Internet is the world’s largest public computer network, a network of networks that provides a vast array of services to individuals, businesses, and organizations around the world. </li></ul><ul><li>The Internet is a combination of hardware, software, and protocols. </li></ul>
  18. 18. Internet Hardware <ul><li>The Internet backbone consists of the main pathways and connections of the Internet owned primarily by telecom companies. </li></ul>http://en.wikipedia.org/wiki/Internet_backbone Verizon’s/MCI’s UUNet carries 28% of Internet traffic
  19. 19. Internet Hardware <ul><li>Network Service Providers </li></ul><ul><ul><li>Major telecom companies that provide the Internet backbone. </li></ul></ul>http://navigators.com/isp.html Network Service Providers 27.9% Verizon/MCI/UUNET 10.0% AT&T 6.5% Sprint 6.3% Genuity (level 3) 4.1% PSINet 3.5% Cable & Wireless 2.8% XO Communications 2.6% Verio 1.5% Qwest
  20. 20. Internet Hardware <ul><li>Points of Presence (POPs) </li></ul><ul><ul><li>Facilities provided by Network Service Providers that allow users to connect to the Internet backbone. </li></ul></ul><ul><li>Internet Service Providers </li></ul><ul><ul><li>Companies that provide users with access to the Internet. </li></ul></ul><ul><ul><li>Dial-up vs. DSS vs. Cell vs. DSL vs. Cable </li></ul></ul><ul><ul><li>Top 22 ISP’s: http://www.isp-planet.com/research/rankings/usa.html </li></ul></ul>
  21. 21. Internet Hardware <ul><li>Routers: computing devices that manage network traffic by evaluating data packets and routing them to their destination. </li></ul>http://computer.howstuffworks.com/router1.htm The Cisco CRS-1 router is controlled by a unique self-healing and self-defending operating system designed for always-on operation while scaling system capacity up to 92 Tbps. Routers such as this one manage traffic on the Internet Backbone. 7’
  22. 22. Packet Switching Dear Joan, Hi! How’s it goin’? Just finished midterms, and it looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I learned more than I thought in those wonderful lectures that I had previously written you about…. An email message
  23. 23. Packet Switching learned more than I thought in those wonderful lectures that I had previously written you about…. Broken into packets looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I Dear Joan, Hi! How’s it goin’? Just finished midterms, and it
  24. 24. Packet Switching Packet headers added Dear Joan, Hi! How’s it goin’? Just finished midterms, and it Message 3761HZA Date May 1 Packet 1 of 3 From sweetykb@aol.com To joan_kelly@yale.edu learned more than I thought in those wonderful lectures that I had previously written you about…. Message 3761HZA Date May 1 Packet 3 of 3 From sweetykb@aol.com To joan_kelly@yale.edu looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I Message 3761HZA Date May 1 Packet 2 of 3 From sweetykb@aol.com To joan_kelly@yale.edu
  25. 25. Packet Switching Each packet sent individually over the network Dear Joan, Hi! How’s it goin’? Just finished midterms, and it Message 3761HZA Date May 1 Packet 1 of 3 From sweetykb@aol.com To joan_kelly@yale.edu looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I Message 3761HZA Date May 1 Packet 2 of 3 From sweetykb@aol.com To joan_kelly@yale.edu learned more than I thought in those wonderful lectures that I had previously written you about…. Message 3761HZA Date May 1 Packet 3 of 3 From sweetykb@aol.com To joan_kelly@yale.edu
  26. 26. Packet Switched Network email email
  27. 27. Circuit Switched Network
  28. 28. Packet Switching <ul><li>Packet switching is much more efficient than circuit switching. </li></ul>Technology:   Networking/Telecoms Wednesday 28 May 2003 Sprint moves to packet-switch network Sprint is to change its entire circuit-switched telephone network to packet technology in an attempt to keep up with customer demand for capacity. Sprint's eight million lines will be moved over to the packet-based asynchronous transfer mode (ATM) system, allowing voice, video and data to be broken down into small digital blocks and sent, in effect, simultaneously.This allows the network to be used more efficiently, and will also allow new multimedia services, Sprint said. Sprint is the first major telecoms company to move all of its local, tandem and long-distance networks over to packet technology, according to Nortel Networks spokeswoman Ann Fuller.
  29. 29. Internet Protocols <ul><li>Protocols are rules that govern how data is transmitted and received. </li></ul><ul><li>They govern all Network and Internet communications: </li></ul><ul><ul><li>The Internet </li></ul></ul><ul><ul><li>The Web </li></ul></ul><ul><ul><li>Email </li></ul></ul><ul><ul><li>Instant Messaging </li></ul></ul><ul><ul><li>Etc. </li></ul></ul>Ports are numeric addresses assigned to specific network services, and used in packet headers to direct data packets to the appropriate service. See http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
  30. 30. Internet Protocols <ul><li>TCP/IP </li></ul><ul><ul><li>Transaction Control Protocol (TCP): Divides data into packets for transmission, and reassembles data from packets upon delivery. </li></ul></ul><ul><ul><li>Internet Protocol (IP): Controls the delivery of packets between IP addresses. </li></ul></ul><ul><li>IP Address </li></ul><ul><ul><li>a 32-bit number that identifies each sender or receiver of information that is sent in packets across the Internet. </li></ul></ul><ul><ul><li>10000000.11111111.10110101.00010111 </li></ul></ul><ul><ul><li>128.255.181.29 </li></ul></ul><ul><ul><li>www.fsu.edu </li></ul></ul>
  31. 31. Network Architectures <ul><li>Client/Server </li></ul><ul><li>Peer-to-Peer </li></ul>Original Napster vs. Kazaa
  32. 32. The Web
  33. 33. The Web <ul><li>The World Wide Web is an Internet-based service that provides convenient access to information through hyperlinks . </li></ul>
  34. 34. Web Protocols & Standards <ul><li>HTTP: Hypertext Transfer Protocol defines and controls communication between Web server and client (Web browser). </li></ul><ul><li>URL: Uniform Resource Locator is the fancy name for a Web address. </li></ul>http://www.icann.org/ http://www.cs.fsu.edu/~baldauf/presentations/swt/2/index.html Domain name
  35. 35. Web Protocols & Standards <ul><li>HTML: Hypertext Markup Language is the formatting language used to define the appearance of Web pages. </li></ul><ul><ul><li>Try View Source in IE </li></ul></ul><ul><li>XML: New and popular standard for describing and classifying data in Web pages and other Web services. </li></ul>
  36. 36. Web-Authoring Software <ul><li>Web Authoring Software allows you to create HTML documents using word-processor-like software </li></ul>Macromedia’s Dreamweaver software allows you to design Webpages and Websites using a WYSIWYG interface.
  37. 37. Internet and Web Applications
  38. 38. The Internet & Web The Internet The Web Communications E-commerce Information Distribution
  39. 39. Communication and Collaboration <ul><li>Face to Face </li></ul><ul><li>Video + Voice </li></ul><ul><li>Voice Only </li></ul><ul><li>Text Only </li></ul>Effectiveness
  40. 40. Communication and Collaboration <ul><li>Synchronous Communication takes place in real time. </li></ul><ul><ul><li>Phone conversation </li></ul></ul><ul><ul><li>Instant Messaging </li></ul></ul><ul><li>Asynchronous Communication allows participants to leave messages to be accessed whenever. </li></ul><ul><ul><li>Voice mail </li></ul></ul><ul><ul><li>Email </li></ul></ul><ul><ul><li>SMS Texting </li></ul></ul>
  41. 41. Communication and Collaboration <ul><li>Face-to-face </li></ul><ul><li>Video conferencing </li></ul><ul><li>Phone (voice) </li></ul><ul><li>Instant messaging/Chat </li></ul><ul><li>Voice mail </li></ul><ul><li>Email </li></ul><ul><li>SMS Texting </li></ul>Synchronous Asynchronous Effectiveness Convenience
  42. 42. Voice over IP (VoIP) <ul><li>Technology that enables network managers to route phone calls over the same network they use for data. </li></ul>Future of Phones: http://newsroom.cisco.com/dlls/video_audio_archive/?all Also see Video Telephony
  43. 43. Residential VoIP <ul><li>Residential VoIP, also called Internet Phone, Broadband Phone </li></ul><ul><ul><li>Place phone calls over your broadband Internet connection. </li></ul></ul><ul><ul><li>http://www.vonage.com </li></ul></ul><ul><ul><li>http://www.voipchoices.com/ </li></ul></ul><ul><ul><li>http://www.fcc.gov/voip/ </li></ul></ul>
  44. 44. News and Information <ul><li>On-line news services allow you to drill-down into the story to get background information and details. </li></ul>Webcasting uses the Web to deliver news video footage.
  45. 45. Education and Training <ul><li>Life-long learning is your future… </li></ul><ul><li>NETg Offers… </li></ul><ul><li>1,850 IT and desktop e-Learning courses </li></ul><ul><li>1,300 business and professional development e-Learning courses </li></ul><ul><li>2,000 up to date, searchable, IT, Desktop and Business Books from Safari </li></ul><ul><li>250 instructor and student manuals for ILT training </li></ul>
  46. 46. E-commerce <ul><li>E-commerce has opened up new opportunities in buying and selling. </li></ul>
  47. 47. Travel <ul><li>The Web has transformed the travel industry. </li></ul>
  48. 48. Employment and Careers <ul><li>The Web assists us in researching career possibilities: </li></ul><ul><ul><li>Selecting a career </li></ul></ul><ul><ul><li>Researching companies </li></ul></ul><ul><ul><li>Networking with colleagues </li></ul></ul><ul><ul><li>Searching want ads </li></ul></ul><ul><ul><li>Creating Resumes & Professional Websites </li></ul></ul>
  49. 49. Multimedia & Entertainment <ul><li>Music </li></ul><ul><li>Movies </li></ul><ul><li>Games </li></ul>
  50. 50. Information <ul><li>Research on the Web </li></ul><ul><ul><li>Subject Directories, and Search Engines </li></ul></ul><ul><ul><li>Issues of reliability </li></ul></ul><ul><ul><li>Library Web sites </li></ul></ul><ul><ul><li>Research Databases </li></ul></ul>Consumers are increasingly reliant upon online resources to ease and inform major life events.
  51. 51. Chapter 4 & 5 Questions? Don’t forget to turn your phone on!!

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