1 / 19

Networks

Networks. MGMT 661 - Dannelly Night 2, Part 2 Chapter 7. Basic Network Types. LAN - Local Area Network small area (e.g. a building) small number of machines WAN - Wide Area Network large area usually a collection of LANS MAN - metropolitan area network. Old LAN Topologies.

Download Presentation

Networks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Networks MGMT 661 - Dannelly Night 2, Part 2 Chapter 7

  2. Basic Network Types • LAN - Local Area Network • small area (e.g. a building) • small number of machines • WAN - Wide Area Network • large area • usually a collection of LANS • MAN - metropolitan area network

  3. Old LAN Topologies Bus NetworkToken Ring

  4. Common LAN Topology • Star Network • Ethernetis the most common type of LAN • Advantage: • Fault Tolerant • Disadvantage: • lots of wires • requires a "switch"

  5. Network Reality Figure 7-2 from textbook

  6. Network Devices • Switch • Router • Bridge, Repeater, ... • Hub • Printers • Servers

  7. Transmission Media • Twisted-Pair • used in your house for the phone • used by a DSL Modem • also used for Ethernet • Coaxial Cable • used in your house for cable TV • used by a Cable Modem • Radio • WiFi • Bluetooth • Fiber Optic

  8. So what do I buy? • Which is better Cable or DSL? • It depends on your location. • What type of wireless router do I buy? • A • not on same frequency as phones • short range • B and G • longer range and faster than A • cordless phones can interfere • B is common in airports, etc. • N • fastest, good range • not compatible with B and G

  9. Virtual Private Networks • Cost effective method for building your own WAN. • Instead of running your own fiber optic cable, pretend that you did. • Encrypted Data is sent between office locations using a standard internet connection.

  10. The Internets • “United States President Bush used the improper pluralization of the word "Internet" publicly during the 2000 election campaign; however, the term gained cachet as an Internet humor meme only following Bush's use of the term in the second 2004 presidential election debate on October 8, 2004.” en.wikipedia.org • “It’s not a truck. It’s a series of tubes.” U.S. Senator Ted Stevens

  11. Internet History ARPAnet 1975 pic from som.csudh.edu • 1969 - ARPAnet • 1973 - ARPAnet adds 1st international nodes (London and Norway) • 1977 - first email application • 1984 - DNS introduced with 1000 nodes • 1991 - First web server • 1998 - birth of Google Inc. • 2000 - 27.5 million domains • 2011 - 130 million domains

  12. Current Number of Domains Last 24 Hours - Updated June 11, 2012 http://www.domaintools.com/internet-statistics/

  13. How to create your own domain • Register an IP Address and Name with ICANN • or use a Server Farm http://www.mygtv.net/wp-content/uploads/2009/02/farm2.jpg

  14. 14 / 13

  15. October 2009 source: unknown

  16. How Info Moves on the Internet • Routing of Packets • TCP / IP mon-cre Comporium Steve's Mom and Dad Steve

  17. Net Neutrality • The Internet is mostly neutral. • Every packet is equal to every other packet, regardless of type, destination, or owner. • The Case For Neutrality: • Neutrality ensures a level playing field. • The Case Against Neutrality: • The telecom companies own the "pipes", so they should be allowed to manage them and charge for them however they want.

  18. A Non-Neutral Net http://images.appleinsider.com/netneutrality091808.png

  19. Next Class • Debates • Ethics and Social Implications • Do you have a right to privacy? • How much does ChoicePoint know about you? • What is the economic value of high speed internet saturation? • Legal Issues • How can Microsoft legally get away with selling such faulty products?

More Related