N01 cousr-intro


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  • Copyright 2005 Prentice-Hall In a networking course, it seems good to begin with a preliminary definition of the word, “network.” According to this book, “Our preliminary definition of a network is a communication system that allows application programs on different hosts to work together.” This figure looks at networks from the user’s point of view—the only viewpoint that matters in the end. The definition focuses on networks because users only care about applications. The rest is details they don’t care about. The network is shown as a cloud to indicate that the workings of the network should be invisible to users Of course, we have to look inside the network to make it serve user needs. [At the beginning of the 20 th century, an immigrant came to America. He had been told that the streets in America were paved with gold. When he got there, he found that the streets weren’t even paved. Guess who was going to do the paving?]
  • N01 cousr-intro

    1. 1. Introduction to Telecommunications and Network Management Lecture One, 08/31 Fall 2011 Professor Alex Tan 08/31/11
    2. 2. Today ’ s Topic - Course Introduction <ul><li>Why study telecommunications and network management? </li></ul><ul><li>What will be covered in this course? </li></ul><ul><li>About textbooks and other readings. </li></ul><ul><li>About assignments and grades. </li></ul><ul><li>Several communication models and definitions. </li></ul>08/31/11
    3. 3. Why Study Telecom. and Network Management <ul><li>A fast growing field (variance among sectors?!) . </li></ul><ul><li>B ecom ing an essential feature of business environment rather than simply a tool. </li></ul><ul><li>C reating a new economy – network economy, aided by the convergence of computing with telecommunications? iPhone/iPad as an example. </li></ul><ul><li>Many potential jobs!? </li></ul><ul><li>Essential for IT professionals including IM folks. </li></ul><ul><li>Wave?? Bubble?? What?? </li></ul><ul><li>Your thoughts?? </li></ul>08/31/11
    4. 4. What Will Be Covered <ul><li>From the perspective of corporate comm. needs; focus on the related topics. </li></ul><ul><li>Basic design of the Internet </li></ul><ul><li>Standards and architecture in general, and key industry standards. </li></ul><ul><li>Physical network media </li></ul><ul><ul><li>including copper cables, fiber-optics, and radio waves. </li></ul></ul><ul><li>Major security threats associated with computer networking and protocols, tools, and strategies used in the modern network management. </li></ul>08/31/11
    5. 5. What Will Be Covered In This Course <ul><li>Wired and wireless switched network technologies. </li></ul><ul><li>Modern wide-area telecommunications for voice, video, and information services with full mobility. </li></ul><ul><li>Key components and design principles associated with wide area networks that are used by common carriers and enterprises. </li></ul><ul><li>Fundamental characteristics of packet-switched data networks and the key TCP/IP protocols. </li></ul>08/31/11
    6. 6. What Will Be Covered In This Course <ul><li>Relationship between the Internet infrastructure and key networked application architectures, </li></ul><ul><ul><li>including personal and business applications, electronic messaging, the World Wide Web, multimedia network entertainment services and emerging peer-to-peer applications. </li></ul></ul>08/31/11
    7. 7. Goals for This Course <ul><li>First and for most, to build up a broad and current base of technological background and of management knowledge regarding TNM. </li></ul><ul><ul><li>TNM or non-TNM students. </li></ul></ul><ul><ul><li>An expansion and updating for those with engineering background. </li></ul></ul><ul><li>Serve as a starting point for studying further specialized topics in TNM program. </li></ul><ul><ul><li>Particularly for TNM students. </li></ul></ul>08/31/11
    8. 8. Textbooks and Other Readings <ul><li>Required book – Panko (2009), Business Data Networks and Telecommunications, Seventh Edition, Pearson Prentice Hall. </li></ul><ul><li>O ther readings in different flavors (supplementing the above textbook). </li></ul>08/31/11
    9. 9. Assignments and Grading <ul><li>Class participation (5%) </li></ul><ul><li>Lab sessions (15%) </li></ul><ul><li>Midterm exam (close-book) (20%) </li></ul><ul><li>Final exam (close-book) (30%) </li></ul><ul><li>A &quot; Network Profile Report &quot; project (30%) ( the contract ) </li></ul>08/31/11
    10. 10. Q&A <ul><li>Alex Tan’s background – istweb.syr.edu/facstaff </li></ul><ul><li>Your background </li></ul><ul><ul><li>Who are you? </li></ul></ul><ul><ul><li>Why take this course? </li></ul></ul><ul><li>Any other questions? </li></ul><ul><li>Go over the syllabus – More readings might be added as the class goes. </li></ul>08/31/11
    11. 11. Model of Communication <ul><li>One of the typical communication models (communication 101) </li></ul>08/31/11 sender receiver messages messages Channel One Way: No reversal channel. e.g.. traditional Radio and TV broadcasting ( simplex mode ) Two Way: forward and backward channels to facilitate constant and interactive communications. e.g.. telephone, many Internet applications ( half or full duplex mode ) .
    12. 12. Model of Telecommunication <ul><li>The telecommunications model </li></ul>08/31/11 sender receiver messages messages Channel Telecommunications: communication with a specific channel --- Electrical or Electromagnetic means
    13. 13. Model of Traditional Data Communication <ul><li>The DATA communications model </li></ul>08/31/11 sender receiver messages messages Channel Data communications: messages are processed --- Messages are CODED information As various messages are digitized (coded), DATA communications and telecommunications are interchangeable in many cases, including our class. .
    14. 14. TNM Issues – An Overall Picture 08/31/11 sender receiver messages messages Channel Media & Transmission Coding Decoding System/network operation & management Business, Regulation, Competition
    15. 15. Definition of A Network in Panko <ul><li>What Is a Network? </li></ul><ul><ul><li>Preliminary definition: A network is a communication system that allows application programs on different hosts to work together </li></ul></ul>08/31/11 Application 1 Application 2 Host A Host B Network
    16. 16. More About Panko’s Approach <ul><li>Black-Box view is often introduced first. </li></ul><ul><ul><li>Make sense from our daily life experiences. </li></ul></ul><ul><li>Some more technical details are introduced then. </li></ul><ul><ul><li>Try to explain what happened technically by using non-EE type of language. </li></ul></ul><ul><li>In most cases, Panko stops short here. </li></ul><ul><ul><li>Future courses or your self studies will fill in more EE type of explanations and understandings </li></ul></ul>08/31/11
    17. 17. HTTP as An Example <ul><li>First, HTTP applications (Browsing, downloading) from your daily life, based on a black-box view </li></ul><ul><ul><li>Question - how do the applications travel technically? </li></ul></ul><ul><li>TCP/IP protocols are introduced to explain the packets movement. </li></ul><ul><ul><li>Question – how do packets move technically? </li></ul></ul><ul><li>Further, various routing and switching networks are explained. </li></ul><ul><ul><li>Question – what kinds of wires are built technically? </li></ul></ul><ul><li>Even further, wires/wireless links are explained. </li></ul><ul><ul><li>Question – how are signals created and how do they travel? </li></ul></ul><ul><li>EE technical details – often touched superficially. </li></ul>08/31/11
    18. 18. Please Remember <ul><li>Because of Panko’s/textbook’s particular approach, </li></ul><ul><li>At the first time , what the textbook talks about might be difficult for you to fully understand from the technical perspective. </li></ul><ul><li>Many of these concepts will make more sense when more details are introduced later on. </li></ul><ul><li>Chicken-and-egg relationship?! </li></ul>08/31/11