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OSI Data Link Layer. Network Fundamentals – Chapter 7. OSI Reference Model Layer 2. What will we learn from chapter 7?. Their role in data transmission Prepare data for transmission on network media Media access control methods Common logical network topologies

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OSI Data Link Layer


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    Presentation Transcript
    1. OSI Data Link Layer Network Fundamentals – Chapter 7

    2. OSI Reference Model Layer 2

    3. What will we learn from chapter 7? • Their role in data transmission • Prepare data for transmission on network media • Media access control methods • Common logical network topologies • Encapsulating packets into frames • Layer 2 frame structure - generic fields • Frame header and trailer fields: • addressing • QoS • Type of protocol • Frame Check Sequence

    4. Data Link Layer – Accessing the Media

    5. Data Link Layer – Accessing the Media Why Data Link layer protocols required to control media access

    6. Data Link Layer – Accessing the Media

    7. Data Link Layer – Accessing the Media

    8. Data Link Layer – Accessing the Media

    9. Media Access Control Techniques Controlling access to the media

    10. Media Access Control Techniques Two media access control methods for shared media and their basic characteristics

    11. Media Access Control Techniques Full Duplex and Half Duplex as it relates to Media Access Control for non-shared media

    12. Media Access Control Techniques

    13. Media Access Control Techniques

    14. Media Access Control Techniques

    15. Media Access Control Techniques

    16. Media Access Control Techniques

    17. Media Access Control Addressing and Framing Data

    18. Media Access Control Addressing and Framing Data

    19. Media Access Control Addressing and Framing Data The role of addressing in the Data Link layer - cases where addresses are needed – or not needed

    20. Media Access Control Addressing and Framing Data

    21. What did I Learn from chapter 7? • Their role in data transmission • They prepare data for transmission on network media • Media access control methods • Common logical network topologies • Encapsulating packets into frames • Layer 2 frame structure - generic fields • Frame header and trailer fields: addressing QoS Type of protocol Frame Check Sequence

    22. Data Link Layer Next OSI Physical Layer