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DATA LINK LAYER AND PHYSICAL LAYER Derived From CCNA Network Fundamentals – Chapter 7 and 8

EN0129 PC AND NETWORK TECHNOLOGY I. DATA LINK LAYER AND PHYSICAL LAYER Derived From CCNA Network Fundamentals – Chapter 7 and 8. Data Link Layer – Accessing the Media. The service the Data Link Layer provides as it prepares communication for transmission on specific media.

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DATA LINK LAYER AND PHYSICAL LAYER Derived From CCNA Network Fundamentals – Chapter 7 and 8

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  1. EN0129 PC AND NETWORK TECHNOLOGY I DATA LINK LAYER AND PHYSICAL LAYER Derived From CCNA Network Fundamentals – Chapter 7 and 8

  2. Data Link Layer – Accessing the Media • The service the Data Link Layer provides as it prepares communication for transmission on specific media

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

  4. Data Link Layer – Accessing the Media • The role of framing in preparing a packet for transmission on a given media

  5. Data Link Layer – Accessing the Media • The role the Data Link layer plays in linking the software and hardware layers

  6. Data Link Layer – Accessing the Media • Sources for the protocols and standards used by the Data Link layer

  7. Media Access Control Techniques • The necessity for controlling access to the media

  8. Media Access Control Techniques • Two media access control methods for shared media and the basic characteristics of each

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

  10. Media Access Control Techniques • The purpose of a logical topology and identify several common logical topologies

  11. Media Access Control Techniques • Logical and physical topologies

  12. Media Access Control Techniques • The characteristics of point-to-point topology and the implications for media access when using this topology

  13. Media Access Control Techniques • The characteristics of multi-access topology and the implications for media access when using this topology

  14. Media Access Control Techniques • The characteristics of ring topology and the implications for media access when using this topology

  15. Media Access Control Addressing and Framing Data • The purpose of encapsulating packets into frames to facilitate the entry and exit of data on media

  16. Media access control addressing and framing data • The role of the frame header in the Data Link layer and the fields commonly found in protocols specifying the header structure

  17. Media access control addressing and framing data • The role of addressing in the Data Link layer and cases where addresses are needed and cases where addresses are not needed

  18. Media access control addressing and framing data • The importance of the trailer in the Data Link layer and its implications for use on Ethernet, a "non-reliable" media

  19. OSI Physical Layer

  20. Physical Layer Protocols & Services • The purpose of the Physical layer in the network and the basic elements that enable this layer to fulfill its function

  21. Physical Layer Protocols & Services • The role of bits in representing a frame as it is transported across the local media.

  22. Physical Layer Protocols & Services • The role of signaling in the physical media.

  23. Physical Layer Protocols & Services • Who establishes and maintains standards for the Physical layers compared to those for the other layers of the network

  24. Physical Layer Protocols & Services • Hardware components associated with the Physical layer that are governed by standards

  25. Physical Layer Signaling and Encoding • Network communication at this layer consists of individual bits encoded onto the Physical layer; • and the basic encoding techniques.

  26. Physical Layer Signaling and Encoding • The role of encoding as it applies to the transmission of bits and the value of treating a collection of bits as a code.

  27. Physical Layer Signaling and Encoding • The terms bandwidth, throughput, and goodput

  28. Characteristics & Uses of Network Media • Media characteristics defined by Physical layer standards.

  29. Characteristics & Uses of Network Media • The impact interference has on throughput and the role of proper cabling in reducing interference

  30. Characteristics & Uses of Network Media • The basic characteristics of UTP cable

  31. Characteristics & Uses of Network Media • The basic characteristics of STP and Coaxial cable

  32. Characteristics & Uses of Network Media • Types of safety issues when working with copper cabling

  33. Characteristics & Uses of Network Media • Primary characteristics of fiber cabling and its main advantages over other media

  34. Characteristics & Uses of Network Media • The role of radio waves when using air as the media and the increased need for security in wireless communications

  35. Characteristics & Uses of Network Media • The characteristics used to categorize connectors, some common uses for the same connectors, and the consequences for misapplying a connector in a given situation

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