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Chapter 9: Network Access

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  1. Chapter 9:Network Access Network Basics

  2. Chapter 9: Objectives Students will be able to: Explain the role of the data link layer in supporting communications across data networks. Compare media access control techniques and logical topologies used in networks. Explain how physical layer protocols and services support communications across data networks. Build a simple network using the appropriate.

  3. Chapter 9 • 9.1 Data Link Layer • 9.2 Media Access Control • 9.3 Physical Layer • 9.4 Network Media • 9.5 Summary

  4. Purpose of the Data Link LayerThe Data Link Layer

  5. Purpose of the Data Link LayerData Link Sublayers 802.3 Ethernet 802.11 Wi-Fi 802.15 Bluetooth

  6. Purpose of the Data Link LayerMedia Access Control

  7. Purpose of the Data Link LayerProviding Access to Media

  8. Data Link LayerLayer 2 Frame Structure

  9. Layer 2 Frame StructureCreating a Frame

  10. Data Link LayerLayer 2 Standards

  11. Layer 2 StandardsData Link Layer Standards

  12. TopologiesControlling Access to the Media

  13. TopologiesPhysical and Logical Topologies

  14. WAN TopologiesCommon Physical WAN Topologies

  15. WAN TopologiesPoint-to-Point Topology

  16. WAN TopologiesLogical Point-to-Point Topology

  17. WAN TopologiesHalf and Full Duplex

  18. LAN TopologiesPhysical LAN Topologies

  19. LAN TopologiesLogical Topology for Shared Media

  20. LAN TopologiesContention-Based Access

  21. LAN TopologiesMulti-Access Topology

  22. LAN TopologiesControlled Access

  23. LAN TopologiesRing Topology

  24. Data Link FrameThe Frame

  25. Data Link FrameThe Header

  26. Data Link FrameLayer 2 Address

  27. Data Link FrameThe Trailer

  28. Data Link FrameLAN and WAN Frames

  29. Data Link FrameEthernet Frame

  30. Data Link FramePoint-to-Point Protocol Frame

  31. Data Link Frame802.11 Wireless Frame

  32. Network AccessPhysical Layer

  33. Purpose of the Physical LayerThe Physical Layer

  34. Purpose of the Physical LayerPhysical Layer Media

  35. Purpose of the Physical LayerPhysical Layer Standards

  36. Characteristics of the Physical LayerPhysical Layer Functions

  37. Characteristics of the Physical LayerPhysical Components Management Ports Gigabit Ethernet Interfaces SHDSL Interface USB Type A Connector USB Mini-B Connector FastEthernet Switch ports

  38. Characteristics of the Physical LayerFrame Encoding Techniques • Manchester encoding • Non-Return to Zero (NRZ)

  39. Characteristics of the Physical LayerSignaling Method Asynchronous Signal Bursty data Arbitrary gap of time Synchronous Signal Data transitions align with bit time slots Bit time slot

  40. Characteristics of the Physical LayerSignaling Method Amplitude modulation Frequency modulation Phase modulation

  41. Characteristics of the Physical LayerSignaling Method

  42. Characteristics of the Physical LayerBandwidth

  43. Characteristics of the Physical LayerThroughput

  44. Network MediaCopper Cabling

  45. Copper CablingCharacteristics of Copper Media

  46. Copper CablingCopper Media Unshielded Twisted Pair (UTP) cable Shielded Twisted Pair (STP) cable Coaxial cable

  47. Copper CablingUnshielded Twisted-Pair (UTP) Cable

  48. Copper CablingShielded Twisted-Pair (STP) Cable Braided or Foil Shield Foil Shields

  49. Copper CablingCoaxial Cable

  50. Copper CablingCooper Media Safety