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Understanding Data Link Layer Protocols in LAN Networks

Explore LAN concepts like Ethernet and WiFi protocols, and why standards prevail in IT. Learn about routing, medium access, and the crucial role of data link layer in network communication. Discover implications for internet skills and applications development.

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Understanding Data Link Layer Protocols in LAN Networks

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  1. The data link layer Skills: none IT concepts: LAN, medium access, Ethernet and WiFi protocols, why standards win This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. Internet concepts Applications Technology (communication) Implications for Internet skills Application development Content creation Where does this topic fit?

  3. TCP/IP protocol layers from 1,000 feet up Programs that do useful work like retrieve Web pages, copy files, send and receive email, etc. Make client-server connections and optionally control transmission speed, check for errors, etc. Route data between networks Route data within the local area network Specify what medium connects two nodes, how binary ones and zeros are differentiated, etc,

  4. The view from 2,000 feet

  5. Networks inside the cloud The router at the edge of each network

  6. The LANs and the Internet Data link layer Internet layer Data link layer

  7. A simple LAN combining data link (Ethernet and WiFi) and internet (IP) protocols in one box

  8. A complex LAN may have many switches and routers

  9. Data link layer protocols Ethernet (copper and optical fiber) WiFi (physical and data link)

  10. Transfer data and check for errors 101011010101010101101010111010101011 101011010101010101101010111010101011

  11. Medium access control

  12. WiFi and Ethernet won because they were Open Dynamic (WiFi was also license free)

  13. The data link layer Skills: none IT concepts: LAN, medium access, Ethernet and WiFi protocols, why standards win This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

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