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Lesson 07 / 4217%
Networking1/4

Networking Fundamentals

L7 · ApplicationHTTP, DNS, SSHL6 · PresentationTLS, JPEG, ASCIIL5 · SessionRPC, NetBIOSL4 · TransportTCP, UDPL3 · NetworkIP, ICMP, routersL2 · Data LinkEthernet, MAC, switchesL1 · Physicalcables, fiber, RFdata flows top → bottom on send · bottom → top on receive
Visual explanation diagram · click steps to walk through it

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