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Computer Networking

Week1

Chap.1

screenshot 2023-09-11 at 2.31.52 PM

1.2 Network Edge

Home Access

  • DSL:digital subscriber line
  • Cable
  • FTTH:fiber to the home
  • 5G fixed wireless

Enterprise Access

Physical Media

  • Twisted Pair Copper
  • Coaxial Cable
  • Filber Optics
  • Satellite Radio Channel

1.3 Network core

Packet-switching

  • Store and Forward transmission

    • (You have to store the whole package, routing the ip then broadcast) Length L, speedR
    • Forcasting Delay
    • End to end delay
  • Output buffer

    • Queing Delay
    • Packages Loss
  • Forwarding Tables and Routing Protocols