Computer Networking ​

Week1 ​

Chap.1 ​

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 $L/R$
  • End to end delay $2L/R$

• Output buffer

  • Queing Delay
  • Packages Loss

• Forwarding Tables and Routing Protocols