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Network Protocols

Network Protocols. Exploration. Layering. Why or why not? OSI model TCP/IP protocol suite Models versus implementations. Addressing. Fixed size versus variable length Hierarchy and aggregation Centralized assignment versus distributed. Fragmentation.

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Network Protocols

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  1. Network Protocols • Exploration

  2. Layering • Why or why not? • OSI model • TCP/IP protocol suite • Models versus implementations

  3. Addressing • Fixed size versus variable length • Hierarchy and aggregation • Centralized assignment versus distributed

  4. Fragmentation • Maximum transmission unit (MTU) discovery • Where does fragmentation occur?

  5. Routing • Source-based versus network-based • Distance vector versus link state • Policy routing • Mobility issues

  6. Error control • Detection • Correction and recovery • What are the cause of errors? • Link-based or end-to-end based control?

  7. Flow control • Implicit versus explicit • Windowing • End-to-end based versus network-based • Timers and restransmissions

  8. Network management • Simplicity versus complexity • In-band versus out-of-band • QoS/CoS • Billing

  9. Internetwork security • Placement of security services • Defense in depth and belt-and-suspenders • Obscurity • Walled gardens • Trade-offs

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