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CS2204: unit 9: Revision

  • Private IP address range:
    • Class A: 10.0.0.0 — 10.255.255.255
    • Class B: 172.16.0.0 — 172.31.255.255
    • Class C: 192.168.0.0 — 192.168.255.255
  • private IPv4 address are the IP address of the device in the local network; they exposed to the outer network behind the router’s IP address.
  • private IPv6 addresses can be reused for every network.
  • the most common default private IP address format is 192.168.x.y; private IP can be found in the device settings and it is assigned to the device by the router.
  • public IPv4 addresses (router IP) must be unique; and assigned to your router by the ISP;
  • attenuation: The degeneration of a signal over distance on a network cable.

  • encoding:

    • 100MB Fast Ethernet => 4B/5B
    • Gigabit Ethernet 1000Base-T => PAM-5

  • Routing algorithms:

    • Routing Information Protocol (RIP) => distance vector
    • ISP => link-state routing