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1.3 Explain the purpose and properties of IP addressing.
- A, B, C and D
Class A - 0-127
Class B - 128 - 255
Class C - 256 - 191
Class D - 192 - 223
- Public vs. Private
Public IP Addresses are visible to the public. When the public addresses are assigned, routes are programmed into the routers of the Internet so that traffic to the assigned public addresses can reach their locations.
Private IP addresses can be used on a private network, but are not routable through the public Internet. The Internet Assigned Numbers Authority (IANA) has reserved three blocks of the IP address space for private internets.
Private address ranges include:
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
More on Address Allocation for Private Networks
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