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APIPA (part 1) This lesson covers APIPA which stands for Automatic Private Internet Protocol Addressing. APIPA is an address which is automatically assigned to our IP address when no DHCP is received. When an APIPA address is received, it means something is wrong and the DHCP server needs to be checked to see any issues with connectivity. An APIPA address is unable to connect to the Internet and is unable to communicate with other computers. This lesson also covers public and private IP addresses. A public IP address is a singularly unique address for a computer that could be located anywhere in the world and is globally routable, whereas a private IP address is an address that is not routable. There are four classes of private IP addresses: - Class A - Class B - Class C