What is the 8-bit binary prefix for IPv6 Unique Local Addresses (ULA)?
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Correct answer: 11111100.
Why this is the answer
The correct 8-bit binary prefix for IPv6 Unique Local Addresses (ULA) is 11111100. This translates to the hexadecimal prefix FC00::/7. ULAs are designed for local network communication and are not routable on the global internet. The prefix 11111100 (FC) indicates that the address is a ULA. The other options are incorrect: 00000000 (00) is not a defined prefix for ULA. 11111111 (FF) is used for multicast addresses. 11111101 (FD) is part of the ULA range but specifically indicates a /8 prefix (FD00::/8), not the overarching /7 prefix that defines the entire ULA block. The question asks for the 8-bit binary prefix for ULA, which is the first 8 bits of the FC00::/7 range.
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