Which of the following is the shortest valid abbreviation for FE80:0000:0000:0100: 0000:0000:0000:0123?
- FE80::100::123
- FE8::1::123
- FE80::100:0:0:0:123:4567
- FE80:0:0:100::123
Explanation: If you are following the steps in the book, the first step removes up to three leading 0s in each quartet, leaving FE80:0:0:100:0:0:0:123. This leaves two strings of consecutive all-0 quartets; by changing the longest string of all 0s to ::, the address is FE80:0:0:100::123.
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