Which of these represents an IPv6 link-local address?
link-local addresses always start at fe80::/10 each hex number takes 4 bits to represent fe80 is 1111 – F 1110 – E 1000 – 8 0000 – 0
FE80 = 1111 1110 1000 0000 the mask is /10 so the first 10 bits are invariable 9th bit is always 1, 10th bit is always 0, that makes the maximum value for the first group of hex numbers in binary: 1111 1110 1011 1111, or FEBF in hex
the entire range would be… FE80:: to FEBF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF that’s a HUGE space. nothing new tho as this is ipv6 we’re talking about. this means option B could be valid too. and it is
some reference: http://en.wikipedia.org/wiki/Reserved_IP_addresses http://en.wikipedia.org/wiki/Link-local_address
Correct answers B & C. I’m starting loose my trust to this site..
How abt answer B? im confused i think B&C should b correct, am i correct? pls xplain me
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