Which of the following is NOT a correct notation for an IPv6 address?
A.
2001:0db8:0:0:0:0:1428:57ab
B.
ABCD:EF01:2345:6789:ABCD:EF01:2345:6789
C.
::1
D.
2001:DB8::8:800::417A
The Answer Is:
D
This question includes an explanation.
Explanation:
This is not a correct notation for an IPv6 address because the the "::" can only appear once in an address. The use of "::" is a shortcut notation that indicates one or more groups of 16 bits of zeros.
1 is the loopback address using the special notation
[Reference: IP Version 6 Addressing Architecture, http://tools.ietf.org/html/rfc4291#section-2.1, , ]
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