Which two reductions are the correct reductions of the IPv6 address
2001:0d02:0000:0000:0014:0000:0000:0095? (Choose two)
A.
2001:0d02:::0014:::0095
B.
2001:d02::14::95
C.
2001:d02:0:0:14::95
D.
2001:d02::14:0:0:95
Explanation:
A is not correct because we can’t use triple colons (:::) in IPv6 presentation. B is not correct
because we can’t use double colons (::) twice. You can use it only once in any address
because if two double colons are
placed in the same address, there will be no way to identify the size of each block of 0s.
Remember the following techniques to shorten an IPv6 address:
– Omit leading 0s in the address field, so :0000 can be compressed to just :0 and :0d02 can
be compressed to :d02 (but :1d00 can not be compressed to :1d)
– Use double colons (::), but just once, to represent a contiguous block of 0s, so
2001:0d02:0000:0000:0014:0000:0000:0095 can be compressed to 2001:0d02::14:0:0:95 or
2001:0d02:0:0:14::95