Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1?
A.
::1
B.
::
C.
2000::/3
D.
0::/10
Explanation:
In IPv6 the loopback address is written as,
::1
This is a 128bit number, with the first 127 bits being ‘0’ and the 128th bit being ‘1’. It’s just a
single address, so could also be written as ::1/128.