Cisco 200-125 Exam

Which IPv6 address is the equivalent of the IPv4 interface loopback address

  • A. ::1
  • B. ::
  • C. 2000::/3
  • D. 0::/10
Answer: Option A.

In IPv6 the loopback address is written as,
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.

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