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You want to ping the loopback address of your local host(with IPv6). What will you type?

  • A.
    ping 127.0.0.1
  • B.ping 0.0.0.0
  • C.ping ::1
  • D.trace 0.0.::1

Answer: C

Correct answer: ping ::1

The IPv6 loopback is ::1 - 127 zero bits followed by a one, written in its shortest form. 127.0.0.1 is the IPv4 loopback, and 0.0.0.0 is the unspecified address, whose IPv6 equivalent is :: rather than ::1.

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