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Which of the following is true when describing a unicast address?

  • A.Packets addressed to a unicast address are delivered to a single interface.
  • B.These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
  • C.These are like private addresses in IPv4 in that they are not meant to be routed.
  • D.These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Answer: A

Correct answer: Packets addressed to a unicast address are delivered to a single interface.

Unicast is the general category, defined by its delivery behaviour: one address, one interface, one recipient. The other three options describe particular *kinds* of unicast address - global, link-local and unique local - so they answer the later questions in this topic rather than this one.

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