200-301 Question 100
Single answerAn administrator is configuring IPv6 addresses on a network. They want to assign an address that allows multiple devices to respond to the same packet but only if they are part of a specific group. Which type of IPv6 address should the administrator use?
- A
Unicast
- B
Multicast
- C
Anycast
- D
Global Unicast
Show answer and explanation
Correct answer: B
Explanation
IPv6 multicast addresses are designed for one-to-many communication, allowing packets to be sent to multiple devices in a specific group. In this scenario, the administrator needs group-based addressing, which is achieved using multicast addresses. None of the other IPv6 address types (Unicast, Anycast, or Global Unicast) provide this functionality.
- A. Incorrect.
Unicast addresses are used to identify a single device, ensuring one-to-one communication. This does not meet the requirement of allowing multiple devices to respond as part of a group.
- B. Correct.
Multicast addresses are used to send packets to multiple devices that are part of a specific group, which matches the requirement in the scenario.
- C. Incorrect.
Anycast addresses are used when packets need to be delivered to the nearest device among several possible recipients, but not to multiple devices simultaneously.
- D. Incorrect.
Global Unicast addresses are globally routable and used for one-to-one communication, not for group communications as described in the scenario.