Cisco Certified Network Associate (CCNA) Practice Exam

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What multicast address does RIPng use?

FF02::A
FF02::9
FF02::5
FF02::3

The correct answer is: FF02::9

RIPng (Routing Information Protocol for Next Generation), which is the version of RIP used in IPv6 networks, utilizes the multicast address FF02::9 for sending RIP update messages to neighboring routers. This address is specifically designated for routing protocols in IPv6, allowing multiple routers to receive the same updates simultaneously. The correct address ensures efficient communication in a multicast setting, where only devices that are part of the multicast group will respond to the messages sent to this address. The address FF02::9 is reserved for RIPng, differentiating it from other types of multicast communications that may use different addresses. In the context of the other options, they correspond to different multicast groups that are not utilized by RIPng for routing updates. For instance, FF02::A is used for application-specific data, while FF02::5 and FF02::3 pertain to different functions and protocols in the IPv6 multicast addressing framework.