200-301 Cisco Certified Network Associate (CCNA)

When configuring IPv6 on an interface, which two IPv6 multicast groups are joined? (Choose two.)

  • A. 2000::/3
  • B. 2002::5
  • C. FC00::/7
  • D. FF02::1
  • E. FF02::2
Answer: Option D, E.
Explanation: 

When an interface is configured with IPv6 address, it automatically joins the all nodes (FF02::1) and solicited-node (FF02::1:FFxx:xxxx) multicast groups. The all-node group is used to communicate with all interfaces on the local link, and the solicited-nodes multicast group is required for link-layer address resolution. Routers also join a third multicast group, the all-routers group (FF02::2).
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-3s/ipv6-xe-36s-book/ip6-multicast.html

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