Question:
Which two statements about IPv6 router advertisement messages are true? (Choose two.)
- They use ICMPv6 type 134.
- The advertised prefix length must be 64 bits.
- The advertised prefix length must be 48 bits.
- They are sourced from the configured IPv6 interface address.
- Their destination is always the link-local address of the neighboring node.
Explanation: IPv6 router advertisement message is one type of the ICMPv6 packets with Type field value of 134. It lists many facts, including the link-local IPv6 address of the router. Normally, it is sent to the all-IPv6-hosts local-scope multicast address of FF02::1. When sent in response to router solicitation messages (ICMPv6 Type 133), it flows back to either the unicast address of the host that sent the RS or to the all-IPv6-hosts address FF02::1.
The advertised IPv6 prefix length must be 64 bits for the stateless address autoconfiguration to be operational.
Exam with this question: CCNA v3.0 (200-125) Study Guide – Exam Dumps
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