Which statement describes the effect of this configuration when a PC tries to configure its IPv6 address?

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#1

A network administrator configures a router to send RA messages with M flag as 0 and O flag as 1. Which statement describes the effect of this configuration when a PC tries to configure its IPv6 address?

  1. It should contact a DHCPv6 server for all the information that it needs.
  2. It should use the information that is contained in the RA message exclusively.
  3. It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information*
  4. It should contact a DHCPv6 server for the prefix, the prefix-length information, and an interface ID that is both random and unique.

Explanation:
ICMPv6 RA messages contain two flags to indicate whether a workstation should use SLAAC, a DHCPv6 server, or a combination to configure its IPv6 address. These two flags are M flag and O flag. When both flags are 0 (by default), a client must only use the information in the RA message. When M flag is 0 and O flag is 1, a client should use the information in the RA message and look for the other configuration parameters (such as DNS server addresses) on DHCPv6 servers.