Final answer:
The dynamic addressing method for GUAs where devices rely solely on the contents of the RA message for their addressing information is Method 1: SLAAC (Stateless Address Autoconfiguration). so, option 1 is the correct answer.
Step-by-step explanation:
The dynamic addressing method for GUAs where devices rely solely on the contents of the RA message for their addressing information is Method 1: SLAAC (Stateless Address Autoconfiguration).
In SLAAC, the devices generate their IPv6 addresses by combining their interface identifier (based on the MAC address or other identifiers) with the prefix information provided in the RA message. The RA message is sent by the router on the network and contains the necessary information for address configuration.
Unlike the other methods mentioned, SLAAC does not involve the use of DHCPv6 (Dynamic Host Configuration Protocol version 6) for address assignment, meaning the devices do not rely on DHCPv6 servers for addressing information.
The dynamic addressing method for Global Unicast Addresses (GUAs) where devices rely solely on the contents of the Router Advertisement (RA) message for their addressing information is Method 1: SLAAC (Stateless Address Autoconfiguration). This method enables devices to configure their own IP addresses autonomously by appending their interface identifier to the prefix advertised in the RA. Unlike stateful DHCPv6, which requires a DHCP server to assign addresses, and SLAAC with stateless DHCPv6, which uses both RA and a DHCP server for additional configuration, SLAAC relies just on RA messages for address configuration.