When an IPv6 device with no pre-configured IPv6 address powers up, it can calculate a global 128-bit IPv6 address for itself using Stateless Address Autoconfiguration (SLAAC), which combines two values: (a) a 64-bit IPv6 Prefix for the subnet (link) and (b) a 64-bit Interface ID.

True

Explanation:

IPv6 Is a later version of IP addresses, used to solve the problem of the limited number of IPv4 addresses in the network.

Just like IPv4, IPv6 can also is configured to a device statically and dynamically. Dynamic IPv6 configuration could be a stateless autoconfiguration SLAAC, a stateless DHCPV6 or a stateful DHCPV6.

The IPv6 address is configured with a prefix and a prefix length and a EUI generated 64 bit interface or a random interface id by the device.