What are the advantages of IPV6?
-
Scalability
-
Security
-
Plug and play
-
All the above
IPv6 offers all three advantages: scalability (massive 128-bit address space), security (IPsec is mandatory/integrated), and plug-and-play (stateless autoconfiguration). Unlike IPv4 where these were add-ons or limited, IPv6 builds them into the protocol specification from the ground up.
'All the above' is correct. IPv6's advantages include scalability (128-bit addresses give a vastly larger address space than IPv4's 32-bit, solving address exhaustion), built-in security (IPsec support is mandatory/native rather than optional as in IPv4), and plug-and-play capability (stateless address autoconfiguration lets devices generate their own addresses without DHCP). Since each individual option — Scalability, Security, Plug and play — is a real, commonly cited IPv6 benefit, none can be excluded, making 'All the above' the only complete answer.