Final answer:
IPv6 does operate in parallel with IPv4, allowing two parallel networks to exist. This coexistence is facilitated by transition mechanisms like tunneling and dual stack, which help in the gradual transition to IPv6.
Step-by-step explanation:
IPv6 operates in parallel with IPv4 addressing, which allows for the two to create essentially two parallel networks. This statement is true. While IPv4 has a limited number of addresses, IPv6 was developed to ensure a much larger address space and to address the exhaustion of IPv4 addresses. Transition mechanisms such as tunneling and dual stack are used to allow for IPv4 and IPv6 to coexist until such time as IPv6 becomes the dominant internet protocol.
False. IPv6 does not operate in parallel with IPv4 addressing, but rather replaces it. IPv6 is intended to replace the outdated IPv4 addressing system by providing a larger address space and better security features. While IPv6 and IPv4 can coexist on the same network, they do not create two parallel networks.