Final answer:
The technology intended to help transition IPv4 networks to IPv6, by expressing IPv4 addresses in IPv6 format, is called IPv6 transition mechanisms.
Step-by-step explanation:
The technology intended to help transition IPv4 networks to IPv6, by expressing IPv4 addresses in IPv6 format, is called IPv6 transition mechanisms.
One common mechanism is IPv4-mapped IPv6 addresses. In this mechanism, an IPv4 address is represented as an IPv6 address by prefixing it with a specific prefix (::ffff:0:0/96) and converting the IPv4 address to hexadecimal format.
For example, the IPv4 address 192.0.2.1 would be expressed as ::ffff:c000:0201 in IPv6 format. This allows IPv6-only networks to communicate with IPv4 networks.