As of October 2018, what was the IPv6 adoption rate in the United States?

• A. 2.9%
• B. 34%
• C. 0.2%
• D. 25.7%

Answer: (B)

The question is about how much of Internet traffic in the United States was using IPv6 at that time. Adoption rate here refers to the share of traffic that travels over IPv6, not the number of devices. By October 2018, major measurement sources showed that around one-third of United States Internet traffic to large platforms like Google was happening over IPv6, roughly 34%. This reflects widespread deployment by ISPs and mobile networks and growing native IPv6 support in services, even though many networks still use IPv4 as well. The other options would indicate much smaller or different shares than what was actually observed for that period, so 34% best matches the measured adoption then.