Does Zohn 2 have active noise cancellation, and how does its noise isolation work?

No. Zohn 2 does not use Active Noise Cancellation (ANC).

Instead, it uses passive noise isolation created by the seal of the ear tips. A secure seal helps reduce outside sound and keeps the bass response consistent, so finding the right fit matters.

When you want to hear more of your surroundings, you can use Transparency Mode.