Consistent Hashing. Data replication and Vnodes

The section “Data replication using Consistent Hashing”

Is this description connected with Vnodes or it’s just explaining how replication could be done without Vnodes?

In the section about Vnodes we see that every vnode is assigned to two physical servers sooo… replication is done, isn’t it? So how Vnodes and “This results in each node owning the region on the ring between it and its Nth predecessor” are connected?