Does it make sense for two domain servers to contain exactly the same set of names?

Yes, it can make sense for two domain servers to contain exactly the same set of names, especially for redundancy and high availability purposes. This configuration ensures that if one server fails, the other can still respond to queries without interruption. Additionally, having identical records can facilitate load balancing and improve response times for users accessing the domain. However, it's important to properly manage synchronization between the servers to avoid inconsistencies.