:* Primary DNS server: running on VM2, pri-dns.<yourdomain>.ops, which is authoritative for your domain. It will be non-recursive, and must allow anyone to request answers to DNS queries of your domain.:* Caching-only DNS server: running on VM3, co-nfs.<yourdomain>.ops, which allows DNS queries only from network devices in your own private network. It will perform recursive DNS queries to the appropriate DNS servers or on its cache for answers.:* Root Name server: running on VM4, rns-ldap.<yourdomain>.ops, which is authoritative for the root zone only. It will answer queries from anyone to request DNS queries for the entire DNS namespace. You need to <b>collaborate</b> other root name server players in the virtual lab environment.