A. Any host, from any network, may use this server as its main DNS server.
B. If the server doesn’t know the answer to a query, it sends a recursive query to 192.168.0.4.
C. If the server doesn’t know the answer to a query, it sends a query to a root DNS server.
D. Hosts in the network 10.0.0.0/24 will be able to ask for zone transfers.
E. If the server doesn’t know the answer to a query, it sends a recursive query to 192.168.0.4 and, if this fails, it returns a failure.