Which of the following sentences is true for the shown BIND9 configuration?
options {
directory “/var/named”;
allow-query { any; };
allow-recursion {127.0.0.1; 10.0.0.0/24; };
forwarders {192.168.0.4; };
forward first;
};
zone”.” {
type hint;
file “named.ca”;
};
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.
Explanation:
A) would be correct if allow-recursion {any;}; was specified.
C) would be correct if no forwarders were specified.
D) all hosts may initiate a zone transfer. disallow with allow-transfer {none;};
E) would be correct if forward only; was specified or no root-Servers were specified.