A DNS server is correctly configured to resolve queries. On a system on the network, you run the
command, ping www.sun.com, and immediately receive the error message:
ping: unknown host www.sun.com
What are two possible causes of this problem? (Choose two.)
A.
The DNS server is not a secondary server for sun.com.
B.
The www.sun.com host does not reply to ping requests.
C.
The file, /etc/resolv.conf, has NOT been configured on the system.
D.
The nscd daemon is NOT running on the system.
E.
The file, /etc/dns.conf, has NOT been configured on the system.
F.
The file, /etc/nsswitch.conf, does NOT reference DNS.