Which type of nameserver is provided by the default bind configuration files on Oracle Linux?
A.
A primary name server
B.
A secondary name server
C.
Recursive caching-only nameserver
D.
An authoritative name server
E.
Slave name server
Explanation:
C
http://oracle-base.com/articles/linux/linux-dns-configuration.php
https://docs.oracle.com/cd/E37670_01/E41138/html/ch13s04.html
By default, the BIND installation allows you to configure a caching-only name server using the configuration settings that are provided in /etc/named.conf and files that it includes. This procedure assumes that you will either use the default settings or configure new named configuration and zone files.
So answer C