What is the purpose of IP sets?

What is the purpose of IP sets?
A . They group together IP addresses that are assigned to the same network interfaces.
B . They group together IP addresses and networks that can be referenced by the network routing table.
C . They group together IP addresses that can be referenced by netfilter rules.
D . They group together IP and MAC addresses used by the neighbors on the local network.
E . They group together IP addresses and user names that can be referenced from /etc/hosts.allow and /etc/hosts.deny

View Answer

Answer: C