What type(s) of firewalls provide(s) the greatest degree of protection and control because both firewall technologies inspect all seven OSI layers of network traffic?

What type(s) of firewalls provide(s) the greatest degree of protection and control because both firewall technologies inspect all seven OSI layers of network traffic?
A . A first-generation packet-filtering firewall
B . A circuit-level gateway
C . An application-layer gateway, or proxy firewall, and stateful-inspection firewalls
D . An application-layer gateway, or proxy firewall, but not stateful-inspection firewalls

View Answer

Answer: C

Explanation:

An application-layer gateway, or proxy firewall, and stateful-inspection firewalls provide the greatest degree of protection and control because both firewall technologies inspect all seven OSI layers of network traffic.