If an external router filters traffic before it enters the network and another screening device monitors traffic before it enters the internal network, what type of architecture is this?
A.
Screened host
B.
Screened subnet
C.
Dual-homed firewall
D.
Dual subnets
Explanation:
A screened subnet filters external traffic and passes it on to the
firewall (the second screening device) and then on to the internal network. A
screened subnet creates a DMZ by using two routers or firewalls. A screened host is
a screening router that is in front of a firewall, but does not create a DMZ.