A network designer wants to improve security at the edge of the network and allow routing protocols to communicate without any additional configuration.
What firewall mode meets the design requirements?

A.
routed

B.
zoned

C.
context

D.
transparent

Explanation:
Routed Firewall
The routed firewall is the default mode for an ASA firewall. It acts as a layer 3 device and is a routed hop; this acts in the same way as a router would. It uses routing
protocols and static routes. Forwarding is down with destination IP addresses.
Transparent Firewalls
Transparent firewalls are known as Bumps in the Wire. They work purely at layer 2 and is not seen as a hop; opposed to layer 3 routed firewalls which decrement
TTL. By bridging interfaces the ASA can forward traffic transparently to the end user/device. It is important to remember there are limitations to transparent firewalls
in its capabilities and to keep this in mind when designing networks with Cisco ASA firewall. Forwarding is done with destination MAC addresses.