What are the correct entries in the following description of firewall security zones?

The DMZ security zone solves the problem of server placement well, and this security area can place devices that need to provide network services to the outside world.

The Local zone is the highest security zone with a priority of 99.

Data flows between security domains are directional, including Inbound and Outbound.

Normally, the two communicating parties must exchange messages, that is, there are messages transmitted in both directions between security domains.