Louise is troubleshooting an application firewall that service as a supplement to the company's network and host firewalls and intrusion prevention system as a means to provide additional protection against web$-$based attacks. The firewall technology suffers somewhat frequent restarts that make it unavailable for $10$ minutes at a time. What configuration should she consider to maintain availability during those periods and have the lowest cost to the company? Group of answer choices High availabilty cluster Failover device Fail open Redundant disks