A credit union runs its branch firewall as a virtual machine on a host, not as a separate hardware appliance. Which concept describes that choice?
Select an answer to reveal the explanation.
Short Explanation
The firewall used to be a box on a shelf, and now the same job rides as a virtual machine on a server you already run. That shift, from a dedicated appliance to a network function in software, is network functions virtualization. A content cache and an empty recovery site are different ideas wearing the wrong name.
Full Explanation
Network functions virtualization takes a function that used to require a dedicated appliance, such as a firewall or a router, and runs it as software on a general-purpose host or hypervisor. The credit union's branch firewall is a virtual machine rather than a separate hardware appliance, which is that model. A firewall does not have to be a physical appliance to be valid. Virtual firewalls are a normal design when the host and the isolation are done properly. A content delivery network caches content near users. It is not the name for a virtual firewall image. A cold site is space and power for disaster recovery. It does not convert a firewall into a virtual machine. Exam caveat: virtualizing the firewall does not remove the need for a resilient host, a correct virtual switch, and a tested failover. The function moved. The security requirement did not disappear. Operational check: confirm the virtual firewall's interfaces are on the intended virtual networks and that a host failure does not silently remove the only inspection point.