The fact that you are already bringing up all your expertise on redundancy shows that you can think about this better than others and probably give an answer that fits this requirement well.

Unless we completely reinterpret the requirements (as per your suggestion), (s)he really can't. It is impossible to meet the requirement "Architected never to go down."

What actually confuses me more than anything is how wildly the strength of the writer's connection to reality varies. I mean, two of the "requirements" are:

  # Architected to never go down

and

  # Employs security features

The first is impossible. The second is trivial. All software employs some sort of security feature - the alternative is for the software to be perfectly insecure.

Eh, I dunno.