A university IoT lab currently relies on a perimeter firewall, while one update service account can administer every device. Which redesign BEST combines least privilege, complete mediation, and layered defense?

Question

Accepted Answer

Limit the updater to authorized devices and update functions, check each command’s permission, and isolate and monitor the management network.

Answer

Encrypt update traffic while leaving the service account’s administrative rights unchanged.

Answer

Share one administrator password across devices and rely mainly on retrospective logs.

Answer

Keep broad update permissions but add a second firewall at the Internet edge.

Answer

Authenticate the service once, then trust all later commands without rechecking authorization.

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A university IoT lab currently relies on a perimeter firewall, while one update ...

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