But a basement with physical access control is genuinely more secure from intrusion. Why is middle floor ‘better’?
You’re right that access control matters — but ISACA ranks environmental risk above access control for computer-room placement. Basements flood. ISACA’s guidance says middle floor because it avoids ground-level intrusion AND top-floor storm/roof risk AND basement flood risk. The exam wants the ISACA answer, not the field-engineering answer.
How do I spot these ‘ISACA-published position’ questions before I answer?
Watch for questions asking ‘most appropriate’ or ‘BEST’ in areas with multiple defensible answers: physical security, segregation of duties, audit report distribution, risk response selection. Those are ISACA-doctrine questions — pick the option that matches the published standard, not the one that sounds most practical.