ISC2 Certified Cloud Security Professional (CCSP) Practice Question
Your organization is redesigning its on-premises private cloud data center located in a humid coastal region. Leadership has mandated that the new facility must satisfy Uptime Institute Tier III requirements and reduce the likelihood of outages caused by environmental support system failures. Which design decision most directly addresses the physical and environmental protection requirement?
Deploy N+1 computer-room air-conditioning (CRAC) units connected to independent electrical feeders for full cooling redundancy.
Enable 802.1X port-based authentication on all access switches to prevent unauthorized network use.
Implement stretched VM clusters to allow live migration between hypervisors during maintenance events.
Create separate public and private subnets distributed across two virtual availability zones.
Tier III data centers must be concurrently maintainable: every critical support component- including cooling-must have at least one redundant (N+1) unit on an independent distribution path. Installing additional CRAC or CRAH units fed by separate power circuits ensures that if any single cooling unit or power feed fails, sufficient capacity remains to maintain temperature and humidity within safe operating limits. The other options focus on logical, compute, or network resiliency and do not directly mitigate environmental risks within the facility.
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Platform & Infrastructure Security
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