ISC2 Governance, Risk and Compliance (CGRC) Practice Question
During a risk assessment for a public-facing e-commerce application, management mandates at least 99.95 percent uptime. Which control would most directly help satisfy the availability principle for this requirement?
Deploy a geographically distributed, load-balanced failover cluster
Require client-side certificate authentication for all users
A geographically distributed, load-balanced failover cluster directly addresses availability because it provides redundant capacity and automatic traffic distribution; if one site or node fails, service continues with minimal interruption, supporting the 99.95 percent uptime objective. The other options primarily protect different security objectives: input sanitization safeguards data integrity, client-side certificate authentication strengthens confidentiality (and to some extent integrity), and HMAC-based digital signatures provide non-repudiation and integrity assurance for logs, but none of these measures keeps the service accessible when hardware or site outages occur.
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ISC2 Governance, Risk and Compliance (CGRC)
Security and Privacy Governance, Risk Management, and Compliance Program
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