ISC2 Certified Cloud Security Professional (CCSP) Practice Question
During a proof-of-concept migration, your team requests additional vCPU and RAM for a virtual machine hosted in a public IaaS environment. The cloud provider requires a support ticket and up to 48 hours for manual approval before the capacity change is applied. All other functionality-console access, network reachability, and usage-based billing-operates as expected. According to the NIST definition of essential cloud characteristics, which characteristic is not being fully satisfied by this provider?
NIST SP 800-145 lists five essential cloud characteristics. "On-demand self-service" specifies that customers can unilaterally provision computing resources automatically without requiring human interaction with the provider. Because the provider inserts a manual approval step that can take two days, this requirement is not met.
The other listed characteristics do not depend on instant, unattended provisioning:
Broad network access focuses on ubiquitous network availability, which the service does provide.
Resource pooling concerns multi-tenant sharing and dynamic allocation of resources, which still occurs.
Measured service refers to metering and usage-based billing, which is in place. Therefore, the deficiency lies in on-demand self-service.
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Concepts, Architecture and Design
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