ISC2 Certified Cloud Security Professional (CCSP) Practice Question
Your organization is refactoring a monolithic web application into stateless microservices that will run in containers managed by a cloud-native orchestration platform. Management wants the new deployment to add or remove service instances automatically as traffic fluctuates, without manual administrator intervention. Which core capability of container orchestration platforms most directly enables this requirement and aligns with the cloud characteristic of rapid elasticity?
Sharing the underlying host operating system kernel to minimize virtualization overhead
Automatic horizontal scaling of containers based on real-time resource or application metrics
Built-in secret management for injecting credentials at container start-up
Use of overlay networking to decouple container networks from physical hosts
Container orchestration frameworks such as Kubernetes and Amazon Elastic Kubernetes Service include native auto-scaling features (for example, the Horizontal Pod Autoscaler) that monitor metrics like CPU usage or custom application signals and automatically start or terminate additional container replicas to match demand. This on-demand horizontal scaling delivers the rapid elasticity promised by cloud computing. While sharing a host kernel, overlay networking, and secret management are valuable functions, none of them directly provide the capability to grow and shrink the number of running service instances in response to load.
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Concepts, Architecture and Design
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