ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

Your organization hosts a public REST API on a single virtual machine in one cloud availability zone. Load testing shows CPU saturation during peak usage, and planned reboots cause several minutes of outage. To align with the availability principle of redundancy, which architectural change will most effectively increase service uptime?

  • Schedule daily encrypted snapshots of the virtual machine to remote object storage.

  • Enable host-based firewall rules that rate-limit all incoming requests above a defined threshold.

  • Deploy identical API instances in multiple availability zones behind an auto-scaling load balancer.

  • Upgrade the existing virtual machine to a larger compute class with more CPU and memory.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Concepts
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