Certified Cloud Security Professional (CCSP) Practice Exam

What occurs when more users are connected to a system than can be fully supported simultaneously?

1. Hybrid cloud

2. Multi-tenancy

3. Oversubscription

4. DNSSEC implementation

The correct answer is: Oversubscription

The situation described occurs when more users attempt to access a system than the system can handle at the same time. Oversubscription is a common practice in computing and networking, where resources (such as bandwidth, server capacity, or storage) are allocated in a way that exceeds the actual capacity, anticipating that not all users will demand maximum resource usage simultaneously. This strategy can optimize resource utilization and reduce costs, but it can lead to performance issues if demand exceeds expectations. In this context, understanding oversubscription is crucial for effectively managing cloud resources, ensuring that they can handle peak loads without significant degradation in service quality. It aligns with cloud principles where resources are dynamically allocated based on demand. It’s essential for cloud security professionals to recognize the implications of oversubscription, especially regarding potential vulnerabilities when too many users access the system concurrently. The other options, such as hybrid cloud and multi-tenancy, pertain to different cloud deployment models and resource sharing strategies rather than the specific issue of user capacity. DNSSEC implementation focuses on securing domain name system (DNS) information, which does not relate to system capacity or user loads.