Internet of Things (IoT) Practice Exam

What can be a major problem in badly designed closed-loop systems?

1. Scalability

2. Stability

3. Security

4. Usability

The correct answer is: Stability

In the context of closed-loop systems, stability refers to the system's ability to maintain equilibrium and function effectively within its operational parameters. When a closed-loop system is poorly designed, it can lead to instability, which manifests as oscillations or divergent behavior. This instability can prevent the system from reaching a steady state or cause it to respond unpredictably to changes in input or feedback. In closed-loop systems, feedback is crucial for controlling the output based on the difference between the desired outcome and the actual output. If the feedback loop is not properly calibrated or if there are delays in the response time, it can create a scenario where the system overcorrects or fails to correct adequately, leading to erratic performance. This diminishes the effectiveness of the system and can prevent it from achieving its intended goals, thus highlighting why stability is a major concern in poorly designed closed-loop systems. The other options, while important in their own right, do not directly address the primary challenge often encountered in closed-loop systems' designs. Scalability relates to how well the system can grow in capacity or size without losing performance, security pertains to the protection against unauthorized access or attacks, and usability concerns the ease with which users can operate the system. Although these factors can impact a closed