What is a common effect of effective scheduling in a system?

Effective scheduling in a system primarily leads to improved efficiency, which is crucial for enhancing overall system performance. When scheduling is done accurately, resources such as CPU time, memory, and I/O are allocated optimally among various processes. This ensures that tasks are completed in a timely manner, reduces idle time, and maximizes the utilization of system resources.

For example, in a multi-tasking environment, an effective scheduler will prioritize processes based on their requirements and system capacity, allowing high-priority tasks to access resources without unnecessary delays. By optimizing how tasks are queued and executed, systems can perform more operations in a given timeframe, handle more users simultaneously, and generally operate at higher throughput levels.

In contrast, other choices focus on consequences that are generally not associated with effective scheduling. Increased latency would imply that tasks are taking longer to complete due to poor scheduling. Higher memory usage typically results from inefficient processes and doesn’t directly relate to the effectiveness of scheduling. Similarly, reduced task complexity isn't a direct outcome of scheduling; rather, it can be influenced by how tasks are designed or how they interact with one another. Therefore, the most accurate effect of effective scheduling is undoubtedly improved efficiency.