Final answer:
A hard real-time operating system has less jitter than a soft real-time operating system because it guarantees task execution within strict deadlines, reducing variability in response times.
Step-by-step explanation:
A hard real-time operating system (RTOS) has less jitter than a soft real-time operating system. Jitter refers to the variability in a system's response times. In hard real-time systems, tasks are guaranteed to execute within a specific deadline, and thus, they are far less likely than soft real-time systems to experience variations in task execution timing, which would result in jitter. Hard RTOS are designed for applications where time predictability is critical, such as in embedded systems for medical devices, avionics, and automotive controls. On the other hand, soft real-time systems prioritize throughput and are used in applications where it is acceptable for deadlines to be missed occasionally, resulting in slightly higher likelihood of jitter.