Difference among Hard and Soft real-time systems

Question

Explain difference among Hard and Soft real-time systems?

Answer 1

A hard real-time system guarantees that critical tasks finished on time. This goal needs that all delays in the system be restricted from the retrieval of the stored data to the time that this takes the operating system to complete any request made of it.

A soft real time system where a critical real-time task obtains priority over other tasks and retains that priority until it finished. As in hard real time systems kernel delays require to be bounded