When reading code top-down, we try to use our expectations about the application domain to predict what the major functional components of the code...

When reading code top-down, we try to use our expectations about theapplication domain to predict what the major functional components of thecode will be. Imagine that you have been asked to fix some errors in thesoftware that controls a security system at a chemical plant. Describe anythree major functional components that you would expect to be present insuch a system, and give some examples of the kinds of functionality thatwould be provided by each component.