someone help me please

A (20) For each of the following systems list the applicable structural and control style(s) of system architecture covered in class (e.g., repository, client-server, three-tier client server, abstract machine model, centralized, event-driven) Justify your answers a (An electronic chess companion), b (An airplane flight simulator for a video game), c (A floppy disk controller chip), d (A sonar system) B (80) In a situational awareness system officers such as police officer or fire fighter, have access to a wireless computer that enables them to interact with a correspondent. The correspondent can in turn visualize the current status of all its resources, such as police cars or trucks and call a resource by issuing commands from a workstation. Use case name: Report Emergency Participating Actors: Initiated by the officer and communicates with correspondent Flow of Events 1. The officer activates the "Report Emergency" function of her terminal 2. System responds by presenting a form to the officer 3. The officer fills the form by selecting the emergency level, type, location, and brief description of the situation. The officer also describes possible responses to the emergency situation. Once the form is completed, the field officer submits the form 4. System receives the form and notifies the 5. The correspondent reviews the submitted information and creates an incident in 6. The system displays the acknowledgement and the correspondent the database. The correspondent selects a response and acknowledges the report. selected response to the officer. Precondition: The officer is logged into the system Postcondition: The officer has received an acknowledgement and the selected response from the correspondent, OR the officer has received an explanation indicating why the transaction could not be processed