Looking for an original answer. This the complete question:

Consider the following scenarios:

1. A ticket management system for handling events/concerts/shows
2. A simulation cockpit used for training pilots
3. A robot floor cleaner that can sense walls and obstructions

Choose one scenario and perform a mini preliminary design review. A PDR is conducted before the start of detailed design work and is the first opportunity for the client to observe the teams software design. A PDR should include the following:

• A graphical representation of the system using UML; the system should identify both external components (users, hardware, sensors, networks) and internal components (software libraries, objects, databases)
• Functional and performance requirements and which modules cover these areas
• A justification for the chosen design solution