Let's take a deeper look at these components to help you better evaluate their effectiveness.
The command and management portion also includes ICS (Incident Control System). This is a general outline of how the entire disaster incident should be managed throughout its entirety. Command and management may also include multi-agency systems, which consist of co-coordinating with federal, state, local, and tribe agencies to help manage and respond to the disaster as well as informing the public.
Preparedness is something that is done year-round to prepare for a disaster. This consists of proper training for service individuals (think EMS training, for example), ensuring that qualifications and certifications are maintained and achieved. This would also include insuring that equipment is properly maintained.
Resource management includes keeping an inventory of resources (i.e., tools, vehicles, supplies, etc.), which would be necessary in a disaster, as well as how effectively they can be dispatched.
Communications and information management refers to ensuring a standard for communication between everyone involved in managing the disaster.
Ongoing Management and Maintenance refers to consistently monitoring and assessing NIMS to see how it can be improved.
In order to give your opinion on their effectiveness, you might think of some natural disasters and ask yourself questions about how they were handled: was there a timely and efficient response? Was communication with the public handled well? Did the responders have access to the required equipment and resources to help?