Which model is the oldest and most common technique of differentiating information systems?
information system model
strategic decision model
pyramid model
hierarchical model

The answer to this question is Pyramid model. In pyramid mode, all information systems will be divided into different classes that will form a hierarchy and usually it is based on importance. The most important aspects will be placed on the top of the pyramid structure while the least important aspects will be placed on the very bottom.

Why im i -98 points? ! this app is rigged

Ithink the answer is both.