The difference between and application of qualitative and quantitative risk assessment tools

Research and write a 15-page paper addressing the following:

The difference between and application of qualitative and quantitative risk assessment tools.
-The use of concentric security approach in access control designs.
-Countermeasures, both technical and procedural, that address the following Insider threats: –Workplace violence and Cyber threats
-Countermeasure selection and reasoning as it pertains to terrorist threats.