Using the school library and proper APA formatting, write a research paper on the following as they relate to physical security.What are protective barriers and what should they entail? What mitigati

Using the school library and proper APA formatting, write a research paper on the following as they relate to physical security.

1. What are protective barriers and what should they entail?
2. What mitigation procedures can be used to ensure the resiliency of protective barriers?
3. What is the significance of access and corrective controls?
4. Describe and explain some of the hardening methods of entry control.