Kwon is the chief security officer of BCN Corp. and desires to further secure the physical perimeter. What is his BEST option for 24-hour monitoring of the building exterior?

Domain 3 Security Architecture and Engineering Practice Questions
Questions from the following topics are included in this domain:
Research and manage secure design principles
Understand fundamental security models
Select and determine cryptographic solutions
Understand cryptanalytic attacks
Apply security principles to the facility
Design facility security controls