Final answer:
A mantrap is a physical security control designed to prevent unauthorized physical access by ensuring that only one person can gain access at a time after verification. It is different from network and application security controls, which focus on digital threats and software flaws respectively.
Step-by-step explanation:
The implementation of a mantrap in the main entrance of a building is an example of a physical security control. A mantrap is a small room with two doors, which allows for strict control of entry into a secure area. This method ensures that only one person at a time can gain access after verification, thereby significantly minimizing the risk of unauthorized access. Mantraps are commonly used in high-security areas like data centers, financial institutions, and research labs to safeguard sensitive information and resources.
Unlike network security controls that protect against digital threats, or application security controls guarding against flaws within software, physical security controls are focused on preventing unauthorized physical access to facilities and hardware. Security measures such as surveillance cameras, alarm systems, and biometric systems are also classified under physical security controls, completing a comprehensive strategy to maintain the security of physical assets.