Which type of security measure is primarily designed to impede unauthorized access at an FSL II facility?

The primary purpose of locks and simple physical barriers is to create a first line of defense against unauthorized access, particularly in a secure environment like an FSL II facility. Locks provide a direct means of restricting entry, ensuring that only authorized personnel can gain access to sensitive areas, while barriers, such as fences or gates, delineate secure zones and deter intruders.

While armed guards and electronic access control also serve to impede unauthorized access, their presence often depends on the human element and technology, which may not provide the immediate physical deterrence that locks and barriers do. Similarly, video monitoring and CCTV systems play a crucial role in surveillance and deterrence but do not physically prevent access. Vehicle barriers and exterior lighting enhance security but focus more on controlling vehicle access and improving visibility rather than directly impeding unauthorized entry on foot.

In summary, locks and simple physical barriers effectively hinder unauthorized access through straightforward, physical means, making them ideal for this context.