Network Defense Essentials (NDE) Practice Exam

What type of physical security control did Smith implement at the organization entrance?

1. Turnstiles

2. Security guard

3. Access control panel

4. Metal detectors

The correct answer is: Turnstiles

The implementation of turnstiles at the organization entrance serves as a highly effective physical security control by managing entry and exit points. Turnstiles restrict access to only authorized individuals, ensuring that only those who are permitted can enter the premises. This method not only prevents unauthorized access but also helps monitor and track the flow of individuals entering the building. Additionally, turnstiles often allow for a smooth flow of traffic while also providing a barrier that requires the user to take a specific action, such as swiping an access card, before gaining entry. This mechanism enhances security by creating a physical barrier that must be negotiated, which reduces the likelihood of tailgating or unauthorized entries. In contrast, while security guards provide surveillance and enforcement of access control protocols, they can be less reliable than automated systems like turnstiles in consistently managing large crowds or responding to potential breaches. Access control panels, while essential for controlling entry, rely on personnel to use them effectively and may not deter those who attempt to bypass them. Metal detectors serve a different purpose, focusing primarily on identifying contraband rather than controlling access points in a manner that restricts unauthorized individuals from entering.