Bollards are short vertical posts installed to control or direct road traffic, but more importantly, they act as physical security controls to prevent vehicle-ramming attacks or unauthorized vehicle entry into sensitive or secure areas such as building entrances. They are often reinforced and strategically placed to withstand high- speed collisions.
This is a physical security control described in CEH v13 Module 01 (Introduction to Ethical Hacking) and further discussed in physical security best practices for preventing unauthorized physical access.
Incorrect Options:
B). Receptionist is a human control, not a physical barrier for vehicles.
C). Mantrap is used to control personnel access, not vehicle access.
D). Turnstile controls pedestrian entry, not vehicles.
Reference:
CEH v13 Official Courseware - Module 01: Introduction to Ethical Hacking # Physical Security Controls #
"Vehicle Access Barriers (e.g., bollards, barricades)"