Your company's data center employs a compartmentalized security setup to prevent unauthorized access. As part of this, there is an entry system that allows only one person to enter at a time after authentication, preventing anyone from following behind without proper clearance. What is this mechanism called and what is its primary purpose?
Biometric scanner, to authenticate individuals based on physical characteristics.
Access control vestibule, to prevent unauthorized individuals from tailgating into secured areas.
Locked server rack, to secure servers and network equipment from physical tampering.
Turnstile, to ensure only one individual enters the data center at a time.