Which of the following must be used by the vendor to protect doors that provide...

 According to the PCI Card Production and Provisioning Physical Security Requirements, the vendor must use magnetic contacts that are permanently alarmed and that are connected to the security control-room panels to protect doors that provide access to buildings containing air conditioning equipment. The vendor must also ensure that the air conditioning equipment is located in a secure area that is not accessible to unauthorized personnel, and that the air conditioning system is monitored and maintained to prevent unauthorized access or tampering. The vendor must also have procedures to respond to any alarms or incidents related to the air conditioning system, and to report them to the relevant parties. The vendor must not use security tape, electrical contacts, or physical locks alone, as these may not provide adequate protection or detection of unauthorized access or tampering. References: PCI Card Production and Provisioning Physical Security Requirements and Test Procedures v3.0, January 2022, pages 21-221