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Difficulty: MediumPhysical Security Controls and Environmental Measures

A network infrastructure team is deploying an edge micro data center enclosure on an active manufacturing floor to process real-time telemetry. Due to high physical traffic, ambient dust, and unauthorized personnel in the vicinity, the team must implement appropriate physical security access controls and environmental protection measures for the enclosure. Which TWO of the following controls should be deployed to address these specific access and environmental threats?

  1. Install smartcard badge readers with PIN keypads on the enclosure doors and configure positive air pressure system within the cabinetAnswer
  2. Deploy environmental monitoring sensors that trigger alerts if enclosure ambient temperature or humidity breaches defined thresholdsAnswer
  3. C
    Use a optical time-domain reflectometer (OTDR) at the enclosure entrance to detect physical perimeter breaches
  4. D
    Reconfigure network access control lists (ACLs) on the top-of-rack switches to block unauthorized IP addresses from connecting to the server interfaces
  5. E
    Downgrade the SNMP monitoring software to SNMPv2c to prevent high CPU utilization on environmental sensor microcontrollers

Answer

The two correct measures are installing smartcard badge readers with PIN keypads alongside a positive pressure HVAC/air filtration system, and deploying environmental monitoring sensors for temperature and humidity tracking.
Implementing smartcard badge readers with PIN keypads establishes multi-factor physical authentication to prevent unauthorized physical access on the factory floor, while positive air pressure prevents dust and particulates from entering the cabinet. In addition, environmental monitoring sensors provide essential real-time monitoring of cabinet temperature and humidity levels to protect delicate network hardware from environmental stress.

Step-by-Step Solution

1
Analyze the physical access requirements of the scenario.
Identified the need to prevent unauthorized physical opening of the edge enclosure on a high-traffic manufacturing floor.
Combining smartcard badges with PIN keypads establishes multifactor physical authentication, ensuring only authorized technicians can open cabinet doors.
2
Analyze the environmental threat requirements.
Identified dust contamination and ambient heat/humidity risks present on an active manufacturing plant floor.
Positive pressure HVAC prevents dust ingress by forcing clean air outward whenever cabinet seals flex, and internal environmental sensors ensure real-time alerting for temperature and humidity anomalies.
3
Evaluate and eliminate incorrect logical security tools and misapplied hardware testing utilities.
Discarded OTDR usage for perimeter security, IP ACLs for physical security, and insecure SNMPv2c protocol downgrades.
Physical security controls must directly address physical touch, access doors, particulate protection, and thermal monitoring rather than logical network layer rules or fiber diagnostic tools.

Key Concept

Physical Access Control and Environmental Protection Measures
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Topics

Physical Security Controls and Environmental Measures

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