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Question

Difficulty: MediumPhysical Security Controls and Environmental Measures

A network administrator is retrofitting an unmonitored Intermediate Distribution Frame (IDF) closet located directly beneath an active plumbing line in a satellite office. Facilities management raised concerns regarding potential unauthorized physical opening of the network enclosures during off-hours cleaning, as well as the risk of water condensation or plumbing leaks causing hardware damage.

Which TWO of the following physical and environmental controls should the network administrator deploy to directly mitigate these specific threats?

  1. Chassis intrusion sensors integrated with automated alerting systemsAnswer
  2. Spot or rope liquid detection sensors placed beneath the pipe route and rack baseAnswer
  3. C
    Faraday cage shielding surrounding the wiring closet racks
  4. D
    Total-flooding clean-agent gaseous fire suppression systems
  5. E
    Hot and cold aisle containment baffles

Answer

The administrator should deploy chassis intrusion sensors to detect unauthorized cabinet access and liquid detection sensors to monitor for water leaks or condensation.
Deploying chassis intrusion sensors directly addresses unauthorized physical opening of network rack enclosures by generating security alerts when cabinet doors are opened. Deploying liquid detection sensors beneath overhead plumbing routes and near rack bases provides early warning of water leaks or moisture accumulation before physical equipment damage occurs.

Step-by-Step Solution

1
Analyze the physical security threat in the scenario
Identified threat: Unauthorized opening or physical tampering of network equipment enclosures during off-hours.
Chassis intrusion switches/sensors monitor cabinet doors and send instant notifications if opened without permission.
2
Analyze the environmental threat in the scenario
Identified threat: Water condensation or liquid intrusion from overhead plumbing.
Liquid detection rope or spot sensors installed near overhead pipes or cabinet drip pans alert administrators immediately upon contact with conductive fluid.
3
Evaluate and eliminate non-matching security controls
Faraday cages, clean-agent suppression systems, and aisle containment address electromagnetic interference, fire suppression, and airflow management respectively, not physical intrusion or pipe leakage.
Controls must directly align with the specific threat vectors described in the scenario.

Key Concept

Physical Security Controls and Environmental Measures
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Topics

Physical Security Controls and Environmental Measures

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