Free CDCP-001 sample questions

Correct answers: Implement a dehumidification cycle or dedicated dehumidifiers.; Ensure the data hall is properly sealed to prevent outside air infiltration.

Correct answer: True

This statement is true. A double-interlock pre-action system is designed for maximum protection against accidental water discharge. It requires two separate events to trigger: the fire detection system must activate, which opens the pre-action valve, AND a sprinkler head must fuse due to heat, which allows air pressure in the pipes to drop. Only when both conditions are met will water be released.

Correct answer: 1.67

Power Usage Effectiveness (PUE) is calculated by dividing the total facility power by the IT equipment power. In this case, PUE = 500 kW / 300 kW = 1.67. A PUE of 1.0 would represent a perfectly efficient data center where all power is used by the IT equipment.

Correct answer: Direct-to-chip liquid cooling.

For rack densities exceeding 20-30 kW, traditional air cooling methods become inefficient and often ineffective. Direct-to-chip liquid cooling brings a liquid coolant directly to the hottest components (like CPUs and GPUs), providing highly efficient and targeted heat removal. While adding more CRACs or improving containment helps with lower densities, they cannot effectively handle the concentrated heat load of such high-density racks.

Correct answer: 100 meters

The TIA standards (including TIA-568 which is referenced by TIA-942) specify a maximum channel length of 100 meters for twisted-pair copper cabling. This total length includes up to 90 meters of horizontal (permanent) cable and a combined total of 10 meters for patch cords and equipment cords at both ends.

Correct answer: Class D

Fire classifications categorize fires based on the type of fuel involved. Class D fires are those that involve combustible metals. Class A is for ordinary combustibles (wood, paper), Class B is for flammable liquids, and Class C is for energized electrical equipment.

Correct answer: N+1

This configuration is described as N+1. 'N' represents the number of modules required to support the load (in this case, 2). The '+1' indicates there is one additional, independent module for redundancy. Therefore, 2+1 = 3 modules in total. 2N redundancy would mean having a completely separate, mirrored system (4 modules in this case).

Correct answer: Increased risk of Electrostatic Discharge (ESD)

When relative humidity is too low, the air becomes a poor conductor of electricity, allowing static charges to build up easily. This significantly increases the risk of Electrostatic Discharge (ESD) events, which can damage sensitive electronic components. Condensation occurs when humidity is too high and the air temperature drops below the dew point.

Correct answer: Installing seismic-rated racks with appropriate bracing to the building structure.

In seismically active zones, the most critical factor is to secure equipment to prevent it from moving or toppling during an earthquake. This is achieved by using seismic-rated racks and cabinets that are securely bolted to the structural slab and/or braced to the overhead building structure. While floor loading and raised floor design are important, the direct bracing of racks is the primary defense against seismic damage to the IT infrastructure.

Correct answer: Aqua

Industry standards (TIA-598-C) define a color code for fiber optic cable jackets to easily identify the type of fiber inside. For laser-optimized multi-mode fiber, OM3 and OM4 cables typically use an aqua-colored outer jacket. Orange is used for OM1/OM2, and yellow is used for single-mode fiber.