EXIN EPI Certified Data Centre Specialist
Last Update Nov 23, 2025
Total Questions : 120
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The 'maximum exposed area' of the fire-rated glass is defined by the supplier as 3 sqm/32 sqft. The window area is 4 sqm/43 sqft.
What would be the best option?
In which stage of the data center life cycle does commissioning take place?
A new network storage device in a non-standard size rack of approximately 600 kg/1,300 lbs is going to be installed in the data center.
Are new floor loading calculations required?
A data center is in an area where utility power is highly available—only a few outages per year, typically <1 hour per event and <50 hours/year not available. What type of generators should be installed?
You are allowed to use a calculator for this question.
A computer room has a net volume of approximately 2,500 m³ / 88,287 ft³.
The temperature is 20 °C / 68 °F.
The required design concentration is 7%.
The S-Factor is 0.1359 (metric) / 1.885 (imperial).
Calculate the amount of gas required for this computer room based on FM200. What is the correct weight?
The UPS of a data center, with an ANSI/TIA-942 Rating-4, is installed with the rectifier connected to power feed A and the bypass/reserve line input connected to power feed B.
To which feed will the output of the UPS be synchronized?
Two servers stacked with no gap (metal-to-metal). What heat transfer occurs?
Do you need to consider bullet (ballistic) protection when designing a data center?
The air intake of the mission-critical server at the top of the rack is measuring 25 °C/77 °F.
Is this acceptable?
What is the floor loading requirement for a Rated-3 data center according to ANSI/TIA-942?
ICT rack consumes 3 kW with ΔT ~11 °C (20 °F). Calculate required airflow (CFM).
You need to determine the strategy for the cooling audit. All the servers are based on a front-to-rear (F-R) airflow design.
Which location for the temperature/humidity measurement should you recommend for the audit?
When designing a data center network, your company wants to minimize the number of network cables to install. What type of physical cabling layout would be the best choice?
What is the effect of having a damper (in open position) construction in a raised-floor tile?
You are allowed to use a calculator for this question. The total power consumption of the ICT equipment in a rack is 6 kW. The equipment is traditional ICT equipment with a Delta-T of approximately 11 °C / 20 °F. Calculate the approximate CFM required to cool the equipment in the rack.
An air-conditioner unit needs to be selected. Two types are available:
Unit-A has a Sensible Heat Ratio (SHR) of 0.7.
Unit-B has a Sensible Heat Ratio (SHR) of 0.9.
From an efficiency point of view, which one should be selected?
You want to manage temperature and humidity only at the facility level in your data center. All servers use front-to-rear airflow. Which location for measurement should you recommend?
What is a potential disadvantage of using water mist as a fire extinguishing system?
Do you need to consider bullet (ballistics) protection when designing a data center?
A computer room with a raised floor has been designed with racks in a hot/cold aisle setup.
What should you recommend for the placement of down-flow air conditioners?
Management requests a 15-minute battery bank at full UPS load. UPS specs:
30 kVA, PF 0.8
Battery 384 V (192 cells), end discharge 308 V
Inverter PF 0.8, 400 V output
What information is missing to perform the calculation?
You are working with a customer who requires a guarantee that THDi levels coming from the UPS should not exceed more than 3% THDi. Furthermore, he wants to run a power-efficient data center. The UPS has a 6-Pulse SCR/Thyristor based rectifier. The current load on the UPS is approximately 80%. The customer indicates they are not expecting any changes on the ICT infrastructure for the next 3 years.
What should you recommend?
The noise levels in the data center are approximately 91 dB (A).
Do employers need to take precautions?
The humidity in the computer room has changed from about 50% down to 35% Relative Humidity (RH).
What influence does this have on Electrostatic Discharge (ESD)?
When designing a data center network, your company wants to minimize the number of network switches to manage.
What type of physical cabling layout would be the best choice?
TESTED 23 Nov 2025
