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CDCS Practice Questions

EXIN EPI Certified Data Centre Specialist

Last Update 3 days ago
Total Questions : 120

Dive into our fully updated and stable CDCS practice test platform, featuring all the latest EPI Data Centre exam questions added this week. Our preparation tool is more than just a Exin study aid; it's a strategic advantage.

Our free EPI Data Centre practice questions crafted to reflect the domains and difficulty of the actual exam. The detailed rationales explain the 'why' behind each answer, reinforcing key concepts about CDCS. Use this test to pinpoint which areas you need to focus your study on.

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Question # 21

Management has requested a 15-minute battery bank assuming full load on the UPS. The UPS vendor has provided the following specifications of the UPS:

•Rated power: 30 kVA

•Rectifier input voltage: 400 V/3 phase

•Rectifier input power factor: 0.8

•Battery rated voltage: 384 V

•Number of cells: 192

•End of discharge voltage: 308 V

•Inverter output voltage: 400 V/3 phase

•Inverter output power factor: 0.8

What information is missing to perform the battery calculation?

Options:

A.  

UPS efficiency

B.  

Inverter efficiency

C.  

Load imbalance on the phases

D.  

Available battery charging current

Discussion 0
Question # 22

From the options indicated, what is the correct starting point for the raised floor installation?

Question # 22

Options:

A.  

Point A

B.  

Point B

C.  

Point C

D.  

Point D

Discussion 0
Question # 23

Should aerosol cleaning solutions be used in the computer room?

Options:

A.  

No, unless leak detection installed

B.  

No, it will contaminate the room

C.  

Yes, only if room smells bad

D.  

Yes, if not connected to power

Discussion 0
Question # 24

The data center has been in operation for about 1 year and 2 months. The dust levels in the computer room are relatively high.

What is the most likely root cause?

Options:

A.  

The cleaning crew is not doing their work properly

B.  

Every computer room has high dust levels due to constant high-speed air movement

C.  

Low pressure in the computer room

D.  

Floorboards are most likely not fitted correctly

Discussion 0
Question # 25

In order to save energy, you are going to install an automated system to switch off lights. What should be taken into consideration when installing such a system?

Options:

A.  

Security guards should perform regular inspections verifying the system works.

B.  

The system should not be based on motion detection as the lights might suddenly switch off while staff is still at work.

C.  

It is not advisable to use such a system since it will reduce the lifetime of LED lighting.

D.  

At all times, the levels should allow for security cameras to function properly.

Discussion 0
Question # 26

The building requires sprinklers and is equipped with a wet-pipe system. What action should you recommend for the computer room?

Options:

A.  

Maintain the current wet-pipe system

B.  

Replace the wet-pipe system with a deluge system

C.  

Replace the wet-pipe system with a pre-action system

D.  

Replace the wet-pipe system with a dry-pipe system

Discussion 0
Question # 27

The logical overview of the data center looks as pictured. To what TIA-942 Rating is this design made based on electrical only?

Question # 27

Options:

A.  

Rating - 4

B.  

Rating - 3

C.  

Rating - 2

D.  

Rating - 1

Discussion 0
Question # 28

What is needed to determine the Relative Humidity (RH)?

Options:

A.  

Wet bulb temperature, local atmospheric pressure, and calculator

B.  

Dry bulb temperature, airflow, and conversion table

C.  

Cold surface with dew collection counter

D.  

Dry bulb temperature, wet bulb temperature, and psychrometric chart

Discussion 0
Question # 29

What is the risk of high levels of hydrogen sulfide (H₂S) in the computer room?

Options:

A.  

There is no risk

B.  

H₂S impacts the static properties of the floor

C.  

H₂S can cause corrosion which impacts reliability of equipment

D.  

H₂S impacts gas-based fire suppression system operation

Discussion 0
Question # 30

You need to install a highly sensitive fire detection system. The data center has a high airflow rate. Which system should you recommend?

Options:

A.  

Dry pipe sprinkler system

B.  

Ionization smoke detector

C.  

Photoelectric smoke detector

D.  

VIEW (Very Early Warning) smoke detector

Discussion 0
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