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EXIN EPI Certified Data Centre Specialist Question and Answers

EXIN EPI Certified Data Centre Specialist

Last Update Mar 25, 2025
Total Questions : 60

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Questions 1

It is assumed that EMF shielding material must be installed as the EMF levels coming from the transformer room into the computer room are measured at 100mG. The transformer room is approximately 10 meters away from the computer room and is separated by a corridor. You can assume that no physical issues are present for installing shielding material at any area/location.

Where should you recommend the shielding material to be installed?

Options:

A.  

As close as possible to the computer room

B.  

As close as possible to the transformer room

C.  

It does not matter, either close to the transformer room or the computer room is okay as there is no impact to cost or shielding material performance

D.  

Shielding is not required to be installed as 100mG is within the acceptable levels for computer rooms

Discussion 0
Questions 2

In which stage of the data center life cycle does commissioning take place?

Options:

A.  

Retire

B.  

Operate/optimize

C.  

Implement

D.  

Design

Discussion 0
Questions 3

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)?

Options:

A.  

No influence as long as the temperature is at approximately 20°C/77°F

B.  

Relative humidity has no influence on ESD

C.  

ESD levels will go up

D.  

ESD levels will go down

Discussion 0
Questions 4

Do you need to consider blast protection when designing a data center?

Options:

A.  

No, there is no reason for implementing blast protection as nobody can predict the impact of a bomb explosion.

B.  

Yes, if the data center is a potential target or the building is located within the vicinity of (close by) a potential target.

C.  

No, blast protection is not a requirement of ANSI/TIA-942.

D.  

Yes, blast protection is a requirement of ANSI/TIA-942.

Discussion 0
Questions 5

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?

Options:

A.  

Approximately 410 kg / 900 lbs

B.  

Approximately 820 kg / 1,800 lbs

C.  

Approximately 1,390 kg / 3,000 lbs

D.  

Approximately 1,640 kg / 3,600 lbs

Discussion 0
Questions 6

You are installing new copper cabling.

What is the advantage or disadvantage of choosing pre-terminated category 6 or 6A cabling?

Options:

A.  

Pre-terminated cabling is already factory tested and saves installation time.

B.  

There is no advantage as most new copper cabling network designs are based on category 3 or 5E for horizontal cabling.

C.  

Pre-terminated cabling has a higher fire rating.

D.  

Pre-terminated cabling makes ordering of the copper cables more complex, as you need to know in advance on which side the male or female connector needs to be located.

Discussion 0
Questions 7

The temperature in the computer room is being increased from 18°C/64°F to 27°C/81°F.

What is the impact, if any, on the amount of gas required to suppress a fire assuming the gas is a Halocarbon?

Options:

A.  

The amount of gas required will be higher

B.  

The amount of gas required will not change

C.  

The amount of gas required will be lower

D.  

The change to the amount of gas cannot be determined without knowing the change in humidity as well

Discussion 0
Questions 8

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

Options:

A.  

Point A

B.  

Point B

C.  

Point C

D.  

Point D

Discussion 0
Questions 9

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
Questions 10

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?

Options:

A.  

It does not matter, as the Sensible Heat Ratio has nothing to do with efficiency.

B.  

Not relevant, as Sensible Heat Ratio is only specified for air-conditioner equipment to indicate the ratio between intake temperature and exhaust temperature.

C.  

Unit A

D.  

Unit B

Discussion 0
Questions 11

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?

Options:

A.  

At the back/rear of the server at 50 mm/2 inch

B.  

At 1.5 meters/5 feet above the floor in the middle of the cold aisle

C.  

At the front/intake of the server at 50 mm/2 inch

D.  

At 1.5 meters/5 feet above the floor in the middle of the hot aisle

Discussion 0
Questions 12

What precaution shall be taken for cabling leading into an equipment rack when a data center is in a seismic-prone area?

Options:

A.  

Cables should be loosely organized to allow for movement and be latched at the connectors.

B.  

Cables shall be tightly organized to the rack and trays to avoid movement.

C.  

Cables can be organized in any way as it is not important.

D.  

Cables should be replaced by busbar trunking.

Discussion 0
Questions 13

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?

Options:

A.  

No, as long as the equipment is less than 700 kg/1,500 lbs it will be within the limits.

B.  

No, specifications of equipment brought into the data center will already be known during the design of the data center, and therefore the floor will be able to handle it.

C.  

Yes, additional floor loading calculations need to be done by the floor manager, which should be verified by the safety engineer.

D.  

Yes, a structural engineer, approved/endorsed by the building owner, should carry out new floor loading calculations.

Discussion 0
Questions 14

What is the main disadvantage of using a ToR (Top of Rack) design?

Options:

A.  

A single ToR (Top of Rack) switch is more expensive than an EoR (End of Row) switch.

B.  

You need a separate rack to install all your ToR (Top of Rack) switches.

C.  

There will be more switches to manage.

D.  

A ToR (Top of Rack) switch has only optical interfaces.

Discussion 0
Questions 15

The electrical diagram of the data center shows the following UPS configuration and has a load of 80 kW.

What is the set-up in this data center?

Options:

A.  

2+N+1

B.  

2(N+1)

C.  

N+N(+1)

D.  

(N+1)-(N+1)

Discussion 0
Questions 16

When shielding material reaches its saturation point, what will be the impact?

Options:

A.  

The shielding material will reach its optimal shielding performance state.

B.  

The shielding material will no longer be able to attenuate (reduce) additional EMF.

C.  

The shielding material will increase its permeability factor.

D.  

The shielding material will reach its maximum electrically charged state.

Discussion 0
Questions 17

What is a significant difference between a halocarbon gas-based fire suppression system and an inert gas-based fire suppression system?

Options:

A.  

Inert gas has smaller-sized gas containers than halocarbon gas.

B.  

Inert gas harms the environment and halocarbon gas does not.

C.  

Halocarbon gas works on the basis of heat removal and inert gas works on the basis of oxygen reduction.

D.  

Halocarbon gas works on the basis of oxygen reduction and inert gas works on the basis of heat removal.

Discussion 0
Questions 18

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

Options:

A.  

Rating - 4

B.  

Rating - 3

C.  

Rating - 2

D.  

Rating - 1

Discussion 0