Question 1

What is the main reason to install Earth Leakage protection?

Options :

A : Protection of ICT equipment against high-frequency noise currents

B : Protection of human lives

C : Improvement of the data center grounding/earthing system

D : Protection against lightning strikes

Answer: B

Question 2

True or False: Fuel availability generally dictates the type of standby generator selected

Options :

A : True

B : False

Answer: A

Question 3

What mainly affects the cooling capacity of a raised floor tile?

Options :

A : Type of ICT equipment, location of the air conditioner, pressure under the raised floor, allowable temperature in the hot aisle

B : Relative humidity in the computer room, temperature of the cold air, pressure under the raised floor, construction material of the tile

C : Percentage of the surface opening, obstruction of the supporting construction, pressure under the raised floor, damper construction

D : Percentage of the surface opening, airflow direction of the ICT equipment, temperature difference between the air intake and air exhaust of the ICT equipment, construction material of the tile

Answer: C

Question 4

The pipes of a VESDA smoke detection system are installed at the air intake of the air conditioner inside the computer room. Is this a good practice from an early smoke detection point of view?

Options :

A : It depends on the type of gas-based fire suppression which will be installed.

B : Yes, as this reduces the amount of piping to be installed in the data center, as all air will go through the air conditioner.

C : No, the piping should be installed at the air exhaust of the air conditioner, as there can also be a fire inside the air conditioner itself.

D : No, it will give a longer reaction time for the smoke detection system and there might also be bypass airflow.

Answer: D

Question 5

What indicates the breaking capacity of a fuse or breaker?

Options :

A : Mechanical strength of the casing of a fuse or breaker.

B : The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle without being destroyed or causing an electric damaging arc.

C : The current at which the device will trip.

D : The current that a fuse or breaker is able to interrupt without being destroyed or causing an electric damaging arc.

Answer: D

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