Question 1

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

Question 2

A new facility requires electrical distribution of 100A to be installed in the computer room, 1 m (3 ft) above sensitive IT equipment. What type of system minimizes EMF impact?

Options :

A : Install single-phase power cabling

B : Install three-phase power cabling based on three individual core wires

C : Install bus bar trunking

D : Install three-phase power cabling based on a combined cable (e.g., XLPE)

Answer: D

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

A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in architectural. What is the overall Rating of this data center when the Rating is based on the ANSI/TIA-942?

Options :

A : Rated-2 since that is the lowest rating received

B : Rated-4 since that is the highest rating received

C : Rated-4 since electrical is more important than mechanical and architectural

D : Depends on the Rating scored in telecommunications

Answer: A

Question 5

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

Answer: D

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