CDCP MCQ 3

Question 1

Which type of UPS topology provides the highest level of power protection by always running the load through the inverter?

Accepted Answer

Double-conversion (online) UPS

Answer

Double-conversion UPS continuously converts AC to DC and back to AC, completely isolating the load from utility power anomalies.

Question 2

What is the purpose of a raised floor in a traditional data centre?

Accepted Answer

To distribute conditioned air to equipment through perforated tiles

Answer

Raised floors create a plenum space through which cooled air is distributed and delivered upward through perforated floor tiles.

Question 3

In the context of data centre power distribution, what does PDU stand for?

Accepted Answer

Power Distribution Unit

Answer

A PDU (Power Distribution Unit) distributes electrical power from a source to multiple IT equipment loads within a rack or room.

Question 4

Which fire suppression system is most commonly preferred in data centres due to minimal equipment damage?

Accepted Answer

Clean agent gaseous suppression (e.g., FM-200)

Answer

Clean agent systems suppress fire using gases like FM-200 or Novec 1230 that leave no residue and don't damage sensitive electronics.

Question 5

What metric measures the proportion of water used for cooling that is actually evaporated into the atmosphere?

Accepted Answer

WUE (Water Usage Effectiveness)

Answer

WUE (Water Usage Effectiveness) = Annual Site Water Usage ÷ IT Equipment Energy, measuring how much water is consumed per unit of IT work.

CDCP - Certified Data Centre Professional Practice Test