Data Center Operations and Maintenance Flashcards
7 cards from real CDCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Center Operations and Maintenance flashcards as text
A data center technician is performing a generator load bank test. What is the primary purpose of this test?
Answer: Confirm the generator can sustain rated load and temperature under simulated conditions
Load bank testing confirms the generator can handle its rated capacity without overheating or failing, validating readiness for a real outage.
Which condition would trigger an automatic transfer switch (ATS) to transfer load from utility to generator power?
Answer: Utility voltage drops below the configured threshold for the programmed time delay
An ATS automatically transfers when utility voltage (or frequency) deviates beyond set thresholds for a defined time delay, initiating generator startup and load transfer.
What does 'Mean Time Between Failures' (MTBF) measure in the context of data center equipment maintenance?
Answer: The predicted average operating time between failures for a component
MTBF is a reliability metric representing the average expected operating time between failures, used to plan preventive maintenance schedules.
A data center operations team discovers condensation forming on server intakes in one zone. Which is the MOST likely root cause?
Answer: Supply air temperature is below the dew point of the room air
Condensation occurs when supply air temperature drops below the dew point of the ambient air, indicating the cooling setpoint is too cold.
In DCIM software, which function directly supports capacity planning for power infrastructure?
Answer: Monitoring real-time power draw per rack and projecting future headroom
DCIM tracks per-rack power consumption and compares it to available capacity, enabling accurate forecasting of when infrastructure limits will be reached.
Which standard provides guidance on data center environmental monitoring thresholds including temperature and humidity?
Answer: ASHRAE TC 9.9
ASHRAE TC 9.9 publishes thermal guidelines and environmental envelope recommendations for data center equipment and facilities.
A 'two-man rule' in data center operations requires that critical tasks be performed with two trained personnel present. What is its primary purpose?
Answer: Prevent accidental or unauthorized actions on critical infrastructure
The two-man rule prevents unauthorized or inadvertent actions on critical systems by requiring a second qualified person to witness and verify each step.