CDCP Data Center Operations and Maintenance 2

Question 1

Which preventive maintenance activity is critical for UPS systems in a data center?

Accepted Answer

Replacing batteries on a scheduled cycle based on manufacturer recommendations

Answer

UPS batteries degrade over time; following manufacturer replacement schedules (typically 3–5 years) ensures the UPS can support full load during a power event.

Question 2

What is the primary function of a Computer Room Air Handler (CRAH) unit in a data center?

Accepted Answer

To circulate chilled water through coils and blow cooled air into the data center

Answer

CRAH units use chilled water supplied by a central chiller plant to cool a refrigerant coil, and fans blow air across the coil to deliver conditioned air to the data center floor.

Question 3

In incident management, what is the first step after detecting an unplanned outage in a data center?

Accepted Answer

Declare and escalate the incident per the incident response plan

Answer

The first step is to formally declare the incident and escalate it according to the incident response plan, ensuring the right teams are engaged and communication begins promptly.

Question 4

What does MTTR stand for in data center reliability metrics?

Accepted Answer

Mean Time to Repair

Answer

MTTR (Mean Time to Repair) measures the average time required to restore a failed component or system to full operational status, reflecting operational efficiency.

Question 5

What is the purpose of a 'two-person integrity' (TPI) rule in data center operations?

Accepted Answer

To ensure that critical tasks are never performed by a single individual, reducing errors and insider threats

Answer

The two-person integrity rule requires that sensitive or high-risk tasks be performed or witnessed by two authorized individuals, mitigating human error and insider risk.

CDCP - Certified Data Centre Professional Practice Test

CDCP - Certified Data Centre Professional Practice Test

CDCP Data Center Operations and Maintenance 2