CDCP - Certified Data Centre Professional Data Center Design Principles Questions and Answers

Question 1

A data center cooling system is designed to operate at full capacity using two identical chiller units. To improve reliability, the facility has installed a total of three identical units. What is the redundancy level of this cooling system?

Accepted Answer

N+1

Answer

N represents the necessary number of components required for operation, which is 2 chillers. The system has one additional component for redundancy (+1). Therefore, the redundancy level is N+1.

Question 2

Which fire suppression system is specifically designed to minimize the risk of accidental water damage in a data center by requiring two independent events to occur—such as a smoke detector alarm and the separate thermal activation of a sprinkler head—before releasing water?

Accepted Answer

Pre-Action Sprinkler System

Answer

A pre-action sprinkler system employs a two-step activation process. First, a fire detection system (e.g., smoke or heat detectors) must activate, which opens a valve allowing water into the pipes. Water is only discharged when a specific sprinkler head is then activated by heat, providing a safeguard against accidental discharge from a leak or damaged sprinkler head.

Question 3

During the site selection process for a new, mission-critical data center, which of the following is considered a primary geographic risk that should be avoided?

Accepted Answer

Location within a designated 100-year floodplain

Answer

Building a data center in a floodplain presents a significant risk of catastrophic damage and prolonged outages due to flooding, which is directly counter to the requirements of a mission-critical facility. The other options are logistical or business considerations, not direct environmental threats to the facility's existence.

Question 4

What is the primary purpose of specifying both a Uniformly Distributed Load (UDL) and a Concentrated Load rating for a data center's raised floor system?

Accepted Answer

To account for the floor's overall weight capacity versus its ability to support a heavy point load, like a rack caster.

Answer

The UDL rating defines the maximum weight the floor can support when spread evenly across a large area. The Concentrated Load rating is critical for data centers as it specifies the floor's ability to handle intense weight in a very small area, such as under the leveling feet or casters of a fully-populated server cabinet.

Question 5

In a layered physical security model for a data center, which of the following controls is most characteristic of the 'Room Layer' that protects the data hall (white space) itself?

Accepted Answer

A mantrap entrance with biometric authentication.

Answer

The 'Room Layer' is the critical boundary immediately surrounding the data hall. A mantrap with biometric controls provides highly stringent access control at this specific point, ensuring only authorized individuals can enter the critical space after they have already passed through outer security layers like the perimeter and building lobby.

CDCP - Certified Data Centre Professional Practice Test

CDCP - Certified Data Centre Professional Practice Test

CDCP - Certified Data Centre Professional Data Center Design Principles Questions and Answers