CDCP General 5

Question 1

What is the primary purpose of a static transfer switch (STS) in a data center power infrastructure?

Accepted Answer

To switch a load between two independent power sources with minimal interruption

Answer

An STS automatically transfers a load between two independent power feeds in less than a quarter cycle, ensuring high availability.

Question 2

Which data center design principle does 'concurrent maintainability' describe?

Accepted Answer

The ability to perform planned maintenance without shutting down the IT load

Answer

Concurrent maintainability means any component can be serviced, repaired, or replaced while the facility continues to support its full IT load.

Question 3

In data center power distribution, what does a 'dual-corded' server configuration provide?

Accepted Answer

Two independent power paths from separate circuits to the same server

Answer

Dual-corded servers connect to two independent power circuits or PDUs, eliminating a single point of failure at the server level.

Question 4

What environmental monitoring parameter is most critical for detecting water-related risks in a data center?

Accepted Answer

Leak detection sensors

Answer

Leak detection sensors placed under raised floors and near cooling equipment provide early warning of water leaks before equipment damage occurs.

Question 5

What is the function of a Power Distribution Unit (PDU) in a data center rack?

Accepted Answer

To distribute power from a central source to multiple individual devices within a rack

Answer

A rack PDU receives power from a branch circuit and distributes it through multiple outlets to servers and equipment within the rack.

CDCP - Certified Data Centre Professional Practice Test