CDCP General 4

Question 1

What is the recommended inlet temperature range for most data center server equipment according to ASHRAE A1 class guidelines?

Accepted Answer

64–80°F (18–27°C)

Answer

ASHRAE A1 class equipment specifies an allowable inlet temperature range of 59–77°F (15–25°C), with the recommended range slightly wider at 64–80°F.

Question 2

Which fire suppression system is most commonly used in active data center rooms due to its equipment-safe characteristics?

Accepted Answer

Clean agent gaseous suppression system

Answer

Clean agent systems (such as FM-200 or Novec 1230) suppress fires without water damage to sensitive electronic equipment.

Question 3

What is 'stranded power' in a data center context?

Accepted Answer

Power allocated to a rack but not actually consumed by installed equipment

Answer

Stranded power refers to power capacity allocated (reserved) on paper for equipment that never consumes its rated maximum, reducing effective capacity.

Question 4

In data center cabling, what does an MDA (Main Distribution Area) connect to?

Accepted Answer

Horizontal Distribution Areas (HDA) or Equipment Distribution Areas (EDA)

Answer

Per ANSI/TIA-942, the MDA is the core of the data center cabling infrastructure, connecting to HDAs and sometimes directly to EDAs.

Question 5

What is the main purpose of raised floor plenum space in a traditional data center?

Accepted Answer

Distribution of chilled air to equipment inlets

Answer

Raised floor plenums act as a pressurized cold air chamber that distributes cooling air through perforated tiles to equipment cold aisles.

CDCP - Certified Data Centre Professional Practice Test

CDCP - Certified Data Centre Professional Practice Test

CDCP General 4