CDCP Data Center Design Principles 2

Question 1

The Uptime Institute's Tier IV data center classification requires what minimum percentage of concurrent maintainability?

Accepted Answer

All paths and components are fully redundant with fault tolerance (2N or better)

Answer

N+1 redundancy on all mechanical and electrical systems

Answer

2N redundancy on power only; N+1 on cooling

Answer

Dual power feeds with single cooling path

Question 2

In data center design, what is the significance of a 'point of delivery' (POD) architecture?

Accepted Answer

It modularizes the data center into self-contained, repeatable units that can be deployed incrementally as capacity grows

Answer

It defines the location where utility power enters the building

Answer

It identifies the physical point where internet connectivity terminates inside the facility

Answer

It sets the boundary between the data center operator's responsibility and the colocation customer's responsibility

Question 3

Which standard provides guidance specifically for data center telecommunications infrastructure design?

Accepted Answer

TIA-942

Answer

ASHRAE TC 9.9

Answer

IEC 62443

Answer

ISO/IEC 27001

Question 4

What is 'white space' in data center terminology?

Accepted Answer

The raised-floor area where IT equipment (servers, storage, networking) is located

Answer

Unused rack space available for future equipment installation

Answer

The gap between hot and cold aisles in a containment system

Answer

Network bandwidth capacity that has not been allocated to customers

Question 5

When designing a data center, what is the primary purpose of the 'main distribution area' (MDA)?

Accepted Answer

It is the core cabling hub where horizontal cabling from zone and equipment areas terminates, housing main cross-connects

Answer

It is the zone where power enters the building from the utility provider

Answer

It is a dedicated space for network operations center (NOC) staff

Answer

It is the area where backup generators are connected to the building switchgear

Question 6

What is the advantage of a 10-raised-floor tile (approximately 30-inch) raised floor height versus a 12-inch raised floor in a data center?

Accepted Answer

A taller plenum reduces under-floor air velocity, allowing better airflow distribution and accommodating more power and data cabling

Answer

A taller raised floor provides more structural load-bearing capacity for heavy equipment

Answer

A taller raised floor eliminates the need for perforated tiles entirely

Answer

A taller raised floor is required by code for Tier III and above data centers