RCDD Data Center and Equipment Room Design 3

Question 1

Which room in a data center telecommunications infrastructure serves as the main cross-connect for the entire facility?

Accepted Answer

The Main Distribution Area (MDA)

Answer

The Main Distribution Area (MDA) is the central distribution point in a data center that houses the main cross-connect, providing connectivity to all other distribution areas.

Question 2

What is the maximum horizontal cabling distance from the HDA to an EDA equipment port in a TIA-942 structured cabling design?

Accepted Answer

30 m (100 ft)

Answer

TIA-942 allows a maximum 30-meter horizontal cabling distance from the Horizontal Distribution Area to equipment ports in the Equipment Distribution Area for structured cabling.

Question 3

What is the purpose of environmental monitoring in a data center and which parameters are typically monitored?

Accepted Answer

To track temperature, humidity, water leaks, and airflow to prevent equipment damage and optimize cooling efficiency

Answer

Data center environmental monitoring tracks temperature, humidity, airflow, and water/leak detection across the facility to alert staff of conditions that could cause equipment failure before damage occurs.

Question 4

In data center design, what does 'concurrent maintainability' mean?

Accepted Answer

Any single component can be maintained, repaired, or replaced while the facility continues operating at full capacity

Answer

Concurrent maintainability means the data center can undergo planned maintenance on any single component—infrastructure, UPS, cooling, etc.—while continuing to operate at full load without disruption.

Question 5

What is the recommended method for bringing outside telecommunications cables into a data center to comply with TIA-942 security requirements?

Accepted Answer

Through a demarcation zone with primary protectors, physical separation from internal cabling, and access controls at the entry point

Answer

TIA-942 requires outside plant cables to terminate in a controlled demarcation zone with surge protection, physical isolation from internal systems, and secured entry to prevent unauthorized access paths.

RCDD - Registered Communications Distribution Designer Practice Test

RCDD - Registered Communications Distribution Designer Practice Test

RCDD Data Center and Equipment Room Design 3