BICSI Data Center Design Consultant DCDC
Certification TEST STUDY GUIDE 2025/2026
QUESTIONS BANK AND CORRECT DETAILED ANSWERS
WITH RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. Data Center - ANSWER ✓ Facility for computer systems,
telecommunications, and storage.
2. Tier I - ANSWER ✓ Basic data center with non-redundant components.
3. Tier II - ANSWER ✓ Data center with redundant capacity components.
4. Tier III - ANSWER ✓ Data center with concurrently maintainable
infrastructure.
5. Tier IV - ANSWER ✓ Data center with fault-tolerant infrastructure.
6. PUE - ANSWER ✓ Power Usage Effectiveness metric for data center
energy efficiency.
7. White Space - ANSWER ✓ Area in a data center for IT equipment like
server racks.
8. Gray Space - ANSWER ✓ Area in a data center for supporting
infrastructure.
9. Resiliency - ANSWER ✓ Data center's ability to operate during failures.
10.Redundancy - ANSWER ✓ Backup systems ensuring continuous operation.
11.Scalability - ANSWER ✓ Ability to expand data center to meet demands.
,12.TIA-942 - ANSWER ✓ Telecom infrastructure standard for data centers.
13.UPS - ANSWER ✓ Uninterruptible Power Supply for emergency power.
14.Grounding - ANSWER ✓ Prevents shocks and ensures system reliability.
15.Power Distribution Unit - ANSWER ✓ Device distributing power to servers
and networking.
16.ATS - ANSWER ✓ Automatic Transfer Switch for power source switching.
17.Single-Line Diagram - ANSWER ✓ Representation of a three-phase power
system.
18.Load Balancing - ANSWER ✓ Evenly distributing electrical load for
efficiency.
19.what is the most common energy storage solution
and what are the two types - ANSWER ✓ lead-acid battery
vented and valve regulated
20.when has a lead-acid battery reached the end of life - ANSWER ✓ when it
cannot deliver more than 80% of its rated capacity
21.what is the maximum recommended elevation for a data center - ANSWER
✓ 10,000 ft
22.define monitoring - ANSWER ✓ monitoring is defined as the telemetry and
ability to view what is going on
in some cases integrates and manages alarms
23.what additional fuel filtering is required for generators in class F3 and F4
facilities - ANSWER ✓ three stage, spin-on-type fuel filters
100, 30, 10 micron
with individual valves for removal while the engine is operating
,24.regarding generator fuel filtering systems, describe recommended grade -
ANSWER ✓ marine grade is recommended for all installations but
mandatory for class F3 and F4 facilities
25.describe fuel filtering for class F1 and F2 facilities - ANSWER ✓ single
stage spin-on-type fuel filters
100, 30 micron
with individual valves for removal while the engine is operating
26.What is the primary purpose of commissioning in data center design? -
ANSWER ✓ To ensure all systems are designed, installed, tested, operated,
and maintained according to the owner's operational requirements.
27.What are the phases of the commissioning process? - ANSWER ✓ Planning,
Design, Construction, Acceptance, and Post-Acceptance.
28.What does the commissioning plan document? - ANSWER ✓ The scope,
schedule, resources, and procedures for the commissioning process.
29.What role does the commissioning authority (CxA) play? - ANSWER ✓
They lead, plan, coordinate, and document the commissioning process.
30.Why is a commissioning team important? - ANSWER ✓ To bring together
diverse expertise needed for a comprehensive and effective commissioning
process.
31.What should be included in the commissioning specifications? - ANSWER
✓ Detailed requirements for system verification and performance testing.
32.During which phase is the commissioning plan developed? - ANSWER ✓
The planning phase.
33.: What is the main focus during the design phase of commissioning? -
ANSWER ✓ Verifying that design documents meet the owner's
requirements.
, 34.Why is the construction phase critical in commissioning? - ANSWER ✓ : It
involves verifying and documenting that installations meet design
specifications.
35.What type of tests are performed during the acceptance phase? - ANSWER
✓ Functional performance tests and system integration tests.
36.What is the purpose of the post-acceptance phase? - ANSWER ✓ To ensure
systems are operating efficiently over time and meet performance
requirements.
37.What factors are critical in data center site selection? - ANSWER ✓
Proximity to utilities, natural disaster risk, accessibility, and regulatory
compliance.
38.Why is proximity to utilities important for site selection? - ANSWER ✓ : To
ensure reliable power and communication infrastructure.
39.What is a key consideration regarding natural disasters in site selection? -
ANSWER ✓ Selecting a location with minimal risk of earthquakes, floods,
or hurricanes.
40.How does regulatory compliance affect site selection? - ANSWER ✓
Ensuring the site meets local zoning, environmental, and building codes.
41.What is the purpose of space planning in data centers? - ANSWER ✓ To
efficiently organize physical space for equipment, operations, and future
expansion.
42.What is hot aisle/cold aisle configuration? - ANSWER ✓ An arrangement
that enhances cooling efficiency by separating hot and cold airflows.
43.Why is scalability important in space planning? - ANSWER ✓ : To
accommodate future growth without major disruptions.
44.What should be considered in floor load capacity? - ANSWER ✓ Ensuring
the floor can support the weight of all equipment and racks.
Certification TEST STUDY GUIDE 2025/2026
QUESTIONS BANK AND CORRECT DETAILED ANSWERS
WITH RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. Data Center - ANSWER ✓ Facility for computer systems,
telecommunications, and storage.
2. Tier I - ANSWER ✓ Basic data center with non-redundant components.
3. Tier II - ANSWER ✓ Data center with redundant capacity components.
4. Tier III - ANSWER ✓ Data center with concurrently maintainable
infrastructure.
5. Tier IV - ANSWER ✓ Data center with fault-tolerant infrastructure.
6. PUE - ANSWER ✓ Power Usage Effectiveness metric for data center
energy efficiency.
7. White Space - ANSWER ✓ Area in a data center for IT equipment like
server racks.
8. Gray Space - ANSWER ✓ Area in a data center for supporting
infrastructure.
9. Resiliency - ANSWER ✓ Data center's ability to operate during failures.
10.Redundancy - ANSWER ✓ Backup systems ensuring continuous operation.
11.Scalability - ANSWER ✓ Ability to expand data center to meet demands.
,12.TIA-942 - ANSWER ✓ Telecom infrastructure standard for data centers.
13.UPS - ANSWER ✓ Uninterruptible Power Supply for emergency power.
14.Grounding - ANSWER ✓ Prevents shocks and ensures system reliability.
15.Power Distribution Unit - ANSWER ✓ Device distributing power to servers
and networking.
16.ATS - ANSWER ✓ Automatic Transfer Switch for power source switching.
17.Single-Line Diagram - ANSWER ✓ Representation of a three-phase power
system.
18.Load Balancing - ANSWER ✓ Evenly distributing electrical load for
efficiency.
19.what is the most common energy storage solution
and what are the two types - ANSWER ✓ lead-acid battery
vented and valve regulated
20.when has a lead-acid battery reached the end of life - ANSWER ✓ when it
cannot deliver more than 80% of its rated capacity
21.what is the maximum recommended elevation for a data center - ANSWER
✓ 10,000 ft
22.define monitoring - ANSWER ✓ monitoring is defined as the telemetry and
ability to view what is going on
in some cases integrates and manages alarms
23.what additional fuel filtering is required for generators in class F3 and F4
facilities - ANSWER ✓ three stage, spin-on-type fuel filters
100, 30, 10 micron
with individual valves for removal while the engine is operating
,24.regarding generator fuel filtering systems, describe recommended grade -
ANSWER ✓ marine grade is recommended for all installations but
mandatory for class F3 and F4 facilities
25.describe fuel filtering for class F1 and F2 facilities - ANSWER ✓ single
stage spin-on-type fuel filters
100, 30 micron
with individual valves for removal while the engine is operating
26.What is the primary purpose of commissioning in data center design? -
ANSWER ✓ To ensure all systems are designed, installed, tested, operated,
and maintained according to the owner's operational requirements.
27.What are the phases of the commissioning process? - ANSWER ✓ Planning,
Design, Construction, Acceptance, and Post-Acceptance.
28.What does the commissioning plan document? - ANSWER ✓ The scope,
schedule, resources, and procedures for the commissioning process.
29.What role does the commissioning authority (CxA) play? - ANSWER ✓
They lead, plan, coordinate, and document the commissioning process.
30.Why is a commissioning team important? - ANSWER ✓ To bring together
diverse expertise needed for a comprehensive and effective commissioning
process.
31.What should be included in the commissioning specifications? - ANSWER
✓ Detailed requirements for system verification and performance testing.
32.During which phase is the commissioning plan developed? - ANSWER ✓
The planning phase.
33.: What is the main focus during the design phase of commissioning? -
ANSWER ✓ Verifying that design documents meet the owner's
requirements.
, 34.Why is the construction phase critical in commissioning? - ANSWER ✓ : It
involves verifying and documenting that installations meet design
specifications.
35.What type of tests are performed during the acceptance phase? - ANSWER
✓ Functional performance tests and system integration tests.
36.What is the purpose of the post-acceptance phase? - ANSWER ✓ To ensure
systems are operating efficiently over time and meet performance
requirements.
37.What factors are critical in data center site selection? - ANSWER ✓
Proximity to utilities, natural disaster risk, accessibility, and regulatory
compliance.
38.Why is proximity to utilities important for site selection? - ANSWER ✓ : To
ensure reliable power and communication infrastructure.
39.What is a key consideration regarding natural disasters in site selection? -
ANSWER ✓ Selecting a location with minimal risk of earthquakes, floods,
or hurricanes.
40.How does regulatory compliance affect site selection? - ANSWER ✓
Ensuring the site meets local zoning, environmental, and building codes.
41.What is the purpose of space planning in data centers? - ANSWER ✓ To
efficiently organize physical space for equipment, operations, and future
expansion.
42.What is hot aisle/cold aisle configuration? - ANSWER ✓ An arrangement
that enhances cooling efficiency by separating hot and cold airflows.
43.Why is scalability important in space planning? - ANSWER ✓ : To
accommodate future growth without major disruptions.
44.What should be considered in floor load capacity? - ANSWER ✓ Ensuring
the floor can support the weight of all equipment and racks.
