BICSI DCDC-002 DATA CENTRE DESIGN CONSULTANT
PRACTICE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2025/2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which of the following is a primary consideration when designing a data centre's power
distribution system?
A. Server brand
B. Redundancy level
C. Carpet color
D. Employee work schedules
*Correct answer: B. Redundancy level – Data centres require reliable power; redundancy
ensures continuous operation in case of failure.
2. What does the “TIER” classification of a data centre indicate?
A. Internet speed
B. Level of availability and fault tolerance
C. Number of employees
D. Server CPU types
*Correct answer: B. Level of availability and fault tolerance – TIER levels (I-IV) describe the data
centre's infrastructure reliability and uptime.
3. Which cooling method is commonly used in high-density server rooms?
A. Natural ventilation
B. Hot aisle/cold aisle containment
C. Ceiling fans
D. Space heaters
*Correct answer: B. Hot aisle/cold aisle containment – This method improves cooling efficiency
by separating hot and cold air streams.
4. What is the recommended practice for structured cabling in a data centre?
A. Random cable placement
B. Following ANSI/TIA-942 or BICSI standards
C. Using the shortest cable possible only
D. Mixing copper and fiber randomly
,*Correct answer: B. Following ANSI/TIA-942 or BICSI standards – Standards ensure performance,
scalability, and easier maintenance.
5. Which of the following is a common redundancy configuration for uninterruptible power
supplies (UPS) in a data centre?
A. 1+0
B. 2N
C. 1+1
D. All of the above
*Correct answer: D. All of the above – These are typical UPS redundancy schemes depending on
required availability.
6. What does PUE (Power Usage Effectiveness) measure?
A. CPU performance
B. Energy efficiency of a data centre
C. Number of servers
D. Internet bandwidth
*Correct answer: B. Energy efficiency of a data centre – PUE = Total facility power ÷ IT
equipment power; lower PUE indicates higher efficiency.
7. Which fire suppression system is preferred in a data centre environment?
A. Water sprinklers
B. FM-200 or clean agent systems
C. Open flame
D. Sand
*Correct answer: B. FM-200 or clean agent systems – These suppress fires without damaging
electronic equipment.
8. When designing a data centre for high availability, which redundancy level is considered
“fault-tolerant”?
A. N
B. N+1
C. 2N
D. 1+0
*Correct answer: C. 2N – A 2N system has complete duplication of critical components, ensuring
continuous operation during failures.
9. Which factor most influences server rack layout for optimal airflow?
A. Color of server cases
B. Hot aisle/cold aisle alignment
, C. Employee convenience
D. Proximity to office desks
*Correct answer: B. Hot aisle/cold aisle alignment – Proper alignment maximizes cooling
efficiency and prevents hotspots.
10. What is the recommended minimum floor loading capacity for a raised data centre floor?
A. 25 psf
B. 50 psf
C. 100 psf
D. 500 psf
*Correct answer: C. 100 psf – Supports heavy server racks and infrastructure safely.
11. Which of the following is considered a Tier IV data centre feature?
A. Single path power and cooling
B. Multiple independent distribution paths for power and cooling
C. No backup generator
D. Only manual monitoring
*Correct answer: B. Multiple independent distribution paths for power and cooling – This
ensures the highest level of fault tolerance and uptime.
12. Which is a best practice for grounding and bonding in data centres?
A. Ground only the power panels
B. Use a single-point, well-documented grounding system
C. Avoid grounding to save costs
D. Use random metal connections
*Correct answer: B. Use a single-point, well-documented grounding system – This ensures
safety and minimizes electrical interference.
13. What is the main purpose of a raised floor in a data centre?
A. Aesthetic appeal
B. Air distribution and cable management
C. Staff seating
D. Storage of office supplies
*Correct answer: B. Air distribution and cable management – Raised floors allow efficient
cooling and organized cabling.
14. Which of the following environmental monitoring systems is critical in a data centre?
A. Temperature, humidity, and water leak detection
B. Employee check-in system
C. Cafeteria menu tracker
PRACTICE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2025/2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which of the following is a primary consideration when designing a data centre's power
distribution system?
A. Server brand
B. Redundancy level
C. Carpet color
D. Employee work schedules
*Correct answer: B. Redundancy level – Data centres require reliable power; redundancy
ensures continuous operation in case of failure.
2. What does the “TIER” classification of a data centre indicate?
A. Internet speed
B. Level of availability and fault tolerance
C. Number of employees
D. Server CPU types
*Correct answer: B. Level of availability and fault tolerance – TIER levels (I-IV) describe the data
centre's infrastructure reliability and uptime.
3. Which cooling method is commonly used in high-density server rooms?
A. Natural ventilation
B. Hot aisle/cold aisle containment
C. Ceiling fans
D. Space heaters
*Correct answer: B. Hot aisle/cold aisle containment – This method improves cooling efficiency
by separating hot and cold air streams.
4. What is the recommended practice for structured cabling in a data centre?
A. Random cable placement
B. Following ANSI/TIA-942 or BICSI standards
C. Using the shortest cable possible only
D. Mixing copper and fiber randomly
,*Correct answer: B. Following ANSI/TIA-942 or BICSI standards – Standards ensure performance,
scalability, and easier maintenance.
5. Which of the following is a common redundancy configuration for uninterruptible power
supplies (UPS) in a data centre?
A. 1+0
B. 2N
C. 1+1
D. All of the above
*Correct answer: D. All of the above – These are typical UPS redundancy schemes depending on
required availability.
6. What does PUE (Power Usage Effectiveness) measure?
A. CPU performance
B. Energy efficiency of a data centre
C. Number of servers
D. Internet bandwidth
*Correct answer: B. Energy efficiency of a data centre – PUE = Total facility power ÷ IT
equipment power; lower PUE indicates higher efficiency.
7. Which fire suppression system is preferred in a data centre environment?
A. Water sprinklers
B. FM-200 or clean agent systems
C. Open flame
D. Sand
*Correct answer: B. FM-200 or clean agent systems – These suppress fires without damaging
electronic equipment.
8. When designing a data centre for high availability, which redundancy level is considered
“fault-tolerant”?
A. N
B. N+1
C. 2N
D. 1+0
*Correct answer: C. 2N – A 2N system has complete duplication of critical components, ensuring
continuous operation during failures.
9. Which factor most influences server rack layout for optimal airflow?
A. Color of server cases
B. Hot aisle/cold aisle alignment
, C. Employee convenience
D. Proximity to office desks
*Correct answer: B. Hot aisle/cold aisle alignment – Proper alignment maximizes cooling
efficiency and prevents hotspots.
10. What is the recommended minimum floor loading capacity for a raised data centre floor?
A. 25 psf
B. 50 psf
C. 100 psf
D. 500 psf
*Correct answer: C. 100 psf – Supports heavy server racks and infrastructure safely.
11. Which of the following is considered a Tier IV data centre feature?
A. Single path power and cooling
B. Multiple independent distribution paths for power and cooling
C. No backup generator
D. Only manual monitoring
*Correct answer: B. Multiple independent distribution paths for power and cooling – This
ensures the highest level of fault tolerance and uptime.
12. Which is a best practice for grounding and bonding in data centres?
A. Ground only the power panels
B. Use a single-point, well-documented grounding system
C. Avoid grounding to save costs
D. Use random metal connections
*Correct answer: B. Use a single-point, well-documented grounding system – This ensures
safety and minimizes electrical interference.
13. What is the main purpose of a raised floor in a data centre?
A. Aesthetic appeal
B. Air distribution and cable management
C. Staff seating
D. Storage of office supplies
*Correct answer: B. Air distribution and cable management – Raised floors allow efficient
cooling and organized cabling.
14. Which of the following environmental monitoring systems is critical in a data centre?
A. Temperature, humidity, and water leak detection
B. Employee check-in system
C. Cafeteria menu tracker
