Data Center Technician Certification Exam 2025\2026
100 questions, answers, and rationales
1. What is the primary purpose of a data center?
A. Residential storage
B. To house IT equipment and support services
C. Manufacturing
D. Retail operations
Rationale: A data center is designed to store, manage, and
disseminate data and IT resources, not for general residential or
retail use.
2. Which of the following is considered a best practice for cable
management?
A. Randomly stacking cables
B. Using labeled and organized cable trays
C. Coiling cables tightly
D. Placing cables on the floor
Rationale: Proper cable management improves airflow, reduces
hazards, and simplifies maintenance.
3. What does UPS stand for in a data center context?
A. Unified Power System
B. Uninterruptible Power Supply
C. Universal Processing System
D. User Power Source
Rationale: UPS provides backup power during outages to
prevent downtime or data loss.
4. Which type of cooling system is most commonly used in modern
data centers?
, A. Evaporative cooling
B. CRAC units (Computer Room Air Conditioning)
C. Window air conditioners
D. Geothermal cooling
Rationale: CRAC units regulate temperature and humidity
specifically for server environments.
5. What is the typical color code for a ground wire?
A. Blue
B. Green or bare copper
C. Red
D. Black
Rationale: Electrical standards designate green or bare copper
for grounding to ensure safety.
6. Which protocol is primarily used for remote server management?
A. FTP
B. HTTP
C. SMTP
D. IPMI (Intelligent Platform Management Interface)
Rationale: IPMI allows administrators to manage servers
remotely, including monitoring, logging, and rebooting.
7. What does PUE stand for in data center efficiency metrics?
A. Power Unit Efficiency
B. Power Usage Effectiveness
C. Performance Under Energy
D. Primary Utility Energy
Rationale: PUE measures how efficiently a data center uses
energy, comparing total facility power to IT equipment power.
8. Which fire suppression agent is preferred in data centers?
A. Water
, B. Foam
C. FM-200 or clean agents
D. Sand
Rationale: Clean agents suppress fire without damaging
sensitive electronic equipment, unlike water or foam.
9. What is the recommended ambient temperature range for a data
center?
A. 10–15°C
B. 15–20°C
C. 18–27°C
D. 30–35°C
Rationale: ASHRAE standards recommend maintaining this
temperature range to balance equipment reliability and energy
efficiency.
10. Which type of RAID provides redundancy and improved
read/write performance?
A. RAID 0
B. RAID 5
C. RAID 10
D. RAID 1
Rationale: RAID 5 uses striping with parity, offering both
redundancy and performance benefits.
11. What is the main purpose of an environmental monitoring
system in a data center?
A. Security access
B. To monitor temperature, humidity, and airflow
C. Energy billing
D. Software updates
100 questions, answers, and rationales
1. What is the primary purpose of a data center?
A. Residential storage
B. To house IT equipment and support services
C. Manufacturing
D. Retail operations
Rationale: A data center is designed to store, manage, and
disseminate data and IT resources, not for general residential or
retail use.
2. Which of the following is considered a best practice for cable
management?
A. Randomly stacking cables
B. Using labeled and organized cable trays
C. Coiling cables tightly
D. Placing cables on the floor
Rationale: Proper cable management improves airflow, reduces
hazards, and simplifies maintenance.
3. What does UPS stand for in a data center context?
A. Unified Power System
B. Uninterruptible Power Supply
C. Universal Processing System
D. User Power Source
Rationale: UPS provides backup power during outages to
prevent downtime or data loss.
4. Which type of cooling system is most commonly used in modern
data centers?
, A. Evaporative cooling
B. CRAC units (Computer Room Air Conditioning)
C. Window air conditioners
D. Geothermal cooling
Rationale: CRAC units regulate temperature and humidity
specifically for server environments.
5. What is the typical color code for a ground wire?
A. Blue
B. Green or bare copper
C. Red
D. Black
Rationale: Electrical standards designate green or bare copper
for grounding to ensure safety.
6. Which protocol is primarily used for remote server management?
A. FTP
B. HTTP
C. SMTP
D. IPMI (Intelligent Platform Management Interface)
Rationale: IPMI allows administrators to manage servers
remotely, including monitoring, logging, and rebooting.
7. What does PUE stand for in data center efficiency metrics?
A. Power Unit Efficiency
B. Power Usage Effectiveness
C. Performance Under Energy
D. Primary Utility Energy
Rationale: PUE measures how efficiently a data center uses
energy, comparing total facility power to IT equipment power.
8. Which fire suppression agent is preferred in data centers?
A. Water
, B. Foam
C. FM-200 or clean agents
D. Sand
Rationale: Clean agents suppress fire without damaging
sensitive electronic equipment, unlike water or foam.
9. What is the recommended ambient temperature range for a data
center?
A. 10–15°C
B. 15–20°C
C. 18–27°C
D. 30–35°C
Rationale: ASHRAE standards recommend maintaining this
temperature range to balance equipment reliability and energy
efficiency.
10. Which type of RAID provides redundancy and improved
read/write performance?
A. RAID 0
B. RAID 5
C. RAID 10
D. RAID 1
Rationale: RAID 5 uses striping with parity, offering both
redundancy and performance benefits.
11. What is the main purpose of an environmental monitoring
system in a data center?
A. Security access
B. To monitor temperature, humidity, and airflow
C. Energy billing
D. Software updates
