Certified TIA-942 Design Consultant (CTDC)
Certification Exam – Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary focus of the TIA-942 standard?
A. Cabling system design
B. Data center infrastructure and topology
C. Telecommunications room layouts
D. Power generation standards
The TIA-942 standard specifies data center design elements—
space, power, cooling, and redundancy.
2. Which of the following best describes a Tier III data center?
A. No redundancy
B. Concurrently maintainable infrastructure
C. Fault tolerant
D. Single-path distribution
Tier III allows maintenance without downtime using dual-path or
redundant systems.
3. What is the recommended maximum temperature for IT
equipment inlet per ASHRAE guidelines?
A. 18 °C
B. 20 °C
C. 27 °C
D. 32 °C
, ASHRAE recommends 18–27 °C inlet air temperature range for
optimal performance.
4. In TIA-942, the minimum raised floor height for cabling and
airflow management is typically:
A. 100 mm
B. 150 mm
C. 300 mm
D. 600 mm
300 mm allows adequate air plenum and cable separation
underfloor.
5. Which electrical redundancy configuration supports “N + 1”?
A. Two fully independent paths
B. One active plus one standby module
C. One path only
D. 2N system
N + 1 adds one backup for each critical component, ensuring
uptime if one fails.
6. The cold aisle containment strategy primarily aims to:
A. Reduce sound levels
B. Prevent mixing of hot and cold air streams
C. Increase humidity
D. Improve lighting uniformity
Containment separates airflows, increasing cooling efficiency.
7. Which of the following systems ensures power continuity during
outages?
A. HVAC
B. PDU
Certification Exam – Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary focus of the TIA-942 standard?
A. Cabling system design
B. Data center infrastructure and topology
C. Telecommunications room layouts
D. Power generation standards
The TIA-942 standard specifies data center design elements—
space, power, cooling, and redundancy.
2. Which of the following best describes a Tier III data center?
A. No redundancy
B. Concurrently maintainable infrastructure
C. Fault tolerant
D. Single-path distribution
Tier III allows maintenance without downtime using dual-path or
redundant systems.
3. What is the recommended maximum temperature for IT
equipment inlet per ASHRAE guidelines?
A. 18 °C
B. 20 °C
C. 27 °C
D. 32 °C
, ASHRAE recommends 18–27 °C inlet air temperature range for
optimal performance.
4. In TIA-942, the minimum raised floor height for cabling and
airflow management is typically:
A. 100 mm
B. 150 mm
C. 300 mm
D. 600 mm
300 mm allows adequate air plenum and cable separation
underfloor.
5. Which electrical redundancy configuration supports “N + 1”?
A. Two fully independent paths
B. One active plus one standby module
C. One path only
D. 2N system
N + 1 adds one backup for each critical component, ensuring
uptime if one fails.
6. The cold aisle containment strategy primarily aims to:
A. Reduce sound levels
B. Prevent mixing of hot and cold air streams
C. Increase humidity
D. Improve lighting uniformity
Containment separates airflows, increasing cooling efficiency.
7. Which of the following systems ensures power continuity during
outages?
A. HVAC
B. PDU
