HVAC CERTIFICATION EXAM 2026 COMPLETE QUESTION BANK

HVAC CERTIFICATION EXAM
2026 – IT, Cybersecurity, Cloud
& Networking
Multiple Choice Questions (1–70)

1. Which protocol is commonly used for communication between smart HVAC devices and
central building management systems?
A) HTTP
B) FTP
C) BACnet ✓
D) SMTP

2. What is the main purpose of HVAC system sensors in a building automation system?
A) To reduce energy consumption ✓
B) To install additional devices
C) To increase duct size
D) To prevent HVAC maintenance

3. Which cybersecurity standard is essential for protecting IoT HVAC devices?
A) ISO 9001
B) ISO/IEC 27001 ✓
C) ISO 14000
D) ISO 45001

4. In networking HVAC devices, what does the term “IP address” refer to?
A) Internet password
B) Internet Protocol address ✓

, C) Internal process code
D) Input port

5. Which cloud service model allows HVAC system data to be accessed on-demand without
owning the underlying infrastructure?
A) IaaS
B) PaaS
C) SaaS ✓
D) DaaS

6. True or False: A firewall is used to prevent unauthorized access to HVAC networked
systems.
✓ True
False

7. Which type of network topology is most resilient for large building HVAC automation?
A) Star
B) Ring ✓
C) Bus
D) Tree

8. What is the main function of a thermostat in a smart HVAC system?
A) To connect to Wi-Fi
B) To regulate temperature ✓
C) To increase airflow
D) To measure humidity only

9. Scenario: A building automation engineer notices unauthorized access attempts to the
HVAC control system. What is the first step they should take?
A) Increase airflow
B) Change system filters
C) Implement network segmentation ✓
D) Adjust the thermostat

10. Which wireless protocol is commonly used for connecting HVAC sensors in a smart
building?
A) Zigbee ✓
B) Bluetooth Classic
C) NFC
D) USB

,11. What type of attack targets smart HVAC systems to cause temperature fluctuations?
A) DDoS attack ✓
B) Phishing attack
C) SQL Injection
D) Man-in-the-middle

12. Which network layer is responsible for IP addressing and routing in HVAC IoT systems?
A) Application
B) Transport
C) Network ✓
D) Data Link

13. True or False: All HVAC systems connected to the internet must implement strong
password policies.
✓ True
False

14. Scenario: The HVAC system shows unusual spikes in energy usage. Which IT tool is best
for diagnosing this?
A) Antivirus software
B) Network monitoring software ✓
C) Word processor
D) Email client

15. Which cloud computing characteristic enables HVAC data to scale based on demand?
A) Elasticity ✓
B) Security
C) Redundancy
D) Encryption

16. What is the primary purpose of BACnet in HVAC systems?
A) To design ductwork
B) To provide a communication protocol for building automation ✓
C) To prevent cybersecurity attacks
D) To measure air quality

17. Which encryption method is recommended for HVAC IoT device communication?
A) MD5
B) AES ✓

, C) DES
D) SHA-1

18. True or False: VLANs can be used to segment HVAC devices from the main corporate
network.
✓ True
False

19. Which device connects multiple HVAC components in a local network?
A) Router
B) Switch ✓
C) Hub
D) Modem

20. Scenario: An engineer needs to access the HVAC system remotely through a secure
channel. Which protocol should they use?
A) HTTP
B) HTTPS ✓
C) FTP
D) Telnet

21. Which protocol is designed specifically for industrial automation, including HVAC
systems?
A) BACnet ✓
B) HTTP
C) SMTP
D) POP3

22. True or False: IoT HVAC devices can be part of a Distributed Denial of Service (DDoS)
botnet if not secured.
✓ True
False

23. Which type of cloud deployment involves resources shared among multiple
organizations?
A) Public cloud ✓
B) Private cloud
C) Hybrid cloud
D) On-premises