WGU D337 OA COMPLETE ACTUAL
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED
A+||BRAND NEW(2026/2027
What is the primary goal of cybersecurity in IoT
systems?
A. Increase sensor speed
B. Protect systems, networks, and data from attacks
C. Improve device manufacturing
D. Reduce internet usage
Correct Answer: B
Rationale: Cybersecurity focuses on protecting
systems, networks, and data from digital threats.
What does edge computing primarily aim to do?
A. Store all data in the cloud
B. Process data closer to IoT devices
,C. Eliminate sensors
D. Replace the internet
Correct Answer: B
Rationale: Edge computing reduces latency by
processing data near the source.
Which IoT wave focused on data collection,
processing, and security?
A. First wave
B. Second wave
C. Third wave
D. Fourth wave
Correct Answer: C
Rationale: The third wave emphasizes analytics and
security of IoT data.
What is the main function of a sensor in IoT?
A. Convert electricity into light
B. Collect data from the physical environment
C. Store blockchain records
D. Encrypt network traffic
,Correct Answer: B
Rationale: Sensors capture real-world data for
processing.
What does an actuator do in IoT systems?
A. Stores data
B. Converts electrical signals into physical actions
C. Encrypts data
D. Sends internet traffic
Correct Answer: B
Rationale: Actuators perform physical actions like
movement or sound.
Which IoT technology provides low-power, long-
range connectivity?
A. Wi-Fi
B. LPWAN
C. Bluetooth
D. NFC
Correct Answer: B
Rationale: LPWAN supports long-range, low-
power communication.
, What is ZigBee mainly used for?
A. High-speed internet
B. Short-range low-power IoT communication
C. Satellite communication
D. Cloud storage
Correct Answer: B
Rationale: ZigBee is optimized for low-power,
short-range IoT networks.
What is the purpose of fog computing?
A. Replace cloud computing
B. Act as an intermediate layer between edge and
cloud
C. Store blockchain data
D. Encrypt IoT devices
Correct Answer: B
Rationale: Fog computing processes data between
edge devices and cloud.
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED
A+||BRAND NEW(2026/2027
What is the primary goal of cybersecurity in IoT
systems?
A. Increase sensor speed
B. Protect systems, networks, and data from attacks
C. Improve device manufacturing
D. Reduce internet usage
Correct Answer: B
Rationale: Cybersecurity focuses on protecting
systems, networks, and data from digital threats.
What does edge computing primarily aim to do?
A. Store all data in the cloud
B. Process data closer to IoT devices
,C. Eliminate sensors
D. Replace the internet
Correct Answer: B
Rationale: Edge computing reduces latency by
processing data near the source.
Which IoT wave focused on data collection,
processing, and security?
A. First wave
B. Second wave
C. Third wave
D. Fourth wave
Correct Answer: C
Rationale: The third wave emphasizes analytics and
security of IoT data.
What is the main function of a sensor in IoT?
A. Convert electricity into light
B. Collect data from the physical environment
C. Store blockchain records
D. Encrypt network traffic
,Correct Answer: B
Rationale: Sensors capture real-world data for
processing.
What does an actuator do in IoT systems?
A. Stores data
B. Converts electrical signals into physical actions
C. Encrypts data
D. Sends internet traffic
Correct Answer: B
Rationale: Actuators perform physical actions like
movement or sound.
Which IoT technology provides low-power, long-
range connectivity?
A. Wi-Fi
B. LPWAN
C. Bluetooth
D. NFC
Correct Answer: B
Rationale: LPWAN supports long-range, low-
power communication.
, What is ZigBee mainly used for?
A. High-speed internet
B. Short-range low-power IoT communication
C. Satellite communication
D. Cloud storage
Correct Answer: B
Rationale: ZigBee is optimized for low-power,
short-range IoT networks.
What is the purpose of fog computing?
A. Replace cloud computing
B. Act as an intermediate layer between edge and
cloud
C. Store blockchain data
D. Encrypt IoT devices
Correct Answer: B
Rationale: Fog computing processes data between
edge devices and cloud.
