Free Certified Wireless IoT Solutions Administrator Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Certified Wireless IoT Solutions Administrator practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1Which frequency band does Bluetooth Low Energy use for radio communication?

   1. A. The 900 MHz ISM band
   2. B. The 2.4 GHz ISM band
   3. C. The 5 GHz WLAN band
   4. D. The 6 GHz WLAN band

   Answer: B

   Explanation: The Bluetooth SIG specifies "2.4GHz" as the Bluetooth LE operating band. The other bands are not the operating band of this radio.

   Reference: Bluetooth Technology Overview — Bluetooth Classic and Bluetooth LE comparison table, Frequency Band row

2. 2Which RF wave property measures the number of complete oscillations per second?

   1. A. Amplitude
   2. B. Frequency
   3. C. Wavelength
   4. D. Phase

   Answer: B

   Explanation: NIOSH states, "Cycles per second, or Hertz (Hz), is the measure of frequency." Amplitude measures wave magnitude, wavelength measures spatial repetition, and phase identifies position within a cycle.

   Reference: NIOSH — Basic Wireless Communication and Electronic Tracking Tutorial — Section 2.1, wave characteristics

3. 3A wireless industrial control application must respond within a fixed deadline. Which requirement should be specified to evaluate whether the communications path can support it?

   1. A. The average daily telemetry volume
   2. B. The maximum supported device count
   3. C. The maximum acceptable communication latency
   4. D. The historical-data retention period

   Answer: C

   Explanation: NIST links the need to "reduce communication latency and perform necessary control actions on time." A fixed response deadline therefore requires a maximum acceptable latency. Daily volume, device count, and retention duration specify other requirements, not the control-response timing limit.

   Reference: NIST SP 800-82 Revision 3 — Guide to Operational Technology Security — Section 2.3.1, Control timing requirements, p. 11

4. 4Why should a network-monitoring solution establish a baseline of normal industrial IoT traffic?

   1. A. To treat previously observed traffic as automatic access authorization
   2. B. To suppress all traffic changes without examining their meaning
   3. C. To distinguish unusual behavior from normal communications
   4. D. To replace analysis of context with the volume of alerts alone

   Answer: C

   Explanation: NIST lists "Baselining typical network traffic, data flows, and device-to-device communications". A normal-state reference supports anomaly assessment; it does not authorize traffic, make every change malicious, or replace contextual analysis with alert counts.

   Reference: NIST SP 800-82 Revision 3 — Guide to Operational Technology Security — Section 6.3.2.1, Network Monitoring, pp. 129–130

5. 5A hospital adds wireless monitoring devices near existing non-medical radios. Which statement should guide administration under FDA guidance?

   1. A. Device approval alone guarantees reliable coexistence in every installation.
   2. B. Successful association alone demonstrates acceptable medical-device service quality.
   3. C. Nearby wireless transmissions can affect medical-device performance.
   4. D. Digital modulation eliminates the need to consider electromagnetic compatibility.

   Answer: C

   Explanation: FDA warns that crowded spectrum "could impact the performance of RF wireless medical devices." Coexistence and service quality need assessment; approval, association, and digital modulation do not establish reliable operation in the local RF environment.

   Reference: FDA — Wireless Medical Devices — Information for Health Care Facilities: Risk Management

6. 6Which application is identified as a primary use of Bluetooth Classic?

   1. A. Long-range cellular backhaul
   2. B. Satellite telemetry collection
   3. C. Wireless audio streaming
   4. D. Metropolitan microwave transport

   Answer: C

   Explanation: The SIG identifies "wireless audio streaming" as a main use of Bluetooth Classic. Confusing a personal-device radio with wide-area transport leads to the other choices.

   Reference: Bluetooth Technology Overview — Bluetooth Classic

7. 7For RF waves traveling in the same medium at the same propagation speed, what happens to wavelength when frequency increases?

   1. A. Wavelength increases.
   2. B. Wavelength stays constant.
   3. C. Wavelength follows amplitude instead.
   4. D. Wavelength decreases.

   Answer: D

   Explanation: NIOSH explains, "Low frequency waves have longer wavelengths while high frequency waves have shorter wavelengths." At unchanged propagation speed, frequency and wavelength vary inversely.

   Reference: NIOSH — Basic Wireless Communication and Electronic Tracking Tutorial — Section 2.1, frequency and wavelength

8. 8A wireless monitoring service must continue operating when one communication path fails. Which planning response directly addresses this availability requirement?

   1. A. Provide a redundant communication path.
   2. B. Increase the bandwidth of the existing path.
   3. C. Increase the transmit power on the existing path.
   4. D. Shorten the polling interval over the existing path.

   Answer: A

   Explanation: NIST links availability to "more redundancy or alternate implementations across all communications and controls." An alternate path supports continuity after a path failure; changes to speed, power, or polling on the failed path do not supply a surviving path.

   Reference: NIST SP 800-82 Revision 3 — Guide to Operational Technology Security — Section 2.3.1, Availability, p. 12

9. 9Logs from several IoT gateways show inconsistent event ordering because their internal clocks differ. Which integration measure supports reliable cross-device event correlation?

   1. A. Synchronize the devices to a shared primary clock.
   2. B. Use server arrival order as the original event order.
   3. C. Increase polling frequency without correcting the clocks.
   4. D. Compare local sequence numbers as a shared time base.

   Answer: A

   Explanation: NIST states, "The internal clocks of each device should be synchronized with a primary clock to support event correlation between devices." Arrival order may differ from occurrence order; polling rate and independent sequence numbers do not correct the devices' clock offsets.

   Reference: NIST SP 800-82 Revision 3 — Guide to Operational Technology Security — Section 6.2.6.1, Logging, p. 118

10. 10In a manufacturing wireless control system, a proposed security control would prevent an operator from performing a necessary safety action. How should this impact be evaluated?

    1. A. Accept it because security features always take priority over safety.
    2. B. Reject that impairment and seek a control compatible with safety.
    3. C. Accept it if the control produces a more detailed audit log.
    4. D. Treat the safety impact as irrelevant to network administration.

    Answer: B

    Explanation: NIST states, "Any security measure that impairs safety is unacceptable." A manufacturing control must preserve necessary safety actions; stronger logging or a security label does not justify blocking them.

    Reference: NIST SP 800-82 Revision 3 — Guide to Operational Technology Security — p. 29, Risk management requirements bullet under Comparing OT and IT System Security