CWNP CWIDP-402 Certification Exam Sample Questions and Answers

Before you write the CWNP Wi-Fi IoT Design Professional (CWIDP-402) certification exam, you may have certain doubts in your mind regarding the pattern of the test, the types of questions asked in it, the difficulty level of the questions and time required to complete the questions. These CWNP Certified Wireless IoT Design Professional (CWIDP) sample questions and demo exam help you in removing these doubts and prepare you to take the test.

The best approach to pass your CWNP CWIDP-402 exam is to challenge and improve your knowledge. To test your learning and identify improvement areas with actual exam format, we suggest you practice with Premium CWNP CWIDP-402 Certification Practice Exam. The practice test is one of the most important elements of your CWNP Wireless IoT Design Professional (CWIDP) exam study strategy to discover your strengths and weaknesses, to improve your time management skills and to get an idea of the score you can expect.

CWNP CWIDP-402 (CWIDP) Sample Questions:

01. In a brewery packaging hall, one cluster of vibration sensors stops reporting for several minutes every time the adjacent shrink-wrap tunnel runs a heat cycle, then rejoins on its own. Received levels at those nodes are comfortable and unchanged throughout, and no other cluster in the hall is affected.

Which corrective action addresses the cause rather than the symptom?

a) Shorten the reporting interval so a lost reading is replaced sooner

b) Add a relay between the cluster and its gateway to shorten each hop

c) Use a spectrum analyser during a cycle then blocklist the affected channels

d) Raise the transmit power of the affected nodes so they stay above the disturbance

02. An open-pit mine wants haul-truck and personnel tracking across the benches. The designer has modelled coverage from the survey terrain model, using path-loss assumptions taken from a previous flat-site deployment because no comparable pit data exists. The client is ready to sign off on the strength of the resulting map and wants to go straight to installation.

What should the design report carry so that the map’s standing is not overstated?

a) A statement that the map is indicative, with the survey deferred to post-installation validation, when the terrain can be walked

b) The attenuation values and antenna patterns the model was given, their source, and a continuous-wave test to check them before the build

c) The measured ambient noise from the assessment of the existing site, in place of the modelled figures

d) A second heat map at a lower confidence threshold, to bracket the result for the reader

03. Structural vibration sensing is planned for a road bridge with no mains supply at any sensor position. Small photovoltaic panels can be fitted at each node. The register already asks for a reading every 30 seconds and ten years of service without a site visit.

How should the energy requirement be written?

a) Battery capacity sized for ten years at the chosen interval, with harvesting as headroom, not as budgeted energy

b) Reporting interval recorded as a business requirement and power as a technical constraint, reconciled at validation

c) Reporting interval, energy cost per report and harvested energy in the worst month, stated together as one budget

d) Duty cycle left to the supplier, since only the supplier knows what the radio draws in each state

04. Tag reading is being specified for an airport baggage hall, where bags pass read points at the conveyor junctions on their way to the sortation loop.

Which two of the following are system requirements rather than design decisions?

(Select the two best answers.)

a) Tags must use the highest available spread factor so that reads succeed right across the loop

b) Collection must continue at a stated level of service when any single gateway is lost

c) Every conveyor junction must have a gateway within line of sight of the belt

d) A bag passing a read point must be registered in the baggage system within a stated number of seconds

05. A grain terminal has finished installing gateways with directional antennas on the silo gantries and along the conveyor galleries. The validation team must sign off the physical installation against the placement map before any coverage measurement starts.

Which two checks does that sign-off require?

(Select the two best answers.)

a) Confirm each antenna’s azimuth and downtilt against the map row

b) Confirm the received level at each antenna meets the design threshold

c) Confirm the gateway serial numbers against the Bill of Materials

d) Confirm the mounting height and mount type at each position

06. In a residential district on a metering rollout, roughly one meter in seven reports only intermittently. The affected meters are scattered across the district rather than clustered in one street.

Which first measurement separates a coverage problem from an interference problem?

a) Re-run the predictive model with the building materials of the district updated

b) Capture at the collector and compare retry counts between the meters that report and those that do not

c) Sweep the affected streets with a spectrum analyser to locate energy in the band

d) Record signal level and noise floor at a sample of the affected meters

07. During the site visit to a heritage museum, a spectrum observation shows a persistent wideband emitter in the band of interest near the east wing, present whenever the building’s chillers are running and absent when they are not.

How should this finding enter the requirements documentation?

a) As a documented environmental constraint on the east wing, with a stated link-quality requirement

b) As a fixed transmit-power figure for the east wing nodes, so that the requirement is specific and testable

c) As an observation in the survey appendix, since the client did not ask for anything relating to it

d) As a remediation task for the facilities team, since the emitter comes from plant the museum owns

08. A commercial glasshouse grower has approved the wireless IoT design for soil-moisture and canopy-temperature monitoring across fourteen growing houses. The procurement team must now raise purchase orders, several weeks before the design is released to the installation contractor.

Which design deliverable is written for the procurement team?

a) The design report, with its heat maps and placement maps

b) The validation and test report, with its asset inventory

c) The physical installation guide, with its mounting sequence

d) The Bill of Materials, itemised by part with quantities

09. Haul truck telemetry at an open-pit mine drops out near the primary crusher. An engineer ran a protocol analyser at the collection point for a full shift. The capture contains telemetry from every truck in the fleet, the tool flagged no anomalies, and he has reported that RF is not the problem.

What is the flaw in that conclusion?

a) The analyser sat at the collection point and could not hear frames from the far end of the pit

b) A single shift is too short a window to characterise an interferer that runs on a duty cycle

c) The analyser reports only on what it can decode, so energy from the crusher drives would lift the noise floor without ever entering the capture

d) Retries and losses are not counted as anomalies by default, so the capture needed a stricter filter

10. Environmental monitoring is to be designed across a heritage museum estate, covering public galleries, a conservation studio and off-site stores. Before requirements gathering has begun, the client standards team has mandated one wireless IoT technology family on the grounds that another part of the organisation already runs it.

How should the requirements phase handle that mandate?

a) Record it as a stated constraint, gather the requirements independently, then report what it cannot meet

b) Accept it only if a proof of concept in the most difficult gallery succeeds, and otherwise decline the constraint

c) Accept it as a requirement, since the client owns the estate, and shape the requirements to suit it

d) Set it aside for now and raise it in the design phase, once measurements exist to argue with

Solutions:

Question: 01

Answer: c

Question: 02

Answer: b

Question: 03

Answer: c

Question: 04

Answer: b, d

Question: 05

Answer: a, d

Question: 06

Answer: d

Question: 07

Answer: a

Question: 08

Answer: d

Question: 09

Answer: c

Question: 10

Answer: a

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CWNP CWIDP-402 Certification Exam Sample Questions and Answers

CWNP CWIDP-402 (CWIDP) Sample Questions:

Solutions:

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