10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free IoTBIZ questions are organized by exam domain, so you can see how each part of the Internet of Things for Business Professionals blueprint is tested. Reveal the answer and explanation under each question.
A bottling plant's maintenance dashboard combines equipment condition, spare-parts availability, and the production schedule. Which of these messages demonstrates prescriptive maintenance?
Correct answer: B - Replace the bearing during Friday's scheduled changeover.
Temperature sensors in a warehouse feed a controller that tells staff when ventilation is needed. Staff still switch on the exhaust fan manually. To let the existing controller perform that physical action, which component belongs on its output?
Correct answer: A - An electrically controlled relay for the fan
The design brief for a paper mill requires a defect-detection result within 100 milliseconds of each camera image. Network travel to the cloud and back takes at least 260 milliseconds. A tested local gateway returns the complete result within 35 milliseconds under peak load. Which design meets this response-time requirement?
Correct answer: B - On the local gateway, with results uploaded afterward.
Midway through a rural delivery, a truck disappears from the fleet's live map. Its tracker still displays correct, changing GPS coordinates locally, but its queue of unsent reports keeps growing. Other vehicles update normally. Where should support focus its first investigation?
Correct answer: D - Delivery of this tracker's reports to the fleet service
A food distributor would spend $72,000 on remote refrigeration diagnostics. Avoided contractor visits would save $36,000 a year in fees; subscriptions and support would cost $12,000 a year. Staff time worth another $18,000 a year would be freed, but staffing and salaries would remain unchanged. The company requires simple cash payback below 3.5 years: initial outlay divided by annual net cash savings. All amounts are constant. Which appraisal correctly applies that financial test?
Correct answer: A - Passes: $24,000 net cash savings per year gives a 3.0-year payback.
During an access test, a service contractor signs in to a customer's irrigation dashboard using an individually assigned account and multi-factor authentication. The contract limits the contractor to inspecting fault records, but the same account can remotely open valves. The demonstrated control failure concerns:
Correct answer: C - Authorization of operations beyond the contractor's assigned role.
Two unassigned pumps meet a ward's equipment specification. Pump 14 has a fresh location update, current cleaning and safety releases, and the required charge. A nearer pump, Pump 9, has only a tag detection from yesterday. The logistics coordinator is authorized to dispatch released equipment. The ward's request should be filled by:
Correct answer: D - Dispatching Pump 14 using its current location and documented readiness.
'Few repair requests must mean the roads are in good condition,' says a city official reviewing residents' app reports. The district in question also has low smartphone ownership. To distinguish low repair need from limited access to reporting, the most informative comparison would be:
Correct answer: C - App reports versus independent road inspections in each district.
After a pallet-tracking pilot succeeds in a heated warehouse with reliable cellular service, the team proposes a rollout to unheated metal warehouses with frequent cellular outages. What evidence would justify extending the solution to those sites?
Correct answer: D - A representative trial confirming tracking and recovery in the new conditions.
An unauthorized cloud account can issue start/stop commands accepted by a pumping station's controller. The extent of the cloud compromise is unknown. Independent local controls are working, and the approved operating plan permits attended local operation at normal flow. Abruptly stopping every pump would interrupt an essential service. During containment, which operating arrangement best fits these conditions?
Correct answer: C - Transfer to attended local control and block remote command access.
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