MOTS — NQF4 IoT Developer Pre-Entry Quiz + Admin Viewer (Learning Variant v1 / Left Align / 25Q / No Logo)

Managed Outsourced Technology Solutions (MOTS)

IoT Developer • NQF 4 • Pre-Entry Assessment

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IoT Developer (Pre-Entry) — Core Knowledge & Practical Foundations — Questions (25)

1) Before wiring devices, what BEST describes IoT telemetry?

A) Automatic measurement and remote transmission of data B) Manual logging by technicians on site C) Only visual dashboards without sensors D) Encrypting files after download

2) Which is the clearest distinction between IoT and M2M?

A) IoT always uses satellites B) M2M excludes sensors C) IoT integrates devices, cloud/services, analytics and user apps D) M2M always requires humans-in-the-loop

3) A practical example of IoT impact in business is:

A) Posting photos to social media B) Predictive maintenance that reduces unplanned downtime C) Using longer email signatures D) Turning off antivirus

4) A common adoption barrier in IoT programmes is:

A) Too many skilled staff available B) Unlimited budget C) Lack of interoperability and unclear value D) Guaranteed 5G coverage everywhere

5) A baseline security consideration when onboarding devices is to:

A) Ship with default credentials and never rotate B) Disable encryption to save battery C) Use unique credentials and minimal required permissions D) Share device keys on a public wiki

6) Which component primarily SENSES the environment?

A) Actuator B) Sensor C) Gateway D) Cloud dashboard

7) Which is an example of an ACTUATOR in an IoT solution?

A) Temperature probe B) Ultrasonic rangefinder C) Relay driving a pump D) MQTT topic name

8) Microcontroller vs Single Board Computer (SBC): which is MOST accurate?

A) MCUs are good for low-power control; SBCs (e.g., Raspberry Pi) run full OS for heavier processing B) SBCs have no GPIO pins C) MCUs always need fans D) They are identical in capability

9) Why introduce an IoT gateway/edge device?

A) To pre-process/filter data, translate protocols, improve security/latency before cloud uplink B) To remove the need for sensors C) So devices can print more pages D) To increase data plan costs

10) Which trade-off is MOST typical across connectivity choices?

A) More range usually demands more power and/or lower data rate B) Shorter range always costs more C) Higher bandwidth always uses less power D) Range and bandwidth are unrelated

11) A low-power, long-range option suited to infrequent small payloads is:

A) Bluetooth LE B) Wi‑Fi C) LPWAN (e.g., LoRaWAN) D) USB-C

12) Proper copper cable handling includes:

A) Ignoring bend radius B) Clear labelling and appropriate routing C) Tying cables as tight as possible D) Leaving connectors unprotected

13) Which protocol is commonly used for lightweight publish/subscribe telemetry?

A) SMTP B) MQTT C) FTP D) POP3

14) A complete IoT vertical stack MOST typically includes:

A) Devices → Gateway/Edge → Platform/Cloud → Applications/Dashboards B) Devices only C) Cloud only D) Applications only

15) Which data should usually be sent upstream from edge to reduce load?

A) All raw high-frequency signals always B) Only filtered/salient features or events needed for analytics C) Uncompressed video 24/7 by default D) No data at all

16) A good UI/UX practice for IoT dashboards is to:

A) Hide critical alerts under many menus B) Use responsive layouts with clear status, trends and actions C) Show unrelated animations D) Use tiny fonts for dense data

17) Which statement about databases is MOST accurate?

A) A database is only for images B) Relational databases store structured data in tables with defined fields and keys C) Databases cannot import/export data D) SQL is not used for queries

18) A simple SQL operation to read rows from a table is:

A) SELECT … FROM … B) REMOVE … FROM … C) COPY … TO … WITHOUT SELECT D) VISUALISE … USING …

19) Which spreadsheet feature helps summarise large datasets for quick reporting?

A) Manual typing only B) Pivot tables/charts C) Defragmenter D) Spell check only

20) Which practice strengthens IoT security posture MOST at device level?

A) Open debug ports in production B) Hard-coded shared passwords C) Secure boot, rotated credentials, least-privilege access D) Publish keys in code samples

21) Under SA POPIA-style principles, a BEST practice is to:

A) Collect extra personal data ‘just in case’ B) Share datasets widely for convenience C) Minimise personal data collected and restrict access to the stated purpose D) Store forever without review

22) A sensible recovery approach for gateways includes:

A) No backups B) Documented reset/restore path and ability to reload config or image safely C) Erase logs frequently without records D) Disable monitoring

23) When troubleshooting a sensor that reports zero values intermittently, FIRST check:

A) Reinstall all cloud services B) Physical connections, power, and basic signal at the device C) Replace all nodes D) Factory reset the platform

24) An example of a practical IoT deployment task at NQF4 is:

A) Writing a new operating system B) Deploying edge devices and configuring network credentials C) Inventing a new protocol D) Designing a 7nm microprocessor

25) In a design thinking workshop for IoT, the BEST early activity is to:

A) Jump straight to coding B) Assume the solution and order hardware C) Empathise with users and define the problem before ideating D) Ignore constraints to save time

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IOT Developer4 Pre-entry

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