Exams / CLF-C02 / Developer, end-user and IoT services / Question 1
CLF-C02 practice question: Developer, end-user and IoT services
Cloud Technology and Services A free question from our original CLF-C02 practice exam. Try it, then open the answer to see why each option is right or wrong.
A farming company is installing thousands of soil-moisture sensors. Each sensor must send readings securely to the AWS Cloud using the MQTT protocol so the data can be stored and analysed. Which service should the sensors connect to?
Choose one answer.
- AA. AWS IoT Core
- BB. Amazon WorkSpaces
- CC. AWS Amplify
- DD. AWS CodeBuild
Show the answer and explanation
Answer: A
- A. Right: Correct. IoT Core securely connects devices such as sensors to AWS and includes a message broker that supports MQTT.
- B. Wrong: WorkSpaces provides virtual desktops for people. It does not collect data from sensors.
- C. Wrong: Amplify helps developers build and host web and mobile applications. It is not a device connection service.
- D. Wrong: CodeBuild compiles and tests source code. It does not receive data from devices.
Explanation
AWS IoT Core connects internet-connected devices, such as sensors and smart appliances, to AWS with secure two-way communication. Its message broker supports MQTT, MQTT over WebSockets and HTTPS, and the data can then be routed to other AWS services for storage and analysis.
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