IoT Situational-Based MCQs - Basic to intermediate

A home automation IoT system stops responding to user commands from a mobile app. What should be checked first?

You're designing a temperature sensor node for agriculture. What’s the most power-efficient communication protocol to use?

Your ESP32-based IoT device overheats after prolonged operation. What’s a possible cause?

You need to deploy multiple IoT sensors in a large field. Which network topology suits best?

A motion sensor sends data to cloud every 1 second. What issue may occur?

A user wants to monitor their smart water meter remotely. Which architecture component handles remote access?

You’ve implemented MQTT protocol. What does the “broker” do?

Which sensor is best suited to detect gas leakage in a smart kitchen system?

A smart irrigation system fails to activate at scheduled time. What’s the likely cause?

You’re testing your IoT prototype but getting inconsistent sensor data. What’s your first debugging step?