IOT Interview Questions and Answers
Question - 11 : - What is Bluegiga APX4 protocol?
Answer - 11 : -
The Bluegiga APX4 is a solution that supports both the WiFI and BLE platform, and it is based on a 450MHz ARM9 processor.
Question - 12 : - What are the most common IoT applications?
Answer - 12 : -
The most common IoT applications are:
- Smart Thermostats: Helps you to save resources on heating bills by knowing your usage patterns.
- Connected Cars: IoT helps automobile companies handle billing, parking, insurance, and other related stuff automatically.
- Activity Trackers: Helps you to capture heart rate patterns, calorie expenditure, activity levels, and skin temperature on your wrist.
- Smart Outlets: Remotely turn any device on or off. It also allows you to track a device’s energy level and get custom notifications directly into your smartphone.
- Parking Sensors: IoT technology helps users to identify the real-time availability of parking spaces on their phones.
- Connect Health: The concept of a connected healthcare system facilitates real-time health monitoring and patient care. It helps in improved medical decision-making based on patient data.
Question - 13 : - What is Pulse Width Modulation?
Answer - 13 : -
PWM or Pulse Width Modulation is a variation of how much time the signal is high in an analog fashion. The signal can be high or low, and the user can even change the proportion of the time.
Question - 14 : - Mention applications of PWM in IoT
Answer - 14 : -
Applications of PWM in IoT are controlling the speed of DC motor, Controlling the direction of a servo moto, Dimming LED, etc.
Question - 15 : - List available wireless communications boards available in Raspberry Pi?
Answer - 15 : -
Wireless communications boards available in Raspberry Pi are 1) WiFi and 2) BLE/Bluetooth.
Question - 16 : - What are the functions used to read analog and digital data from a sensor in Arduino?
Answer - 16 : -
Functions used to read analog and digital data from a sensor in Arduino are: digitalRead() and digitalWrite().
Question - 17 : - What is Bluetooth Low Energy?
Answer - 17 : -
Bluetooth Low Energy is a wireless PAN (Personal Area Network) technology. It uses less power to transmit long-distance over a short distance.
Question - 18 : - Define MicroPython
Answer - 18 : -
MicroPython is a Python implementation, which includes a small subset of its standard library. It can be optimized to run on the ModeMCU microcontroller.
Question - 19 : - List available models in Raspberry Pi
Answer - 19 : -
Models of Raspberry Pi are:
- Raspberry Pi 1 Model B
- Raspberry Pi 1 Model B+
- Raspberry Pi 1 Model A
- Raspberry Pi Zero
- Raspberry Pi 3 Model B
- Raspberry Pi 1model A+
- Raspberry Pi Zero W
- Raspberry Pi 2
Question - 20 : - What are the challenges of IoT?
Answer - 20 : -
Important challenges of IoT are:
- Insufficient testing and updating
- Concern regarding data security and privacy
- Software complexity
- Data volumes and interpretation
- Integration with AI and automation
- Devices require a constant power supply which is difficult
- Interaction and short-range communication