IOT Interview Questions and Answers Set-1

1. What is IoT?

IoT stands for an Internet of Things. It is largely a network using which matters can talk to each other the use of the internet as an approach to communication between them. All of the matters should be IP protocol enabled on the way to have this concept viable. Not one but more than one technology are concerned to make IoT an exquisite fulfillment.

2. What is Arduino Shields?

Arduino shields are modular circuit boards that piggyback onto your Arduino to instill it with extra functionality.

3. There may be some questions on Linux OS, as it is most popular in IoT domain?

One can refer the same on net on very basics such as what are the qualities of linux OS? What are the features of linux OS over other Operating Systems etc.

This set of IoT(Internet Of Things) interview questions and answers are useful for freshers and experienced level of job positions.

4. What is PWM?

PWM stands for Pulse Width Modulation. Pulse width modulation allows us to vary how much time the signal is high in an analog fashion. While the signal can only be high (usually 5V) or low (ground) at any time, we can change the proportion of time the signal is high compared to when it is low over a consistent time interval.

5. What are the important components that exist in the Internet of Things?

The important components that exist in the Internet of Things are as follows:

1. Hardware
2. Software
3. Verbal exchange infrastructure

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6. List some applications of PWM in IOT?

Dimming LED, controlling the speed of DC motor, controlling the direction of a servo motor and etc.

7. What are the most used sensors types in IOT?

  • Temperature sensors
  • Proximity sensor
  • Pressure sensor
  • Gas sensor
  • Smoke sensor
  • IR sensors
  • Motion detection sensors

8. What is BLE?

BLE stands for Bluetooth Low Energy. Bluetooth Low Energy uses the same 2.4 GHz radio frequencies as classic Bluetooth but uses less power to transmit distance over a short distance

9. How does the internet of the whole thing relate to the internet of factors?

The “net of everything” builds on the inspiration of the “net of things” by using including community intelligence that lets in convergence, orchestration and visibility across previously disparate structures.

10. What is the use of BLE in IOT?

Unlike classic Bluetooth, BLE remains in sleep mode constantly except for when a connection is initiated. It is used in applications that do not need to exchange large amounts of data and can, therefore, run on battery power for years at a cheaper cost, therefore it is used as one of the means of exchanging data between the devices.