IoT Interview Questions







IoT (Internet of Things) is a state-of - the-art automation and analytics system that uses networking, big data, sensing and artificial intelligence technologies to provide a complete product or service framework. IoT systems allow users to simplify, incorporate and analyze more deeply within a system. This takes advantage of recent software advancements, declining hardware prices and modern technology attitudes.

This allows IOT apps to control the Internet remotely, thereby creating opportunities for direct connection and incorporation of the physical world with computer-based systems using internet and sensors. The main advantages of IoT are:


Benefits of IoT


  • Improved customer engagement: IOT improves customer experience by automating the practice. For examples. Sensors can detect any problems in the vehicle automatically. The driver, as well as the manufacturer, will be told.

  • Technical optimization: IOT has helped improve software and develop it.

  • Reduced waste: Our current insights are superficial, but IoT provides real-time information leading to effective management of resources and decision-making.


Now, if you're looking for an IoT-related job, you need to prepare for the IoT Questions for 2019. It is true that, according to the different job profiles, each interview is different. Here we prepared the important questions and answers for the IoT interview that will help you to succeed in your interview.


We will present 10 most important and frequently used IoT interview questions in this 2019 IoT Interview Questions article. Such questions of the interview were divided into two parts:


What are the main IOT systems components?


IOT system consists of three main parts:

Sensors

Network communication

Applications for data storage.


What are IoT-related security concerns?

This is the common questions posed in an interview by the IoT survey. Data security and privacy are IoT-related major concerns. Such devices are vulnerable to hacking, and hackers may use cloud endpoints to target servers. Providing adequate security and privacy measures for software developers and device designers.


Explain the IoT protocol stack.

  • IoT has 4 protocol layers:

  • Sensing and information: Includes various smart sensor devices based on GPS, RFID, Wi-Fi, etc.

  • Network connectivity: Layer is based on a wired and wireless network such as WLAN, WMAN, Ethernet, optical fiber and more.

  • Information processing layer

  • Application layer


Explain the IoT network's basic architecture.

IoT has three main components: sensors, network connectivity and applications for data storage. Sensors either communicate for data storage directly with the central server or communicate via gateway tools. A gateway can handle different wireless interfaces, which is why multiple technologies and multiple sensors can be handled by one gateway. Using wireless or wired technologies such as Wi-Fi, Mobile or Fiber, DSL, the typical wireless technologies widely used are Zigbee, Zwave, RFID, NFC etc.


Micro-Controller Units can be used to construct the IoT hardware network. Micro-controller choice depends on the chip resources system, the power required, and the interfaces required for different sensors and memory requirements.


The following aspects need to be studied in order to finalize the IoT hardware architecture:

  • Type of sensors / actuators.

  • Form of software for interaction.

  • Amount of data to be transmitted and collected.

  • A data transmission rate.

Explain the IOT protocol for Bluetooth Low Energy?

This protocol was initially introduced by Nokia as a wibree in 2006. Moreover, this standard, known as Bluetooth smart, has the same distance coverage due to the special Bluetooth, with a significant decrease in power intake. It has comparable bandwidth with ZigBee's use of narrow spacing. Low energy latency and reduced complexity make it more feasible to include microcontrollers in low-cost.


What are the world's top 5 applications for Machine to Machine (M2M)?

These are as follows: asset tracking and monitoring in some form or another (robbed vehicles, fleet, construction network, and many others seem to be the biggest. Insurance telematics is massive as it allows insurance companies the ability to reduce the risk and compel higher / extra appealing pricing. Utilities / automatic meter reading / clever grids–plenty of control and support in this regard.


How could Internet Address (IPv6) affect the Internet of Things development and implementation?

This is the most famous questions asked in an interview with the IoT survey. A barrier to IoT enhancement is the most widely used technical boundaries of the network protocol(IP) version. IP is a set of rules that computers use to send and receive information over the Internet, including a specific address that should be spoken by any connected device or object. Version 4 (ipv4) is currently in the most comprehensive use. With few new addresses available in many parts of the market, it can handle around four billion addresses and its miles near saturation.

Version 6 (ipv6) allows the wide variety of IP addresses to increase significantly. The maximum number of specific addresses, 4.2 billion, is not adequate for ipv4 to provide even one offer for each of the 7.3 billion people on earth. In an estimation, Ipv6 can handle more than 1038 addresses per man or woman through excess of a thousand billion trillion.


What is the difference between a network of wireless sensors (WSN) and the network of Things(IoT)?

WSN: The IoT packages are based on the Wi-Fi sensor community. WSN is a motes network designed to look at, look at or track the desired utility's body parameters.

E.g. motes deployed in agricultural land, monitor temperature or likely soil moisture, collecting statistics and ideal statistical analysis results roughly crop yields-high quality or quantity.

IOT: IoT is an internet-controlled community of body objects. Now just as win, you're going to stumble on tracking physical parameters in its operation. But there is little difference in the desired performance. IoT is about M2M, it's much bigger than making smart devices every day.

E.g. device hooked around the temperature in your thermostat monitor and adjusted to the maximum preferred setting for it.


What does a smart city mean when it comes to the Internet of Things?

There is no defined accepted definition or set of standards to define what a smart metropolis is, as with IoT and different popular era terms. Although specific characterizations vary widely, they include the use of IoT and related technologies to enhance electricity, transportation, governance, and other municipal offerings for certain preferences that include conservation or advanced lifestyles.


What is an Internet of Things protocol for Bluegiga APX4?

It is possible to use bluegiga and wireless together without interference because they are compatible with protocols of coexistence. The bluegiga apx4 is based on a 450mhz arm9 processor that supports both Bluetooth and Wi-Fi.

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