Internet of Things (IoT) MCQs with Answers

System Software Engineers are often asked IoT-based questions to test their knowledge around network protocols such as HTTP, security, data management, interoperability, sensor integration, cloud services, energy efficiency, and so on.

So, we have curated the list of IoT-based Multiple Choice Questions around these topics only so that you could do some self-assessment before you apply for some embedded software engineering interview.

Self-learning can be overwhelming, especially when you are unaware of the pattern of interviews at top-tier companies.

This is where Interview Kickstart helps you to kickstart your interview preparation with an extensive approach. With real-life simulated environments with our seasoned instructors, you can learn to crack common interview questions on debugging embedded devices, implementing loggers.

Also, learn how to ensure fault-resilience in embedded software; how to design for performance, logging, and testability.

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Read More: Intersection AI and IoT: Future of Smart Devices

IoT Multiple Choice Questions

Q1. Which of the following is more powerful?

1. Raspberry pi 2 model
2. Raspberry pi model
3. Galileo gen 2 board
4. Raspberry pi 3 model

Answer: D. Raspberry pi 3 model

Q2.________ is responsible for the integration of LoWPAN devices with internet leveraging.

1. ieft nfc
2. ietf 6lowpan
3. ieft/nfc
4. rfid/nfc

Answer: B. ietf 6lowpan

Q3.__________ is responsible for saving the arguments received in three attributes

1. _init_
2. init_
3. _init
4. (init)

Answer: A. _init_

Q4. Which of the following is the core wrapper of GSN?

1. UDP
2. UTP
3. ZeroMQWrapper
4. GPS

Answer: C. ZeroMQWrapper

Q5. Not only does API architecture include critical elements but also involve multiple _________

1. Devices
2. Network
3. System
4. Multi-homing

Answer: D. Multi-homing

Q6. What type of technology is IoT based on?

1. Hardware
2. Software
3. Firmware
4. Both A and B

Answer: D. Both A and B

Q7.  What is the extension of the JAVA file in IoT?

1. .exe
2. .cps
3. .jar
4. .docx

Answer: C. .jar is used in IoT as an extension of the JAVA file in IoT

Q8.  SPI protocol consists of ________  signals.

1. 4
2. 5
3. 7
4. 9

Answer: B. Five signals

Q9. The range of z-wave is _______

1. 10 to 70 m
2. 30 to 100 m
3. Less than 10 m
4. 100 to 1000 M

Answer: B. 30 to 100 m

Q10. GSN works on __________  programming languages.

1. JAVA
2. C++
3. Python
4. BASIC

Answer: A. JAVA

Q11.  Which of the following are communication protocols for IoT?

1. Z-Wave
2. Zigbee
3. Both A and B are correct
4. None of the above

Answer: C. Both A and B are correct

Q12. client() class is provided to create _____

1. Data
2. Batch
3. Hardware
4. Methods

Answer: D. Methods

Q13. ______network is used by a sensor

1. han and lan
2. lan and pan
3. Han and pan
4. lan, han, pan

Answer: D. lan, han, pan

Q14.  HART full form is:

1. High Addressable Reduce Transport
2. Highway Addressable Remote Transducer
3. Highway Application Remote Transport
4. Hard Application Remote Transducer

Answer: B. Highway Addressable Remote Transducer

Q15. Which layer helps in end-to-end communication of IoT?

1. 1. Data security
   2. Logical
   3. Transport
   4. None of the above

Answer: C. Transport

Q16.  Which of the following is the security mechanism in Wifi?

1. HTTP
2. DOCX
3. PDF
4. WPA

Answer: D. WPA

Q17. IoT uses__________

1. Satellite
2. Cable
3. Radio identification technology
4. Broadband

Answer: C.  Radio identification technology

Q18. _______ is a type of google.com

1. TCP
2. UDP
3. UTP
4. DNS

Answer: D. DNS

Q19. What is the standard length of a MAC address?

1. 16 bits
2. 8 bits
3. 32 bits
4. 48 bits

Answer: D. 48 bits is the standard length of a MAC address.

If your self-assessment is going good, you can watch the embedded video below that offers insights into how our mentors equip you for interviews on Embedded systems and Embedded Software Engineering.

These types of questions are often asked in companies like Google, Meta, Amazon, Apple and other top-tier companies.

Q20. The core element operates _________

1. PaaS
2. Saas
3. IoT service provider
4. SNP

Answer: C. IoT service provider

Q21. What is the maximum speed of Z-Wave?

1. 50 kbps
2. 100 kbps
3. 500 kbps
4. 150 Mbps

Answer: B. 100 kbps

Q22. ________ many addresses are possible in IPv4

1. 2^64
2. 2^16
3. 2^32
4. 2^20

Answer: A. 2^64

Q23. LPWAN stands for:

1. Lower Power Width Area Network
2. Lower Protocol of Wide Area Network
3. Low Power Wide Area Network
4.  None of the above

Answer: C. Low Power Wide Area Network

Q24. _______ is a short-range wireless network

1. Hotspot
2. Bluetooth
3. Wifi
4. VPN

Answer: D. VPN

Q25. What is I2C also called?

1. One wire interface
2. Two-wire interface
3. Both of the above
4. None of the above

Answer: B. Two-wire interface

Q26. _________community works together to establish an IoT architecture.

1. bot 2 bot
2. red hat
3. eclipse iot
4. intercloud

Answer: C. eclipse iot

Q27. __________  of data cannot be read by users.

1. Passwords
2. Encryption
3. Passcode
4. Both A and C are correct

Answer: B. Encryption

Q28. ZigBee Smart Energy uses _______ topology.

1. Bus topology
2. Table topology
3. Circle topology
4. Star topology

Answer: D. Star topology

Q29. Which of the following is not an IoT enabler?

1. RFID
2. Nanotechnology
3. HTTP
4. Sensors

Answer: C. HTTP

Q30. Which of the following allows the control of electronic components?

1. http
2. mqtt
3. restful api
4. None of the above

Answer: B. mqtt

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