IoT MCQ O Level

IoT MCQ O Level

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IoT MCQ O Level questions with answers

In this blog you will get Top 50 IoT MCQ O Level for Ean 2025 exam

1) What does IoT stand for?

a) Internet of Things

b) Internet of Technology

c) Intelligent Objects and Things

d) Internet of Telecommunication

2) Which of the following is NOT an example of an IoT device?

a) Smart thermostat

b) Wearable fitness tracker

c) Desktop computer

d) Smart refrigerator

3) Which wireless technology is commonly used for IoT communication?

a) Wi-Fi

b) Bluetooth

c) Zigbee

d) All of the above

4) What is the purpose of a sensor in an IoT device?

a) To transmit data to the cloud

b) To analyze data received from other devices

c) To detect and measure physical phenomena

d) To provide power to the device

5) Which of the following is an IoT application in the healthcare industry?

a) Remote patient monitoring

b) Smart city infrastructure

c) Online shopping

d) Social media platforms

6) Which of the following is not a component of an IoT system?

a) Sensors

b) Cloud Computing

c) Data Analytics

d) Software Development

7) Which wireless communication technology is commonly used in IoT devices for short-range communication?

a) Bluetooth

b) Wi-Fi

c) NFC (Near Field Communication)

d) Zigbee

8) What is the primary purpose of an IoT gateway?

a) To connect IoT devices to the internet

b) To process and analyze data from IoT devices

c) To provide power supply to IoT devices

d) To act as a physical interface for IoT devices

9) Which of the following is an example of a real-world application of IoT?

a) Smart home automation

b) Online banking

c) Video streaming

d) Social media networking

10) Which of the following is NOT a component of the IoT ecosystem?

a) Sensors and Actuators

b) Cloud Computing

c) Mobile Devices

d) Blockchain Technology




11) Which one of the following protocols is lightweight?

  1. IP

  2. HTTP

  3. MQTT

  4. CoAP

12) What is the role of Big Data in IoT’s Smart Grid architecture?

  1. Filter the data

  2. Locked the data

  3. Store data

  4. None of the these

13) What is the real example of a smart grid device in IoT?

  1. Mobile phone

  2. Television

  3. Smart Speaker

  4. Smart Meters

14) What is the full form of the MQTT?

  1. Multi-Queue Telemetry Things

  2. Multiple Queue Telemetry Things

  3. Message Queue Telemetry Things

  4. Message Queue Telemetry Transport

15) What is the full form of ICT?

  1. InterConnect Technology

  2. Internet Connection Topology

  3. Information and Communication Technology

  4. Infer Communication Topology

16) Which of the following frequencies is correct for the Galileo gen 2 board?

  1. 250 MHz

  2. 400 MHz

  3. 450 MHz

  4. 300 MHz

17) What is the full form of IANA?

  1. Inter-Assessment-Number-Access

  2. Internet-Association-Numbers-Authority

  3. International-Aid-for-Network-Authority

  4. Internet-Assigned-Numbers-Authority

18) What is the standard port number of secure MQTT?

  1. 1883

  2. 8000

  3. 8883

  4. 8888

19) Which of the following layers provides end-to-end communication in IoT?

  1. Logical layer

  2. Data link layer

  3. Transport layer

  4. Session layer

20) Which of the following devices is used to measure the gases or liquid?

  1. Optical Sensor

  2. Gas Sensor

  3. Smoke Sensor

  4. Pressure sensor




21) Which interface does the fingerprint sensor use?

  1. UART interface

  2. CoAP interface

  3. SPI interface

  4. I2P interface

22) Which of the following protocols is used by USART?

  1. RS32

  2. RS232C

  3. 4RS85

  4. All of the these

23) What is the full form of HDLC?

  1. Higher Data Level Communication

  2. Higher Data Link Communication

  3. High-level Data Link Control

  4. High Data Level Control

24) Which of the following “bit” defines the address bit in the control register?

  1. ML

  2. MM

  3. RXWake

  4. None of the these

25) What is another name for I2C?

  1. Signal wire interface

  2. Two wire interfaces

  3. UART

  4. USART

Some other IoT MCQ O Level questions with answers

IoT O Level MCQ Questions in hindi

26) When the clock line SCL is high, the SDA is ____ transitioned.

  1. Low

  2. High

  3. Medium

  4. All of the these

27) Which of the following protocols does the secure digital card application use?

  1. XMPP

  2. SPI

  3. MQTT

  4. HTTPS

28) How many logic signals are there in the SPI protocol?

  1. Five signals

  2. Six signals

  3. Nine signals

  4. Zero signals

29) What does MOSI mean?

  1. MOSI is a network line.

  2. MOSI is a clock signal that sends the clock signals from master to slave.

  3. MOSI is a data line that sends the data from master to slave.

  4. None of the these

30) What is the full form of HART?

  1. Highway Application Remote Transport

  2. Highway Addressable Remote Transducer

  3. High Address Reduce Transport

  4. High Application Remote Transport




31) What is the range of z-wave?

  1. 30 to 100 m

  2. 300 to 1000 m

  3. 100 to 1000 m

  4. Only 10 m

32) Which of the following topology is used for ZigBee Smart Energy?

  1. Bus Topology

  2. Ring Topology

  3. Star Topology

  4. Any Topology

33) Which of the following protocols does not exist at the data link layer?

  1. ZigBee Smart Energy

  2. LoRaWAN

  3. WirelessHART

  4. Secure MQTT

34) Which of the following is the type of SPI controller?

  1. Micro-wire or plus

  2. Microwire

  3. Data SPI

  4. Queued SPI

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35) What is MQTT primarily used for?

  1. User communication

  2. System transfer

  3. Machine to Machine Communication

  4. Create connection

36) What is the frequency rate of z-wave?

  1. 908.42 GHz

  2. 928.49 GHz

  3. 888.42 GHz

  4. 708.49 GHz

37) What is another name of the tactile sensor?

  1. Weight sensor

  2. Imaging sensor

  3. Proximity sensor

  4. Touch sensor

38) How many types of capacitive touch sensors in IoT?

  1. Two types

  2. Five types

  3. Seven types

  4. Nine types

39) Which of the following touch sensors is used in a cell phone?

  1. Resistive touch sensors

  2. Human sensor

  3. Capacitive touch sensor

  4. Follow sensor

40) Which of the following languages does GSN work on?

  1. Python

  2. JAVA

  3. Android

  4. C++

41) Which of the following is the example of a short-range wireless network?

  1. VPN

  2. Wi-Fi

  3. Internet

  4. WWW




42. Which of the following is an example of a smart home application of IoT?

a) Online home rental marketplace
b) Home security and surveillance system
c) Home energy management platform
d) Home cleaning and maintenance service

43. Which of the following is an example of a smart city application of IoT?

a) Online city guide and directory
b) Public transportation tracking and scheduling system
c) Waste management and recycling platform
d) Tourist information and booking service

44. Which of the following is a potential privacy concern associated with the use of IoT systems?

a) Unauthorized access to personal data
b) Loss of connectivity and data loss
c) Inability to integrate with legacy systems
d) Incompatibility with existing software and hardware

45. Which of the following is an example of a wearable technology device?

a) Smart home thermostat
b) Fitness tracker
c) Voice-activated assistant
d) Home security camera

46. IRC is an abbreviation for __________:

a. Interconnect Reduce Chat

b. Internet Relay Chat

c. Interconnection Relay Chat

d. Internet Reduce Chat

47. The Network layer protocol is present in the _____________.

a. Bridges

b. Packets

c. Switches

d. Host

 48. The ________ filtering is a security measure on various wireless networks:

a. IP

b. OUI

c. MAC

d. NIC

49.The XMPP implementation utilises ______________.

a. Gaming

b. CoAP

c. Polling

d. Email

50. XMPP uses the ________ architecture:

a. Public/subscriber

b. Message

c. Centralized client-server

d. Decentralized client-server

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