IoT (Internet of Things) Multiple Choice Questions

IoT (Internet of Things) Multiple Choice Questions

1) How many numbers of the element in the open IoT architecture?

Four elements

Five elements

Six elements

Seven elements 

Answer: (d) Seven elements

Description: There are seven numbers of elements in the open IoT architecture:

Configuration and monitoring

Cloud data storage

Scheduler

Request definition

Request presentation

Service delivery and utility manager

Sensor middleware (X-GSN)

2) Which of the following is the way in which an IoT device is associated with data?

Internet

Cloud

Automata

Network 

Answer: (b) Cloud

Description: Cloud-based services provide a way for IoT devices to be connected to data. For example: Just as the WWW (World Wide Web) runs on the Internet, so does IoT.

3) Which of the following IoT networks has a very short range?

Short Network

LPWAN

SigFox

Short-range Wireless Network 

Answer: (d) Short Range Wireless Network

Description: Short-range wireless networks have a very short range. This type of network is used for applications running in the local environment. The best example of this network is Wi-Fi and Bluetooth.

4) What is the full form of the LPWAN?

Low Protocol Wide Area Network

Low Power Wide Area Network

Long Protocol Wide Area Network

Long Power Wide Area Network 

Answer: (b) Low Power Wide Area Network

Description: The full form of the LPWAN is Low Power Wide Area Network. LPWAN is a type of wireless telecommunication, and it is specially designed for M2M (Machine to Machine) and IoT devices.

5) An IoT network is a collection of ______ devices.

Signal

Machine to Machine

Interconnected

Network to Network 

Answer: (c) Interconnected

Description: An IoT network is a collection of interconnected devices that communicate with other devices without human involvement.

6) Which one of the following is not an IoT device?

Amazon echo voice controller

Google Home

Nest Smoke Alarm

None of these 

Answer: (d) None of the these

Description: These are all IoT devices. Google Home is a smart speaker that obeys all the commands given by the user. The Amazon Echo Voice Controller is also a smart speaker. The Nest Smoke Alarm is an IoT device that sends a smoke alert message to the user when a fire occurs.

7) What is the main purpose of WoT (Web of Things) in the IoT?

Improve the usability and interoperability

Reduce the security

Complex the development

Increase the cost 

Answer: (a) Improve the usability and interoperability

Description: The main purpose of the Web of Things is to improve the usability and interoperability in IoT. Developing IoT Apps through WoT is much easier, faster, and less expensive.

8) What is the Arduino UNO?

Software

Hardware device

Network

Protocol 

Answer: (b) Hardware device

Description: The Arduino Uno is a hardware device that is based on the Microchip ATmega328P microcontroller. It has been developed by Arduino.cc.

9) ______ allows the user to control electronic components.

Android API

RETful API

MQTT API

CoAP API 

Answer: (b) RETful API

Description: The RETful API allows the user to control the electronic components connected to the Intel Galileo Gen 2 board via HTTP requests.

10) Which of the following is not an application of IoT?

Wearables

Smart Grid

Arduino

Smart City 

Answer: (c) Arduino

Description: The Arduino Uno is a hardware device that is based on the Microchip ATmega328P microcontroller.

11) Which one of the following protocols is lightweight?

IP

HTTP

MQTT

CoAP 

Answer: (c) MQTT

Description: The full form of the MQTT is Message Queue Telemetry Transport. It is a lightweight messaging protocol that runs over the TCP / IP protocol.

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

Filter the data

Locked the data

Store data

None of the these 

Answer: (c) Store data

Description: The main role of Big Data is to store data on a real-time basis. It uses multiple storage technologies to store the data.

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

Mobile phone

Television

Smart Speaker

Smart Meters 

Answer: (d) Smart Meters

Description: Smart Grid is used to monitor the power supply. Consumers' data is collected using a smart grid, and that data is analyzed and distributed to the consumers. The real example of a smart grid device is a smart meter.

14) What is the full form of the MQTT?

Multi-Queue Telemetry Things

Multiple Queue Telemetry Things

Message Queue Telemetry Things

Message Queue Telemetry Transport 

Answer: (d) Message Queue Telemetry Transport

Description: The full form of the MQTT is Message Queue Telemetry Transport. It is a lightweight messaging protocol that runs over the TCP / IP protocol.

15) What is the full form of ICT?

InterConnect Technology

Internet Connection Topology

Information and Communication Technology

Infer Communication Topology 

Answer: (c) Information and Communication Technology

Description: The full form of ICT is Information and Communication Technology. ICT is a multidimensional term for the IT sector that refers to all communication technologies, including the Internet, wireless networks, cell phones, computers, and software.

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

250 MHz

400 MHz

450 MHz

300 MHz 

Answer: (b) 400 MHz

Description: The frequency of this board is 400 MHz. The Galileo gen 2 board frequency gives the speed of operation of the board. Therefore, the speed increases as the frequency increases.

17) What is the full form of IANA?

Inter-Assessment-Number-Access

Internet-Association-Numbers-Authority

International-Aid-for-Network-Authority

Internet-Assigned-Numbers-Authority 

Answer: (d) Internet-Assigned-Numbers-Authority

Description: The full form of IANA is Internet-Assigned-Numbers-Authority. It is an administrative function of the Internet that monitors the IP addresses and domain names.

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

1883

8000

8883

8888 

Answer: (c) 8883

Description: The standard port number of Secure MQTT is 8883, and it is registered in IANA for Secure MQTT.

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

Logical layer

Data link layer

Transport layer

Session layer 

Answer: (c) Transport layer

Description: The transport layer focuses on end-to-end communication, and it gives reliability and congestion avoidance that packets will be delivered in the same way as the user sent the packet.

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

Optical Sensor

Gas Sensor

Smoke Sensor

Pressure sensor 

Answer: (d) Pressure sensor

Description: The pressure sensor is used to measure the gases or liquid. Pressure is the expression of a force that is necessary to prevent fluid from expansion.

21) Which interface does the fingerprint sensor use?

UART interface

CoAP interface

SPI interface

I2P interface 

Answer: (a) UART interface

Description: The fingerprint sensor uses a UART interface to store fingerprint data. It can be configured in 1:1 or 1:N mode to identify the person.

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

RS32

RS232C

4RS85

All of the these 

Answer: (b) RS232C

Description: The most commonly used protocol for USART in asynchronous mode is RS232C. This protocol describes the physical interface for relatively low-speed serial data-communication between devices and computers.

23) What is the full form of HDLC?

Higher Data Level Communication

Higher Data Link Communication

High-level Data Link Control

High Data Level Control 

Answer: (c) High-level Data Link Control

Description: The full form of the HDLC is High level Data Link Control. It is a communication protocol. It is used to transmit data between nodes and data points.

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

ML

MM

RXWake

None of the these 

Answer: (b) MM

Description: The MM bit defines the address bit in the control register.

25) What is another name for I2C?

Signal wire interface

Two wire interfaces

UART

USART 

Answer: (b) Two wire interface

Description: The I2C protocol is also known as the two-wire interface. It is a simple serial-communication-protocol that uses pins of a microcontroller, named as serial clock (SCL) and serial data (SDA).

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

Low

High

Medium

All of the these 

Answer: (a) Low

Description: When the clock line SCL is high, the SDA is low transitioned. Under normal circumstances, this does not happen, as you can see in the subsequent clock pulses that the data line is stable in one state, either high or low, when the clock line is high.

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

XMPP

SPI

MQTT

HTTPS 

Answer: (b) SPI

Description: SPI stands for Serial Peripheral Interface. The SPI protocol is commonly used to secure digital card applications and liquid crystal displays.

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

Five signals

Six signals

Nine signals

Zero signals 

Answer: (a) Five signals

Description: There are five logic signals in the SPI protocol.

SCLK (Serial Clock): This signal is used to clock-signal.

MOSI (Master Output Slave Input): This signal is used to transfer the data from master to slave.

MISO (Master Input Slave Output): This signal is used to transfer the data from slave to master.

SDIO (Serial Data I/O)

SS (Slave Select)

29) What does MOSI mean?

MOSI is a network line.

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

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

None of the these 

Answer: (c) MOSI is a data line that sends the data from master to slave.

Description: MOSI stands for Master Out Slave In. MOSI is a data line that sends the data from master to slave.

30) What is the full form of HART?

Highway Application Remote Transport

Highway Addressable Remote Transducer

High Address Reduce Transport

High Application Remote Transport 

Answer: (b) Highway Addressable Remote Transducer

Description: The full form of HART is Highway Addressable Remote Transducer. It is a master and slave protocol in which a slave device only speaks when spoken by a master.

31) What is the range of z-wave?

30 to 100 m

300 to 1000 m

100 to 1000 m

Only 10 m 

Answer: (a) 30 to 100 m

Description: The Z-Wave is a low-power Mac protocol designed especially for smart home and small business domains. It covers the range from 30 to 100 m.

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

Bus Topology

Ring Topology

Star Topology

Any Topology 

Answer: (c) Star Topology

Description: ZigBee Smart Energy is designed for a wide range of IoT applications. It supports a wide range of network topologies, such as star topology.

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

ZigBee Smart Energy

LoRaWAN

WirelessHART

Secure MQTT 

Answer: (d) Secure MQTT

Description: Secure MQTT is a session layer protocol. It is an extended version of the MQTT protocol that uses encryption based on lightweight attribute-based encryption.

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

Micro-wire or plus

Microwire

Data SPI

Queued SPI 

Answer: (d) Queued SPI

Description: A Queued SPI is a type of SPI controller that is used to send a data queue from the SPI bus.

35) What is MQTT primarily used for?

User communication

System transfer

Machine to Machine Communication

Create connection 

Answer: (c) Machine-to-Machine Communication

Description: MQTT is a public messaging protocol. It is designed for lightweight "Machine to Machine" communication. It was originally developed by IBM.

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

908.42 GHz

928.49 GHz

888.42 GHz

708.49 GHz 

Answer: (a) 908.42 GHz

Description: The frequency rate of z-wave is 908.42 GHz. The Z-Wave is a low-power Mac protocol designed especially for smart home and small business domains.

37) What is another name of the tactile sensor?

Weight sensor

Imaging sensor

Proximity sensor

Touch sensor 

Answer: (d) Touch sensor

Description: The tactile sensor is also called a touch sensor. It is an electronic sensor used for detecting physical touch. The size of this sensor is very small.

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

Two types

Five types

Seven types

Nine types 

Answer: (a) Two types

Description: Two types of capacitive touch sensors in IoT:

Projected-capacitive sensing

Surface-capacitive sensing

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

Resistive touch sensors

Human sensor

Capacitive touch sensor

Follow sensor 

Answer: (c) Capacitive touch sensor

Description: The capacitive touch sensors are widely used in portable devices such as cell phones. The main reason for this sensor development on the phone is low cost, durability, and design.

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

Python

JAVA

Android

C++ 

Answer: (b) JAVA

Description: GSN stands for Global Sensor Network. GSN works on JAVA language because JAVA language is portable in nature. The other language (such as C, C++, Python, and HTML) is not portable in nature.

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

VPN

Wi-Fi

Internet

WWW 

Answer: (b) Wi-Fi

Description: Short-range wireless networks have a very short range. This type of network is used for applications running in the local environment. Examples of this network are Wi-Fi and Bluetooth.