Internet Of Things MCQs with Answers

Introduction :


Explore the interconnected world of the Internet of Things (IoT) with our comprehensive collection of Multiple Choice Questions (MCQs) and detailed answers! As IoT continues to transform industries and daily life in India and worldwide, understanding its underlying principles, technologies, and applications is becoming increasingly vital. This resource is designed for students, developers, and professionals aiming to solidify their grasp of IoT fundamentals, including sensor technologies, communication protocols, data processing, security challenges, and real-world implementations. Whether you're preparing for an interview, studying for a certification, or simply curious to test your knowledge, our carefully crafted MCQs provide an excellent pathway to enhance your IoT expertise.


1 .
IoT stands for?
A)
Internet of Things
B)
Internet of Tracking
C)
Interaction of Things
D)
Introduction of Things

Correct Answer :   Internet of Things

Explanation :

IoT stands for Internet of Things, Internet of Things (IoT) describes the network of physical objects “things” that are embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the internet. These devices range from ordinary household objects to sophisticated industrial tools.
 
There are many IoT devices or things available today, including wearables, implants, vehicles, machinery, smartphones, appliances, computing systems, or any other item that can send and receive data.

2 .
The number of elements in the Open IoT Architecture?
A)
5 elements
B)
6 elements
C)
7 elements
D)
8 elements

Correct Answer :   7 elements

Explanation : The 7 main elements are : sensor middleware (X-GSN), cloud data storage, scheduler, service delivery and utility manager, request definition, request presentation, configuration and monitoring.

3 .
Which of the following is true about IoT?
A)
IoT has greater transparency, control, and performance.
B)
The term Things in the Internet of Things refers to anything and everything in day to day life
C)
Both (A) and (B)
D)
None of the above

Correct Answer :   Both (A) and (B)

4 .
In SOA, Service is termed as ______
A)
Network service
B)
Business service
C)
Software service
D)
Developer service

Correct Answer :   Business service

Explanation : Services are termed as business services. They are self-contained and logical.

5 .
API enables services portability between _______
A)
Devices
B)
Services
C)
Networks
D)
Systems

Correct Answer :   Systems

Explanation : API enables services portability between sysyems, I.e., service may be allocated to end-systems or servers, with possible relocation and replication throughout its lifecycle.

6 .
Global Sensor Network is built for _______
A)
Reducing cost and time for development
B)
Reducing cost and increasing time for development
C)
Increasing cost and decreasing time for development
D)
Increasing cost and increasing time for development

Correct Answer :   Reducing cost and time for development

Explanation : GSN is developed on the observation that most of the requirements for the application development sensor network are same. Having each sensor network development using its own custom software not only increases the cost but also takes time for development and deployment.

7 .
______ an open source stack for gateways and the edge.
A)
Eclipse Kura
B)
Red Hat
C)
Intercloud
D)
Eclipse Kapua

Correct Answer :   Eclipse Kura

Explanation : Eclipse Kura, an open source stack for gateways and edge, and Eclipse Kapua, the first open source IoT cloud platform.

8 .
_________ provides a middleware and application container for IoT gateway.
A)
Red Hat
B)
Bot 2 Bot
C)
Eclipse Kura
D)
Intercloud

Correct Answer :   Eclipse Kura

Explanation : Eclipse Kura provides a general purpose middleware and application container for IoT gateway services and includes everything for the edge, such as an application container or runtime environment.

9 .
IoT is an advanced automation and analytics system which deals with?
A)
electronic
B)
cloud messaging
C)
sensor, networking
D)
All of the above

Correct Answer :   All of the above

10 .
Active Engagement Features of IOT means?
A)
It makes the complete failure of the system.
B)
IoT makes things smart and enhances life through the use of data.
C)
IoT makes the connected technology, product, or services to active engagement between each other.
D)
None of the above

Correct Answer :   IoT makes the connected technology, product, or services to active engagement between each other.

Explanation : Active Engagement : Much of today's interaction with connected technology happens through passive engagement. IoT introduces a new paradigm for active content, product, or service engagement.

11 .
In Which year, the term "Internet of things" was coined?
A)
1998
B)
1999
C)
2000
D)
2001

Correct Answer :   1999

Explanation : The actual term “Internet of Things (IoT)” was coined by Kevin Ashton in 1999 during his work at Procter & Gamble. 

12 .
Which environment does Global Sensor Network work on?
A)
C
B)
C++
C)
JAVA
D)
CSS

Correct Answer :   JAVA

Explanation : GSN is expected to work in all standard computing environments. As Java is portable in nature which means that Java bytecode can execute on all platforms, GSN works on Java. C++, HTML and C are not portable in nature.

13 .
Open IoT manages the registration, data acquisition, deployment of sensors and interconnected of objects, through which network?
A)
X-GSN
B)
LSM
C)
GSN
D)
HTTP

Correct Answer :   X-GSN

Explanation : The core fundamental concept in X-GSN is the virtual sensor, which can represent not only physical devices but in general any abstract or concrete entity that observes features of any kind.

14 .
Internet of Things needs a lot of network connection. What is the proposed "white Space" radio standard called?
A)
WiMax
B)
Zigbee
C)
Weightless
D)
Bluetooth

Correct Answer :   Weightless

Explanation : White space is nothing but gaps that sit in the frequency band used to broadcast digital TV. The development of so called “Weightless standard” is for the use of TV white space and for IOT/M2M purpose. The main intention is to reduce the cost and power utilization.

15 .
What is the sensor/protocol used in GSN?
A)
MQTT protocol
B)
HTTP protocol
C)
XMPP protocol
D)
CoAP protocol

Correct Answer :   CoAP protocol

Explanation : Constrained Application Protocol is a specialized web transfer protocol which enables constrained devices to communicate over internet and it is required for GSN in transferring data stream.

16 .
Which layer in SOA delivers messages between applications?
A)
SOA registry
B)
ESB
C)
SOA supervisor
D)
Service Broker

Correct Answer :   ESB

Explanation : ESB(Enterprise Service Bus) is a group of components/ software which helps us to send and receive messages between the disparate applications. It is usually shown as a huge plump pipe in the architecture.

17 .
Which of the following is the way in which an IoT device is associated with data?
A)
Cloud
B)
Network
C)
Internet
D)
Automata

Correct Answer :   Cloud

Explanation : 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.

18 .
______ are the main components in IOT
A)
Cloud computing
B)
Low power embedded systems
C)
Availability of big data, networking connection
D)
All of the above

Correct Answer :   All of the above

19 .
The IPV4 developed in ______
A)
1960
B)
1970
C)
1974
D)
1983

Correct Answer :   1974

20 .
The IPV6 developed in ______
A)
1980
B)
1991
C)
1998
D)
2003

Correct Answer :   1998

21 .
The bit length of the IPV4 is ______
A)
16 bits
B)
32 bits
C)
64 bits
D)
128 bits

Correct Answer :   32 bits

22 .
The bit length of the IPV6 is ______
A)
16 bits
B)
32 bits
C)
64 bits
D)
128 bits

Correct Answer :   128 bits

23 .
What is the full form of IaaS?
A)
Infrastructure as a Service
B)
Internet as a Service
C)
Internet as a Software
D)
Infrastructure as a Software

Correct Answer :   Infrastructure as a Service

24 .
Which of the following class handles Publishing messages?
A)
Batch()
B)
Client()
C)
Server()
D)
Publish()

Correct Answer :   Client()

25 .
Which of the following is the java extension file in IoT?
A)
.c
B)
.py
C)
.jar
D)
.exe

Correct Answer :   .jar

26 .
What happens when service providers change their operating system and communication protocols?
A)
Only complexity arises
B)
Only Inoperability arises
C)
Inoperability and complexity arises
D)
None of the above

Correct Answer :   Inoperability and complexity arises

Explanation : Complexity arises when service providers change their operating system and communication protocols, which results in inoperability. Service providers use standard protocols and conventional interfaces to facilitate information among diverse services.

27 .
Which block is the central reference of meta-data for services?
A)
Service Broker
B)
SOA registry
C)
SOA supervisor
D)
ESB(Enterprise Service Bus)

Correct Answer :   SOA registry

Explanation : SOA registry is like a reference database of services. It describes what each service does, where they are located, and how they can communicate.

28 .
How many main components IoT mainly consists of?
A)
4
B)
5
C)
6
D)
7

Correct Answer :   4

Explanation : IoT architecture technology mainly consists of four major components: Sensors/Devices, Gateways and Networks, Cloud/Management Service Layer and Application Layer.

29 .
_______ are the devices that are able to emit, accept and process data over the network.
A)
Sensors
B)
Edge IT
C)
Gateways
D)
Data Acquisition

Correct Answer :   Sensors

Explanation : Sensors or Actuators are the devices that are able to emit, accept and process data over the network.

30 .
Which of the following IoT networks has a very short range?
A)
SigFox
B)
LPWAN
C)
Short Network
D)
Short-range Wireless Network

Correct Answer :   Short-range Wireless Network

Explanation : 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.

31 .
The IPV4 has a ____________ notation for addressing
A)
Hexa decimal
B)
Meta decimal
C)
Dotted decimals
D)
None of the above

Correct Answer :   Dotted decimals

32 .
Software that address the data protection is divided into
A)
2 segments
B)
3 segments
C)
4 segments
D)
5 segments

Correct Answer :   3 segments

33 .
IoT devices can easily lead to catastrophe without
A)
Cloud
B)
Devices
C)
Software
D)
Management system

Correct Answer :   Management system

34 .
Which of the following category is used for business to consumer process?
A)
Industrial IoT
B)
Personal IoT
C)
Group IoT
D)
Community IoT

Correct Answer :   Industrial IoT

35 .
Which blocks deals with performance issues?
A)
SOA supervisor
B)
SOA registry
C)
Service Broker
D)
ESB(Enterprise Service Bus)

Correct Answer :   SOA supervisor

Explanation : SOA supervisor is a traffic cop ensuring do not having issues. It deals with performance issues of the system so that appropriate service levels are met. If any of the services have performance problems it sends messages to the proper infrastructure to fix the issue.

36 .
________ is used to describe a perceived, quickly growing set of web based applications.
A)
Web 4.0
B)
Web 3.0
C)
Web 2.0
D)
Web 1.0

Correct Answer :   Web 2.0

Explanation : Web 2.0 to describe a perceived, quickly growing set of web based applications. A topic that has experienced extensive coverage involves the relationship between Web 2.0 and service oriented architectures.

37 .
________ in the IoT Architecture is the hardware and software gateways that analyze and pre-process the data before transferring it to the cloud.
A)
Edge IT
B)
Gateways
C)
Data center
D)
Data Acquisition

Correct Answer :   Gateways

Explanation : Edge IT : Edge in the IoT Architecture is the hardware and software gateways that analyze and pre-process the data before transferring it to the cloud.

38 .
What is the full form of the LPWAN?
A)
Long Power Wide Area Network
B)
Low Protocol Wide Area Network
C)
Long Protocol Wide Area Network
D)
Low Power Wide Area Network

Correct Answer :   Low Power Wide Area Network

Explanation : 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.

39 .
An IoT network is a collection of ______ devices.
A)
Signal
B)
Interconnected
C)
Machine to Machine
D)
Network to Network

Correct Answer :   Interconnected

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

40 .
Which is the future application of IoT?
A)
Role of green IoT system
B)
Secure communication
C)
QoS in communication
D)
Multimedia communication

Correct Answer :   Role of green IoT system

41 .
API enables services portability between ______
A)
Devices
B)
Services
C)
Systems
D)
Networks

Correct Answer :   Systems

Explanation : API enables services portability between sysyems, I.e., service may be allocated to end-systems or servers, with possible relocation and replication throughout its lifecycle.

42 .
API architecture not only includes critical elements but also caters for _______
A)
System
B)
Network
C)
Devices
D)
Multi homing

Correct Answer :   Multi homing

Explanation : API Architecture not only includes critical elements but also caters for multi homing, mobile networks with dynamic membership, and third party persistent storage based on indirection.

43 .
The SOA architecture is divided into how many layers?
A)
2 layers
B)
3 layers
C)
4 layers
D)
5 layers

Correct Answer :   2 layers

Explanation : The first which has direct relevance to the business as it carries out business functions. The second layer is the technical layer which talks about managing computer resources like a database, web server etc.

44 .
Ubiquitous service provision depends on _________
A)
QoS
B)
Routing
C)
Management
D)
Interoperability

Correct Answer :   Interoperability

Explanation : Ubiquitous service provision depends on interoperability, not only for provisioning of a standard QoS controlled IP bearer, but also for cross domain naming, security, mobility, multicast, including fair compensation for utility provisioning.

45 .
What is the main purpose of WoT (Web of Things) in the IoT?
A)
Reduce the security
B)
Increase the cost
C)
Complex the development
D)
Improve the usability and interoperability

Correct Answer :   Improve the usability and interoperability

Explanation : 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.

46 .
What is the Arduino UNO?
A)
Software
B)
Hardware device
C)
Network
D)
None of the above

Correct Answer :   Hardware device

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

47 .
The rack and pinion is an example of a ___________ actuator
A)
Electrical actuator
B)
Hydraulic actuator
C)
Mechanical actuator
D)
All of the above

Correct Answer :   Mechanical actuator

48 .
What is the standard form of MQTT?
A)
Message Queue Telemetry Transport
B)
Message Queue Time Transport
C)
Message Queue Transport Telemetry
D)
None of the above

Correct Answer :   Message Queue Telemetry Transport

49 .
All portals are embedded into a single supercomputer, known as _________
A)
Web
B)
System
C)
Internet
D)
Network

Correct Answer :   Web

Explanation : The web is now one, enormous, global computer. Our devices are them phones, tablets, TVS, watches, glasses, etc. These all are all portals into this single computer, known as Web.

50 .
_________is uniquely identifiable embedded computing devices.
A)
Cloud
B)
IoT
C)
Bigdata
D)
Internet

Correct Answer :   IoT

Explanation : The IoT is the part of the Internet that is made up of “uniquely identified embedded computing devices,” as Wikipedia status. Just like the world Wide Web is a Internet, so does the IoT.

51 .
What is the role of Big Data in IoT's Smart Grid architecture?
A)
Store data
B)
Locked the data
C)
Filter the data
D)
None of the above

Correct Answer :   Store data

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

52 .
What is the standard form of SMQTT?
A)
Sent Message Queue Transport Telemetry
B)
Success Message Queue Telemetry Transport
C)
Sequence Message Queue Telemetry Transport
D)
Secure Message Queue Telemetry Transport

Correct Answer :   Secure Message Queue Telemetry Transport

53 .
For routing _______ protocols are used in 6LOWPAN routing
A)
RPL protocol
B)
LOADng protocol
C)
Both (A) and (B)
D)
None of the above

Correct Answer :   Both (A) and (B)

54 .
Which of the following option allows us to monitor the application?
A)
Boot
B)
Actuators
C)
Endpoints
D)
Hypermedia

Correct Answer :   Boot

55 .
What is the role of Cloud in smart grid architecture of IoT?
A)
Security
B)
Store data
C)
Collect data
D)
Manage data

Correct Answer :   Manage data

Explanation : Cloud to edge Middleware: manage data and edge devices, data streaming and event processing, control authorized access.

56 .
What is the role of Gateway in smart grid architecture of IoT?
A)
Security
B)
Collect data
C)
Store data
D)
Manage data

Correct Answer :   Collect data

Explanation : Gateway : collects data from sensors, abstract protocols, perform local autonomous decision, transfer information.

57 .
In Arduino IDE, IDE stands for?
A)
Integrated Digital Environment
B)
Integrated Development Environment
C)
Integrated Development Embedded
D)
Instruction Development Environment

Correct Answer :   Integrated Development Environment

Explanation : Arduino consists of a circuit board, which can be programed (referred to as a microcontroller) and a ready-made software called Arduino IDE (Integrated Development Environment).

58 .
Does Arduino is open-source?
A)
TRUE
B)
FALSE
C)
Can be true or false
D)
Can not say

Correct Answer :   TRUE

Explanation : Arduino is a prototype platform (open-source)

59 .
IoT gateway must provide__________
A)
Data storage
B)
Security with hardware
C)
Protocol abstraction
D)
Simple and fast installation

Correct Answer :   Protocol abstraction

Explanation :

IoT gateway must provide :
 
* Protocol abstraction
* Computing and I / O performance
* Integration communication capability.

60 .
What does VNC stand for :
A)
Virtual Network Computing
B)
Various Network computers
C)
Virtual Network Communication
D)
None of the above

Correct Answer :   Virtual Network Computing

61 .
What is the purpose of bin directory in Linux environment?
A)
Contains user home directories
B)
Containing configuration files
C)
Contains essential device files
D)
Contains essential binary commands

Correct Answer :   Contains essential binary commands

62 .
What is Inter Integrated Communication(I2C)?
A)
An application layer protocol
B)
A cellular communication protocol
C)
An OS for distributed network communication
D)
A networking communication protocol for multi-master support

Correct Answer :   A networking communication protocol for multi-master support

63 .
What is the real example of a smart grid device in IoT?
A)
Television
B)
Smart Meters
C)
Smart Speaker
D)
Mobile phone

Correct Answer :   Smart Meters

Explanation : 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.

64 .
What is the full form of ICT?
A)
InterConnect Technology
B)
Infer Communication Topology
C)
Information and Communication Technology
D)
Information and Connection Topology

Correct Answer :   Information and Communication Technology

Explanation : 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.

65 .
Which of the following frequencies is correct for the Galileo gen 2 board?
A)
400 MHz
B)
350 MHz
C)
300 MHz
D)
250 MHz

Correct Answer :   400 MHz

Explanation : 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.

66 .
What is the standard form of LLN?
A)
Lossy Network
B)
Low Lossy Network
C)
Lowpower and Lossy Network
D)
None of the above

Correct Answer :   Lowpower and Lossy Network

Explanation :

Lowpower and Lossy Networks (LLNs) constitute the wireless infrastructure for a variety of IoT applications.

67 .
The operations of the protocol requires __________ links
A)
Unidirectional
B)
Bidirectional
C)
Either uni-directional or bi-directional
D)
None of the above

Correct Answer :   Bidirectional

68 .
IoT security management includes ________
A)
Data storage
B)
Protocol abstraction
C)
Simple and fast installation
D)
Security with hardware

Correct Answer :   Security with hardware

Explanation :

IoT security management :
* Improves security with hardware
* Enable secure communication to sensors
* End to End Security from Sensor to Cloud.

69 .
IoT data scalability includes ________
A)
Data storage
B)
Protocol abstraction
C)
Security with hardware
D)
Simple and fast installation

Correct Answer :   Data storage

Explanation :

IoT Data Scalability :
 
* Data storage at the edge
* Hierarchical clouds.
* Data and Event processing at the edge

70 .
In ________ layer, various application platforms are built as required by the services needs of smart grid.
A)
Data layer
B)
Perception layer
C)
Smart network layer
D)
Smart Application layer

Correct Answer :   Smart Application layer

Explanation : In the smart application layer, various application platforms are built as required by the services needs of smart grid. The application platform as required by the services needs of smart grid.

71 .
________ layer can be divided into the data access network and the core network.
A)
Data layer
B)
Perception layer
C)
Smart network layer
D)
Smart Application layer

Correct Answer :   Smart network layer

Explanation : Smart network layer can be divided into the data access network and the core network. The data on perception terminals and interaction terminals is uploaded to the power access network and the Internet separately according to its type and security level.

72 .
How many Analog Inputs does Arduino Uno R3 has?
A)
5
B)
6
C)
7
D)
8

Correct Answer :   6

Explanation : Arduino Uno R3 has 6 Analog Inputs.

73 .
Which of the following is the Programming Interface for Arduino mini 05?
A)
Native USB
B)
USB via FTDI
C)
USB via ATMega16U2
D)
FTDI-Compatible Header

Correct Answer :   FTDI-Compatible Header

Explanation : FTDI-Compatible Header is the Programming Interface for Arduino mini 05.

74 .
How many digital pins are there on the UNO board?
A)
14
B)
15
C)
16
D)
17

Correct Answer :   14

Explanation : It has 14 digital pins input/output pins of which 6 can be used as PWM output, 6 analog inputs, a USB connection, a power jack, a reset button and more.

75 .
A program written with the IDE for Arduino is called_________
A)
Sketch
B)
IDE source
C)
Source code
D)
Cryptography

Correct Answer :   Sketch

Explanation : Sketches are saved on the development computer as text files with the file extension .ino. Arduino software (IDE) pre-1.0 saved sketches with the extension file .pde.

76 .
Which protocol is used to link all the devices in the IoT?
A)
UDP
B)
HTTP
C)
TCP/IP
D)
Network

Correct Answer :   TCP/IP

Explanation : The Internet of Thing is the global system of interconnected computer networks that use the Internet Protocol Suite (TCP/IP) to link billions of devices worldwide.

77 .
________enables seamless integration of LoWPAN devices with internet leveraging.
A)
RFID/NFC
B)
IETF 6LoWPAN
C)
IEFT CoAP
D)
IEEE 802.15.4.LoWPAN

Correct Answer :   IETF 6LoWPAN

Explanation : IETF 6LoWPAN enables seamless integration of LoWPAN devices with internet leveraging IPv6 large address space and appln. Layer protocol reuse.

78 .
________ tags, devices, smart phones useful in identification.
A)
IEFT CoAP
B)
IETF 6LoWPAN
C)
RFID/NFC
D)
IEEE 802.15.4.LoWPAN

Correct Answer :   RFID/NFC

Explanation : RFID/NFC – tags, devices, smart phones useful in product / object identification and gathering associated information.

79 .
________specification defining the PHY and MAC layer of low power devices.
A)
RFID/NFC
B)
IEFT CoAP
C)
IETF 6LoWPAN
D)
IEEE 802.15.4.LoWPAN

Correct Answer :   IEEE 802.15.4.LoWPAN

Explanation : IEEE 802.15.4.LoWPAN – specification defining the PHY and MAC layer of low power devices supporting 250 Kb/s data rate, small packet size 127 bytes.

80 .
________ resources are identified by Uniform Resource Identifiers.
A)
CoAP
B)
HMTP
C)
MQTT
D)
TCP/IP

Correct Answer :   CoAP

Explanation : CoAP is an application layer protocol (IETF draft) for resource constrained devices. Adheres to Restful approach for managing resources and support mapping to HTTP. CoAP resources are identified by Uniform Resource Identifiers.

81 .
In order to promote _________ the government should employ more management.
A)
Company based
B)
Enterprise-based
C)
eGovermnent related
D)
Business oriented platform

Correct Answer :   eGovermnent related

Explanation : In order to promote the eGovermnent information system evolution and improve their management, the local/regional/ national governments should employ more management intelligence by utilizing an IoT platform.

82 .
The ________ may become an important facilitator and stimulate for the modern economy.
A)
Company based
B)
Enterprise-based
C)
eGovermnent related
D)
Business oriented platform

Correct Answer :   Business oriented platform

Explanation : The pure business oriented IoT may become an important facilitator and stimulus for the modern economy, by attracting investments and developing strategic industry sectors.

83 .
IoT promotes the creation of IoT terminal industry ________
A)
Things
B)
Clusters
C)
Devices
D)
Network

Correct Answer :   Clusters

Explanation : IoT platform promotes the creation of IoT terminal Industry clusters, which will greatly attract commercial capital investments in the IoT modern services.

84 .
Who will use their own IoT business models?
A)
IaaS
B)
PaaS
C)
SaaS
D)
Service provider

Correct Answer :   Service provider

Explanation : IoT service provider will use their own IoT business models, architectures, and operating platforms.

85 .
The core element of architecture of smart city is ________
A)
Integrated Information Provider
B)
Management center
C)
Mobile Unified Service
D)
Urban Application Platform

Correct Answer :   Integrated Information Provider

Explanation : An IoT platform, which could serve as a generic architectural foundation for a smart city development has an Integrated Information Provider as its core element.

86 .
What is the full form of IANA?
A)
Inter-Assessment-Number-Access
B)
Internet-Association-Numbers-Authority
C)
Internet-Assigned-Numbers-Authority
D)
International-Aid-for-Network-Authority

Correct Answer :   Internet-Assigned-Numbers-Authority

Explanation : 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.

87 .
Which of the following devices is used to measure the gases or liquid?
A)
Gas Sensor
B)
Smoke Sensor
C)
Pressure sensor
D)
Optical Sensor

Correct Answer :   Pressure sensor

Explanation : 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.

88 .
Which of the following layers provides end-to-end communication in IoT?
A)
Logical layer
B)
Transport layer
C)
Session layer
D)
Data link layer

Correct Answer :   Transport layer

Explanation : 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.

89 .
What is the standard port number of secure MQTT?
A)
8881
B)
8883
C)
8887
D)
8888

Correct Answer :   8883

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

90 .
An IoT ________ center is envisaged as an important part of the generic IoT platform to unify the organization.
A)
Integrated Information
B)
Individual Integration
C)
Individual Information
D)
Individual and Integrated Information

Correct Answer :   Integrated Information

Explanation : An IoT Integrated Information centre is envisaged as an important part of the generic IoT platform to unify the organization, implementation, and planning of the integrated IoT application.

91 .
Which interface does the fingerprint sensor use?
A)
I2P interface
B)
SPI interface
C)
CoAP interface
D)
UART interface

Correct Answer :   UART interface

Explanation : 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.

92 .
Which of the following protocols is used by USART?
A)
RS32
B)
RS39
C)
4RS85
D)
RS232C

Correct Answer :   RS232C

Explanation : 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.

93 .
What is the standard length of MAC address?
A)
16 bits
B)
32 bits
C)
48 bits
D)
54 bits

Correct Answer :   48 bits

94 .
Galileo Gen 2 board was developed by which company?
A)
AT & T
B)
Intel
C)
AMD
D)
Motorola

Correct Answer :   Intel

Explanation : Intel Galileo is the first in the line of boards based on intelx86 architecture and is designed for education communities.

95 .
Intel Galileo has the main feature of?
A)
Intel Quart
B)
Support for openCV
C)
Support PCI Express
D)
Onboard real time clock

Correct Answer :   Intel Quart

Explanation : Intel Galileo features the Intel quart SoC X1000, the first product from the Intel Quart technology family of low power, small-core products. Intel Quart represents Intel’s attempt to compete within markets such as the Internet of Things and Wearable Computing.

96 .
The Raspberry Pi is defined as the?
A)
Nano Computer
B)
Mini computer
C)
Micro Computer
D)
Mega Computer

Correct Answer :   Mini computer

Explanation : The Raspberry Pi is defined as the mini computer.

97 .
What are the parameters that are default values?
A)
Speed and Parity
B)
Port_Name and Bits
C)
Speed and Port_Names
D)
Stop bit and Flow Control

Correct Answer :   Speed and Port_Names

Explanation : Port_Name : Linux automatically assigns different names for different types of serial connectors

98 .
What do we use to connect TV to RPi?
A)
Male HDMI
B)
Female HDMI
C)
Male HDMI and Adapter
D)
Female HDMI and Adapter

Correct Answer :   Male HDMI and Adapter

Explanation : HD TV and most LCD Monitors can be connected using a full-size male HDMI cable, and with an inexpensive adapter if DVI is used. HDMI version 1.4 cable is recommended.

99 .
Which of the following is not a types of Raspberry Pi?
A)
Raspberry Pi Zero W
B)
Raspberry Pi Alternatives
C)
Raspberry Pi 3 Model B+
D)
Raspberry Pi 3 Model A+

Correct Answer :   Raspberry Pi 3 Model A+

Explanation : The types of Raspberry Pi are Raspberry Pi Alternatives, Raspberry Pi Zero W, and Raspberry Pi 3 Model B+.

100 .
Which among the following is more powerful?
A)
Rasberry Pi 3 Model
B)
Rasberry Pi 2 Model
C)
Galieo Gen 2 Board
D)
Galieo Gen 1 Board

Correct Answer :   Rasberry Pi 3 Model

Explanation : The latest iteration, the Pi 3 Model B, replaced the PI 2 Model B. It is more powerful than the older Galieo Gen 2, featuring a 1.2 GHz CPU and 1 Gb RAM. The Pi, however, does not have any flash memory.

101 .
Periferal Component Interconnect (PCI) Express interconnects which modules?
A)
Micro SD card
B)
Real Time Clock
C)
Serial communication
D)
WIfi, Bluetooth, GSM cards

Correct Answer :   WIfi, Bluetooth, GSM cards

Explanation : PCI is a high speed serial computer expansion bus standard. It includes higher maximum system bus throughput, lower I/O pin count and smaller physical footprint.

102 .
What is the full form of HDLC?
A)
High Data Level Control
B)
High-level Data Link Control
C)
Higher Data Link Communication
D)
Higher Data Level Communication

Correct Answer :   High-level Data Link Control

Explanation : 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.

103 .
Which of the following "bit" defines the address bit in the control register?
A)
RXWake
B)
ML
C)
MM
D)
None of the above

Correct Answer :   MM

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

104 .
What is another name for I2C?
A)
UART
B)
USART
C)
Two wire interfaces
D)
Signal wire interface

Correct Answer :   Two wire interfaces

Explanation : 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).

105 .
The 10/100Mbit Ethernet support enables the board to connect to _______
A)
LAN
B)
MAN
C)
WAN
D)
WLAN

Correct Answer :   LAN

Explanation : The 10/100 Mbit Ethernet support enables the board to be connected to a LAN. It also enables to accessing the linux shell.

106 .
Which bus is a standard bus derived by ARM with aim to support efficient on chip?
A)
Futurebus
B)
Serial Attached SCSI
C)
Advanced Micro Bus
D)
Scalable Coherent Interface

Correct Answer :   Advanced Micro Bus

Explanation : AMB is used for simple cost effective design transfer, pipelined transfer operation, and multiple bus masters. It is known for high performance and high clock synthesizable design, providing high bandwidth channel between processor and peripherals.

107 .
_______ bit PWM for more precise control of servos and smoother response.
A)
14 bit
B)
12-bit
C)
8 bit
D)
4 bit

Correct Answer :   12-bit

Explanation : 12-bit PWM for more precise control of servos and smoother response.

108 .
How many Input/Output pins on board Raspberry Pi3 has?
A)
10
B)
20
C)
30
D)
40

Correct Answer :   40

Explanation : The Raspberry Pi3 has 40 Input/Output pins on board.

109 .
Which operating system Raspberry Pi has?
A)
Linux
B)
NetBSD
C)
OpenBSD
D)
All of the above

Correct Answer :   All of the above

Explanation : The foundation of Raspberry Pi provides an operating system such as Linux. It also provides a non-Linux operating system, such as OpenBSD, NetBSD, HelenOS, etc.

110 .
LPC 2148 pro development board has _________ on chip memory.
A)
512k
B)
625k
C)
745k
D)
1000k

Correct Answer :   512k

Explanation : LPC 2148 Pro Development Board is a powerful development platform based on LPC2148 ARM7TDMI micro controller with 512k on-chip memory.

111 .
Which LCD display is present in LPC 2148 Development Board?
A)
8*8 LED
B)
2*32 LCD
C)
2*16 LCD on-chip
D)
2*16 LCD connected peripherally

Correct Answer :   2*16 LCD on-chip

112 .
Who is the founder of LPC2148 board?
A)
Intel
B)
Philips
C)
Atmel
D)
Microsoft

Correct Answer :   Philips

Explanation : The NXP (founded by Philips) LPC2148 is an ARM7TDMI-S based high-performance 32-bit RISC Microcontroller with Thumb extensions 512KB on-chip Flash ROM with In-System Programming (ISP) and In-Application Programming (IAP), 32KB RAM, Vectored Interrupt Controller, Two 10bit ADCs with 14 channels, USB 2.0 Full Speed Device Controller, Two UARTs, one with full modem interface. Two I2C serial interfaces, Two SPI serial interfaces Two 32-bit timers, Watchdog Timer, PWM unit, Real Time Clock with optional battery backup, Brown out detect circuit General purpose I/O pins. CPU clock up to 60 MHz, On-chip crystal oscillator and On-chip PLL.

113 .
Which IDE is supported by LPC2148 board?
A)
Walldorf
B)
Code Blocks
C)
AVR Studio 4
D)
Keil uVersion 4

Correct Answer :   Keil uVersion 4

114 .
What do you mean by micro in microcontroller?
A)
Size of a controller
B)
Distance between 2 IC’s
C)
Distance between 2 pins
D)
Distance between 2 transistors

Correct Answer :   Distance between 2 transistors

Explanation : Micro means 10-6 which gives the distance between 2 element transistors which is called as Micron Technology.

115 .
What is the bit size of the 8051 microcontroller?
A)
8-bit
B)
16-bit
C)
32-bit
D)
64-bit

Correct Answer :   8-bit

Explanation : It is an 8-bit microcontroller which means most of the operations are limited to 8 bit only.

116 .
Which pin provides a reset option in 8051?
A)
Pin 2
B)
Pin 7
C)
Pin 9
D)
Pin 11

Correct Answer :   Pin 9

Explanation : Reset pin is utilized to set the micro controller 8051 to its primary values, whereas the micro controller is functioning or at the early beginning of application. The reset pin has to be set elevated for two machine rotations.

117 .
Number of pins in 8051 microcontroller with ________ package.
A)
40 pin with LLC
B)
40 pin with DIP
C)
60 Pin with QFP
D)
60 pin with QFP

Correct Answer :   40 pin with DIP

Explanation : The 8051 family members have different packages, such as DIP(Dual In Line), QFP(Quad Flap Package), LLC(Leadless Chip Carrier) they all have 40 pins that are dedicated to different functions. Especially 8051 have a Dual in Line package.

118 .
PSEN stands for ________
A)
Program Select Enable
B)
Program Store Enable
C)
Peripheral Store Enable
D)
Peripheral Select Enable

Correct Answer :   Program Store Enable

Explanation : This is an output pin. In an 8031-based system in which an external ROM holds the program code, this pin is connected to the OE pin of the ROM.

119 .
Function of IE1 in TCON register?
A)
External interrupt 0 single type control bit
B)
External interrupt 1 to be triggered by a falling edge signal
C)
External interrupt 1 Edge flag. Not related to timer operations
D)
External interrupt 1 Edge flag. Not related to timer operations

Correct Answer :   External interrupt 1 Edge flag. Not related to timer operations

Explanation : TCON register has 8 bits. 3rd bit has an IE1 register. This is an external interrupt.

120 .
Which timer register has both timers in it?
A)
TMOD
B)
TCON
C)
Both TMOD and TCON
D)
None of the above

Correct Answer :   TMOD

Explanation : In the TMOD register, lower 4 bits are set for timer0 and the upper 4 bits are set aside for timer1. In each case, the lower 2 bits are used to set the timer mode and upper 2 bits to specify the operation.

121 .
What is the processor used by ARM7?
A)
8-bit RISC
B)
8-bit CISC
C)
32-bit RISC
D)
32-bit CISC

Correct Answer :   32-bit RISC

Explanation : ARM7 is a group of older 32-bit RISC ARM processor cores licensed by ARM Holdings for microcontroller use. The ARM7 core family consists of ARM700, ARM710, ARM7DI, ARM710a, ARM720T, ARM740T, ARM710T, ARM7TDMI, ARM7TDMI-S, ARM7EJ-S.

122 .
What is the instruction set used by ARM7?
A)
8-bit instruction set
B)
16-bit instruction set
C)
32-bit instruction set
D)
64-bit instruction set

Correct Answer :   16-bit instruction set

Explanation : ARM introduced the Thumb 16-bit instruction set providing improved code density compared to previous designs. The most widely used ARM7 designs implement the ARMv4T architecture, but some implement ARM3 or ARMv5TEJ.

123 .
The initial codebase is originated from ________
A)
Equinox
B)
IBM VisualAge
C)
Borland VisualAge
D)
Red Hat VisualAge

Correct Answer :   IBM VisualAge

Explanation : The initial codebase originated from IBM VisualAge. The Eclipse software development kit, which includes the Java development tools, is meant for Java developers.

124 .
It was one of the first IDE to run under ________ and it runs without problem under IcedTea.
A)
GNU Classpath
B)
GNU General Public License
C)
Both (A) and (B)
D)
Neither GNU nor GPL

Correct Answer :   GNU Classpath

Explanation : It was one of the first IDE to run under GNU Classpath and it runs without problem under IcedTea.

125 .
UML stands for_______
A)
User Module Language
B)
User Modeling Language
C)
Unified Module Language
D)
Unified Modeling Language

Correct Answer :   Unified Modeling Language

Explanation : One of the example of plug-ins include for Unified Modeling Language, for sequence and other UML diagram, a plug in for DB Explorer, and many more.

126 .
Which of the following is the example of a short-range wireless network?
A)
VPN
B)
WWW
C)
Wi-Fi
D)
Internet

Correct Answer :   Wi-Fi

Explanation : 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.

127 .
Which of the following languages does GSN work on?
A)
JAVA
B)
C++
C)
Python
D)
Android

Correct Answer :   JAVA

Explanation : 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.

128 .
MVS stands for _________
A)
Memory Visual Studio
B)
Microsoft Visual Studio
C)
Microsoft Virtual Studio
D)
Memory Virtual Studio

Correct Answer :   Microsoft Visual Studio

Explanation : In the mid-1990, a number of powerful commercial development environment were available; Microsoft Visual Studio was becoming a more general purpose tools platform.

129 .
The consortium's operating principles assured that open source community would control ________
A)
Code
B)
Consortium
C)
Both (A) and (B)
D)
None of the above

Correct Answer :   Both (A) and (B)

Explanation : The consortium’s operating principles assured that open source community would control the code and the commercial consortium would drive “marketing” and commercial relations.

130 .
The ________ is responsible for defining a structure for plug-ins.
A)
Editors
B)
Runtime
C)
JFace UI
D)
Standard Widget Toolkit

Correct Answer :   Runtime

Explanation : The eclipse runtime defines the plug-ins on which all other plug-ins depends. The runtime is responsible for defining a structure for plug-ins and the implementation detail behind them.

131 .
When the clock line SCL is high, the SDA is ____ transitioned.
A)
Low
B)
High
C)
Medium
D)
None of the above

Correct Answer :   Low

Explanation : 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.

132 .
Which of the following protocols does the secure digital card application use?
A)
MQTT
B)
HTTPS
C)
XMPP
D)
SPI

Correct Answer :   SPI

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

133 .
What is the use of Thermostat in Nest Thermostat E?
A)
Save energy
B)
Show the use of energy
C)
Supports in some devices only
D)
Won’t work at some conditions

Correct Answer :   Save energy

Explanation : The thermostat controls half of our energy bills. Independent studies shows that Nest saved people an average of 10% to 20% on heating and 15% on cooling.

134 .
What is the drawback of using Lockitron?
A)
Tough installation
B)
Wastage of more energy
C)
Supports in some devices only
D)
Won’t work at some conditions

Correct Answer :   Supports in some devices only

135 .
Which devices measures gases or liquid?
A)
Touch sensor
B)
Pressure sensor
C)
Proximity sensor
D)
Temperature sensor

Correct Answer :   Pressure sensor

Explanation : The pressure sensor is a device for pressure measurement of gases or liquid. Pressure is an expression of the force required to stop a fluid from expanding.

136 .
Which sensor measures the pressure relative to perfect vacuum?
A)
Gauge pressure sensor
B)
Vacuum pressure sensor
C)
Absolute pressure sensor
D)
Differential pressure sensor

Correct Answer :   Absolute pressure sensor

Explanation : Pressure sensor can be classified in terms of pressure ranges they measure, temperature ranges of operation, and most importantly the type of pressure they measure. Absolute pressure sensor is a sensor that measures the pressure relative to perfect vacuum.

137 .
Which sensor measure the pressure relative to atmospheric pressure?
A)
Vacuum pressure sensor
B)
Absolute pressure sensor
C)
Differential pressure sensor
D)
Gauge pressure sensor

Correct Answer :   Gauge pressure sensor

Explanation : This sensor measures the pressure relative to atmospheric pressure. A tire pressure gauge is an example of gauge pressure measurement; when it indicates zero, then the pressure it is measuring is the same as the ambient pressure.

138 .
What is the stability of pressure sensor?
A)
+/- 0.35% FS
B)
+/-0.5% FS
C)
+/-0.75% FS
D)
+/-1.0% FS

Correct Answer :   +/- 0.35% FS

Explanation : One of the main feature of pressure sensor is its stability which is +/-0.35% FS(Full Scale).

139 .
Which of the following touch sensors is used in a cell phone?
A)
Follow sensor
B)
Human sensor
C)
Resistive touch sensors
D)
Capacitive touch sensor

Correct Answer :   Capacitive touch sensor

Explanation : 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.

140 .
How many types of capacitive touch sensors in IoT?
A)
One Type
B)
Two types
C)
Five types
D)
Seven types

Correct Answer :   Two types

Explanation :

Two types of capacitive touch sensors in IoT :
 
* Projected-capacitive sensing
* Surface-capacitive sensing

141 .
Which axis accelerometer is mostly used in IOT?
A)
1- axis
B)
2- axis
C)
3- axis
D)
Combination of all

Correct Answer :   3- axis

Explanation : It uses 3-axis accelerometer. It detect orientation, shake, tap, double tap, fall, tilt, motion, positioning, shock or vibration.

142 .
________ sensor is used for tracking rotation or twist.
A)
Pressure
B)
Proximity
C)
Gyroscope
D)
Temperature

Correct Answer :   Gyroscope

Explanation : Accelerometers in mobile phones are used to detect the orientation of the phone. The gyroscope adds an additional dimension to the information supplied by the accelerometer by tracking rotation or twist.

143 .
How many logic signals are there in the SPI protocol?
A)
5 signals
B)
6 signals
C)
7 signals
D)
9 signals

Correct Answer :   5 signals

Explanation :

There are 5 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)

144 .
What does MOSI mean?
A)
MOSI is a network line.
B)
MOSI is a data line that sends the data from master to slave.
C)
MOSI is a clock signal that sends the clock signals from master to slave.
D)
None of the above

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

Explanation :

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.

145 .
Which sensor is used for monitor electric distribution and switching equipment temperature?
A)
ML24
B)
DHT19
C)
ESP8266
D)
RFM3200

Correct Answer :   RFM3200

Explanation : The RFM3200 is a wireless battery-free temperature sensor. This flexible sensor is designed to monitor environmental and material temperatures in a wide range of settings. Typical applications include environmental temperature monitoring, bulk material temperature monitoring, data center chiller and cooling monitoring, as well as cold chain monitoring at key shipment centers.

146 .
What is humidity sensor?
A)
Sundial
B)
Gyroscope
C)
Sesimoscope
D)
Hygrometer

Correct Answer :   Hygrometer

Explanation :

Humidity sensors are electronic devices enabling you to measure the environment’s humidity and convert the data into a corresponding electrical signal that can be used for different purposes. You might have heard a different humidity sensor name: Hygrometers! They are also called hygrometers but “humidity sensor” is more common.

Humidity measurement instruments usually rely on measurements of some quantity such as temperature, pressure, mass or a mechanical or electrical change etc,.

147 .
Electronic type hygrometers are divided into how many types?
A)
4 types
B)
3 types
C)
2 types
D)
1 type

Correct Answer :   2 types

Explanation : Electronic type hygrometers or humidity sensors can broadly divided into two categories: one employs capacitive sensing principle, while other use resistive effects.

148 .
________ sensors are suitable for environments that have high temperatures.
A)
Thermal Conductivity
B)
Resistive Sensor
C)
Capacitive Sensor
D)
None of the above

Correct Answer :   Thermal Conductivity

Explanation : These sensors are suitable for use in environments that have high temperatures. They measure humidity by calibrating the difference between the thermal conductivity of dry air and that of moist air.

149 .
Which sensor can detect nearby objects?
A)
Touch sensor
B)
Proximity sensor
C)
Pressure sensor
D)
Humidity sensor

Correct Answer :   Proximity sensor

Explanation : A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation, and looks for a change in the return signal.

150 .
Which proximity sensor detects positioning of an object?
A)
Magnetic Proximity Sensor
B)
Optical Proximity Sensor
C)
Inductive Proximity Sensor
D)
Capacitive Proximity Sensor

Correct Answer :   Optical Proximity Sensor

151 .
What is the sensing range for magnetic proximity sensors?
A)
90mm
B)
100mm
C)
110mm
D)
120mm

Correct Answer :   120mm

Explanation : Magnetic proximity sensors have no electrical noise effect and it can work on DC, AC, AC/DC. These types of sensors have highest sensing range upto 120mm.

152 .
Which sensor is used in mobile phones?
A)
Weight sensor
B)
Humidity sensor
C)
Temperature sensor
D)
Capacitive touch sensor

Correct Answer :   Capacitive touch sensor

Explanation : Capacitive touch sensors are widely used in most of the portable devices like mobile phones and MP3 players. The reason for this development is durability, robustness, attractive product design and cost.

153 .
How many types the capacitive touch sensors are classified?
A)
2 types
B)
3 types
C)
4 types
D)
5 types

Correct Answer :   2 types

Explanation :

There are two types of capacitive touch sensors :

1. surface capacitive sensing
2. Projected capacitive sensing

* In surface capacitive sensing, an insulator is applied with a conductive coating on one side of its surface.
* In projected capacitive sensing, the whole surface is not changed, but an X-Y grid conductive material is placed between two insulating materials.

154 .
What is the frequency rate of z-wave?
A)
708.49 GHz
B)
888.42 GHz
C)
908.42 GHz
D)
928.49 GHz

Correct Answer :   908.42 GHz

Explanation : 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.

155 .
What is another name of the tactile sensor?
A)
Weight sensor
B)
Touch sensor
C)
Imaging sensor
D)
Proximity sensor

Correct Answer :   Touch sensor

Explanation : 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.

156 .
Perfect resolution is possible when?
A)
sampling rate less than twice the bandwidth of the signal
B)
sampling rate greater than twice the bandwidth of the signal
C)
sampling rate less than thrice the bandwidth of the signal
D)
sampling rate greater than thrice the bandwidth of the signal

Correct Answer :   sampling rate greater than twice the bandwidth of the signal

Explanation : If an ADC operates at the sampling rate greater than twice the bandwidth of the signal, then perfect reconstruction is possible given an ideal ADC and neglecting quantization error.

157 .
Nyquist rate is defined as _________
A)
twice the lowest frequency
B)
twice the highest frequency
C)
trice the lowest frequency
D)
trice the highest frequency

Correct Answer :   twice the highest frequency

Explanation : Nyqist rate, defined as twice the highest frequency of interest, then all frequencies in the signal can be reconstructed.

158 .
Gateway provides the connection between _________ and _________
A)
Network and Cloud
B)
Controller and device
C)
Network and Controller
D)
Cloud and controller

Correct Answer :   Cloud and controller

Explanation : An Internet of Things (IoT) gateway is a physical device or software program that serves as the connection point between the cloud and controller, sensors and intelligent devices.

159 .
Which mode assumes that it is the gateway's responsibility to connect to the central repository server?
A)
Client Initiated Bootstrap
B)
Bootstrap
C)
Factory Bootstrap
D)
Server limited Bootstrap

Correct Answer :   Client Initiated Bootstrap

Explanation : Client initiated bootstrap mode assumes that it is the gateway’s responsibility to connect to the central repository server and download the proper version of the software. In this scenario, the gateway is required to have lightweight bootstrap software installed so it can communicate with the software management server.

160 .
Wind River Intelligent Device offers what?
A)
Gateway security
B)
Device Connectivity
C)
Application enablement
D)
All of the above

Correct Answer :   All of the above

Explanation :

Wind River Intelligent Device Platform XT offers :

Gateway security : Secures communication channel, the data and the end device
Application Enablement : Provides JAVA OSGi application environment is provided
Device connectivity : Connection between devices using MQTT protocol
Remote device management : Supports well established management protocol such as TR-069.

161 .
Which transportation brings intelligence to their operations?
A)
Smart Energy
B)
Route Navigation
C)
Industrial Automation
D)
Building Automation

Correct Answer :   Industrial Automation

Explanation : Wind River helps industrial manufactures bring intelligence to their operations. Gain insights from your machine data with smart devices management.

162 .
One way to see observations addressing IoT analytics is?
A)
2-Tier Analytics
B)
3-Tier Analytics
C)
4-Tier Analytics
D)
5-Tier Analytics

Correct Answer :   3-Tier Analytics

Explanation : One way that we see observation addressing the IoT analytics needs is via a 3-Tier Analytics.

163 .
How can we publish data in Intel Internet Of Things (IoT)?
A)
By paying amount
B)
By creating an account
C)
By signing an account
D)
By deleting an account

Correct Answer :   By creating an account

Explanation : Intel IoT Analytics requires us to sign up, create an account with a valid e mail and a password, and click on the activation link of a confirmation e mail before we can publish the sensor data using their free services.

164 .
_________ command line utility allows us to perform specific interactions with Intel IoT Analytics.
A)
Daemon
B)
Local agent
C)
SSH Terminal
D)
Iotkit-admin

Correct Answer :   Iotkit-admin

Explanation : The agent includes the iotkit-admin command line utility allows us to perform specific interactions with Intel IoT Analytics.

165 .
What is the full form of HART?
A)
Highway Addressable Remote Transducer
B)
High Address Reduce Transport
C)
High Application Remote Transport
D)
Highway Application Remote Transport

Correct Answer :   Highway Addressable Remote Transducer

Explanation : 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.

166 .
What is the range of z-wave?
A)
10 to 20 m
B)
30 to 50 m
C)
30 to 100 m
D)
100 to 1000 m

Correct Answer :   30 to 100 m

Explanation : 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.

167 .
The temperature and humidity sensor values are printed in _________
A)
PIP
B)
SDK
C)
PYPI
D)
OLED matrix

Correct Answer :   OLED matrix

Explanation : When we read temperature and humidity values from the sensor, we printed the values in an OLED matrix and rotated a servo’s shaft to display the measured temperature expressed in degrees Fahrenheit with the shaft.

168 .
PIP is _________ acronym.
A)
Package
B)
Recursive
C)
Intrusive
D)
Excursive

Correct Answer :   Recursive

Explanation : PIP is a recursive acronym that stands for either pip installs packages or pip installs python.

169 .
_________ is created to represent the interface to Intel IoT Analytics.
A)
IntelIotAnalytics
B)
IntelIoTAnalytics
C)
Intel_Iot_Analytics
D)
Intel_IoT_Analytics

Correct Answer :   IntelIotAnalytics

Explanation : We will create an Intel Iot Analytics class to represent the interface to Intel IoT Analytics and make it easy for us to publish observations for the three components.

170 .
Which of the following topology is used for ZigBee Smart Energy?
A)
Star Topology
B)
Bus Topology
C)
Ring Topology
D)
Any Topology

Correct Answer :   Star Topology

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

171 .
What is MQTT primarily used for?
A)
System transfer
B)
Create connection
C)
User communication
D)
Machine to Machine Communication

Correct Answer :   Machine to Machine Communication

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

172 .
Which of the following protocols does not exist at the data link layer?
A)
LoRaWAN
B)
WirelessHART
C)
Secure MQTT
D)
ZigBee Smart Energy

Correct Answer :   Secure MQTT

Explanation : 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.

173 .
If the device is programmed with a bootloader, the application image is loaded in _________ interface.
A)
I2C
B)
USB
C)
SPI
D)
UART

Correct Answer :   USB

Explanation : An uninitialized device requires the bootloader to be flashed over the debug interface. Once the device is programmed with a bootloader, the application image is loaded in USB interface.

174 .
Which requires data stream management?
A)
IoT
B)
Bigdata
C)
Device data
D)
Both (A) and (B)

Correct Answer :   IoT

Explanation : In order for one to claim that they can deliver IoT analytic solutions requires big data, but IoT analytics must also include: Stream data management and Edge analytics.

175 .
The IoT operates at ___________ scale.
A)
Sensor
B)
Machine
C)
Device
D)
Human

Correct Answer :   Machine

Explanation : The IoT operates at machine scale, by dealing with machine to machine generated data. This machine generated data creates discrete observations at very high signal rates.

176 .
______manages the metadata of the IoT services.
A)
Power
B)
Package
C)
Controller
D)
Scheduler

Correct Answer :   Scheduler

Explanation : Scheduler manages the metadata of the IoT services, signature of the service, sensors used to deliver, and execution parameters.

177 .
Which service permits the changes to the IoT services?
A)
Enable
B)
Disable
C)
Update
D)
Registered service status

Correct Answer :   Update

Explanation : Update service permits changes to the IoT services. In particular, it allows for the updating of the service’s lifecycle metadata according to the requested changes.

178 .
______ are the general feature of our brain's perception.
A)
Interact
B)
Research
C)
Strobes
D)
Constant

Correct Answer :   Strobes

Explanation : Evidence gathered from the finding of a landmark Australian Italian collaboration suggests that oscillations or strobes are a general feature of our brains perception.

179 .
Which service enables the user to periodically invoke an already defined IoT service?
A)
Poll for the report
B)
Get service
C)
Get available services
D)
Service updated resources

Correct Answer :   Poll for the report

Explanation : Poll for the report service enables the user to periodically invoke an already defined IoT service within specified time intervals.

180 .
Which challenge comes under IoT devices, reliable bidirectional signaling.
A)
Security
B)
Signaling
C)
Presence detection
D)
Power consumption

Correct Answer :   Signaling

Explanation : With connected IoT devices, reliable bidirectional signaling is essential for collecting and routing data between devices.

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