230+ Internet of Things (IoT) Solved MCQs

1.

                      allows us to control electronic components

A. retful api
B. restful api
C. http
D. mqtt
Answer» A. retful api
2.

MQTT stands for                                

A. mq telemetry things
B. mq transport telemetry
C. mq transport things
D. mq telemetry transport
Answer» D. mq telemetry transport
3.

MQTT is better than HTTP for sending and receiving data.

A. true
B. false
Answer» A. true
4.

MQTT is                       protocol.

A. machine to machine
B. internet of things
C. machine to machine and internet of things
D. machine things
Answer» C. machine to machine and internet of things
5.

Which protocol is lightweight?

A. mqtt
B. http
C. coap
D. spi
Answer» A. mqtt
6.

PubNub publishes and subscribes                       in order to send and receive messages.

A. network
B. account
C. portal
D. keys
Answer» D. keys
7.

By clicking which key the PubNub will display public, subscribe, and secret keys.

A. pane
B. demo keyset
C. portal
D. network
Answer» B. demo keyset
8.

The messageChannel class declares the                       class attribute that defines the key string.

A. command_key
B. command-key
C. commandkey
D. key_command
Answer» A. command_key
9.

                      method saves the received arguments in three attributes.

A.      init
B. init      
C.      init      
D. _init_
Answer» C.      init      
10.

                      and                       saves the publish and subscribe keys that we have generated with the PubNub Admin portal.

A. public_key and subscribe_key
B. public-key and subscribe-key
C. publickey and subscribekey
D. key_public and key_subscribe
Answer» A. public_key and subscribe_key
11.

                      specifies the function that will be called when there is a new message received from the channel.

A. reconnect
B. error
C. connect
D. callback
Answer» D. callback
12.

                      specifies the function that will be called on an error event.

A. callback
B. error
C. connect
D. reconnect
Answer» B. error
13.

                      Specifies the function that will be called when a successful connection with the PubNub cloud.

A. callback
B. error
C. connect
D. reconnect
Answer» C. connect
14.

                      specifies the function that will be called when a successful re-connection is completed.

A. callback
B. error
C. connect
D. reconnect
Answer» D. reconnect
15.

                          specifies the function that will be called when the client disconnects.

A. callback
B. error
C. connect
D. reconnect
Answer» D. reconnect
16.

The number of elements in the Open IoT Architecture?

A. 6 elements
B. 8 elements
C. 7 elements
D. 3 elements
Answer» C. 7 elements
17.

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 increasing time for development
D. increasing cost and decreasing time for development
Answer» A. reducing cost and time for development
18.

One of the main characteristics of Linked Stream Data is “Live Streaming”.

A. true
B. false
Answer» A. true
19.

The huge number of devices connected to the Internet of Things has to communicate automatically, not via humans. What is this called?

A. skynet
B. bot 2 bot
C. machine 2 machine
D. intercloud
Answer» C. machine 2 machine
20.

Internet of Things needs a lot of network connection. What is the proposed “white Space” radio standard called?

A. bluetooth
B. wimax
C. weightless
D. zigbee
Answer» C. weightless
21.

What is the sensor/protocol used in GSN?

A. http protocol
B. coap protocol
C. mqtt protocol
D. xmpp protocol
Answer» B. coap protocol
22.

Which is the core wrapper of GSN?

A. serial
B. udp
C. gpstest
D. zeromqwrapper
Answer» D. zeromqwrapper
23.

Open IoT ontology is extending the W3C SSN ontology which supports the description of the physical and processing structure of sensors.

A. true
B. false
Answer» A. true
24.

Open IoT manages the registration, data acquisition, deployment of sensors and interconnected of objects, through which network?

A. gsn
B. x-gsn
C. lsm
D. http
Answer» B. x-gsn
25.

Which environment does Global Sensor Network work on?

A. c++
B. java
C. html
D. c
Answer» B. java
26.

                          is a community that is working together to establish an IoT architecture.

A. eclipse iot
B. red hat
C. intercloud
D. bot 2 bot
Answer» A. eclipse iot
27.

                      provides a middleware and application container for IoT gateway.

A. eclipse kura
B. red hat
C. intercloud
D. bot 2 bot
Answer» A. eclipse kura
28.

                      is a modular and cloud based platform.

A. eclipse kura
B. red hat
C. intercloud
D. eclipse kapua
Answer» D. eclipse kapua
29.

Kapua also provides a core integration framework.

A. true
B. false
Answer» A. true
30.

                      an open source stack for gateways and the edge.

A. eclipse kapua
B. red hat
C. intercloud
D. eclipse kura
Answer» D. eclipse kura
31.

Gateway provides the connection between                       and                       

A. cloud and controller
B. network and cloud
C. network and controller
D. controller and device
Answer» A. cloud and controller
32.

Sensors provide                  data per second.

A. hundreds of hundreds of data
B. hundreds of thousands of data
C. tens of hundreds of data
D. tens of thousands of data
Answer» D. tens of thousands of data
33.

Does IOT gateway provide security for the network.

A. true
B. false
Answer» A. true
34.

A sensor uses which network?

A. lan and han
B. han and pan
C. lan and pan
D. lan, pan and han
Answer» D. lan, pan and han
35.

Gateway software should be smart enough to handle                           

A. gps
B. message
C. logging
D. sensors
Answer» C. logging
36.

Number of approaches gateway can be installed?

A. 2 approaches
B. 3 approaches
C. 2 approaches
D. 2 approaches
Answer» B. 3 approaches
37.

Drawback of Factory Bootstrap?

A. it should not have many gateways
B. it should not have many devices
C. complex circuit can’t be handled
D. it should have many gateways
Answer» A. it should not have many gateways
38.

Central software management server communicates with the gateway devices in which approach?

A. factory bootstrap
B. server limited bootstrap
C. client initiated bootstrap
D. bootstrap
Answer» B. server limited bootstrap
39.

Which mode assumes that it is the gateway’s responsibility to connect to the central repository server?

A. factory bootstrap
B. server limited bootstrap
C. client initiated bootstrap
D. bootstrap
Answer» C. client initiated bootstrap
40.

The feature of IoT Gateway is the ability to download updates over-the-air.

A. true
B. false
Answer» A. true
41.

Hardware address is known as                       

A. mac address
B. ip address
C. network interface card
D. address resolution protocol
Answer» A. mac address
42.

MAC stands for

A. media area control
B. memory access control
C. memory area control
D. media access control
Answer» D. media access control
43.

What translates IP address into MAC address?

A. organizationally unique identifier
B. address resolution protocol
C. network interface card
D. burned in address
Answer» C. network interface card
44.

Networking Hardware Address is referred with                    

A. ip address
B. mac address
C. nic
D. organizationally unique identifier
Answer» B. mac address
45.

Does MAC address contain characters.

A. true
B. false
Answer» A. true
46.

MAC addresses are very useful in diagnosing network issues.

A. true
B. false
Answer» A. true
47.

On wireless networks                    filtering is the security measure.

A. oui
B. ip
C. nic
D. mca
Answer» D. mca
48.

MAC addresses are used as                    

A. network addresses
B. ip address
C. hardware address
D. burned in address
Answer» A. network addresses
49.

IEEE standards for Institute of Electrical and Electronics Engineers.

A. false
B. true
Answer» B. true
50.

The original IEEE 802 MAC address comes from                   

A. mac address
B. ip address
C. ethernet address
D. http
Answer» C. ethernet address
51.

Which characteristics involve the facility the thing to respond in an intelligent way to a particular situation?

A. intelligence
B. connectivity
C. dynamic nature
D. enormous scale
Answer» A. intelligence
52.

empowers IoT by bringing together everyday objects.

A. intelligence
B. connectivit y
C. dynamic nature
D. enormous scale
Answer» B. connectivit y
53.

The collection of data is achieved with                 changes.

A. intelligence
B. connectivit y
C. dynamic nature
D. enormous scale
Answer» C. dynamic nature
54.

The number of devices that need to be managed and that communicate with each other will be much larger.

A. intelligence
B. connectivity
C. dynamic nature
D. enormous scale
Answer» D. enormous scale
55.

Provide the means to create capability that reflects true awareness of the physical world and people.

A. sensors
B. heterogene ity
C. security
D. connectivity
Answer» A. sensors
56.

in IoT as one of the key characteristics, devices have different hardware platforms and networks.

A. sensors
B. heterogeneity
C. security
D. connectivity
Answer» B. heterogeneity
57.

IoT devices are naturally vulnerable to threats.

A. sensors
B. heterogene ity
C. security
D. connectivity
Answer» C. security
58.

Which challenge comes under IoT devices, reliable bidirectional signaling.

A. signaling
B. security
C. presencedetection
D. powerconsumption
Answer» A. signaling
59.

Which challenge comes under securing the information?

A. signaling
B. security
C. presence detection
D. power consumption
Answer» C. presence detection
60.

gives an exact, up to the second state of all devices on a network.

A. signaling
B. security
C. resence detection
D. powercon sumption
Answer» C. resence detection
61.

Which challenge comes when we use many devices on the same network?

A. signaling
B. security
C. presence detection
D. power consumption
Answer» D. power consumption
62.

a cellular network is expensive, especially with many IoT devices.

A. signaling
B. security
C. bandwidth
D. power consumption
Answer» C. bandwidth
63.

Which of the following issues are considered in IoT?

A. security issue
B. reliablity issue
C. standard issue
D. all issues
Answer» D. all issues
64.

SBC stands for?

A. standard buildingcenter
B. smart businesscenter
C. standard businesscenter
D. smart building center
Answer» B. smart businesscenter
65.

IoT is a paradigm that involves ubiquitous presence in the environment

A. true
B. false
Answer» A. true
66.

The IoT platforms are mainly divided into how many types

A. 3 types
B. 5 types
C. 4 types
D. 2 types
Answer» C. 4 types
67.

ITS stands for

A. internet travel services
B. internet transportat ion security
C. intelligent transportation security
D. intelligent transportation services
Answer» D. intelligent transportation services
68.

In order to improve their competitiveness and services assurance, the                 require independently funded IoT projects.

A. egovermnent related
B. enterprise-based
C. company based
D. business orientedplatform
Answer» B. enterprise-based
69.

The use of RFID in product logistics may realize automatic acquisition of logistics information.

A. true
B. false
Answer» A. true
70.

An IoT                 center is envisaged as an important part of the generic IoT platform to unify the organization.

A. individual information
B. individual integration
C. integrated information
D. individual and integrated information
Answer» C. integrated information
71.

The core element of architecture of smart city is

A. mobile unified service
B. urban application platform
C. management center
D. integrated information provider
Answer» D. integrated information provider
72.

The core element is operated by

A. paas
B. iotservice provider
C. saas
D. iaas
Answer» B. iotservice provider
73.

Who will use their own IoT business models?

A. paas
B. saas
C. iaas
D. service provider
Answer» D. service provider
74.

IoT promotes the creation of IoT terminal industry

A. devices
B. network
C. clusters
D. things
Answer» C. clusters
75.

Supplementary platforms in the architecture provide support for these services.

A. true
B. false
Answer» A. true
76.

Fog computing can be perceived in                       and

A. big data and cloud systems
B. big data and iot
C. cloud systems and iot
D. big data, cloud systems and iot
Answer» A. big data and cloud systems
77.

Which of the following computing emphasizes proximity to end user?

A. mist computing
B. cloud computing
C. edge computing
D. fog computing
Answer» D. fog computing
78.

is prototyping and testing a scalable. Secure Distribution Tolerant Mesh Network to protect strategic military assets.

A. spanar
B. spawar
C. apwanr
D. spanar
Answer» B. spawar
79.

AIDC stands for

A. data carriers
B. carriers
C. computing
D. device carriers
Answer» A. data carriers
80.

are rudimentary form of computing.

A. mist computing
B. fog computing
C. mobile cloudcomputing
D. cloud computing
Answer» A. mist computing
81.

enables production-ready feature to the spring boot application.

A. actuators
B. endpoint
C. boot
D. hyper media
Answer» A. actuators
82.

should be added to start the existing actuators in boot.

A. spring-boot- actuator
B. sprint-actuator- boot
C. boot-spring- actuator
D. actuator- spring-boot
Answer» A. spring-boot- actuator
83.

allows us to monitor the application.

A. actuators
B. endpoints
C. boot
D. hypermedia
Answer» B. endpoints
84.

Which endpoints are sensitive?

A. /health
B. /info
C. /metric
D. /trace
Answer» C. /metric
85.

Using which customized endpoint will be accessed over HTTP?

A. id and enabled
B. enabled
C. sensitive
D. id
Answer» D. id
86.

Which devices measures gases or liquid?

A. proximity sensor
B. pressure sensor
C. temperature sensor
D. touch sensor
Answer» B. pressure sensor
87.

Which sensor measures the pressure relative to perfect vacuum?

A. absolute pressure sensor
B. gauge pressure sensor
C. vacuum pressure sensor
D. ferential pressure sensor
Answer» B. gauge pressure sensor
88.

What is the stability of pressure sensor?

A. +/-0.75% fs
B. +/-0.5%fs
C. +/- 0.35% fs
D. +/-0.125% fs
Answer» C. +/- 0.35% fs
89.

What is the operating voltage of pressure sensor?

A. 3.5v
B. 1.5v
C. 5v
D. 3v
Answer» D. 3v
90.

ENOB stands for

A. effective no of bits
B. effective no of bytes
C. efficient no of bits
D. efficient no of bytes
Answer» A. effective no of bits
91.

Perfect resolution is possible when?

A. the signal
B. signal
C. the signal
D. the signal
Answer» B. signal
92.

Resolution is expressed in

A. bytes
B. bits
C. word
D. nibble
Answer» B. bits
93.

The discrete levels available are

A. sides
B. edges
C. levels
D. bytes
Answer» C. levels
94.

In             an object of type Thread in the namespace System.Threading represents and controls one thread.

A. . py
B. .sap
C. .net
D. .exe
Answer» C. .net
95.

Number of pins in 8051 microcontroller with                 package.

A. 40 pin withllc
B. 60 pinwith qfp
C. 40 pin withdip
D. 60 pin withqfp
Answer» C. 40 pin withdip
96.

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
Answer» A. save energy
97.

What is the main function of Nest Thermostat E?

A. change the temperature only when we are at home
B. reduce the energy used
C. change the temperature from anywhere
D. powers off when a person is not present
Answer» C. change the temperature from anywhere
98.

Function of huge light bulb?

A. to reduce energy and to control lightning
B. to create lighting scenes based on your favourite photos
C. to reduce energy and to create lighting scenes based on your favourite photos and to control lightning
D. to controlling lightning and to create lighting scenes based on your favourite photos
Answer» C. to reduce energy and to create lighting scenes based on your favourite photos and to control lightning
99.

What is the drawback of using Lockitron?

A. wastage of more energy
B. supports in some devices only
C. won’t work at some conditions
D. tough installation
Answer» B. supports in some devices only
100.

Sonos is a system that uses wireless speakers.

A. wifi
B. hifi
C. zigbee
D. bluetooth
Answer» B. hifi
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