Internet of Things Multiple Choice Questions and Answers – Publishing Messages with Commands | IOT MCQs

Questions
1 What is the java extension file in IoT?
A .jar
B .c
C .exe
D .py

Answer: .jar
2 Do we run our program in the same computer where we have written?
A True
B False
C May or may not
D Cannot be determined

Answer: May or may not

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3 Publish command message is sent from _________
A Only publisher to broker
B Only broker to publisher
C Publisher to broker and broker to publisher
D Server to client

Answer: Publisher to broker and broker to publisher
4 The message is sent to the input queue of a message flow that contains a _________
A Subscriber
B Server
C Publication node
D Client

Answer: Client
5 Does user has authority for all topics.
A True
B False

Answer: False
6 ROSTOPIC uses _________ at the command line for representing the content of the message.
A YAML_syntax
B rostopic bw
C rostopic delay
D rostopic echo

Answer: YAML_syntax
7 Which command displays the band width?
A rostopic hz
B rostopic delay
C rostopic echo
D rostopic bw

Answer: rostopic bw
8 rostopic delay will provide delay for ___________
A Topics which has header
B Topics which has tail
C Topics which has tail and head
D To all topics

Answer: Topics which has header
9 Which command displays messages published to a topic?
A rostopic bw
B rostopic delay
C rostopic echo
D rostopic hz

Answer: rostopic echo
10 Which command finds out the topic?
A rostopic bw
B rostopic delay
C rostopic delay
D rostopic delay

Answer: rostopic delay
ADRE 3.0 Complete Study Material