Internet of Things interview questions part 39
Internet of Things interview questions part 39
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Total Questions: 20
1. Which protocol is lightweight?
Correct Answer is : MQTT
2. PubNub publishes and subscribes _________ in order to send and receive messages.
Correct Answer is : Keys
3. By clicking which key the PubNub will display public, subscribe, and secret keys.
Correct Answer is : Demo Keyset
4. The messageChannel class declares the _________ class attribute that defines the key string.
Correct Answer is : command_key
5. _________ method saves the received arguments in three attributes.
Correct Answer is : __Init__
6. _________ and _________ saves the publish and subscribe keys that we have generated with the PubNub Admin portal.
Correct Answer is : public_key and subscribe_key
7. _________ specifies the function that will be called when there is a new message received from the channel.
Correct Answer is : Callback
8. _________ specifies the function that will be called on an error event.
Correct Answer is : Error
9. _________ Specifies the function that will be called when a successful connection with the PubNub cloud.
Correct Answer is : Connect
10. _________ specifies the function that will be called when a successful re-connection is completed.
Correct Answer is : Reconnect
11. ___________ specifies the function that will be called when the client disconnects.
Correct Answer is : Disconnect
12. What is the image that we have been using to boot Intel Galileo Gen 2 board?
Correct Answer is : Local agent
13. The agent running as a _________ on a device.
Correct Answer is : Daemon
14. _________ command line utility allows us to perform specific interactions with Intel IoT Analytics.
Correct Answer is : Iotkit-admin
15. We will not use command line utility to perform _________
Correct Answer is : Send observations
16. To check whether the command line utility can establish proper communication the command is _________
Correct Answer is : iotkit-admin test
17. Build: 0.14.5 defines what?
Correct Answer is : Version
18. Command line to obtain the device Id?
Correct Answer is : iotkit-admin device-id
19. Default, device Id is equal to _________
Correct Answer is : MAC Address
20. Command to change the device Id?
Correct Answer is : iotkit-admin set-device-id new-device-id
