Q.1
_________ allows us to control electronic components.
  • a) RESTful API
  • b) CoAP API
  • c) HTTP
  • d) MQTT
Q.2
MQTT stands for _____________
  • a) MQ Telemetry Things
  • b) MQ Transport Telemetry
  • c) MQ Transport Things
  • d) MQ Telemetry Transport
Q.3
MQTT is better than HTTP for sending and receiving data.
  • a) True
  • b) False
Q.4
MQTT is _________ protocol.
  • a) Machine to Machine
  • b) Internet of Things
  • c) Machine to Machine and Internet of Things
  • d) Machine Things
Q.5
Which protocol is lightweight?
  • a) MQTT
  • b) HTTP
  • c) CoAP
  • d) SPI
Q.6
PubNub publishes and subscribes _________ in order to send and receive messages.
  • a) Network
  • b) Account
  • c) Portal
  • d) Keys
Q.7
By clicking which key the PubNub will display public, subscribe, and secret keys.
  • a) Pane
  • b) Demo Keyset
  • c) Portal
  • d) Network
Q.8
The messageChannel class declares the _________ class attribute that defines the key string.
  • a) command_key
  • b) command-key
  • c) commandkey
  • d) Key_command
Q.9
_________ method saves the received arguments in three attributes.
  • a) __Init
  • b) Init__
  • c) __Init__
  • d) _init_
Q.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
Q.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
Q.12
_________ specifies the function that will be called on an error event.
  • a) Callback
  • b) Error
  • c) Connect
  • d) Reconnect
Q.13
_________ Specifies the function that will be called when a successful connection with the PubNub cloud.
  • a) Callback
  • b) Error
  • c) Connect
  • d) Reconnect
Q.14
_________ specifies the function that will be called when a successful re-connection is completed.
  • a) Callback
  • b) Error
  • c) Connect
  • d) Reconnect
Q.15
___________ specifies the function that will be called when the client disconnects.
  • a) Callback
  • b) Error
  • c) Connect
  • d) Disconnect
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