_________ allows us to control electronic components

• RETful API
• RESTful API
• HTTP
• MQTT

MQTT stands for _____________

• MQ Telemetry Things
• MQ Transport Telemetry
• MQ Transport Things
• MQ Telemetry Transport

Which protocol is lightweight?

•   MQTT
• HTTP
• CoAP
• SPI

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

• Network
• Account
• Portal
• Keys

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

• Pane
• Demo Keyset
• Portal
• Network

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

• command_key
• command-key
• commandkey
• Key_command

 _________ method saves the received arguments in three attributes.

•    __Init
• Init__
• __Init__
• _init_

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

• Reconnect
• Error
• Connect
• Callback

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

• Callback
• Error
• Connect
• Reconnect

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

• Callback
• Error
• Connect
• Reconnect