ECEN421 Quizzes 9-11

How many states does an 8-bit ring counter have?

8

How many MCU port input pins would be needed to decode a 24-button keypad with 4 rows and 6 columns?

6

How are task functions for real-time operating systems different from normal functions?

No exit

Quiz 9 FR

7 states including start

Which of the following protocols is based on publishing and subscribing to topics?

MQTT

In MQTT, what is used as a mediator between nodes that want to communicate with each other?

A broker

Which of the following AWS services is in the category of “control services”?

AWS IoT Core

For the AWS exercise of this unit, your ESP32 device was represented virtually in AWS as what?

A thing

How many Quality of Service levels does MQTT have?

3

Amazon Alexa is categorized as what type of technology?

Voice assistant

Which of the following features is an advantage of using a VUI over a GUI for providing using input?

Hands-free usage

What part of a voice utterance is used to activate a voice assistant application?

Wake word

What third party service was used as a “rules engine” for creating the temperature record spreadsheet in the exercise for this project milestone?

IFTTT

What category of technology does Microsoft Azure fall under?

IoT Platform