AWS IoT Core architecture in IOT Protocols - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is AWS IoT Core?

AWS IoT Core is a managed cloud service that lets connected devices easily and securely interact with cloud applications and other devices.

beginner

Name the main components of AWS IoT Core architecture.

The main components are: Device Gateway, Message Broker, Rules Engine, Device Shadows, and Registry.

intermediate

What role does the Device Gateway play in AWS IoT Core?

The Device Gateway securely receives messages from devices using MQTT, HTTP, or WebSocket protocols and routes them to the Message Broker.

intermediate

Explain the purpose of the Rules Engine in AWS IoT Core.

The Rules Engine evaluates inbound messages and routes them to other AWS services like Lambda, S3, or DynamoDB based on defined rules.

intermediate

What is a Device Shadow in AWS IoT Core?

A Device Shadow is a virtual representation of a device's state that allows applications to interact with devices even when they are offline.

Which protocol is NOT supported by AWS IoT Core for device communication?

A FTP

B HTTP

C WebSockets

D MQTT

AWS IoT Core supports MQTT, HTTP, and WebSockets but does not support FTP for device communication.

What component routes messages from devices to AWS services in AWS IoT Core?

A Device Gateway

B Message Broker

C Device Shadow

D Rules Engine

The Rules Engine routes messages to AWS services based on rules. The Message Broker routes messages between devices.

What does the Device Shadow allow you to do?

A Store device firmware

B Manage device certificates

C Represent device state virtually

D Encrypt device messages

Device Shadows provide a virtual representation of device state for applications to interact with devices even when offline.

Which AWS IoT Core component securely accepts device connections?

A Device Gateway

B Rules Engine

C Registry

D Message Broker

The Device Gateway securely accepts connections from devices using supported protocols.

What is the Registry used for in AWS IoT Core?

A Managing AWS user accounts

B Storing device metadata and identities

C Running device code

D Routing messages

The Registry stores information about devices such as metadata and identities.

Describe the flow of a message from a device to an AWS service in AWS IoT Core architecture.

Think about how the message moves step-by-step through the components.

Explain how AWS IoT Core supports device state management when devices are offline.

Focus on the virtual representation of device state.