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AWS > IoT Services > Flashcards

IoT Services Flashcards

1
Q

Q: What is AWS IoT?

A

A: AWS IoT is a suite of managed services that enables secure, scalable, and reliable communication between IoT devices and the cloud.

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2
Q

Q: What is AWS IoT Core?

A

A: A managed service that allows IoT devices to securely connect to the cloud and interact with AWS services.

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3
Q

Q: Which protocols are supported by AWS IoT Core?

A

A: MQTT, HTTP, WebSockets, and LoRaWAN (for IoT Core for LoRaWAN).

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4
Q

Q: What is the Message Broker in AWS IoT Core?

A

A: A pub/sub system that facilitates communication between devices and the cloud using MQTT or WebSockets.

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5
Q

Q: What is a Device Shadow in AWS IoT?

A

A: A virtual representation of an IoT device’s state, allowing applications to interact with devices even when offline.

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6
Q

Q: What is the Rules Engine in AWS IoT Core?

A

A: A feature that processes incoming device messages and routes them to AWS services like S3, DynamoDB, Lambda, or Kinesis.

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7
Q

Q: What are “Things” in AWS IoT?

A

A: Virtual representations of physical IoT devices managed in AWS IoT Core.

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8
Q

Q: What are Thing Groups in AWS IoT?

A

A: Logical groupings of devices that simplify management and application of policies.

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9
Q

Q: What is AWS IoT Device Defender?

A

A: A service that continuously audits and monitors IoT device configurations and traffic to detect anomalies and ensure security.

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10
Q

Q: What is AWS IoT Device Management?

A

A: A service to onboard, organize, monitor, and remotely manage IoT devices at scale.

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11
Q

Q: What is Fleet Indexing in AWS IoT?

A

A: A feature that indexes device attributes and states to simplify fleet queries and management.

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12
Q

Q: What is AWS IoT Events?

A

A: A service for detecting and responding to events from IoT devices based on defined conditions.

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13
Q

Q: What is AWS IoT Analytics?

A

A: A managed service for collecting, storing, processing, and analyzing IoT data at scale.

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14
Q

Q: What is AWS IoT Greengrass?

A

A: A service for running local compute, messaging, data caching, and ML inference on IoT devices.

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15
Q

Q: What are Greengrass components?

A

A: Modular software pieces that perform specific functions on IoT devices, such as data collection, ML inference, or message routing.

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16
Q

Q: What is a Greengrass Core device?

A

A: A device that acts as the central hub for local IoT processing and interacts with AWS IoT services.

17
Q

Q: What is AWS IoT Fleet Hub?

A

A: A feature to build web applications for monitoring and managing IoT device fleets.

18
Q

Q: What is AWS IoT SiteWise?

A

A: A managed service for collecting, storing, and analyzing industrial equipment data at scale.

19
Q

Q: What is IoT SiteWise Edge?

A

A: A feature that processes and analyzes industrial data locally before sending it to the cloud.

20
Q

Q: What is AWS IoT TwinMaker?

A

A: A service to create digital twins of physical systems, integrating data from various IoT sources for visualization and monitoring.

21
Q

Q: What is IoT Secure Tunneling?

A

A: A service that establishes secure tunnels to remotely access IoT devices for troubleshooting and updates.

22
Q

Q: What is AWS IoT 1-Click?

A

A: A service that enables simple devices to trigger predefined AWS Lambda functions.

23
Q

Q: What is AWS IoT Jobs?

A

A: A service to schedule and manage remote operations like firmware updates on IoT devices.

24
Q

Q: What operations can be performed on Device Shadows?

A

A: Create, update, retrieve, and delete the desired and reported states of devices.

25
Q

Q: What is an IoT Policy in AWS IoT?

A

A: A document that defines permissions for IoT devices to interact with AWS IoT Core and other AWS services.

26
Q

Q: How is data encrypted in AWS IoT?

A

A: Using TLS for data in transit and AWS KMS or customer-provided keys for data at rest.

27
Q

Q: Which services enable real-time analytics for IoT data?

A

A: Amazon Kinesis Data Analytics and AWS IoT Analytics.

28
Q

Q: What are AWS IoT Device SDKs?

A

A: Libraries that enable IoT devices to communicate with AWS IoT Core using MQTT, HTTP, or WebSockets.

29
Q

Q: How does AWS IoT enable edge computing?

A

A: Through IoT Greengrass, enabling local processing, data caching, and ML inference on edge devices.

30
Q

Q: How does AWS support ML in IoT?

A

A: By integrating SageMaker models with IoT Greengrass for edge inference or processing IoT data for ML training.

31
Q

Q: What methods are available for provisioning IoT devices?

A

A: Just-In-Time Provisioning (JITP), Just-In-Time Registration (JITR), and Fleet Provisioning.

32
Q

Q: What are best practices for IoT security in AWS?

A

A: Use IAM and IoT policies, enable encryption, implement secure tunneling, and audit devices with IoT Device Defender.

33
Q

Q: Which AWS services are used to monitor IoT devices?

A

A: CloudWatch, IoT Device Defender, and IoT Fleet Hub.

34
Q

Q: How does AWS IoT scale for large device fleets?

A

A: By using auto-scaling message brokers, rules engines, and managed services like IoT Analytics and IoT Device Management.

35
Q

Q: What are common use cases for AWS IoT?

A

A: Predictive maintenance, smart homes, fleet management, industrial monitoring, and healthcare IoT.

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