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AZ-900 uCertify > 3.1 Core Solutions available in Azure > Flashcards

3.1 Core Solutions available in Azure Flashcards

1
Q

What is Azure IoT Hub?

A

Used to manage, monitor. and send messages to IoT devices either individually or in groups.

You can add up to 1 million devices to a single IoT hub.

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2
Q

What is cloud to device (C2D) messaging?

A

Sending messages to IoT devices or devices to IoT hub.

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3
Q

How does IoT Hub protect messages between devices?

A

IoT Hub creates a connection string that uses a shared access key for authentication. It is therefore encrypted.

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4
Q

What is a DEVICE TWIN?

A

Every IoT device in IoT Hub has a logical equivalent that is stored in the IoT Hub, stored in JSON format.

Device Twins contain metadata and device properties to help further categorize IoT devices. This metadata is saved as TAGS .

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5
Q

How many copies are there of the properties of IoT devices in IoT Hub?

A

Two copies: REPORTED PROPERTY and DESIRED PROPERTY

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6
Q

What is the DESIRED PROPERTY in IoT Hub?

A

It allows you to change device properties in IoT Hub.

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7
Q

What does the REPORTED PROPERTY do?

A

It maintains the last value an IoT device reports to IoT Hub until it is updated.

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8
Q

What is IoT Hub Device Provisioning Service (DPS)?

A

DPS uses enrollment groups to add devices to IoT Hub.

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9
Q

What are the two pricing tiers for IoT Hub?

A

Basic and Standard

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10
Q

Can you change to a different pricing tier in IoT Hub?

A

No

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11
Q

What is IoT Central?

A

It is a SaaS for IoT devices. You create your application to manage IoT devices.

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12
Q

What are the three built-in roles in IoT Central and why are there roles available?

A

Roles are used by the administrator to control what people can do with the app.

The three roles are: Administrator, Builder, and operator

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13
Q

What is the Administrator role in IoT Central?

A

Users have full access to applications and can edit pages or add users.

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14
Q

What is the Builder role in IoT Central?

A

The builder role can edit pages but cannot perform admin tasks.

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15
Q

What is the Operator role in IoT Central?

A

Operators can use IoT Central applications only.

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16
Q

Can you create your own IoT Central roles?

A

Yes, so you have the flexibility to determine which permissions users have.

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17
Q

What is Azure Sphere?

A

Azure Sphere is a Microsoft secure IoT ecosystem based around a microprocessor unit (MCU). It enforces secure connections between IoT devices.

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18
Q

What is Synapse Analytics?

A

Synapse Analytics is used to analyze Big Data. It stores

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19
Q

What is an Azure Synapse Cluster?

A

Azure Synapse runs in a Synapse Cluster. A synapse cluster consists of:
1 Synapse SQL
2 Apache Spark integration
3 Data integration of Spark and Azure Data Lake Storage
4 A web-based user interface called Azure Synapse Studio

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20
Q

What is Synapse SQL?

A

The datawarehousing part of Azure Synapse.

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21
Q

How does Synapse SQL run multiple queries to run in parallel?

A

By running multiple compute nodes.

22
Q

What is Azure Data Lake Storage?

A

It stores large amounts of data that needs to be analyzed.

23
Q

How is data stored in a Azure Data Lake?

A

Data is stored in containers. Containers contain related data.

24
Q

What is Azure Synapse Studio?

A

It is a web based portal used to analyze and manage data in Azure Synapse.

25
Q

What is HDInsight?

A

It is used to create and manage clusters of computers to processes big data.

26
Q

What are Azure Databricks?

A

Used to accumulate and form data for easier consumption. It works with third party machine learning frameworks to build machine learning models.

27
Q

What is the serverless model of computer?

A

When you are not running any jobs, you dont have any VMs or compute resources assigned to you.

28
Q

What is Databricks based on?

A

It is based on Apache Spark.

29
Q

What is Azure Machine Learning?

A

It is a service that lets you work with AI. It comes with SDKs for Python and R in a drag and drop evironment.
It comes in two editions: Basic and Enterprise

30
Q

What are Cognitive Services?

A

A SaaS Machine Learning model that you can use in your own ML solutions without developing your own.

31
Q

What is Computer Vision?

A

An API that simplifies building ML engines that can extract info from images.

32
Q

What is the Video Indexer API?

A

It analyzes videos and extracts information from those videos.

33
Q

Can you use Cognitive Services to moderate images, text, and video?

A

Yes.

34
Q

What is the pricing structure for Azure Cognitive Services?

A

It is transactional. You pay for the transactions processed with the service.

35
Q

What is Azure Bot Service?

A

It is a PaaS running in the Azure App Service. It is easy to scale and configure.

36
Q

How are you charged for Azure Bot Service?

A

You are charged for an App Service plan.

37
Q

What is Azure Functions?

A

A serverless offering that can be used to write code.

38
Q

What is a function?

A

A code that runs when something triggers it.

39
Q

What is a proxy?

A

It allows you to configure multiple endpoints for your Function app.

40
Q

What is a Slot?

A

It allows you to create a copy of a Funtion app that isnt public facing.

41
Q

What are Logic Apps?

A

They are similar to Function Apps. They initiate based on a trigger. Unlike Function apps, you do not need to write the code. Once inistiated, Logic Apps can complete workflows.

42
Q

What are the three components in Logic Apps that enable workflows?

A

Connectors: component in Logic App that connects to something such as a service, FTP server, ect.

Trigger: an action that causes Logic App workflow to run

Action: What Logic App will do as an output.

43
Q

What is Event Grid?

A

It provides the functionality to enable an Azure service to trigger an event when something specific happens and allows another Azure service to listen for that event so it can react.

44
Q

What is Azure DevOps?

A

It is a collection of tools to plan, track, and manage projects. It consists of five services.

45
Q

What services does Azure DevOps provide?

A

Azure Boards: offers visual/drag and drop view to manage work of team members

Azure Repos: Source and version control

Azure Pipelines: Manage software releases through build, test, and release automation

Azure Test Plans: create and track tests to ensure reliable software releases

Azure Artifacts: offers package feeds from public and private sources.

46
Q

What is Azure DevTest Labs?

A

It offers preconfigured VMs that suit the specific needs of developers. It save a company time and money by eliminating the need to configure and install software on VMs and developers forgetting to end VM sessions when they are complete.

47
Q

What are “Artifacts”?

A

Artifacts are packaged components that might be necessary for a particular configuration.

48
Q

What is the difference between a custom image and a formula?

A

A custom image is an image that is based on a VHD from an existing VM.

A formula is based on a VHD but contains settings specific to DevTest Labs (like VM size, artifacts, ect).

49
Q

What is GitHub?

A

The worlds largest repository of source code based on the Linux kernal.

50
Q

What is GitHub Actions?

A

It provides you with the ability to create event driven workflows in GitHub.

AZ-900 uCertify (5 decks)

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