PowerApps基础：版本管理和恢复

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"PL-900_139Q(1).pdf 是一份关于 Microsoft Power Platform 基础知识的考试资料，包含了 139 个问题，其中涉及到对 PowerApps 的操作和管理，特别是版本控制与恢复功能。" 在 PL-900 考试中，此部分知识点主要涉及了对 Microsoft Power Platform 的理解，尤其是 PowerApps 的核心特性。PowerApps 是微软提供的一个低代码开发平台，允许用户构建定制的业务应用，无需深厚的编程背景。问题 1 涉及到的是 PowerApps 的版本管理和恢复功能。当您在 PowerApps 中创建了一个新的应用版本并发布后，原始版本并不会被覆盖，而是会保存下来。用户可以有选择地恢复到先前的版本。在应用的“版本”选项卡中，您会看到所有保存的历史版本。题目中的陈述指出，当客户恢复了旧版本，你会在版本列表中看到两个版本，这是正确的。因此，正确答案是 C. three，意味着在恢复之前和之后，加上当前版本，总共有三个版本可见。这部分内容还强调了如何在 PowerApps 中恢复到之前的版本： 1. 登录到 powerapps.com，然后在左侧导航栏中点击或触按“应用”。 2. 在右边缘，点击或触按你想要恢复的应用的信息图标。 3. 点击或触按“版本”标签，然后选择你想要恢复的版本。 4. 在确认对话框中，点击或触按“恢复”。这一知识点在实际工作中非常关键，因为它确保了应用的可追溯性和可逆性，使得开发者和用户能够根据需要回滚到早期状态，从而避免因更新导致的问题。在更广泛的意义上，Microsoft Power Platform 包括 PowerApps、Power Automate（原名 Microsoft Flow）、Power BI 和 Power Virtual Agents，它们共同为企业提供了一整套构建、自动化、分析和协作工具。了解如何有效地使用这些工具，能够提升企业的数字化转型能力，提高工作效率，并创造商业价值。因此，掌握 PowerPlatform 的基础知识对于IT专业人员来说至关重要。

909A545160E581887343EF295A26525D

Section: Describe the business value of Power Platform

Explanation

Explanation/Reference:

Reference:

https://docs.microsoft.com/en-us/power-platform/admin/environments-overview

https://docs.microsoft.com/en-us/power-platform/admin/control-user-access

QUESTION 17

HOTSPOT

You have version 1.0.0.0 of a published Power Apps app. You create and publish version 2.0.0.0 of the

app. A customer goes through the process of restoring the previous version of the app.

How many versions of the app are displayed in the Version tab for the app? To answer, select the

appropriate option in the answer area.

Hot Area:

Correct Answer:

Section: Describe the business value of Power Platform

Explanation

Explanation/Reference:

Reference:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/restore-an-app

909A545160E581887343EF295A26525D

A. Save a copy of the rule and change the condition. Deactivate and delete the original rule.

B. Deactivate the business rule and change the condition.

C. Take a snapshot of the business rule and change the condition.

D. Change the condition and activate the change.

Correct Answer: AD

Section: Identify the Core Components of Power Platform

Explanation

Explanation/Reference:

Reference:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/working-with-rules

QUESTION 20

A coworker is creating an app in Power Apps and needs to automatically synchronize data from an

external source. The coworker is unable to locate a suitable Microsoft approved connector template in

AppSource.

You need to recommend a solution for the coworker.

What should you recommend?

A. Create a custom connector.

B. Ask the outside source to send you the data once a week.

C. Use Microsoft Flow to connect to the database.

D. Open a ticket with Microsoft and request a new connector.

E. Use Microsoft Azure Service Bus.

Correct Answer: A

Section: Identify the Core Components of Power Platform

Explanation

Explanation/Reference:

Explanation:

There are 250 + predefined connectors that you can use in your PowerApps and in your Microsoft Flows. If

you do not find any that suits your needs you have the possibility to create a Custom Connector.

Note: A Custom Connector is a wrapper around a REST API (Logic Apps also supports SOAP APIs) that

allows Logic Apps, Microsoft Flow, or PowerApps to communicate with that REST or SOAP API.

Reference:

https://carinaclaesson.com/2019/09/06/setting-up-a-custom-connector-from-an-openapi-file-and-utilizing-it-

in-powerapps-and-flow/

QUESTION 21

A toy company creates a text classification model in AI Builder to monitor customer feedback for specific

key words.

When negative feedback is received for a toy, the company wants to proactively perform engineering

reviews for the toy and schedule additional training sessions for workers who produce the toy.

What are two possible ways to achieve the goal? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

A. Create a canvas app.

B. Implement the Virtual Agent.

C. Build a Power Automate flow.

D. Use the Common Data Model.

909A545160E581887343EF295A26525D

Section: Identify the Core Components of Power Platform

Explanation

Explanation/Reference:

Explanation:

Box 1: Yes

The following list provides advantages to using aggregations:

Query performance over big data - as users interact with visuals on Power BI reports, DAX queries are

submitted to the dataset. Boost query speeds by caching data at the aggregated level, using a fraction of

the resources required at the detail level. Unlock big data in a way that would otherwise be impossible.

Box 2: No

You can connect to model-driven apps in Dynamics 365 with Power BI Desktop to create custom reports

and dashboards for use with the Power BI service.

You can use similar steps to connect to model-driven apps in Dynamics 365 using Office Excel Power

Query by selecting From Other Sources on the Power Query tab in Excel.

Box 3: Yes

Using the PowerApps custom visual, you will be able to pass context aware data to a PowerApps app

which updates in real time as you make changes to your report.

Reference:

https://docs.microsoft.com/en-us/power-bi/desktop-aggregations

https://docs.microsoft.com/en-us/power-platform/admin/use-power-bi

https://powerapps.microsoft.com/sv-se/blog/powerbi-powerapps-visual/

QUESTION 23

A company is evaluating ways that they can implement AI Builder.

For which three scenarios can you use AI Builder? Each correct selection presents a complete solution.

NOTE: Each correct selection is worth one point.

A. Send emails to all users who subscribe to a service.

B. Synchronize data from an external database.

C. Collect data from several data sources and display a dashboard that shows trending data.

D. Interpret images and perform an action on the image.

E. Detect patterns in data and predict outcomes.

Correct Answer: BDE

Section: Identify the Core Components of Power Platform

Explanation

Explanation/Reference:

Reference:

https://powerapps.microsoft.com/en-us/blog/introducing-ai-builder-for-powerplatform/

QUESTION 24

HOTSPOT

A company plans to create Power Platform apps that consume industry-standard and proprietary data

sources.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

NOTE: Each correct selection is worth one point.

Hot Area:

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