2021微软PowerPlatform基础考试题库：PL-900，恢复版本策略解析

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在Microsoft Power Platform Fundamentals (PL-900) 考试中，题目1探讨了如何理解应用程序版本管理。当你创建一个新的Power Apps应用版本并发布后，如果用户选择恢复到先前版本，那么在应用的版本页面上，将会看到两个版本。原文提到"you will see two versions of the app"，这表明在Power Apps中，恢复旧版本时确实会显示两个版本：当前新版本和已恢复的旧版本。这部分内容强调了Power Platform的业务价值，特别是在灵活性和版本控制方面。Power Apps允许用户在需要时回滚到之前的工作版本，这对于维护和管理应用程序的状态至关重要。对于开发人员和管理员来说，了解如何在版本历史中进行操作，比如通过步骤1-4中的"Restore"功能，能够确保正确地维护应用程序的稳定性，并确保客户能够访问他们习惯或依赖的功能。 Section: 描述Power Platform的业务价值 Power Platform提供了一种强大的工具集，其核心价值在于： 1. **版本管理**：通过支持多版本应用，用户可以轻松地切换和恢复到不同的工作状态，降低了因误操作导致的问题，提高了生产力。 2. **适应性**：企业可以根据需求快速迭代和调整应用程序，保持与业务发展的同步。 3. **协作效率**：团队成员可以同时开发多个版本，便于协作和测试，同时保证最终版本的质量。 4. **用户体验一致性**：即使回滚到旧版本，用户仍能保持一定的连续性和熟悉感，减少了学习成本。 5. **数据安全与备份**：通过版本控制，有助于防止数据丢失，保护企业的敏感信息。 6. **降低风险**：有了版本恢复选项，可以更有效地处理可能的故障或错误，降低因技术问题造成的业务中断。解释/参考： - 在Power Apps中，要恢复一个应用程序到某个版本，首先打开Power Apps网站，找到目标应用，点击“版本”选项卡，然后选择“恢复”功能。这个过程确保了对应用程序版本的精确管理，是平台为企业带来的关键业务价值之一。 Power Platform的版本控制能力对于企业而言是一项重要的技术资产，它在维护应用稳定性、提升团队协作效率以及支持灵活的业务响应上发挥了重要作用。

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

nityte

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.

nityte

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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