P.S. Xhs1991がGoogle Driveで共有している無料かつ新しいPlat-Dev-301ダンプ：https://drive.google.com/open?id=1evWu2zSOIp2NQs-QLZ1Vdc0Zqx5H7E6s
我々のPlat-Dev-301問題集はPDF版、ソフト版とオンライン版を含めて、認証試験のすべての問題を全面的に含めています。このPlat-Dev-301問題集の正確率は100％になっています。Plat-Dev-301試験を準備しているあなたは無料のサンプルをダウンロードして利用して、あなたはこのふさわしいPlat-Dev-301問題集を発見することができます。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Architecture | 18% | - Governor limits and bulkification - Design patterns and Apex trigger frameworks - Apex Enterprise Patterns - Namespace and package management |
| Topic 2: Integration | 15% | - Platform Events and Change Data Capture - Named Credentials and authentication - REST and SOAP web services (Apex callouts) - External Services and Connect REST API |
| Topic 3: User Interface | 18% | - Lightning Web Components (LWC) advanced features - Visualforce advanced controllers - Lightning Data Service - Aura Components |
| Topic 4: Data Modeling | 12% | - External objects and data sources - Advanced object relationships and data modeling - Large data volumes considerations |
| Topic 5: Testing, Debugging, and Deployment | 15% | - Debugging and performance profiling - Deployment tools (SFDX, Metadata API) - Apex unit testing best practices - Test data strategies and mocking |
| Topic 6: Logic and Process Automation | 22% | - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Advanced Apex programming - Dynamic Apex and SOQL/SOSL - Invocable Actions and Platform Events |
Plat-Dev-301スタディガイドの優れた利点の1つは、高い合格率です。これは99％に達し、同業他社の平均合格率よりもはるかに高くなっています。当社の高い合格率は、当社が業界トップのPlat-Dev-301準備ガイドである理由を説明しています。自信の源は、素晴らしいPlat-Dev-301試験問題です。 Plat-Dev-301学習教材の練習を約20〜30時間続ける限り、試験に合格しても問題はありません。私たちの専門家は、実際の試験問題に合わせてPlat-Dev-301の質問と回答を設計しました。これは、高い能力で試験に合格するのに役立ちます。
質問 # 202
A developer created a Lightning web component that uses a Lightning_record_edit_fom to collect Information about Leads. Users complain that they only see one error message at a time about their input when trying to save a Lead record.
Which best practice should the developer use to perform the validations on more than one held, thus allowing more than one error message to be displayed simultaneously?
正解：B
解説：
When users need to see multiple error messages at a time related to their input on a form, client-side validation is the preferred method. This allows immediate feedback on the input fields without the need to submit the form to the server.
Option B (Client-side validation) is correct because it enables validation of multiple fields before submitting the form, allowing users to see all error messages at once for the fields that fail validation.
Options A (Apex REST), C (Custom validation rules), and D (Next Best Action) are not directly related to the validation of form inputs in the context of a Lightning web component.
Lightning Web Components Developer Guide: Lightning Web Components and Salesforce Data
質問 # 203
A company has a web page that needs to get Account record information, such as name, website, and employee number. The Salesforce record 1D is known to the web page and it uses JavaScript to retrieve the account information.
Which method of integration is optimal?
正解：D
解説：
For retrieving specific records using a known ID, the REST API is optimal due to its stateless, cacheable communications and lightweight structure. It's ideal for web applications that use JavaScript to make requests directly from the user's browser. Using the REST API, the web page can make a simple HTTP GET request to the Salesforce REST service endpoint and retrieve the account information in a format that's easily handled by JavaScript (typically JSON).
REST API Developer Guide
質問 # 204
Consider the following code snippet:
How should the <e-orders> component communicate to the <c-selected-orders component that an order has been selected by the user?
正解：D
解説：
Create and dispatch a custom event. This approach allows LWC components to communicate effectively, maintaining component encapsulation and reusability.
質問 # 205
A developer is creating a Lightning web component that displays a list of records in a lightning-datatable. After saving a new record to the database, the list is not updating.
What should the developer change in the code above for this to happen?
正解：A
解説：
In Lightning Web Components (LWC), the data displayed in a component is not automatically refreshed when a new record is saved to the database. To refresh the displayed list of records in a lightning-datatable after a save operation, developers should use the refreshApex() function. This function is imported from the @salesforce/apex module and is used to refresh the cache and re-execute the Apex wire method to fetch the latest data from the server. The @track decorator is no longer necessary in most cases due to reactive properties being the default behavior in LWC as of Spring '20 release. Also, calling refreshApex() on this.data directly or creating a new tracked variable will not initiate a refresh of the cached data.
ferences:
Get Updated Data with refreshApex()
Lightning Web Components and Salesforce Data
質問 # 206
An org has an existing process, built using Process Builder, on Opportunity that sets a custom field, CommissionBaseAmount__c, when an Opportunity is edited and the Opportunity's Amount changes.
A developer recently deployed an Opportunity before update trigger that uses the CommissionBaseAmount__c and complex logic to calculate a value for a custom field, CommissionAmount__c, when an Opportunity stage changes to Closed/Won.
Users report that when they change the Opportunity to Closed/Won and also change the Amount during the same save, the CommissionAmount__c is incorrect.
Which action should the developer take to correct this problem?
正解：C
解説：
The issue described is likely due to the order of execution in Salesforce, where processes in Process Builder run after all before triggers. If the Opportunity's Amount is changed and the CommissionBaseAmount__c is set by Process Builder, the trigger that calculates CommissionAmount__c may not see the updated value if it operates before the process.
Replacing the process with a before-save record-triggered flow (formerly known as Fast Field Update) would ensure that CommissionBaseAmount__c is updated before the trigger runs. In a before-save flow, field updates occur before any Apex before update triggers fire, which means the trigger would have the updated value of CommissionBaseAmount__c to use in its calculation.
eferences:
Order of Execution in Salesforce
Before-Save Record-Triggered Flows
質問 # 207
......
合格テストを準備する過程で、Plat-Dev-301ガイド資料とサービスがあなたを支援します。時間とエネルギーを節約して、タイムスケジュールの調整、関連する書籍や文書の検索、権限のある人への問い合わせを行うことができます。私たちの学習教材は確かに有効で高効率なので、Plat-Dev-301試験のワンショットに本当に合格したい場合は、私たちを選択する必要があります。私たちのPlat-Dev-301トレーニングエンジンの多くの利点を活用して、あなたの強さを強化するのに役立つ、Plat-Dev-301学習教材の使用プロセスをご覧ください。
Plat-Dev-301練習問題: https://www.xhs1991.com/Plat-Dev-301.html
さらに、Xhs1991 Plat-Dev-301ダンプの一部が現在無料で提供されています：https://drive.google.com/open?id=1evWu2zSOIp2NQs-QLZ1Vdc0Zqx5H7E6s