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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: User Interface | 20% | - Describe the use cases for the Lightning Data Service. - Describe the nuances of the component communication patterns. - Describe the process for creating Lightning Web Components. - Describe the use cases for component events and application events. - Describe the use cases for the different Lightning Web Component lifecycle hooks. - Describe the nuances of event propagation in Aura and Lightning Web Components. - Describe the use cases for the different Aura component bundle files. - Describe the process for creating Aura components. - Given a scenario, identify the correct communication mechanism. |
| Topic 2: Performance | 18% | - Describe the performance implications of the different trigger types. - Describe the performance implications of the different asynchronous Apex features. - Describe the common performance issues for user interfaces and the techniques to mitigate them. - Describe the considerations for query performance. |
| Topic 3: Testing, Debugging, and Deployment | 20% | - Describe the process for deploying Salesforce applications. - Describe the nuances of testing Lightning Web Components. - Given a scenario, identify the appropriate test setup logic. - Describe the nuances of testing Aura components. - Describe the nuances of testing Apex triggers. - Describe the process for debugging Apex. - Describe the best practices for testing Apex. - Describe the nuances of testing Visualforce controllers. - Describe the process for debugging Aura and Lightning Web Components. |
| Topic 4: Advanced Developer Fundamentals | 15% | - Use the sObject describe result and field describe result to get information about sObjects and fields. - Describe the relationship between Apex transactions, the save order of execution, and the potential for recursion and/or cascading. - Describe the capabilities of the Schema.describeSObjects() method. - Describe the use cases for the System.Limits Apex methods. - Identify the best practices for writing Apex triggers. - Describe the capabilities of the Schema.describeTabs() method. - Given a scenario, identify the use of custom metadata and custom settings. - Describe the nuances of Apex sharing rules and the difference between declarative and programmatic sharing. |
| Topic 5: Process Automation, Logic, and Integration | 27% | - Describe the use cases for the Schedulable interface. - Given a scenario, identify the appropriate asynchronous Apex feature. - Describe the use cases for the Batchable interface. - Describe the use cases for the publish-subscribe pattern. - Describe the use cases for Platform Events. - Describe the use cases for and nuances of Apex managed sharing. - Describe the use cases for the Callable interface. - Describe the use cases for the Queueable interface. - Describe the use cases for the ConnectApi classes. - Describe the nuances of Apex triggers. - Describe the use cases for and implications of the order of execution. - Describe the nuances of SOQL for loops. |
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NEW QUESTION # 54
Universal Containers では、取引先に Apex トリガがあり、取引先が顧客としてマークされるとアカウントプランレコードが作成されます。最近、日付項目を更新するためのレコードトリガーフローが追加されました。フローの追加以降、2 つのアカウントプランレコードが作成されています。これは何が原因でしょうか？
Answer: B
Explanation:
This is a classic case of trigger recursion caused by the Salesforce Order of Execution. When an Account is updated to "Customer," the following occurs:
* The original "Before" and "After" triggers run. The After trigger creates the first Account Plan.
* The Record-Triggered Flow executes and updates the "Customer Since" date field.
* Because a Flow (or Workflow) performed a field update, Salesforce re-triggers the Apex triggers on the Account object to ensure any logic dependent on that new date field is executed.
* During this second pass, the After trigger runs again and, seeing the status is still "Customer," creates a second Account Plan.
To prevent this, developers use a static variable (Option D) in a handler class to act as a "recursion guard." Static variables persist for the duration of the entire transaction. By checking this variable at the start of the trigger, the code can detect that it has already run once and skip the record creation on the second pass. Option B and C describe standard Flow behavior but are not the "fix" for the trigger logic. Option A would cause issues with limits but wouldn't necessarily cause a double-fire unless recursion was involved.
NEW QUESTION # 55
開発者は、Lightning Web コンポーネントのスタイルと動作を制御する変数を保存する必要があります。
本番環境とすべてのサンドボックスの両方で変数を確実にテストできるようにするには、どの機能を使用できますか?
Answer: A
Explanation:
Custom metadata types are the best feature for storing variables that control style and behavior of a Lightning Web Component. Unlike custom settings, custom metadata is deployable and testable in both Production and all Sandboxes.References: Salesforce Help - Custom Metadata Types Overview
NEW QUESTION # 56 
上記のトリガーは、アカウントをアカウントのリージョンのマネージャーに割り当てることを目的としていると考えてください。開発者がベスト プラクティスに従うために、このトリガーに加えるべき 2 つの変更はどれですか? 2 つの答えを選択してください
Answer: A,C
NEW QUESTION # 57
開発者が Lightning Web コンポーネントの Jest テストを作成する必要がある 3 つの理由は何ですか?
3つの答えを選択してください
Answer: B,C,D
NEW QUESTION # 58
開発者は、フィルター機能を備えた Lightning Web コンポーネントにカスタム データ テーブルを実装しました。
しかしながら、フィルターを変更すると読み込み時間が長くなるという件で、ユーザーからサポートチケットが提出されています。このコンポーネントは、選択されたフィルターに基づいてレコードをクエリするために呼び出されるApexメソッドを使用しています。開発者はコンポーネントのパフォーマンスを改善するために何をすべきでしょうか？
Answer: C
Explanation:
When a data table experiences slow performance during filtering, the root cause is often "non-selective" queries that result in full table scans. In Salesforce, a query is selective when it uses an indexed field in the WHERE clause and filters down to a small percentage of the total records (typically 10% of the first million).
Option D is the correct strategy. By ensuring that the filter fields (such as a Status or Category) are either standard indexed fields or custom fields marked as "External ID" or "Unique" (which creates a custom index), the Query Optimizer can quickly locate the relevant rows. This significantly reduces the database processing time and the "Time to First Byte" (TTFB) returned to the Lightning component.
Option C might seem attractive for small datasets, but it is not scalable; if the org has 50,000 records, returning all of them to the client will crash the browser's heap memory. Option B (setStorable) is an Aura- specific concept and is replaced by @AuraEnabled(cacheable=true) in LWC, but even caching doesn't help if the initial query itself is slow. Option A (SOSL) is for text searching across multiple objects and is generally less efficient than a targeted SOQL query for specific field filtering. Using a selective SOQL query ensures the component remains fast as data volume grows.
NEW QUESTION # 59
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