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| Section | Weight | Objectives |
|---|---|---|
| User Interface | 20% | - Describe the use cases for the different Lightning Web Component lifecycle hooks. - Describe the use cases for component events and application events. - Describe the process for creating Aura components. - Describe the nuances of event propagation in Aura and Lightning Web Components. - Describe the use cases for the Lightning Data Service. - Describe the use cases for the different Aura component bundle files. - Describe the nuances of the component communication patterns. - Given a scenario, identify the correct communication mechanism. - Describe the process for creating Lightning Web Components. |
| Testing, Debugging, and Deployment | 20% | - Given a scenario, identify the appropriate test setup logic. - Describe the process for debugging Aura and Lightning Web Components. - Describe the nuances of testing Aura components. - Describe the best practices for testing Apex. - Describe the nuances of testing Apex triggers. - Describe the nuances of testing Visualforce controllers. - Describe the nuances of testing Lightning Web Components. - Describe the process for deploying Salesforce applications. - Describe the process for debugging Apex. |
| Advanced Developer Fundamentals | 15% | - Describe the use cases for the System.Limits Apex methods. - Use the sObject describe result and field describe result to get information about sObjects and fields. - Describe the capabilities of the Schema.describeTabs() method. - Describe the capabilities of the Schema.describeSObjects() method. - Describe the relationship between Apex transactions, the save order of execution, and the potential for recursion and/or cascading. - Given a scenario, identify the use of custom metadata and custom settings. - Identify the best practices for writing Apex triggers. - Describe the nuances of Apex sharing rules and the difference between declarative and programmatic sharing. |
| Performance | 18% | - Describe the considerations for query performance. - Describe the common performance issues for user interfaces and the techniques to mitigate them. - Describe the performance implications of the different asynchronous Apex features. - Describe the performance implications of the different trigger types. |
| Process Automation, Logic, and Integration | 27% | - Describe the use cases for the publish-subscribe pattern. - Given a scenario, identify the appropriate asynchronous Apex feature. - Describe the use cases for and nuances of Apex managed sharing. - Describe the use cases for and implications of the order of execution. - Describe the use cases for the Schedulable interface. - Describe the use cases for the Batchable interface. - Describe the use cases for Platform Events. - Describe the use cases for the Queueable interface. - Describe the use cases for the Callable interface. - Describe the use cases for the ConnectApi classes. - Describe the nuances of SOQL for loops. - Describe the nuances of Apex triggers. |
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NEW QUESTION # 93
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: A,B,C
Explanation:
Jest tests are essential for developing Lightning Web Components (LWC) because they allow developers to ensure the quality and correctness of their components in isolation from the rest of the application. Reason A is incorrect because testing non-public properties breaks encapsulation and is considered bad practice. B is correct because Jest tests can simulate user interactions with the component, such as clicking buttons or entering text, to ensure it behaves as expected. C is correct as well because Jest tests can confirm that the component renders the expected DOM output, which is crucial for ensuring that the HTML structure of the component is accurate. D is not the best choice since Jest is more suited for testing components in isolation rather than how multiple components interact; integration tests are more appropriate for that. Lastly, E is correct because Jest tests can verify that events are fired at the appropriate times, which is a critical part of the component's interaction with the rest of the application.
References
Jest Testing: Lightning Web Components Testing
Jest Testing Best Practices: Lightning Web Components Jest Best Practices
NEW QUESTION # 94
次のコード スニペットを検討してください。
ジャワ
HttpRequest req = 新しい HttpRequest();
エンドポイントを 'https://TestEndpoint.example.com/some_path' に設定します。
req.setMethod('GET');
Blob headerValue = Blob.valueOf('myUserName' + ':' + 'strongPassword'); String authorizationHeader = 'BASIC ' + EncodingUtil.base64Encode(headerValue); req.setHeader('Authorization', authorizationHeader); Http http = new Http(); HTTPResponse res = http.send(req); コードを変更せずにエンドポイントと資格情報を変更するための柔軟性を追加するには、開発者が実行する必要がある 2 つの手順はどれですか?1
Answer: C,D
Explanation:
7
The provided code uses hard-coded strings for the URL and authe8ntication headers, which is a security risk and makes maintenance difficult. To add flexibility and security, Salesforce provides Named Credentials (Option D). A Named Credential acts as a single definition that encapsulates both the endpoint URL and the required authentication (Basic, OAuth, etc.) in a single Setup record.
By using the callout: protocol in the setEndpoint method (Option B), the developer instructs the Apex runtime to look up the configuration stored in the Named Credential named endPoint_NC. This approach provides several key benefits:
* Security: Credentials like passwords are encrypted and stored safely in the platform's metadata, not in the code.
* Simplified Code: The logic for building the Authorization header and base64 encoding (as seen in the original snippet) is handled automatically by the platform.
* Maintainability: If the endpoint URL or the password changes, an administrator can update the Named Credential record via the UI without requiring any code deployment.
Custom Labels (Option A and C) can store URLs, but they cannot securely handle authentication logic or headers. Therefore, the combination of a Named Credential and the callout: syntax is the optimal platform- native solution for flexible and secure integrations.
NEW QUESTION # 95
開発者は、単一のカスタム コントローラーを使用して複数ページのウィザードを構築し、データのクエリと更新を行いました。
を。ユーザーは、ページの読み込みが遅いと不満を漏らしています。
何がパフォーマンスを向上させますか? （3つ選んでください。）
Answer: A,D,E
NEW QUESTION # 96
次のクエリを検討してください。これらのクエリでは、200,000 を超える取引先レコードがあると想定しています。これらのレコードには、論理的に削除されたレコードが含まれます。つまり、まだごみ箱にある削除済みレコードです。アカウントには、外部 ID としてマークされている 2 つのフィールドがあることに注意してください。これらのフィールドは Customer_Number__c と ERP_Key__c です。
大量のデータに対して最適化されている 2 つのクエリはどれですか? 2つの答えを選択してください
Answer: A,B
NEW QUESTION # 97
開発者は、次のテスト メソッドを作成しました。
開発者組織には、名前が Test で始まる 5 つのアカウントがあります。開発者は、開発者コンソールでこのテストを実行します。
テスト コードの実行後、正しいステートメントはどれですか?
Answer: D
NEW QUESTION # 98
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