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| Section | Weight | Objectives |
|---|---|---|
| Testing, Debugging, and Deployment | 20% | - Given a scenario, identify the appropriate test setup logic. - Describe the nuances of testing Lightning Web Components. - Describe the process for deploying Salesforce applications. - Describe the process for debugging Apex. - Describe the nuances of testing Apex triggers. - 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 Visualforce controllers. |
| Advanced Developer Fundamentals | 15% | - Identify the best practices for writing Apex triggers. - 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 nuances of Apex sharing rules and the difference between declarative and programmatic sharing. - Describe the capabilities of the Schema.describeTabs() 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. - Describe the capabilities of the Schema.describeSObjects() method. |
| Process Automation, Logic, and Integration | 27% | - Describe the use cases for the publish-subscribe pattern. - Describe the nuances of SOQL for loops. - Describe the nuances of Apex triggers. - Given a scenario, identify the appropriate asynchronous Apex feature. - Describe the use cases for and implications of the order of execution. - Describe the use cases for the Queueable interface. - Describe the use cases for and nuances of Apex managed sharing. - Describe the use cases for Platform Events. - Describe the use cases for the Schedulable interface. - Describe the use cases for the ConnectApi classes. - Describe the use cases for the Batchable interface. - Describe the use cases for the Callable interface. |
| User Interface | 20% | - 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 Lightning Web Component lifecycle hooks. - Given a scenario, identify the correct communication mechanism. - Describe the process for creating Aura components. - Describe the process for creating Lightning Web Components. - Describe the use cases for the different Aura component bundle files. - Describe the use cases for component events and application events. - Describe the nuances of the component communication patterns. |
| Performance | 18% | - Describe the common performance issues for user interfaces and the techniques to mitigate them. - Describe the performance implications of the different trigger types. - Describe the considerations for query performance. - Describe the performance implications of the different asynchronous Apex features. |
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NEW QUESTION # 75
開発者は、商談のステージが何回変更されたかを追跡する既存の機能を使用しています。Opportunity のステージが変更されると、フィールドの値を 1 つ増やすワークフロー ルールが起動されます。開発者は、フィールドが 4 から 5 に変更されたときに子レコードを作成するための after トリガーを作成しました。
ユーザーが商談のステージを変更し、カウント フィールドを手動で 4 に設定します。カウント フィールドは 5 に更新されますが、子レコードは作成されません。
このようなことが起こっている理由は何ですか?
Answer: B
Explanation:
The reason this is happening is that Trigger.old does not contain the updated value of the count field. Trigger.old is a list of the old versions of the sObject records, before any changes were made in the trigger. Trigger.new is a list of the new versions of the sObject records, after any changes were made in the trigger. In this case, the workflow rule is fired after the trigger, and updates the count field from 4 to 5. However, the trigger does not see this change, as it only compares the values in Trigger.old and Trigger.new, which are both 4. To fix this, the developer should use an after update trigger, and re-query the updated records to get the latest values of the count field. After triggers fire before workflow rules is incorrect, as workflow rules fire after triggers. Trigger.new does not change after a field update is incorrect, as Trigger.new does change after a field update, but only within the same trigger context. After triggers are not fired after field updates is incorrect, as after triggers are fired after field updates, unless the field updates are made by a workflow rule or a process. Reference: [Triggers and Order of Execution], [Trigger Context Variables], [Apex Developer Guide]
NEW QUESTION # 76
開発者は、取引先の登録に使用される Lightning Web コンポーネントからの入力に基づいて取引先を更新する Apex クラスを作成しました。アカウントの更新は、まだ登録されていない場合にのみ行う必要があります。
ユーザーが同時に更新を行った場合に、同じアカウントに対する互いの更新を上書きしないようにするために、開発者は何をすべきですか?
Answer: D
NEW QUESTION # 77
ページが連絡先に対して「null オブジェクトを逆参照しようとしました」エラーをスローします。
コントローラーのどのような変更を行うとエラーが修正されますか?
Answer: A
Explanation:
The best way to fix the error is to use a condition in the getter to return a new Contact if it is null. This way, the developer can avoid the attempt to dereference a null object error, which occurs when the developer tries to access a property or a method of a null object. By checking if the sObject attribute is null, and returning a new Contact instance if it is, the developer can ensure that the sObject attribute is always initialized and can be used in the Visualforce page. Declaring a static final Contact at the top of the controller will not fix the error, as it will not initialize the sObject attribute, and it will also prevent the Contact from being modified. Changing the setter's signature to return a Contact will not fix the error, as it will not affect the getter, and it will also violate the setter's convention, which is to return void. Changing the getter's signature to be static Contact will not fix the error, as it will not initialize the sObject attribute, and it will also prevent the getter from accessing the instance variables of the controller. Reference: [Visualforce Controllers], [Apex Properties], [Apex Developer Guide]
NEW QUESTION # 78
Universal Containers は Salesforce を使用して、顧客への製品提供を管理しています。
ある開発者が、Salesforce に保存されている製品情報をアプリ ユーザーがリアルタイムで表示できるようにする必要があるカスタム モバイル アプリを構築しています。
開発者は、Salesforce から製品情報を取得するために何を使用する必要がありますか?
Answer: C
NEW QUESTION # 79
ある企業には、Salesforce に接続してさまざまなオブジェクトから統合情報を JSON 形式で取得する必要があるネイティブ iOS 注文アプリケーションがあります。
これを Salesforce に実装する最適な方法はどれですか?
Answer: C
Explanation:
Apex REST web services are the best method for creating custom endpoints that return data in a specific format, such as JSON, which is perfect for a native iOS application that needs to integrate with Salesforce for retrieving data.References: Apex Developer Guide - Exposing Apex Methods as REST Web Services
NEW QUESTION # 80
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