Last Updated: Aug 17, 2026
No. of Questions: 163 Questions & Answers with Testing Engine
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| Section | Objectives |
|---|---|
| Topic 1: Integration and Security | - Integration patterns
|
| Topic 2: User Interface Development | - Lightning Component Development
|
| Topic 3: Testing, Debugging, and Deployment | - Deployment practices
|
| Topic 4: Advanced Apex Programming and Data Modeling | - Advanced Apex concepts
|
1. Visualforce ページで transient キーワードを使用すると、どのパフォーマンスの問題の解決に役立ちますか?
A) ビューステートを減らす
B) クエリパフォーマンスが向上します
C) ページ転送を改善します
D) 読み込み時間を短縮します
2. Visualforceページは、表示されるデータ量が多いため、読み込みが遅くなります。開発者はどのような戦略を用いてパフォーマンスを改善できますか?
A) JavaScript を使用して、データ処理をコントローラーではなくブラウザーに移動します。
B) コントローラーのコンストラクターではなく、遅延読み込みを使用して、要求に応じてデータを読み込みます。
C) カスタム コントローラーで使用されるリスト変数に transient キーワードを使用します。
D) ページ内で <apex:actionPoller> を使用して、すべてのデータを非同期的に読み込みます。
3. 開発者は、組織内のすべてのカスタム オブジェクトのドロップダウン リストを表示する Lightning Web コンポーネントを作成します。
Apexメソッドはデータを準備し、コンポーネントに返します。開発者はレスポンスに含めるオブジェクトを決定するために何をすべきでしょうか?
A) sObject の記述結果で、getObjectType() の値が 'Custom' か 'Standard' かを確認します。
B) Schema クラスの getCustomObjects() メソッドを使用します。
C) sObject の記述結果の isCustom() 値を確認します。
D) @salesforce/schema からすべてのカスタム オブジェクトのリストをインポートします。
4. 次のコード スニペットを検討してください。
ジャワ
01 共有クラス AccountsController のパブリック{
03 @オーラ対応
04 パブリックリスト<アカウント> getAllAccounts(){
05 return [アカウントからID、名前、業種を選択];
06 }
08 }
デプロイメント サイクルの一環として、開発者は次のテスト クラスを作成します。
Java
@isTest
private class AccountsController_Test{
@TestSetup
private static void makeData(){
User user1 = [Select Id FROM User WHERE Profile.Name = 'System Administrator' ... LIMIT 1]; User user2 = [Select Id FROM User WHERE Profile.Name = 'Standard User' ... LIMIT 1]; TestUtils.insertAccounts(10,user1.Id); TestUtils.insertAccounts(20,user2.Id);
}
@isTest
private static void testGetAllAccounts(){
// Query the Standard User into memory
List<Account> result = AccountsController.getAllAccounts();
System.assertEquals(20,result.size());
}
}
テストクラスを実行すると、アサーションが失敗します。テストメソッドが正常に実行されるようにするには、開発者はApexテストメソッドにどのような変更を加える必要がありますか?
A) 12 行目に @IsTest(seeAllData=true) を追加し、15 行目と 16 行目を Test.startTest() と Test で囲みます。
stopTest() を実行します。
B) 管理者ユーザーをメモリに照会し、行 15 と 16 を System.runAs(user) メソッド内に囲みます。
C) 14 行目に System.runAs(User) を追加し、15 行目を Test.startTest() と Test.stopTest() で囲みます。
D) 標準ユーザーをメモリに照会し、行 15 と 16 を System.runAs(user) メソッド内に囲みます。
5. 一括安全な Apex トリガーを作成するためのベストプラクティスと考えられるステートメントはどれですか?
A) すべての DML 操作を future メソッド内から実行します。
B) すべての SOQL ステートメントに LIMIT 50000 を追加します。
C) コレクションにレコードを追加し、これらのコレクションに対して DML 操作を実行します。
D) DML ステートメントの代わりに、allOrNone を false に設定したデータベース メソッドを使用します。
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: C |
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