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Salesforce DEX-450日本語 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Programmatic Development using Apex and Visualforce in Lightning Experience |
| Exam Number: | DEX-450 |
| Exam Format: | Multiple Choice, Multiple Select |
| Available Languages: | English |
| Real Exam Qty: | 60 |
| Passing Score: | 68% |
| Related Certifications: | Salesforce Certified Administrator Platform Developer II (PDII) |
| Exam Price: | $200 USD |
| Exam Duration: | 120 minutes |
| Certificate Validity Period: | 2 years (for certification) |
| Sample Questions: |  |
| Exam Way: | In-person testing center or online proctored exam |
| Pre Condition: | No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/platform-developer-exam |
Salesforce DEX-450日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Apex Transaction Management | 10% | - Transaction Control
|
| Visualforce Pages | 8% | - VF Standard Components
|
| Apex Triggers | 12% | - Trigger Best Practices
|
| Apex Fundamentals | 10% | - Apex Basics
|
| Apex Classes and Interfaces | 12% | - Apex Interfaces
|
| Working with Data - SOQL and SOSL | 15% | - SOSL (Salesforce Object Search Language)
|
| Asynchronous Apex | 10% | - Batch Apex
|
| Apex Testing | 13% | - Testing Best Practices
|
Common Questions About the Salesforce DEX-450日本語 Exam
What is the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) exam all about?
The DEX-450日本語 exam is the official Salesforce exam behind the Salesforce Developer certification, validating the skills measured by the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) credential. It sits at the Platform Developer I level of the Salesforce certification program. It also connects to Platform Developer II (PDII), Salesforce Certified Administrator, so the knowledge you build here carries over to those tracks as well.
How many questions are on the DEX-450日本語 exam, and how much time do I get?
The DEX-450日本語 exam contains 60 questions to be completed within 120 minutes. Before exam day, divide the available time by the question count to work out a comfortable per-question pace, and mark any item that eats into it so you can return later instead of getting stuck. Timed sessions in the Getcertkey test engines make that pacing automatic — run at least two full-length mock exams under the clock so time pressure never becomes the reason you drop points.
What score do I need to pass the DEX-450日本語 exam, and what does it cost?
The passing score for the DEX-450日本語 exam is 68%, and the official registration fee is $200 USD. Retakes are not discounted — every new attempt means paying the full fee again — so it pays to measure yourself before you book. Work through the 202 practice questions on Getcertkey, sit a timed practice test, and schedule your exam only when your scores are consistently comfortable. That simple habit is the cheapest exam strategy there is.
Are there any prerequisites for the DEX-450日本語 exam?
No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules Requirements can change when Salesforce revises its certification program, so confirm the current eligibility rules on the official exam page before you register.
Can I try the DEX-450日本語 practice questions before I buy?
Yes. Getcertkey provides a free DEX-450日本語 PDF demo so you can review the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates — if Salesforce revises the exam during that period, the updated material reaches you at no cost. Once the free-update year ends, you can extend your update service at a 50% discount.
What if I fail the DEX-450日本語 exam, and how is my order delivered?
Every Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) purchase on Getcertkey is covered by a 100% money-back guarantee with clear conditions: if you take the corresponding exam within 60 days of your purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip and your official score report as a PDF within two days of the exam date; claims are processed within seven days of submission. The guarantee does not apply to exams taken within three days of purchase, to material that was downloaded but never used in an exam attempt, or to free products and expired orders, and the candidate name must match the payer name. If you would rather not take a refund, you can instead exchange your purchase for two free exam preparation products of equal value and keep the update service on your original product.
Delivery is instant: your download is sent to your email within one minute of payment, with no limit on how many computers you may install the material on. If nothing arrives within two hours, check your spam folder and contact customer service for help.
What topics are covered in the DEX-450日本語 exam?
The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) exam blueprint is organized into 8 domains. The first three are:
- Visualforce Pages — 8% of the exam
- Asynchronous Apex — 10% of the exam
- Apex Triggers — 12% of the exam
For the complete domain-by-domain breakdown, scroll up to the full exam topics outline above and use it to plan how you distribute your study time.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) Sample Questions:
Question 1
Universal Containers は、システムで作成されたすべての新しいリードに有効な電子メール アドレスがあることを確認したいと考えています。この要件を強制する検証ルールはすでに作成されていますが、自動化を使用して検証のレイヤーを追加したいと考えています。
この要件に対する最善の解決策は何でしょうか?
A. 承認プロセスを使用して、送信メッセージ アクションで有効な電子メール アドレスの入力を強制します。
B. リードオブジェクトの保存前Apexトリガーを使用してメールアドレスを検証し、無効な場合はエラーメッセージを表示します。
C. カスタム Lightning Web コンポーネントを使用して、サードパーティ システムのフィールドを検証するためのコールアウトを作成します。
D. JSONペイロードを含むREST APIコールアウトを送信し、サードパーティシステムのフィールドを検証します。
Question 2
Universal Containers では、ユーザーが自分のアカウントに関する情報を入力できるようにするカスタム ユーザー インターフェイス コンポーネントを作成する必要があります。
コンポーネントは、情報をデータベースに保存する前にユーザー入力を検証できる必要があります。
このコンポーネントを作成するのに最適なテクノロジは何ですか?
A. VUE JavaScript フレームワーク
B. Lightning Web コンポーネント
C. フロー
D. ビジュアルフォース
Question 3
開発者は、Expense _c オブジェクトで次のトリガーを識別します。
トリガーは、それぞれ削除前、挿入前、更新イベントの前に処理されます。
トリガーのベスト プラクティスに従うために、開発者が実装する必要がある 2 つの手法はどれですか。
2つの回答を選択してください
A. 挿入前トリガーと更新前トリガーを統合し、削除アクションにフローを使用します。
B. Unity の 3 つのトリガーすべてが、すべてのイベントを含む Expense__c オブジェクトの単一のトリガーになります。
C. レコードが保存されるときに適切なロジックを実行するためのヘルパー クラスを作成します。
D. Expense __c オブジェクトの 3 つのトリガーをすべて維持しますが、Apex ロジックをトリガー定義から移動します。
Question 4
Flow Builder は Apex アクションを使用して、カスタム クラス ContactInfo に保存されている複数の連絡先に関する追加情報を提供します。追加情報を取得する Apex メソッドの正しい定義はどれですか。
A)
B)
C)
ダ）
A. オプションA
B. オプションC
C. オプションD
D. オプションB
Question 5
Universal Containers は、ユーザーが必要なアカウントを見つけやすくするために、カスタム検索ページを作成する開発者を雇用しています。ユーザーは、名前、説明、カスタム コメント フィールドで検索できます。
SOQL と SOSL のどちらを選択するかを決定する際に、開発者が考慮すべき点は何ですか?
2つの回答を選択してください
A. SOSL はより多くのレコードを返すことができます。
B. テキスト検索では SOSL の方が高速です。
C. SOQL はテキスト検索が高速です。
D. SOQLはより多くのレコードを返すことができる
Solutions:
| Question 1 Answer: B | Question 2 Answer: B | Question 3 Answer: B,C | Question 4 Answer: B | Question 5 Answer: B,D |
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