Try and practice the latest Salesforce : DEX-450日本語 real questions & answers

Last Updated: Oct 29, 2026

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Salesforce DEX-450日本語 Practice Q&A's

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Some candidates buy study materials hoping for a shortcut; experienced ones look for materials that respect their time. The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) package at Actual4Cert is built for the second group: 202 practice questions aligned with the real DEX-450日本語 exam format, verified answers, and a free demo to check the fit first.

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
Certificate Validity Period:3 years
Related Certifications:Salesforce Platform Developer II
Exam Format:Multiple Choice, Scenario-based, Multiple Select
Passing Score:65%–80%
Real Exam Qty:60–85
Exam Duration:105–120
Available Languages:English
Exam Price:$200 USD
Recommended Training:Build Applications Programmatically on the Salesforce Platform (DEX450)
Exam Registration:Salesforce Certification Portal
Sample Questions: DOWNLOAD DEMO
Exam Way:Online proctored or onsite testing center
Pre Condition:Understanding of declarative development; experience with object-oriented programming; completion of recommended training or equivalent knowledge
Official Syllabus URL:https://trailhead.salesforce.com/en/credentials/platform-developer-i

Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionWeightObjectives
Data Modeling and Management20%- Custom objects, fields, and relationships
  • 1. Record types and business processes
  • 2. Formula and roll-up summary fields
Apex Classes, Triggers, and Execution20%- Class structure, methods, and access modifiers
  • 1. Trigger types, context variables, and save order of execution
  • 2. Static variables and platform events
Visualforce Development15%- Page creation and standard controllers
  • 1. Custom controllers and controller extensions
  • 2. Integrating Visualforce with Lightning Experience
Data Retrieval and Manipulation20%- SOQL and SOSL queries
  • 1. Relationship queries and parent-child traversal
  • 2. DML operations and error handling
Apex Programming Fundamentals25%- Apex syntax, data types, and control structures
  • 1. Governor limits and multi-tenant considerations
  • 2. Apex transactions and execution context

DEX-450日本語 Exam Basics: What Every Candidate Asks

The DEX-450日本語 exam is the required test for earning the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) certification from Salesforce. It assesses your command of the official exam objectives through scenario-based and knowledge questions, and the resulting credential is widely recognized by employers. Its reputation for difficulty is real but manageable — candidates who practice consistently with quality materials routinely walk in well prepared.

The official outline for the DEX-450日本語 exam highlights these domains:

  • Data Modeling and Management (20%)
  • Apex Programming Fundamentals (25%)
  • Apex Classes, Triggers, and Execution (20%)

Seeing the topics laid out this way often shrinks the exam's intimidation factor — each domain is a finite, learnable block, and the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) practice questions at Actual4Cert follow the same structure.

Understanding of declarative development; experience with object-oriented programming; completion of recommended training or equivalent knowledge

The DEX-450日本語 exam is demanding, but its difficulty is specific, not mysterious: unfamiliar question formats, time pressure, and a few heavily weighted domains. All three respond to the same remedy — repeated, timed exposure to exam-style questions. That is what the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) practice materials at Actual4Cert provide, and the free demo lets you measure the real difficulty yourself before committing, which is usually the moment the fear starts shrinking.

The DEX-450日本語 exam consists of 60–85 questions with a time allowance of 105–120 minutes. Practicing full sets under a similar time cap is the most direct way to make sure pacing never costs you points on exam day.

Salesforce offers these training resources for candidates:

Official courses explain the material; practice questions teach you how the exam asks about it. Most successful candidates use both.

Because seeing beats guessing. The free demo of the DEX-450日本語 exam materials at Actual4Cert contains genuine samples from the full Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) question set — same format, same expert-verified answers — and downloading it costs nothing. If you are unsure whether the materials match your level or your study style, the demo answers that question with evidence rather than marketing, and every demo on the site is free of charge.

The passing score is 65%–80% and the exam fee is $200 USD. Knowing both numbers early helps you plan: aim to be consistently above the passing mark in timed practice sessions before you spend the fee on a booking.

Registration is available through the following official channels:

Many candidates find that booking a date early converts vague anxiety into a focused countdown — a useful psychological trick while working through the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) practice questions.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) Sample Questions:

Question #1

開発者は、ユーザーが取引先責任者レコード情報を入力して、給与 c カスタム フィールドを含む取引先責任者レコードを作成できるようにする Lightning コンポーネントを作成する必要があります。
Salary__c フィールドが通貨入力として機能し、Salary _c に対して適切なフィールド レベルの権限を持つユーザーのみが表示および編集できるようにするには、開発者は lightning-record-edit-form とともに何を使用すればよいでしょうか。

  • A.
  • B.
  • C.
  • D.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

リード開発者が Laptop という Apex インターフェースを作成します。次のコード スニペットを検討してください。
パブリッククラス SilverLaptop{
//コード実装
開発者は silverLaptop クラス内で Laptop インターフェイスをどのように使用できますか?

  • A.
  • B.
  • C.
  • D.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #3

カスタム Scalable Vector Graphic (SVG) を Lightning Web コンポーネントに含めることができる 3 つの手順はどれですか?
3つの回答を選択してください

  • A. HTML テンプレート内のプロパティを参照します。
  • B. 静的リソースをインポートし、それに JavaScript プロパティを指定します。
  • C. SVG をコンテンツ アセット ファイルとしてインポートします。
  • D. SVG を静的リソースとしてアップロードします。
  • E. HTML テンプレート内のインポートを参照します。
Reveal Solution  Discussion  0

Correct Answer: B,D,E  🗳️

Question #4

Apex テストクラスで @testSetup アノテーションを使用することに関して正しい 2 つの記述はどれですか。
2つの回答を選択してください

  • A. テスト セットアップ メソッドでは、テスト データが 1 回挿入され、テスト クラス内のすべてのテスト メソッドで使用できるようになります。
  • B. @isTest(SeeAllData=True) アノテーションが使用されている場合、@testSetup アノテーションはサポートされません。
  • C. テストセットアップメソッドで作成されたレコードは、個々のテストメソッドでは更新できません。
  • D. @testSetup アノテーションで定義されたメソッドは、テスト クラス内の各テスト メソッドに対して 1 回実行され、システム制限にカウントされます。
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

Question #5

開発者は金融システム用の Apex クラスを実装しています。クラス内では、変数「creditAmount」と「debitAmount」は、値が割り当てられると変更できないようにする必要があります。
開発者が変数を宣言して、その値が 1 回だけ割り当てられるようにするには、どの 2 つの方法がありますか?
2つの回答を選択してください

  • A. final キーワードを使用し、その値をクラス コンストラクターで割り当てます。
  • B. 変数を宣言するときに、final キーワードを使用してその値を割り当てます。
  • C. static キーワードを使用し、その値をクラスコンストラクターで割り当てます。
  • D. static キーワードを使用し、その値を静的初期化子で割り当てます。
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

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