Yes. Exams4sures offers a free PDF demo of the DEX-450日本語 practice questions so you can check the quality, the format, and the difficulty level before you spend anything. After you purchase, you also receive 365 days of free updates, and if the product expires you can extend the update service at a 50% discount from your member zone.

The DEX-450日本語 exam contains 60 questions and gives you 120 minutes to complete them. That works out to a brisk pace, so you cannot afford to stall on a single tricky item — flag it, move on, and circle back if time allows. Before exam day, run at least two timed mock sessions with the Exams4sures desktop or online test engine; practicing against a real clock turns the official time limit into a comfortable rhythm instead of a source of panic.

The DEX-450日本語 exam (full name: Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)) is a Salesforce certification exam that leads to the Salesforce Developer credential, positioned at the Platform Developer I level. It validates the skills Salesforce expects from professionals working with its technologies, and passing it is the key step toward getting certified. It also sits within a broader certification path that includes Platform Developer II (PDII), Salesforce Certified Administrator.

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) exam is organized into 8 domains. The main areas include Apex Testing (13%), Apex Transaction Management (10%), and Apex Classes and Interfaces (12%). Scroll up to the exam syllabus section on this page for the complete topic-by-topic outline.

No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules

Eligibility requirements can change, so before you register, confirm the latest criteria on the official Salesforce exam page.

To pass the DEX-450日本語 exam you need a score of 68%, and the official registration fee is $200 USD. Keep in mind that a failed attempt comes at full price: retaking the exam means paying the entire fee again. A smart way to protect that investment is to self-test first — work through the 202 practice questions at Exams4sures until your timed scores sit comfortably above the passing line before you book a seat.

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If you take the DEX-450日本語 exam within 60 days of your purchase and do not pass, you can apply for a full refund under the Exams4sures money back guarantee. To file a claim, submit a scan of your exam enrollment slip together with the official score report (PDF) within 2 days of taking the exam, and your claim will be processed within 7 days. The candidate name must match the payer name, and the policy does not apply to exams taken within 3 days of purchase, to purchases where the exam was never actually taken, or to free materials and expired orders. Prefer an alternative? Instead of a refund, you can exchange your purchase for two free exam products of equal value while keeping the update service on your original product.