To pass the DEX-450日本語 exam you need 65%–80%, and the official registration fee is $200 USD. Since a failed attempt is not discounted — retaking means paying $200 USD in full again — treat the booking as the last step, not the first. Work through the Lead2Passed practice questions until your timed scores sit comfortably above 65%–80%, and only then lock in your exam date.

The DEX-450日本語 (Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)) is the official Salesforce examination that awards the Salesforce Platform Developer I certification to candidates who pass it. Within the Salesforce program it is classed as a Professional credential. It sits alongside related certifications such as Salesforce Platform Developer II. Because the credential comes straight from the vendor, employers treat it as verified proof of skill — and the 202 practice questions at Lead2Passed follow the same published blueprint.

Registration for the DEX-450日本語 exam runs through the official channels below:

• Salesforce Certification Portal

Depending on availability in your region, the DEX-450日本語 exam is taken Online proctored or onsite testing center.

Our money-back guarantee applies if you sit the corresponding DEX-450日本語 exam within 60 days of purchase and do not pass: submit a scan of your enrollment slip plus the official Score Report PDF within 2 days of the exam, and the claim is settled within 7 days. The registration name must match the buyer's name; attempts within 3 days of purchase, downloads never used in a real sitting, free materials, and expired orders fall outside the policy. If you prefer, you can forgo the refund and instead receive two free exam products of equal value while keeping updates on your original purchase. As for delivery, your files arrive by email within one minute of payment — if 2 hours pass without a message, check spam and contact support — and you can install the product on unlimited computers.

The official Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) blueprint breaks the content into 5 domains, starting with these three:

• Data Modeling and Management (20%)
• Visualforce Development (15%)
• Apex Classes, Triggers, and Execution (20%)

The full domain-by-domain outline is listed above on this page — use it as your checklist while you work through the Lead2Passed practice questions.

On exam day you will have 105–120 to complete 60–85 questions in the DEX-450日本語 exam. Divide your attention deliberately: answer what you know first, mark anything doubtful, and sweep back through flagged items near the end rather than burning minutes on a single question. The best way to defuse time pressure is exposure — schedule at least one full-length timed session in the Lead2Passed test engine so the pacing feels automatic when it counts.

For structured learning, Salesforce recommends these official courses for DEX-450日本語 candidates:

• Build Applications Programmatically on the Salesforce Platform (DEX450)

Courses explain the why; the 202 practice questions at Lead2Passed drill the how-fast. Combining the two is the shortest route most candidates find.

Before you register, review the stated prerequisites: Understanding of declarative development; experience with object-oriented programming; completion of recommended training or equivalent knowledge

For the latest wording, always double-check the official exam page: https://trailhead.salesforce.com/en/credentials/platform-developer-i.

Yes — every Lead2Passed product, including the DEX-450日本語 Q&A, has a free PDF demo you can download before spending anything. Your purchase then stays current with 365 days of free updates, and if the update period lapses you can renew it at 50% off from your member zone.