PDI Real Exam Questions
Platform Developer I. Everything you need to prepare, practice, and pass.
224
Questions
5
Exam Domains
Included
Explanations
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Certification Overview
PDI heavily emphasizes Apex programming (triggers, classes, asynchronous patterns) and testing, with substantial coverage of Lightning Web Components for modern UI development. You'll need solid understanding of Salesforce data modeling, process automation (flows, workflows), and debugging—the difficulty rating of 2.3/5 reflects that this is approachable but requires practical coding knowledge, not just configuration skills.
What This Certification Proves
The Platform Developer I (PDI) certification validates your ability to develop custom solutions on the Salesforce platform using Apex, Lightning Web Components, and Visualforce. This entry-level developer credential demonstrates you can build, test, and deploy functional applications within Salesforce's ecosystem—a critical skill for any Salesforce developer role.
Who Should Take This Exam
Developers with foundational Salesforce knowledge (typically 3-6 months hands-on experience) who want to formalize their platform development skills. Ideal for career-starters transitioning into Salesforce development, experienced developers new to Salesforce, or those preparing for advanced certifications like Platform Developer II.
Topic Breakdown
5 domains covering 224 questions
| Domain | Questions | Weight |
|---|---|---|
| Logic And Process Automation | 94 | 42% |
| Testing, Debugging, And Deployment | 48 | 21% |
| User Interface | 48 | 21% |
| Data Modeling And Management | 30 | 13% |
| Salesforce Fundamentals | 4 | 2% |
Study Plans
Choose a study plan that matches your schedule and experience level
30 Days
Intensive Sprint
Week 1-2
- Master fundamentals: Logic And Process Automation
- Read Salesforce official documentation
- Complete 8 questions daily
Week 3
- Deep dive: Testing, Debugging, And Deployment
- Review weak areas from results
- Take 2 full-length exams
Week 4
- Review all flagged questions
- Timed exams to build stamina
- Final revision of key concepts
60 Days
Balanced Approach
Week 1-2
- Survey all exam domains
- Set up study environment
- Begin with foundational topics
Week 3-4
- Focus: Logic And Process Automation
- Focus: Testing, Debugging, And Deployment
- 4 questions daily
Week 5-6
- Focus: User Interface
- Hands-on labs if applicable
- Review explanations for wrong answers
Week 7-8
- Complete all 224 questions
- Identify and eliminate weak areas
- Take 3 full-length timed tests
90 Days
Comprehensive Study
Month 1
- Learn all exam domains at a comfortable pace
- Build strong foundational knowledge
- 3 questions daily
Month 2
- Deep dive into each domain
- Hands-on practice and labs
- Take weekly timed exams
Month 3
- Work through all 224 questions
- Identify and eliminate weak areas
- Take 3 full-length timed exams
PDI-Specific Tips
- Build Apex hands-on: Don't just read about triggers and classes—write them in a sandbox. The exam tests application of Apex concepts, not just memorization.
- Master Governor Limits deeply: With topics like Asynchronous Apex and governor limits tested heavily, understand why batch processing, queueable, and scheduled jobs exist and when to use each.
- Practice with Lightning Web Components: LWC is a major focus area. Create several components from scratch, understand lifecycle hooks, wire decorators, and data binding patterns.
- Apex Testing is non-negotiable: Write tests for every scenario. Understand test data setup, assertions, mock objects, and why test classes must have 75%+ code coverage before deployment.
- Use the Trailhead modules in order: Salesforce's official Platform Developer I learning path is structured specifically for this exam—follow it sequentially rather than jumping topics.
- Review your code with the Apex style guide: The exam tests best practices. Know naming conventions, proper error handling, and why governor limits matter for scalability.
- Take timed practice exams: With 226 questions available, use them strategically. Time yourself (roughly 3-4 minutes per question) to build exam stamina and identify weak areas.
Relevant Career Roles
Sample Questions
Try 5 free questions from the PDI question bank
A developer created a trigger on a custom object. This custom object also has some dependent pick lists. According to the order of execution rules, which step happens first?
A software company uses the following objects and relationships: - Case: to handle customer support issues - Defect_c: a custom object to represent known issues with the company's software - case_Defect__c: a junction object between Case and Defector to represent that a defect Is a customer issue What should be done to share a specific Case-Defect_c record with a user?
Universal Containers stores the availability date on each Line Item of an Order and Orders are only shipped when all of the Line Items are available. Which method should be used to calculate the estimated ship date for an Order?
The sales management team at Universal Container requires that the Lead Source field of the Lead record be populated when a.. converted. What should be done to ensure that a user populates the Lead Source field prior to converting a Lead?
Considering the following code snippet: When the code executes a DML exception is thrown. How should the developer modify the code to ensure exceptions are handled gracefully?
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