PDI Exam Preparation Material | Platform Developer I

Prepare for the PDI with reliable study materials, practice questions, and key exam insights.

Prepare for the PDI Platform Developer I exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

A developer wants to mark each Account in a List<Account> as either or Inactive based on the LastModified field value being more than 90 days.
Which Apex technique should the developer use?

A. A for loop, with a switch statement inside

B. A Switch statement, with a for loop inside

C. An If/else statement, with a for loop inside

D. A for loop, with an if/else statement inside

Question#2

Universal Containers needs to create a custom user interface component that allows users to enter information about their accounts.
The component should be able to validate the user input before saving the information to the database.
What is the best technology to create this component?

A. Flow

B. Lightning Web Components

C. Visualforce

D. VUE JavaScript framework

Question#3

What are two ways a developer can get the status of an enquered job for a class that queueable interface? Choose 2 answers

A. View the apex status Page

B. View the apex flex Queue

C. View the apex Jobs page

D. Query the AsyncApexJobe object

Question#4

A development team wants to use a deployment script lo automatically deploy lo a sandbox during their development cycles.
Which two tools can they use to run a script that deploys to a sandbox? Choose 2 answers
A.VS Code
B. SFDX CLI
C. Change Sets
D. Developer Console

A. A, B

Question#5

A developer created a trigger on the Account object and wants to test if the trigger is properly bulklfield. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code? Choose 2 answers

A. Use the @isTest(isParallel=true) annotation in the test class.

B. Use Test.loadData to populate data in your test methods.

C. Use the @isTest(seeAllData=true) annotation in the test class.

D. Create a static resource containing test data.

Exam Code: PDI
Q & A: 237 Q&As Updated: Oct 07,2026

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What This PDI Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current PDI exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This PDI Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the PDI exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

Independent PDI Preparation Resource

CertQueen independently develops its certification study materials for educational purposes. The practice questions are not copied from, recalled from, or presented as live or official exam questions.

CertQueen is not affiliated with, endorsed by, sponsored by, or authorized by any certification provider. Certification names, exam codes, product names, and related trademarks are the property of their respective owners and are referenced only for identification and educational purposes.

Exam Code: PDI
Q & A: 237 Q&As
Updated: Oct 07,2026

Access Complete PDI Preparation Material