Salesforce Certified Platform Developer II - Multiple Choice: Plat-Dev-301 Exam

"Salesforce Certified Platform Developer II - Multiple Choice", also known as Plat-Dev-301 exam, is a Salesforce Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 204 Q&As to your Plat-Dev-301 Exam preparation. In the Plat-Dev-301 exam resources, you will cover every field and category in Salesforce Developer Certification helping to ready you for your successful Salesforce Certification.

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  • Exam Code: Plat-Dev-301
  • Exam Name: Salesforce Certified Platform Developer II - Multiple Choice
  • Certification Provider: Salesforce
  • Corresponding Certification: Salesforce Developer
  • Updated: Aug 28, 2026
  • No. of Questions: 204 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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Salesforce Plat-Dev-301 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Advanced Developer Fundamentals15%- Design and maintain scalable, reusable code
- Apply security best practices in development
- Work with localization, multi-currency, and global features
Topic 2: User Interface Development20%- Build complex Lightning Web Components and Aura Components
- Implement advanced Visualforce functionality
- Optimize UI performance and usability
Topic 3: Logic, Process Automation, and Integration27%- Asynchronous Apex: future, queueable, batch, scheduled
- Complex business logic and automation design
- Advanced Apex programming and transaction management
- REST/SOAP API, Platform Events, and external integrations
Topic 4: Performance and Data Management18%- Governor limits optimization and best practices
- Optimize queries and handle large data volumes
- Data modeling and complex data operations
Topic 5: Testing, Debugging, and Deployment20%- Deployment strategies, CI/CD, and change management
- Advanced testing strategies and test frameworks
- Debugging and error handling across layers

Salesforce Certified Platform Developer II - Multiple Choice Sample Questions:

Question 1

Which tag should a developer use to display different text while an <apex:commandButton> is Processing an action?

A. <apex:actionSupparts
B. <apex:actionStatus>
C. <apex:actionPaller>
D. <apex:pageMes sagas


Question 2

Business rules require a Contact ta always be created when a new Account is created.
What can be used when developing a custom screen to ensure an Account is not created if the creation of the Contact fails?

A. Use the Database. Delete method if the Contact insertion fails.
B. Disable validation rules on Contacts and set default values with a trigger.
C. Use setSaverpoint (1) and rollback() with a try-catch block.
D. Use the Database. Insect method with a11orNone SEL LO alee,


Question 3

Consider the following code snippet:

A developer created the following test class to provide the proper code coverage for the snippet above:

However, when the test runs, no data is returned and the assertion fails. Which edit should the developer make to ensure the test class runs successfully?

A. Implement the without sharing keyword in the searchFeaturs Apex class.
B. Implement the seeAllData=true attribute in the @1sTest annotation.
C. Implement the setFixedSearchResult= method in the test class.
D. Enclose the method call within Test. startbest i) and @Test_stopTast |).


Question 4

After a platform event is defined in a Salesforce org,events can be published via which mechanism?

A. External Apps require the standard Streaming API.
B. Internal Apps can use entitlement processes.
C. External Apps use an API Co publish event messages.
D. Internal Apps can use outbound messages.


Question 5

A developer is asked to modify a Lightning web component so that it displays in one column on phones and in two columns on tablets, desktops, and larger devices.
Given to the code below:

Which should the developer add to the code to meet the requirements? A)

B)

C)

D)

A. Option A
B. Option C
C. Option D
D. Option B


Solutions:

Question 1
Answer: B
Question 2
Answer: C
Question 3
Answer: C
Question 4
Answer: C
Question 5
Answer: D

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