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These Salesforce Plat-Dev-301 Exam questions help you practice theoretical and practical skills in different aspects, making problem-solving easier. Our Salesforce Plat-Dev-301 questions PDF is a complete bundle of problems presenting the versatility and correlativity of questions observed in past exam papers. These questions are bundled into Salesforce Plat-Dev-301 PDF Questions following the official study guide.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Logic, Process Automation, and Integration | 27% | - Complex business logic and automation design - REST/SOAP API, Platform Events, and external integrations - Asynchronous Apex: future, queueable, batch, scheduled - Advanced Apex programming and transaction management |
| Topic 2: User Interface Development | 20% | - Build complex Lightning Web Components and Aura Components - Implement advanced Visualforce functionality - Optimize UI performance and usability |
| Topic 3: Performance and Data Management | 18% | - Governor limits optimization and best practices - Optimize queries and handle large data volumes - Data modeling and complex data operations |
| Topic 4: Advanced Developer Fundamentals | 15% | - Work with localization, multi-currency, and global features - Design and maintain scalable, reusable code - Apply security best practices in development |
| Topic 5: Testing, Debugging, and Deployment | 20% | - Deployment strategies, CI/CD, and change management - Advanced testing strategies and test frameworks - Debugging and error handling across layers |
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NEW QUESTION # 99
A company uses Dpportunities to track sales to their customers and their org has millions of Opportunities. They want to begin to track revenue over time through a related Revenue object.
As part of their initial implementation, they want to perform a one-time seeding of their data by automatically creating and populating Revenue records for Opportunities, based on complex logic.
They estimate that roughly 100,000 Opportunities will have Revenue records created and populated.
What is the optimal way to automate this?
Answer: A
Explanation:
For a one-time bulk operation on a large data set, using a Database.Batchable class is the best approach. This allows complex logic to be processed in manageable chunks and efficiently manages system resources.
NEW QUESTION # 100
A developer needs to store variables to control the style and behavior of a Lightning Web Component.
Which feature can be used to ensure that the variables are testable in both Production and all Sandboxes?
Answer: C
Explanation:
Custom metadata types are the best feature for storing variables that control style and behavior of a Lightning Web Component. Unlike custom settings, custom metadata is deployable and testable in both Production and all Sandboxes.
NEW QUESTION # 101
A developer has working business logic code, but sees the following error in the test class:
You have uncommitted work pending. Please commit or rollback before calling out.
What is a possible solution?
Answer: B
Explanation:
The error "You have uncommitted work pending. Please commit or rollback before calling out" usually indicates that DML operations (like insert, update, delete) are being performed before a callout in a test context. This is not allowed because Salesforce does not support this sequence of operations in a single transaction. However, the use of seeAllData=true is generally not a recommended practice and does not address the core issue of mixed DML and callouts in tests. The correct solution is to use a mocking framework to simulate the callout response. By using Test.setMock(), developers can avoid performing actual callouts in test methods, thus bypassing the uncommitted work error.
Apex Developer Guide - Testing HTTP Callouts
Apex Developer Guide - Isolation of Test Data from Organization Data in Unit Tests
NEW QUESTION # 102
Given the following containment hierarchy:
What is the correct way to communicate the new value of a property named ''passthrough'' to my-parent-component if the property is defined within my-child-component?
A)
B)
C)
D)
Answer: B
Explanation:
To communicate a property change up a containment hierarchy in Lightning Web Components (LWC), the child component should dispatch a custom event with the detail of the change. The parent component listens for this event and handles it accordingly.
Option A is the correct method because it creates a new custom event with the detail property containing the new value of passthrough. This event is then dispatched, and the parent component can listen for this event to handle the updated value.
Options B, C, and D are incorrect because they either don't pass any data with the event or they don't use the detail object which is the standard way to pass data with custom events in LWC.
Lightning Web Components Developer Guide - Communicating with Events
NEW QUESTION # 103
Salesforce users consistently receive a "Maximum trigger depth exceeded" error when saving an Account. How can a developer fix this error?
Answer: C
Explanation:
A common solution to the "Maximum trigger depth exceeded" error is to use a static variable in a helper class. The variable acts as a switch to ensure the trigger logic only executes once per transaction, preventing recursive trigger calls.
NEW QUESTION # 104
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