Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
Which two actions may cause triggers to fire?
Choose 2 answers
B . Updates to FeedItem:
Triggers can fire when FeedItem records are updated, such as posts on records or Chatter updates.
C . Cascading delete operations:
When a parent record is deleted, cascading delete operations on related child records can trigger child object triggers.
Why Not Other Options?
A: Changing a user's default division does not fire triggers.
D: Renaming or replacing a picklist entry does not fire triggers.
A developer wants to improve runtime performance of Apex calls by caching results on the client.
What is the most efficient way to implement this and follow best practices?
Comprehensive and Detailed Explanation From Exact Extract:
In Lightning Web Components, to cache the results of Apex methods on the client side, the Apex method should be annotated with @AuraEnabled(cacheable=true). This enables the Lightning Data Service to cache the method's response, improving performance by reducing server calls.
Lightning Web Components Developer Guide: Cacheable Apex Methods
How is a controller and extension specified for a custom object named "Notice" on a Visualforce page?
In Visualforce, to specify a standard controller for a custom object, the syntax iscontroller='ObjectName__c'.
To add custom functionality, you can use anextensionsattribute to include a controller extension.
Why not other options?
A: The correct syntax iscontroller, notstandardController, for custom objects.
BandC: These are syntactically incorrect.
:
Visualforce Pages Documentation
A credit card company needs to implement the functionality for a service agent to process damaged or stolen credit cards. When the customers call in, the service
agent must gather many pieces of information. A developer is tasked to implement this functionality.
What should the developer use to satisfy this requirement in the most efficient manner?
Option A: A screen-based flow is ideal for gathering multiple pieces of information from the user interactively. It provides a declarative way to guide the service agent through the process step-by-step.
Not Suitable:
Option B: An approval process is for routing records for approval, not for gathering user input.
Option C: Apex triggers are for automation, not for interactive user input.
Option D: A Lightning Component could work but requires custom development, which is less efficient than using flows.
:Flows Overview
Universal Containers has implemented an order management application. Each Order can have one or more Order Line items. The Order Line object is related to the Order via a master-detail relationship. For each Order Line item, the total price is calculated by multiplying the Order Line item price with the quantity ordered.
What is the best practice to get the sum of all Order Line item totals on the Order record?
A roll-up summary field is the best practice for aggregating values (e.g., sum, count, or average) from child records in a master-detail relationship. This feature automatically calculates the sum of all Order Line item totals and displays it on the parent Order record.
In terms of the MVC paradigm, what are two advantages of implementing the view layer of a Salesforce application using Lightning Web Component-based development over Visualforce?
Choose 2 answers
Advantages of Lightning Web Components (LWC):
A . Rich component ecosystem:
LWCs have a modern, rich component library designed for modular and reusable development.
D . Self-contained and reusable units:
LWCs are designed to be modular, reusable, and self-contained, reducing duplication and enhancing maintainability.
Why Not Other Options?
B . Log capturing via Debug Logs Setup page: This is unrelated to LWC and is a debugging feature.
C . Built-in standard and custom set controllers: Relevant to Visualforce, not LWCs.
A developer needs to prevent the creation of Request__c records when certain conditions exist in the system. A RequestLogic class exists that checks the conditions.
What is the correct implementation?
Comprehensive and Detailed Explanation From Exact Extract: When preventing the creation of records using business logic in an Apex trigger, it's crucial to do it in a before insert trigger context so the records are not committed to the database. The method should be called using trigger.new (case-sensitive) which references the list of new records being inserted.
Triggers and Order of Execution
Apex Trigger Context Variables
Exam domains verified against: Official Salesforce Plat-Dev-201 exam guide, last checked October 2026.
Understand multi-tenant concepts and design frameworks such as MVC architecture and Lightning Component Framework. Learn to identify common use cases and best practices for choosing between declarative and programmatic customizations, including how to work with governor limits, formula fields, and roll-up summaries.
Master declarative process automation features and Apex language fundamentals including variables, constants, methods, and interfaces. Write and optimize SOSL, SOQL, and DML statements while understanding governor limits, transaction execution, exception handling, and best practices for triggers and classes.
Prevent security vulnerabilities in user interfaces and data access controls. Build custom UI components using Lightning Web Components, Flow, and Visualforce, and implement Apex to work effectively with various page components including Lightning components, Flow, and Agentforce.
Write and execute comprehensive tests for triggers, controllers, classes, and flows using various test data sources. Use Salesforce Developer tools like Salesforce DX, Salesforce CLI, and Developer Console, then approach debugging and deployment with knowledge of environments, requirements, and processes.
Common questions about the exam itself
