Most Recent Salesforce Plat-Dev-201 Exam Dumps

Prepare for the Salesforce Certified Platform Developer exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Salesforce Plat-Dev-201 exam and achieve success.

The questions for Plat-Dev-201 were last updated on Apr 21, 2026.

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Question No. 1

What is the result of the following code snippet?

public word doWork(Account acct) {

for (Integer i = 0; i <= 2007 i++) {

insert acct;

}

AAccounts are inserted.

BAccount is inserted.

C200 Accounts are inserted.

D201 Accounts are inserted.

Show Answer

Correct Answer: D

ThedoWorkmethod inserts an account for every iteration of theforloop, which runs fromi = 0toi <= 200, inclusive.

This results in 201 iterations, and hence 201 accounts are inserted into the org.

Explanation of Code Behavior:

The loop conditioni <= 200runs 201 times (0 to 200).

Theinsert acct;statement is executed 201 times.

Apex Developer Guide - Loop Constructs

Question No. 2

An Apex method, getAccounts, that returns a List of Accounts given a searchTerm, is available for Lightning Web Components to use.

What is the correct definition of a Lightning Web Component property that uses the getAccounts method?

A. @wire(getAccounts, { searchTerm: '$searchTerm' }) B. @track(getAccounts, '$searchTerm') C. @wire(getAccounts, 'searchTerm: $searchTerm') D. @wire(getAccounts, '$searchTerm')

A@wire(getAccounts, { searchTerm: '$searchTerm' })
Syntax: Uses @wire to call getAccounts and passes parameters as an object { searchTerm: '$searchTerm' }.
Parameter Mapping: The searchTerm parameter of the getAccounts Apex method is mapped to the LWC's searchTerm property. The $searchTerm syntax indicates that searchTerm is a reactive property, and getAccounts will be re-invoked if searchTerm changes.
Correctness: This matches the standard LWC syntax for wiring an Apex method with parameters. The Lightning Web Components Developer Guide confirms: ''Pass parameters to an Apex method as a JavaScript object, using the $ prefix for reactive properties'' (Salesforce Lightning Web Components Developer Guide, Call Apex Methods).
Conclusion: Correct, as it uses the proper @wire syntax and parameter format.

B@track(getAccounts, '$searchTerm')
Syntax: Uses @track instead of @wire.
Decorator: The @track decorator is used to make a property reactive, meaning the component re-renders when the property changes, but it does not wire the property to a data source like an Apex method. The Lightning Web Components Developer Guide states: ''@track is used to mark a property as reactive for re-rendering, but it does not fetch data from a server'' (Salesforce Lightning Web Components Developer Guide, Reactive Properties).
Parameter: Passing getAccounts and '$searchTerm' to @track is invalid, as @track does not accept arguments in this manner.
Conclusion: Incorrect, as @track cannot be used to wire an Apex method.

C@wire(getAccounts, 'searchTerm: $searchTerm')
Syntax: Uses @wire to call getAccounts, but the parameters are passed as a string 'searchTerm: $searchTerm'.
Parameter Format: The @wire decorator expects the second argument to be a JavaScript object (e.g., { searchTerm: '$searchTerm' }), not a string. The Lightning Web Components Developer Guide specifies: ''The second argument to @wire for an Apex method must be an object mapping parameter names to values'' (Salesforce Lightning Web Components Developer Guide, Pass Parameters to Apex Methods). Passing a string like 'searchTerm: $searchTerm' results in a runtime error or the Apex method not being called correctly.
Conclusion: Incorrect, as the parameter format is invalid (string instead of an object).

D@wire(getAccounts, '$searchTerm')
Syntax: Uses @wire to call getAccounts, but passes '$searchTerm' directly as a string, not as a parameter object.
Parameter Format: The getAccounts method expects a parameter named searchTerm, so the correct format is { searchTerm: '$searchTerm' }. Passing '$searchTerm' as a single value does not map to the Apex method's parameter name, causing the method to receive no value for searchTerm (or fail entirely). The Lightning Web Components Developer Guide notes: ''Parameter names in the object must match the Apex method's parameter names'' (Salesforce Lightning Web Components Developer Guide, Call Apex Methods).
Conclusion: Incorrect, as the parameter is not passed as a properly formatted object mapping to the Apex method's parameter.
Why Option A is Correct:
Option A is correct because:
It uses the @wire decorator to properly connect the getAccounts Apex method to an LWC property.
It passes the searchTerm parameter in the correct format: { searchTerm: '$searchTerm' }, mapping the Apex method's parameter to the LWC's reactive searchTerm property.
The $searchTerm syntax ensures reactivity, so the getAccounts method is re-invoked when searchTerm changes, aligning with LWC best practices.
This matches the standard syntax outlined in the Salesforce Lightning Web Components Developer Guide for wiring Apex methods with parameters.
Example for Clarity:
Here's how option A would be used in a complete LWC JavaScript file:
javascript
Copy
import { LightningElement, wire } from 'lwc';
import getAccounts from '@salesforce/apex/AccountController.getAccounts';
export default class MyComponent extends LightningElement {
searchTerm = ''; // Reactive property for search term
// Wire the getAccounts Apex method to a property
@wire(getAccounts, { searchTerm: '$searchTerm' })
accounts;
// Example: Update searchTerm based on user input
handleSearchTermChange(event) {
this.searchTerm = event.target.value;
}
}
Apex Controller (for reference):
apex
Copy
public with sharing class AccountController {
@AuraEnabled(cacheable=true)
public static List<Account> getAccounts(String searchTerm) {
return [SELECT Id, Name FROM Account WHERE Name LIKE :('%' + searchTerm + '%')];
}
}
Behavior: When searchTerm changes (e.g., due to user input), the @wire decorator re-invokes getAccounts with the new searchTerm value, and the accounts property receives the result (e.g., { data: [/* Account records */], error: undefined }).
Handling Typos:
The options are syntactically correct in the provided image, with no typos to address. However, the options assume getAccounts is properly imported and defined in the Apex controller, which we infer based on the question's context.
The question's phrasing is clear, and the options align with typical LWC syntax patterns.

Show Answer

Correct Answer: A

The correct syntax for using @wire to connect a Lightning Web Component property to an Apex method requires specifying the method and a configuration object that includes the reactive property prefixed with $. The correct usage is:

javascript

CopyEdit

@wire(getAccounts, { searchTerm: '$searchTerm' })

This correctly wires the reactive searchTerm property to the getAccounts method.

Wire a Property to an Apex Method

To determine the correct definition of a Lightning Web Component (LWC) property that uses the getAccounts Apex method, we need to evaluate the syntax and usage of the @wire decorator in LWC, focusing on how it connects to Apex methods and passes parameters. Let's analyze the problem and each option systematically, referencing Salesforce's official Lightning Web Components Developer Guide.

Understanding the Requirement:

Apex Method: The getAccounts method is an Apex method that returns a List<Account> and takes a parameter searchTerm. For an Apex method to be callable from an LWC, it must be annotated with @AuraEnabled(cacheable=true) (for @wire) and be static. The Lightning Web Components Developer Guide states: ''To call an Apex method from a Lightning Web Component using @wire, the method must be static and annotated with @AuraEnabled(cacheable=true)'' (Salesforce Lightning Web Components Developer Guide, Call Apex Methods).

LWC Property: The question asks for the correct definition of an LWC property that uses @wire to call getAccounts. The @wire decorator is used to wire a property or function to a data source, such as an Apex method, and can pass dynamic parameters.

Parameter Passing: The searchTerm parameter must be passed dynamically to getAccounts, meaning its value comes from a reactive property (e.g., searchTerm) in the LWC. In LWC, reactive properties are tracked for changes, and the $ prefix is used to indicate reactivity in @wire parameters.

LWC @wire Syntax:

The @wire decorator connects a property or function to a data source (e.g., an Apex method). When wiring to an Apex method, the syntax is:

javascript

Copy

@wire(apexMethod, { param1: '$property1', param2: '$property2' })

propertyName;

Apex Method Reference: The apexMethod is the imported Apex method (e.g., getAccounts imported from a controller).

Parameters: The second argument is an object mapping Apex method parameters to LWC properties. The $ prefix makes the property reactive, meaning the wired method re-invokes when the property changes. The Lightning Web Components Developer Guide explains: ''Use the $ prefix in the parameters object to indicate a reactive property, so the wired method is called when the property's value changes'' (Salesforce Lightning Web Components Developer Guide, Pass Parameters to Apex Methods).

Result: The wired property receives an object with data (the Apex method's return value) or error (if an error occurs).

Evaluating the Options:

Salesforce Lightning Web Components Developer Guide:

''Call Apex Methods'' section: Details the use of @wire to call Apex methods, including parameter passing.

''Pass Parameters to Apex Methods'' section: Explains the { param: '$property' } syntax for reactive parameters.

''Reactive Properties'' section: Clarifies the role of @track (and why it's not applicable here). (Available at: https://developer.salesforce.com/docs/component-library/documentation/en/lwc/)

Salesforce Apex Developer Guide:

''AuraEnabled Annotation'' section: Describes requirements for Apex methods to be callable from LWC (@AuraEnabled(cacheable=true)). (Available at: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/)

Platform Developer I Study Guide:

Section on ''User Interface'': Covers building LWCs, including wiring Apex methods and handling reactivity. (Available at: https://trailhead.salesforce.com/en/content/learn/modules/platform-developer-i-certification-study-guide)

Question No. 3

Which statement describes the execution order when triggers are associated to the same object and event?

ATriggers are executed in the order they are modified.

BTrigger execution order cannot be guaranteed.

CTriggers are executed alphabetically by trigger name.

DTriggers are executed in the order they are created.

Show Answer

Correct Answer: B

When multiple triggers are associated with the same object and event, Salesforce does not guarantee the order of execution. This is why it is a best practice to consolidate all logic into a single trigger per object and control execution order using helper classes.

Question No. 4

A lead developer creates a virtual class called "OrderRequest". Consider the following code snippet:

apex

Copy

public class CustomerOrder {

// code implementation

}

How can a developer use the OrderRequest class within the CustomerOrder class?

A. extends (class="OrderRequest")public class CustomerOrder B. public class CustomerOrder implements Order C. public class CustomerOrder extends OrderRequest D. @Implements (class="OrderRequest")public class CustomerOrder

Aextends (class='OrderRequest')public class CustomerOrder
Syntax: This option attempts to use extends followed by (class='OrderRequest') and then public class CustomerOrder.
Analysis: The syntax is incorrect. In Apex, the extends keyword is followed directly by the name of the class to extend, with no parentheses or class= notation. The correct syntax would be public class CustomerOrder extends OrderRequest. The Apex Developer Guide specifies: ''The extends keyword is followed by the name of the parent class, without additional attributes or parentheses'' (Salesforce Apex Developer Guide, Inheritance). The (class='OrderRequest') syntax resembles annotations or markup, but it's not valid in Apex for inheritance.
Conclusion: Incorrect due to invalid syntax.

Bpublic class CustomerOrder implements Order
Syntax: Uses the implements keyword to implement an interface named Order.
Analysis: The implements keyword is used to implement an interface, not to extend a class. The question states that OrderRequest is a virtual class, not an interface, so implements is inappropriate. Additionally, the option references Order, not OrderRequest, which appears to be a mismatch with the class name provided in the question. The Apex Developer Guide clarifies: ''The implements keyword is used for interfaces, while extends is used for classes, including virtual classes'' (Salesforce Apex Developer Guide, Interfaces). Even if Order were intended to be OrderRequest, implements would still be incorrect for a virtual class.
Conclusion: Incorrect, as implements is for interfaces, not virtual classes, and Order does not match OrderRequest.

Cpublic class CustomerOrder extends OrderRequest
Syntax: Declares CustomerOrder as a subclass of OrderRequest using the extends keyword.
Analysis: This is the correct syntax for inheritance in Apex. Since OrderRequest is a virtual class, CustomerOrder can extend it to inherit its methods and properties. The extends keyword allows CustomerOrder to use (inherit) the functionality of OrderRequest. The Apex Developer Guide confirms: ''A class can extend a virtual class using the extends keyword, inheriting its methods and properties'' (Salesforce Apex Developer Guide, Inheritance). This matches the question's intent of ''using'' OrderRequest within CustomerOrder, which typically means inheritance when dealing with a virtual class.
Conclusion: Correct, as it uses the proper extends keyword to inherit from the virtual OrderRequest class.

D@Implements (class='OrderRequest')public class CustomerOrder
Syntax: Uses an @Implements annotation with (class='OrderRequest') before the class declaration.
Analysis: Apex does not have an @Implements annotation. The implements keyword (without @) is used for interfaces, and annotations in Apex (e.g., @AuraEnabled, @TestVisible) do not use this format for inheritance or interface implementation. The Apex Developer Guide does not define @Implements as a valid annotation (Salesforce Apex Developer Guide, Annotations). The correct way to extend a virtual class is with extends, as in option C.
Conclusion: Incorrect due to invalid syntax (@Implements is not a valid Apex annotation).
Why Option C is Correct:
Option C is correct because:
It uses the extends keyword to properly declare CustomerOrder as a subclass of OrderRequest, which is a virtual class.
This allows CustomerOrder to inherit and use the methods and properties defined in OrderRequest, fulfilling the requirement to ''use'' the OrderRequest class within CustomerOrder.
The syntax aligns with Apex best practices for inheritance as outlined in the Salesforce Apex Developer Guide.
Example for Clarity:
Here's how the correct implementation (option C) would look:
apex
Copy
public virtual class OrderRequest {
public String getOrderDetails() {
return 'Order Details';
}
}
public class CustomerOrder extends OrderRequest {
public String getCustomerOrderInfo() {
// Inherit and use OrderRequest's method
String orderDetails = getOrderDetails();
return 'Customer Order: ' + orderDetails;
}
}
CustomerOrder extends OrderRequest, inheriting getOrderDetails().
The developer can use OrderRequest's functionality (e.g., call its methods) within CustomerOrder.
Handling Typos:
The question's code snippet and options are mostly clear, but option B references Order instead of OrderRequest, which appears to be a typo. The analysis assumes the intended class is OrderRequest, as stated in the question stem.
Option D has a typo in the class name: Customerorder should be CustomerOrder (capital O). This does not affect the analysis, as the syntax error (@Implements) is the primary issue.

Show Answer

Correct Answer: C

Comprehensive and Detailed Explanation From Exact Extract: To determine how a developer can use the OrderRequest class within the CustomerOrder class, we need to evaluate the options based on Apex syntax for inheritance, focusing on the fact that OrderRequest is a virtual class. Let's analyze the problem and each option systematically, referencing Salesforce's official Apex Developer Guide.

Understanding Virtual Classes and Inheritance in Apex:

Virtual Class: In Apex, a virtual class allows other classes to extend it and inherit its methods and properties. It can also define methods that can be overridden by subclasses. The Apex Developer Guide states: ''A virtual class can be extended by another class, allowing the subclass to inherit its methods and properties, and override virtual methods if needed'' (Salesforce Apex Developer Guide, Classes).

Inheritance: Apex supports single inheritance using the extends keyword, where a subclass inherits from a single parent class. The Apex Developer Guide notes: ''Use the extends keyword to create a subclass that inherits from a parent class'' (Salesforce Apex Developer Guide, Inheritance).

Virtual vs. Interface:

A virtual class can contain method implementations and is extended using extends.

An interface defines method signatures without implementations and is implemented using implements. The question specifies OrderRequest as a virtual class, not an interface.

Requirement: The CustomerOrder class needs to use OrderRequest, which likely means inheriting its functionality, as OrderRequest is a virtual class.

Evaluating the Options:

Salesforce Apex Developer Guide:

''Classes'' section: Defines virtual classes and their ability to be extended.

''Inheritance'' section: Explains the extends keyword for class inheritance.

''Interfaces'' section: Clarifies the implements keyword for interfaces, distinguishing it from extends.

''Annotations'' section: Confirms that @Implements is not a valid Apex annotation. (Available at: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/)

Platform Developer I Study Guide:

Section on ''Developer Fundamentals'': Covers Apex object-oriented programming concepts, including inheritance and virtual classes. (Available at: https://trailhead.salesforce.com/en/content/learn/modules/platform-developer-i-certification-study-guide)

Question No. 5

A developer writes a trigger on the Account object on the before update event that increments a count field. A record triggered flow also increments the count field every time that an Account is created or updated.

What is the value of the count field if an Account is inserted with an initial value of zero, assuming no other automation logic is implemented on the Account?

Show Answer

Correct Answer: A

When an Account record is created, the following happens:

Before insert triggerincrements the count field once.

After insert record-triggered flowexecutes and increments the count again.

When the record is subsequently updated:

Before update triggerincrements the count again.

After update record-triggered flowincrements it once more.

Thus, the final value of thecountfield =4.

Order of Execution in Salesforce

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