PDI sample questions

Question 1

A developer is building a custom Aura component that needs to display a list of related `Case` records on an `Account` record page. To optimize performance, the developer wants to fetch the data from the server only when the component is first rendered. Where should the developer place the call to the Apex controller method to fetch the case data?

Accepted Answer

In the component's helper file, invoked by a `doInit` handler in the component's controller.

Answer

In the component's renderer file, within the `render` function.

Answer

In the component's markup directly using a Visualforce-style expression like `{!c.fetchCases}`.

Answer

In the Apex controller's constructor method.

Question 2

A developer uses the Developer Console to execute a SOQL query. The query returns 50,001 rows from the Account object. What will be the outcome?

Accepted Answer

The query will fail to execute and throw a `System.LimitException`.

Answer

The query will execute successfully, and all 50,001 rows will be displayed in the Query Results grid.

Answer

The query will execute, but only the first 50,000 rows will be returned without an error.

Answer

The query will execute, but the Developer Console will only display the first 2,000 rows due to UI limitations.

Question 3

True or False: Using the `with sharing` keyword on an Apex class guarantees that a user can only see records they have explicit access to via sharing rules, regardless of their object-level permissions.

Accepted Answer

False

Answer

True

Question 4

A developer needs to write a SOQL query to retrieve `Account` records along with all of their related `Contact` records. The query should be executed within an Apex class. What is the correct syntax for this parent-to-child query?

Accepted Answer

[SELECT Id, Name, (SELECT Id, Name FROM Contacts) FROM Account]

Answer

[SELECT Id, Name, (SELECT Id, Name FROM Contact) FROM Account]

Answer

[SELECT Id, Name, Contact.Name FROM Account]

Answer

[SELECT Account.Name, (SELECT Contact.Name FROM Contacts) FROM Account]

Question 5

A retail company uses a custom `Shipment__c` object that has a Master-Detail relationship with the standard `Account` object. A developer needs to create a field on the `Account` object that displays the date of the most recent `Shipment__c` record. What is the most efficient way to implement this without writing any Apex code?

Accepted Answer

Create a Roll-Up Summary Field on Account with the `MAX` type on the Shipment's creation date field.

Answer

Create a record-triggered Flow on the Shipment object that updates a date field on the parent Account.

Answer

Create a formula field on the Account object to query the most recent Shipment date.

Answer

Create a Process Builder on the Shipment object that invokes an Apex class to update the Account.

Question 6

A developer is writing an Apex trigger on the `Case` object. The trigger needs to execute different logic based on whether the record was created from the UI or through a data load via the API. Which Apex method can be used within the trigger to determine the execution context?

Accepted Answer

`System.Request.getCurrent().getQuiddity()`

Answer

`System.isApi()`

Answer

`System.isBatch()`

Answer

`UserInfo.getUiTheme()`

Question 7

A consultant is deploying a change set from a Developer Sandbox to a Full Sandbox for user acceptance testing (UAT). The change set contains Apex classes, triggers, and a custom object. The deployment fails due to test failures. Upon investigation, the developer finds that the failing tests rely on specific Account and Contact records that exist in the Developer Sandbox but not in the Full Sandbox. What is the best practice for resolving this issue?

Accepted Answer

Refactor the test classes to create their own required Account and Contact records within `@testSetup` methods.

Answer

Modify the test classes to use `(SeeAllData=true)` to allow access to the Full Sandbox's existing data.

Answer

Use Data Loader to export the required records from the Developer Sandbox and import them into the Full Sandbox before deployment.

Answer

Use the `Test.loadData()` method with a static resource containing the necessary records.

Question 8

A developer needs to create a custom user interface that allows sales reps to quickly create a new Opportunity and its related Opportunity Contact Roles on a single screen. The solution must be available within the Salesforce mobile app. Which technology provides the most modern, responsive, and performant solution for this requirement?

Accepted Answer

A Lightning Web Component (LWC).

Answer

A Visualforce page with a custom controller.

Answer

A Screen Flow embedded in a Lightning App Page.

Answer

An Aura Component.

Question 9

An organization has a business rule that an Account's `BillingCountry` must be 'USA' if its `Industry` is 'Government'. Which is the simplest and most efficient tool to enforce this data integrity rule?

Accepted Answer

A Validation Rule

Answer

An Apex trigger

Answer

A record-triggered Flow

Answer

A Workflow Rule

Question 10

A developer has the following Apex code snippet intended to update the description of 250 accounts:

List accountsToUpdate = [SELECT Id FROM Account LIMIT 250];
for (Account acc : accountsToUpdate) {
Account updatedAcc = [SELECT Id, Description FROM Account WHERE Id = :acc.Id];
updatedAcc.Description = 'Updated by Apex';
update updatedAcc;
}

What are the primary issues with this code? (Select TWO)

Accepted Answer

It performs a SOQL query inside a `for` loop.

Accepted Answer

It performs a DML statement inside a `for` loop.

Answer

The code uses a hardcoded limit of 250.

Answer

The variable `updatedAcc` is declared inside the loop.

PDI Sample Questions & Answers

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PDI Sample Questions & Answers

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