SALESFORCE-PD1 Practice Test 8 — 10 Questions

Question 1

A developer wants to chain a second asynchronous job from within an executing Queueable Apex job. Which method should be used?

Accepted Answer

System.enqueueJob(). System.enqueueJob is used inside an execute method of a Queueable class to chain another job.

Answer

Database.executeBatch()

Answer

apexJob.schedule()

Answer

Future.runAsync()

Question 2

A developer needs to access a specific HTML element in a Lightning Web Component template imperatively. Which method should be called?

Accepted Answer

this.template.querySelector(). In Lightning Web Components, to access an element in the template imperatively, you must use this.template.querySelector() with a CSS selector. This method scopes the query to the component's template, ensuring encapsulation and preventing access to elements outside the component. It returns the first matching element.

Answer

window.findElement()

Answer

this.findElement()

Answer

document.querySelector()

Question 3

A developer needs to execute a dynamic SOQL query where the object name and fields are determined at runtime. Which method should be used?

Accepted Answer

Database.query(). Database.query() allows execution of dynamically constructed SOQL query strings.

Answer

Record.query()

Answer

System.query()

Answer

SOQL.query()

Question 4

Which governor limit applies to the total CPU time in a single synchronous Apex transaction?

Accepted Answer

10,000 milliseconds. The synchronous CPU time limit is 10,000 milliseconds (10 seconds).

Answer

60,000 milliseconds

Answer

5,000 milliseconds

Answer

120,000 milliseconds

Question 5

A developer needs to display a toast notification in a Lightning Web Component when a record is successfully saved. Which module should the developer import?

Accepted Answer

import { ShowToastEvent } from 'lightning/platformShowToastEvent';. Lightning Toast notifications are triggered by importing ShowToastEvent from 'lightning/platformShowToastEvent'.

Answer

import { Toast } from 'lightning/toast';

Answer

import ShowToast from 'force:showToast';

Answer

import { showNotification } from 'lightning/notificationsLibrary';

Question 6

A developer is implementing a custom pagination mechanism in a Lightning Web Component. The component uses an Apex controller method that returns a list of records. Which technique prevents excessive heap size and improves performance when dealing with large datasets?

Accepted Answer

Use server-side pagination passing page offset and limit parameters to the Apex controller.. Implementing server-side pagination with OFFSET and LIMIT or using standard database query locators in Apex is best practice.

Answer

Fetch all records in a single transaction and slice the array in JavaScript.

Answer

Store the entire dataset in browser local storage for client-side manipulation.

Answer

Use the @wire decorator with an unbounded query and enable auto-caching.

Question 7

Which TWO tools or features should a developer consider when choosing between Flow Builder and Apex for business logic automation? (Choose two.)

Accepted Answer

Apex is better suited for complex algorithmic logic, advanced error handling, and reusable utility classes.. Option A is correct because Apex is the programmatic choice for complex algorithmic logic, advanced error handling (try/catch, custom exceptions, savepoints), and reusable utility classes that can be invoked across triggers, classes, and even Flows via @InvocableMethod. Option B is correct because Flow Builder is declarative, so administrators can build and modify record-triggered, screen, and scheduled flows quickly without code, improving maintainability and reducing dependency on developers. Option C is wrong because Flows can absolutely call subflows and invocable Apex actions. Option D is wrong because Apex triggers are not universally slower than record-triggered flows; performance depends on implementation, and Apex is often faster for bulk and complex operations. Option E is wrong because large nightly asynchronous batch processing is a classic Apex use case (Batch Apex, Queueable, Schedulable), not a Flow Builder requirement.

Answer

Flows cannot trigger subflows or call invocable actions.

Answer

Apex triggers execute significantly slower than record-triggered flows in all scenarios.

Answer

Flow Builder is required when processing millions of records nightly in asynchronous batches.

Question 8

Which THREE practices are considered security best practices when developing custom Visualforce pages to prevent Cross-Site Scripting (XSS)? Choose 3 answers.

Accepted Answer

Use standard Visualforce components like <apex:outputText> which automatically HTML-escape output by default.. Preventing XSS in Visualforce involves escaping output, using standard components which escape by default, and encoding untrusted data.

Answer

Disable sharing on all controller classes.

Answer

Set escape="false" on all output components to ensure proper rendering.

Question 9

Which THREE of the following are benefits of using the Salesforce CLI for deployment?

Accepted Answer

Supports automated deployment scripts. CLI offers automation, version control integration, and environment consistency.

Answer

Allows bypassing validation rules in production

Answer

Automatically converts all code to Lightning Web Components

Question 10

A developer is writing an Apex method and needs to store a collection of unique email addresses while maintaining fast lookup times. Which collection should the developer choose?

Accepted Answer

Set<String>. Sets in Apex store unique elements and provide efficient membership testing methods like contains().

Answer

List<String>

Answer

Queue<String>

Answer

Map<String, Integer>