Salesforce Plat-Dev-201 Exam Questions Instant Access

Question 1

How does the Lightning Component framework help developers implement solutions faster?

ABy providing device-awareness for mobile and desktops

BBy providing an Agile process with default steps

CBy providing change history and version control

DBy providing code review standards and processes

Answer : A

The Lightning Component Framework simplifies development by providing built-in device awareness, enabling components to adapt automatically for different devices such as mobile phones, tablets, and desktops.

Incorrect Options:

B:Agile processes are not part of the Lightning framework itself.

C & D:These are not features provided by the Lightning framework.

Question 2

The following code snippet is executed by a Lightning web component in an environment with more than 2,000 lead records:

Which governor limit will likely be exceeded within the Apex transaction?

ATotal number of SOOL quires issued

BTotal number of DML statements issued

CTotal number of records processed as a result of DML statements

Answer : C

The provided code attempts to update allLeadrecords in an environment with more than 2,000 records. This will likely exceed the governor limit for the total number of records processed in DML statements, which is 10,000 per transaction. To avoid this, the developer can useDatabase.updatewith batching logic.

Question 3

A developer creates a batch Apex job to update a large number of records, and receives reports of the job timing out and not completing.

What is the first step towards troubleshooting the issue?

ACheck the asynchronous job monitoring page to view the job status and logs.

BCheck the debug logs for the batch job.

CDisable the batch job and recreate it with a smaller number of records.

DDecrease the batch size to reduce the load on the system.

Answer : A

When troubleshooting batch Apex jobs:

Asynchronous Job Monitoring:

Navigate toSetup > Apex Jobsto view the status of the batch job.

Provides information such as success, errors, and total execution time.

This step is crucial to diagnose whether the issue is with system limits, batch size, or specific records.

Debug Logs:

After identifying the issue in the job monitoring page, use debug logs to pinpoint specific errors or bottlenecks.

B . Check the debug logs for the batch job: Debug logs are a secondary step after checking the job status.

C . Disable and recreate with fewer records: Premature without investigating the root cause.

D . Decrease the batch size: Adjusting batch size is a solution but only after identifying the cause of the timeout.

Debugging Apex:https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_debugging.htm

Question 4

Which two are best practices when it comes to Aura component and application event handling?

Choose 2 answers

ATry to use application events as opposed to component events.

BReuse the event logic in a component bundle, by putting the logic in the helper.

CUse component events to communicate actions that should be handled at the application level.

DHandle low-level events in the event handler and re-fire them as higher-level events.

Answer : B, D

Option B: Reusing event logic in the helper ensures cleaner and reusable code.

Option D: Handling low-level events in handlers and re-firing them as higher-level events allows for better abstraction and modularity.

:Aura Event Handling Documentation

Question 5

Which three code lines are required to create a Lightning component on a Visualforce page?

Choose 3 answers.

A$Lightning.use

B$Lightning.useComponent

E$Lightning.createComponent

Answer : A, C, E

Comprehensive and Detailed Explanation From Exact Extract:

To embed a Lightning component in a Visualforce page, you need to:

Include the Lightning framework using .

Use $Lightning.use to load Lightning components and resources.

Use $Lightning.createComponent to render the component dynamically in the Visualforce page.

Lightning Components for Visualforce Developer Guide

Question 6

A custom picklist field, Pool Preference , exists on a custom object. The picklist contains the following options: 'Vegan', 'Kosher', 'No Preference'. The developer must ensure a value is populated every time a record is created or updated.

What is the optimal way to ensure a value is selected every time a record is saved?

ASet 'Use the first value in the list as the default value' to True.

BWrite an Apex trigger to ensure a value is selected,

CMark the field as Required on the object's page layout.

DMark the field as Required on the field definition.

Answer : D

Marking the field as required on the field definition ensures that the field is always populated during record creation or update. This enforces the rule at the database level.

Other Options:

Option A: Setting a default value ensures a value is present initially but does not enforce a value during updates.

Option B: Writing a trigger is less efficient and adds unnecessary complexity.

Option C: Marking the field as required on the page layout is UI-specific and does not enforce the rule during API or code-based operations.

:Field Level Requirements

Question 7

While developing an Apex class with custom search functionality that will be launched from a Lightning Web Component, how can the developer ensure only records accessible to the currently logged in user are displayed?

AUse the WITH SECURITY_ENFORCED clause within the SOQL.

BUse the inherited sharing keyword.

CUse the with sharing keyword.

DUse the without sharing keyword.

Answer : A

WhyWITH SECURITY_ENFORCED?

Ensures field-level security and sharing rules are enforced in SOQL queries.

Prevents unauthorized records or fields from being accessed or displayed.

Why Not Other Options?

B and C:with sharingandinherited sharingenforce record-level access but do not handle field-level security.

D:without sharingignores sharing rules, which would display all records regardless of user permissions.

Salesforce Certified Platform Developer Plat-Dev-201 Exam Questions