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

A developer is creating a Lightning web component to show a list of sales records.

The Sales Representative user should be able to see the commission field on each record. The Sales Assistant user should be able to see all fields on the record except the commission field.

How should this be enforced so that the component works for both users without showing any errors?

AUse WITH SECURITY_ENFORCED In the SOQL that fetches the data for the component,

BUse Security.stripInaccessible Le to remove fields inaccessible to the current user.

CUse Lightning Locker Service to enforce sharing rules and field-level security.

DUse Lightning Data Service to get the collection of sales records.

Answer : B

UsingSecurity.stripInaccessibleensures compliance with field-level security (FLS) and prevents users from accessing fields they do not have permission to view. In this scenario:

The commission field is inaccessible to Sales Assistants, andSecurity.stripInaccessiblewill automatically remove this field from the result set.

It prevents runtime errors when a user without proper access attempts to retrieve restricted fields.

Question 3

What are two ways for a developer to execute tests in an org?

Choose 2 answers

ATooling API

BMetadata API

CBulk API

DDeveloper Console

Answer : A, D

Tooling API:

The Tooling API provides programmatic access to manage tests and other metadata in the org.

It can execute test classes or methods remotely.

Developer Console:

The Developer Console is a built-in Salesforce tool to execute Apex tests, debug logs, and more.

Allows developers to execute tests interactively.

B . Metadata API: Used for managing metadata, not for running tests.

C . Bulk API: Used for data operations, not related to testing.

Testing with Developer Console:https://help.salesforce.com/s/articleView?id=sf.code_dev_console_test.htm

Question 4

A developer needs to have records with specific field values in order to test a new Apex class.

What should the developer do to ensure the data is available to the test?

AUse SOQL to query the org for the required data.

BUse Test.loadData() and reference a CSV file in a static resource.

CUse Anonymous Apex to create the required data.

DUse Test. loadData() and reference a JSON file in Documents.

Answer : B

WhyTest.loadData()?

Simplifies test data creation by loading data from a CSV file stored as a static resource.

Ideal for testing specific field values in bulk.

Why Not Other Options?

A: Querying data from the org violates test isolation principles.

C: Anonymous Apex cannot be used within test classes.

D: JSON files in Documents are not supported byTest.loadData().

Question 5

A developer wants to mark each Account in a List as either Active or Inactive, based on the value in the LastModified each Account being greater than 90 days in the past.

Which Apex technique should the developer use?

AAn if-else statement, with a for loop inside

BA witch statement, with a for loop inside

CA for loop, with an if or if/else statement inside

DA for loop, with a switch statement inside

Answer : C

Using aforloop allows iterating through the list, and aniforif-elsecondition inside can evaluate theLastModifiedDatefor each account to determine its status.

:Apex Control Statements

Question 6

Universal Containers is building a recruiting app with an Applicant object that stores information about an individual person and a Job

object that represents a job. Each applicant may apply for more than one job.

What should a developer implement to represent that an applicant has applied for a job?

AJunction object between Applicant and Job

BLookup field from Applicant to Job

CMaster-detail field from Applicant to Job

DFormula field on Applicant that references Job

Answer : A

A . Junction object between Applicant and Job:

Since anApplicantcan apply for multipleJobsand eachJobcan have multipleApplicants, this is amany-to-many relationship.

Salesforce requires ajunction objectto represent many-to-many relationships. The junction object will have two master-detail relationships: one to the Applicant object and one to the Job object.

The junction object could be named something like JobApplication__c, which would represent the specific instance of an applicant applying for a particular job.

Why this is the correct approach?

A junction object allows for robust data management and reporting capabilities in a many-to-many relationship.

This design ensures that each combination of applicant and job is captured as a unique record in the JobApplication__c junction object.

It also allows storing additional details about the application, such as application date, status, and feedback.

Why not the other options?

B . Lookup field from Applicant to Job:

A lookup field creates a one-to-many relationship. While an Applicant could reference one Job, it does not support the many-to-many relationship required in this scenario.

C . Master-detail field from Applicant to Job:

A master-detail relationship is a one-to-many relationship, which is unsuitable for a many-to-many relationship. Additionally, you cannot have two master-detail fields on a single object to connect Applicant and Job directly.

D . Formula field on Applicant that references Job:

A formula field cannot establish relationships between records or represent a many-to-many relationship. It is only for computed fields.

Creating Many-to-Many Relationships with Junction Objects

Master-Detail and Lookup Relationship Details

Question 7

Refer to the following Apex code:

apex

Copy

Integer x = 0;

do {

x++;

} while (x < 1);

System.debug(x);

What is the value of x when it is written to the debug log?

A. 0 B. 2 C. 1 D. 3

A0: Incorrect. The initial value of x is 0, but the do-while loop increments x to 1 in the first iteration, and the loop exits because the condition x < 1 is false. The debug log shows the final value of x, which is 1.

B2: Incorrect. The loop only runs once because after the first iteration, x becomes 1, and the condition x < 1 fails (1 < 1 is false). There is no second iteration to increment x to 2.

C1: Correct. As calculated, the loop executes once, incrementing x from 0 to 1, and then exits because the condition x < 1 is false. The debug log outputs x = 1.

D3: Incorrect. The loop does not run enough times to increment x to 3. It only runs once, setting x to 1.
Why Option C is Correct:
Option C (1) is correct because:
The do-while loop executes the body (x++) exactly once, incrementing x from 0 to 1.
The condition x < 1 evaluates to false when x = 1, causing the loop to exit after the first iteration.
The System.debug(x) statement outputs the final value of x, which is 1.
This behavior aligns with Apex loop semantics as defined in the Salesforce Apex Developer Guide.
Handling Typos:
The code in the image contains a typo: ''salesforce'' is randomly inserted in the middle of the do-while loop. This appears to be an artifact of the image and not part of the intended code. For analysis, we ignore this text and treat the code as:
apex
Copy
Integer x = 0;
do {
x++;
} while (x < 1);
System.debug(x);
There are no other syntactic issues in the code that affect the execution or outcome.
Example for Clarity:
To illustrate, here's how the code executes:
Integer x = 0; // x is 0
do {
x++; // First iteration: x becomes 1
} while (x < 1); // Condition: 1 < 1 false, exit loop
System.debug(x); // Outputs: 1
If this code were run in a Salesforce org, the debug log would show:
DEBUG|1

Answer : C

Comprehensive and Detailed Explanation From Exact Extract: To determine the value of x when it is written to the debug log, we need to analyze the Apex code step by step, focusing on the behavior of the do-while loop and how it affects the variable x. Let's break down the code execution systematically, referencing Salesforce's official Apex Developer Guide.

Code Analysis:

The given Apex code is:

apex

Copy

Integer x = 0;

do {

x++;

} while (x < 1);

System.debug(x);

Step 1: Initial State

Integer x = 0;: The variable x is initialized to 0. The Apex Developer Guide states: ''An Integer in Apex is a 32-bit number that does not include decimal points, initialized to 0 by default if no value is provided'' (Salesforce Apex Developer Guide, Primitive Data Types). Here, x is explicitly set to 0.

Step 2: Understanding the do-while Loop

A do-while loop in Apex executes the loop body at least once before evaluating the condition. The Apex Developer Guide explains: ''The do-while loop executes the block of code in the do statement first, then checks the condition in the while statement. If the condition is true, the loop continues; otherwise, it exits'' (Salesforce Apex Developer Guide, Loops).

The loop body is:

apex

Copy

x++;

This increments x by 1 using the post-increment operator (++). The Apex Developer Guide confirms: ''The ++ operator increments the value of the variable by 1'' (Salesforce Apex Developer Guide, Expressions and Operators).

The condition is:

apex

Copy

while (x < 1);

The loop continues as long as x < 1 evaluates to true.

Step 3: Loop Execution

First Iteration:

Initial value: x = 0.

Execute the loop body: x++ x becomes 1 (0 + 1).

Evaluate the condition: x < 1 1 < 1 false (since 1 is not less than 1).

Since the condition is false, the loop exits after the first iteration.

After the Loop:

The value of x is now 1.

The do-while loop guarantees at least one execution, which is why x is incremented once before the condition check fails.

Step 4: Debug Statement

System.debug(x);: This writes the value of x to the debug log. At this point, x = 1. The Apex Developer Guide states: ''System.debug outputs the value of the specified variable to the debug log for troubleshooting'' (Salesforce Apex Developer Guide, System Class).

Therefore, the debug log will show 1.

Evaluating the Options:

Salesforce Apex Developer Guide:

''Primitive Data Types'' section: Defines the Integer type and its initialization.

''Loops'' section: Explains the do-while loop's behavior, including guaranteed first execution.

''Expressions and Operators'' section: Details the ++ increment operator.

''System Class'' section: Describes System.debug for logging variable values. (Available at: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/)

Platform Developer I Study Guide:

Section on ''Developer Fundamentals'': Covers Apex basics, including variables, loops, and debugging techniques. (Available at: https://trailhead.salesforce.com/en/content/learn/modules/platform-developer-i-certification-study-guide)

Salesforce Certified Platform Developer Plat-Dev-201 Exam Questions