SALESFORCE-PD1 Practice Test 15 — 15 Questions

Question 1

A developer has a trigger that updates parent Account records when Child Contacts are modified. To prevent infinite recursion, the developer uses a static boolean variable in a helper class. What is a key limitation of using static variables for recursion control in Salesforce?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Static variables reset at the end of each transaction, and do not protect against separate transactions or certain bulk test setups.. Static variables persist only for the duration of a single transaction; if a secondary transaction or test context restarts, the static variable resets.

Answer

Static variables persist across multiple user transactions, causing triggers to never fire again.

Answer

Static variables cause governor limit exceptions on heap size.

Answer

Static variables are prohibited in trigger helper classes.

Question 2

Which method is used in an Apex trigger to display a custom error message on a specific record during a before insert event?

Accepted Answer

addError(). The addError() method on an sObject instance prevents the DML operation and displays an error message.

Answer

throw new TriggerException()

Answer

ApexPages.addMessage()

Answer

rejectRecord()

Question 3

Which TWO techniques can be used to pass data from a parent component to a child Lightning Web Component? Choose 2 answers.

Accepted Answer

Calling public @api methods defined on the child component instance from the parent JavaScript.. Data is passed down via public properties decorated with @api or by invoking public child methods.

Answer

Using application events via $A.get('e...')

Answer

Directly modifying child private properties using DOM queries.

Answer

Using global window variables.

Question 4

A developer is building a Lightning Web Component and needs to navigate to a URL that is external to Salesforce. Which PageReference type should be used with NavigationMixin?

Accepted Answer

standard__webPage. standard__webPage is the PageReference type for navigating to external URLs or web pages.

Answer

standard__recordPage

Answer

standard__namedPage

Answer

standard__objectPage

Question 5

A developer is deploying a profile and custom fields using an Unmanaged Change Set. Upon deployment, some custom field permissions fail to apply correctly in production. What is the most likely cause of this behavior?

Accepted Answer

Field-level security settings on profiles are sometimes omitted or overridden if the target profile already exists and has conflicting security configurations.. Profiles and permission sets in change sets require careful component selection, and field-level security is often best handled via permission sets or post-deployment steps.

Answer

Unmanaged change sets require manual XML editing prior to upload.

Answer

Change sets do not support the deployment of custom fields under any circumstances.

Answer

Profiles cannot be included in outbound change sets.

Question 6

A developer writes an Apex method that executes a SOQL query using user-supplied search parameters. How can the developer protect against SOQL injection vulnerabilities?

Accepted Answer

Use bind variables in the SOQL query instead of string concatenation.. Using bind variables in SOQL queries automatically sanitizes the input and prevents SOQL injection, unlike string concatenation.

Answer

Execute the query using Database.queryWithBinds() with a restricted access modifier.

Answer

Use String.escapeSingleQuotes() on all user inputs before concatenating into the query string.

Answer

Enclose all dynamic parameters in single quotes within the dynamic SOQL query string.

Question 7

Which THREE factors influence deployment success?

Accepted Answer

Profile/Permission Set permissions.. Tests, dependencies, and profile permissions are critical.

Answer

The number of users.

Answer

The color of the UI.

Question 8

A developer needs to check if a specific key exists in a Map<String, Decimal> before retrieving its value. Which Map method should be used?

Accepted Answer

containsKey(). The containsKey() method checks whether a specified key exists in a Map instance.

Answer

hasKey()

Answer

contains()

Answer

exists()

Question 9

A developer is designing an asynchronous architecture using Batch Apex. Which THREE considerations must be kept in mind regarding Batch Apex behavior? (Choose THREE.)

Accepted Answer

Up to 5 batch jobs can be in execution concurrently for a single organization.. Batch apex jobs are queued in the Flex queue, can execute up to 5 concurrent jobs, and can maintain state using Stateful.

Answer

The maximum batch size query locator limit is 200 records maximum.

Answer

Batch Apex automatically executes synchronously if triggered from a Visualforce controller.

Question 10

Which TWO features are characteristics of SOSL (Salesforce Object Search Language) queries? Choose 2 answers.

Accepted Answer

SOSL can search across multiple sObjects and fields in a single query.. SOSL searches text across multiple objects and fields simultaneously and can tokenize words for matching.

Answer

SOSL returns a single flat List of SObjects.

Answer

SOSL queries can update existing records directly.

Answer

SOSL queries are limited to a maximum of 10 records per search.

Question 11

A developer implements a Queueable class that makes an external REST callout. The developer needs to test this class using Test.startTest() and Test.stopTest(). What is required for the callout to succeed in the test method?

Accepted Answer

Implement the HttpCalloutMock interface and assign it using Test.setMock(). Callouts are not allowed in test methods unless mocked. The test must implement the HttpCalloutMock interface to simulate the response.

Answer

Set the remote site setting active in the test context.

Answer

Use the Database.AllowsCallouts interface on the test class.

Answer

Wrap the callout in a try-catch block to bypass test restrictions.

Question 12

A developer wants to conditionally display an HTML element in a Lightning Web Component template based on a boolean property named 'isVisible'. Which directive should be used?

Accepted Answer

lwc:if. lwc:if is the modern conditional directive in LWC.

Answer

renderIf

Answer

aura:if

Answer

v:if

Question 13

A developer needs to execute long-running computations that require complex chaining and the ability to pass non-primitive data types to the job. Which asynchronous feature should the developer implement?

Accepted Answer

Queueable Apex. Queueable Apex supports the Database.AllowsCallouts interface, allows chaining of jobs, and accepts member variables of non-primitive types such as custom objects.

Answer

Schedulable Apex

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Future methods

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Batch Apex

Question 14

An Apex trigger needs to update fields on the same record that is currently being inserted in a Before Insert trigger context. How should the developer implement this update?

Accepted Answer

Assign values directly to the fields on the records in Trigger.new.. In a before insert trigger, records are already in memory and have not yet been saved to the database. Developers can modify fields directly on the Trigger.new records without calling an explicit DML operation.

Answer

Use an immediate DML statement update Trigger.new; inside the trigger.

Answer

Instantiate a separate list of the same records and call database.insert().

Answer

Utilize an after insert trigger to perform an update DML operation.

Question 15

You need to inspect the heap size during the execution of a long-running batch job. Which debug log category should you monitor?

Accepted Answer

Profiling. The Profiling log category in Salesforce captures Apex execution details including heap size, CPU time, and SOQL/DML limits, making it the correct category to monitor heap consumption during a long-running batch job. Apex Code logs capture execution flow and debug statements but do not surface heap metrics directly. Validation and Workflow categories are unrelated to Apex runtime resource usage.

Answer

Apex Code

Answer

Validation

Answer

Workflow