SALESFORCE-PD1 Practice Questions

Question 1

Which primitive data type in Apex can represent a specific point in time, including both date and time values?

Accepted Answer

Datetime. The Datetime data type represents both a date and a time in Apex.

Answer

Date

Answer

Time

Answer

Timestamp

Question 2

A developer needs to iterate over a map of Account IDs to Account sObjects and perform processing on each value. Which loop construct is valid Apex?

Accepted Answer

for(Account acc : myMap.values()) { ... }. Iterating over map values is done using map.values() in a for-loop: for(Account acc : myMap.values()).

Answer

for(KeyValue kv : myMap.entrySet()) { ... }

Answer

for(Account acc : myMap) { ... }

Answer

for(Id id : myMap.iterator()) { ... }

Question 3

A developer creates an Apex trigger that updates related Contact records whenever an Account record is updated. The trigger performs a DML operation on the Contacts. During testing, updating an Account causes the trigger to fire infinitely and throw a System.LimitException: Maximum trigger depth exceeded. Which design pattern should the developer implement to prevent this recursion?

Accepted Answer

Use a static boolean flag in a helper class to ensure the trigger block executes only once per transaction.. Using a static boolean flag in a helper class is the standard Salesforce pattern to prevent recursive trigger execution by tracking whether the trigger logic has already run in the current transaction.

Answer

Use a Database.setSavepoint() before the DML operation to rollback if recursion occurs.

Answer

Convert the trigger logic into a Queueable Apex job to defer execution to a separate transaction.

Answer

Check Trigger.isExecuting to determine if the trigger is running in a recursive context.

Question 4

A developer is configuring a Lightning Web Component that uses the Lightning Message Service (LMS). Which module must be imported to publish a message on a message channel?

Accepted Answer

lightning/messageService. publish function and the message channel reference are imported from lightning/messageService and the channel definition file respectively.

Answer

lightning/uiRecordApi

Answer

lightning/empApi

Answer

lightning/navigation

Question 5

What happens if a developer creates a test method that does not contain any assertions?

Accepted Answer

The test passes if the code executes without errors.. The test will pass as long as the code runs without error, but it is not a valid test.

Answer

The test is skipped by the compiler.

Answer

The compiler issues a warning.

Answer

The test fails immediately.

Question 6

A developer creates a custom LWC that wraps child components. The developer needs to pass styling from the parent component into specific slots of the child component. Which CSS selector should be used inside the child component to style content passed into a slot?

Accepted Answer

::slotted(). The ::slotted() pseudo-class selector is used in the child component's stylesheet to target nodes slotted into a <slot> element.

Answer

:content

Answer

:scope

Answer

:host

Question 7

A developer needs to execute a lightweight background task that does not require complex chaining or monitoring. Which asynchronous feature is easiest to implement for a single method call?

Accepted Answer

Future Method. Future methods are the simplest way to run asynchronous code when no complex state or chaining is needed.

Answer

Batch Apex

Answer

Schedulable Apex

Answer

Custom Invocable Action

Question 8

Which TWO methods are available on the Database class for performing DML operations with partial success capability? Choose 2 options.

Accepted Answer

Database.update(). Database.insert() and Database.update() accept an allOrNone boolean parameter allowing partial success.

Answer

Database.save()

Answer

Database.commit()

Answer

Database.persist()

Question 9

A developer writes an Apex method that executes a SOQL query inside a for-loop over a list of 200 Account records. Which governor limit is most likely to be immediately breached?

Accepted Answer

Total number of SOQL queries issued. The synchronous limit for SOQL queries is 100 per transaction. Querying inside a loop over 200 records will exceed this limit.

Answer

Total heap size allocation

Answer

Maximum CPU time on Salesforce servers

Answer

Total number of records retrieved by SOQL queries

Question 10

A developer is writing a test class for an Apex trigger and needs to insert test Account records. Best practices recommend bypassing hardcoded IDs. Which annotation should be placed on the test setup method to create common test data efficiently?

Accepted Answer

@TestSetup. The @TestSetup annotation allows developers to create test records once and make them available for all test methods in the class.

Answer

@IsTest(SeeAllData=true)

Answer

@TestVisible

Answer

@RemoteAction

Question 11

Which type of Apex trigger context variable returns a list of new versions of the sObject records?

Accepted Answer

Trigger.new. Trigger.new contains all the new versions of the sObject records for insert and update triggers.

Answer

Trigger.newMap

Answer

Trigger.old

Answer

Trigger.caller

Question 12

Which Apex data type is best suited for storing monetary amounts with high precision?

Accepted Answer

Decimal. The Decimal data type is used for currency and precise numerical calculations in Apex.

Answer

Double

Answer

String

Answer

Integer

Question 13

A developer is writing a test method that performs a callout to an external REST service. Which interface must the developer implement to provide mock responses during the unit test execution?

Accepted Answer

HttpCalloutMock. HttpCalloutMock is the interface implemented to supply a mock HTTP response during test context when callouts are made.

Answer

InstallHandler

Answer

Schedulable

Answer

Database.Batchable

Question 14

Which THREE data types are primitive data types supported in Apex? (Choose three.)

Accepted Answer

Boolean. Apex supports standard primitive types including Boolean, Integer, and String.

Answer

WorkflowRule

Answer

LightningComponent

Question 15

A developer wants to ensure that specific test data is available to all test methods in a class without recreating it. Which method should be used?

Accepted Answer

Use @testSetup.. @testSetup methods are executed once per class and set up data for all methods.

Answer

Use a static constructor.

Answer

Use a private method called by all tests.

Answer

Use Test.loadData().

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