SALESFORCE-PD1 Practice Test 24 — 15 Questions

Question 1

A developer needs to navigate to a record detail page from a Lightning Web Component. Which service should be used?

Accepted Answer

lightning/navigation. The lightning/navigation service provides the NavigationMixin, which allows Lightning Web Components to navigate to record detail pages, list views, and other pages using standard navigation. It is the recommended way to navigate within Salesforce.

Answer

lightning/pageReference

Answer

window.location.href

Answer

lightning/uiRecordApi

Question 2

A developer is writing a test for a method that performs a callout. How must the callout be handled?

Accepted Answer

Implement the HttpCalloutMock interface.. Apex tests cannot make real HTTP callouts, so the developer must implement the HttpCalloutMock interface and register it with Test.setMock() before the callout is invoked. This allows the test to return a fabricated HttpResponse, making the callout deterministic and avoiding the 'callout not allowed' runtime error.

Answer

Use the @future annotation.

Answer

Use Test.startTest().

Answer

The test will automatically fail.

Question 3

A developer is writing an Apex trigger and needs to optimize performance and prevent governor limit violations. Which TWO practices should the developer follow? (Choose two.)

Accepted Answer

Use trigger context variables like Trigger.new to process records in bulk.. Option D is correct because Apex triggers must be bulkified: using trigger context variables such as Trigger.new lets the trigger process all records in a single invocation rather than one at a time, which conserves governor limits (e.g., the 100 SOQL queries and 150 DML statements per transaction). Option E is correct because moving SOQL queries and DML operations outside of loops ensures they execute once for the entire collection of records, avoiding the limit on queries/statements that would be exhausted by per-record execution inside a loop. Option A is wrong because placing DML inside a for loop causes one DML statement per iteration, quickly hitting the 150 DML statement governor limit and degrading performance. Option B is wrong because the webservice keyword merely exposes a method for external web service callouts and does nothing to optimize trigger performance or prevent governor limit violations. Option C is wrong because issuing a separate SOQL query for each record in Trigger.new is the classic anti-pattern that exhausts the 100 synchronous SOQL query limit instead of bulkifying the query.

Answer

Place DML statements inside 'for' loops to ensure immediate database commits.

Answer

Use the 'webservice' keyword on helper methods called by triggers.

Answer

Execute a separate SOQL query for every single record in Trigger.new.

Question 4

A developer needs to configure a Lightning Web Component to be available for use on Lightning Record Pages. Which configuration entry must be present in the component's metadata file (.js-meta.xml)?

Accepted Answer

lightning__RecordPage. To expose a Lightning Web Component on Lightning Record Pages, the .js-meta.xml file must include the <target> lightning__RecordPage. This target tells the Lightning framework that the component is eligible to be dragged onto record page layouts in Lightning App Builder. Other targets correspond to different surfaces such as app pages, home pages, or utility bars.

Answer

lightning__AppPage

Answer

lightning__GlobalAction

Answer

lightning__UtilityBar

Question 5

A developer is writing a unit test that executes under a specific user context to verify sharing rules. Which method should the developer use to specify the user for the subsequent test operations?

Accepted Answer

System.runAs(). System.runAs() enables developers to run test methods under a specific user context to verify record-level security and sharing rules.

Answer

UserInfo.setUserId()

Answer

Database.setSavepoint()

Answer

Test.setCurrentUser()

Question 6

A developer needs to create a custom tab for a Lightning Web Component so it can be navigated to from the App Launcher. What type of custom tab must be created?

Accepted Answer

Lightning Component Tab. Lightning component tabs allow Lightning Web Components and Aura components to be exposed as tabs.

Answer

Visualforce Tab

Answer

Object Tab

Answer

Web Tab

Question 7

Which TWO statements are true regarding the behavior of Apex triggers and context variables? Choose 2 answers.

Accepted Answer

Trigger.old is available in update and delete triggers.. Option A is correct because Trigger.old holds the previous versions of the records and is populated in update triggers (the old values before the change) and in delete triggers (the records being deleted), so it is available in both update and delete contexts. Option B is correct because Trigger.new holds the new versions of the records and is populated in insert triggers (records being created), update triggers (records with their new values), and undelete triggers (records being restored), making it available in all three contexts. Option C is wrong because Trigger.old is not available in insert triggers, since there are no prior versions of records that do not yet exist. Option D is wrong because Trigger.new records are read-only only in after triggers; in before triggers they are writable and can be modified to change what is saved. Option E is wrong because Trigger.newMap is not available in before insert triggers, since the records have no IDs yet and the map is keyed by record ID.

Answer

Trigger.old is available in insert and update triggers.

Answer

Trigger.new records are always read-only in before triggers.

Answer

Trigger.newMap is available in before insert triggers.

Question 8

Which TWO features are characteristic of Flow Builder compared to Apex triggers? (Choose two.)

Accepted Answer

Flows provide a visual canvas for building automation logic without writing code.. Flow Builder is declarative, provides visual debugging, and allows point-and-click creation.

Answer

Flows execute entirely on client-side browsers.

Answer

Flows require compilation into bytecode and deployment via metadata APIs or developer toolchains.

Answer

Flows cannot interact with custom objects or custom fields.

Question 9

Which tool provides a declarative alternative to Apex triggers for creating records when another record is created?

Accepted Answer

Record-Triggered Flow. Record-triggered flows in Flow Builder allow declarative creation of related records.

Answer

Validation Rules

Answer

Assignment Rules

Answer

Approval Processes

Question 10

A developer wants to log information specifically when a condition is met. Which method is most appropriate?

Accepted Answer

System.debug().. System.debug() is the Apex method used to write messages to the debug log, and it can be wrapped in an if-condition to log only when a specific condition is met. It supports log levels (ERROR, WARN, INFO, DEBUG, FINE, FINER, FINEST) that map to the DebugLevel configuration.

Answer

System.log().

Answer

Apex.debug().

Answer

Log.info().

Question 11

An Apex trigger needs to prevent duplicate records from being inserted based on a custom external ID field. Which approach should the developer take to optimize query performance and respect governor limits?

Accepted Answer

Collect the external ID values into a Set, query once outside the loop, and use a Map for validation.. Collecting field values into a Set, querying existing records matching that Set in a single query outside of loops, and comparing in memory is the bulkified approach.

Answer

Use Database.upsert with strict mode enabled inside the trigger loop.

Answer

Query the database inside a for loop for every record in Trigger.new.

Answer

Use an asynchronous @future method to validate duplicates after insert.

Question 12

A developer is analyzing the Salesforce order of execution for a record update. Which TWO events occur AFTER custom validation rules are evaluated? (Choose TWO.)

Accepted Answer

Execution of Assignment Rules and Escalation Rules.. Options C and E are correct because in the Salesforce order of execution, custom validation rules run after before triggers and system validation, and then the process continues to assignment rules and escalation rules (C) for cases/leads, followed later by after-save logic such as record-triggered after flows and Apex after triggers (E). Option A is incorrect because before triggers execute before custom validation rules, not after. Option B is incorrect because it is the reference point itself—custom validation rules are evaluated, so they do not occur after themselves. Option D is incorrect because initial system validation, including required field checks, occurs before custom validation rules are evaluated.

Answer

Execution of Before Triggers.

Answer

Execution of custom validation rules

Answer

Execution of initial system validation (such as required field checks).

Question 13

A developer needs to assign a default value to a custom picklist field via Apex when creating a Lead record. What data type should be assigned to the picklist field in Apex?

Accepted Answer

String. Picklist fields in Salesforce are represented as Strings in Apex when assigned or retrieved via sObjects.

Answer

Boolean

Answer

PicklistEntry

Answer

Integer

Question 14

Which THREE operations can cause an automatic roll back of an entire Apex transaction? Choose 3 options.

Accepted Answer

Exceeding a governor limit such as SOQL query count.. Option C is correct because exceeding a governor limit (such as the SOQL query count) throws a runtime exception that cannot be caught, and the platform rolls back the entire Apex transaction. Option D is correct because standard DML statements (and Database methods with allOrNone set to true) throw a DmlException on failure, and if that exception is unhandled it aborts and rolls back the whole transaction. Option E is correct because any unhandled exception propagating up the execution stack terminates the transaction and triggers an automatic rollback of all DML performed in it. Option A is not correct because catching a DmlException in a try-catch block lets execution continue, so the transaction is not automatically rolled back. Option B is not correct because Database.insert(records, false) uses allOrNone=false, allowing partial success without rolling back the entire transaction.

Answer

Catching a DmlException inside a try-catch block.

Answer

Executing Database.insert(records, false) with partial failure.

Question 15

A developer needs to convert a JSON string representing a list of Account objects into an actual Apex List of Accounts. Which method should be used?

Accepted Answer

JSON.deserialize(jsonString, List<Account>.class). JSON.deserialize() or JSON.deserializeUntyped() are used to parse JSON, and JSON.deserialize(jsonString, TargetType.class) deserializes into strongly typed objects.

Answer

String.valueOf(jsonString)

Answer

JSON.serialize()

Answer

JSON.parse()