1

Which design pattern ensures only one instance of a class is created and provides a global access point to it in Apex?

AFactory Pattern BStrategy Pattern CSingleton Pattern DDecorator Pattern

2

In the Apex Enterprise Patterns, which layer is responsible for encapsulating SOQL queries and abstracting data access from the service layer?

ASelector Layer BDomain Layer CService Layer DController Layer

3

A developer needs to chain multiple Queueable Apex jobs so each one starts after the previous completes. What is the maximum depth of Queueable chaining in a synchronous context?

A1 B5 C10 DUnlimited (but only 1 child per execution in synchronous)

4

Which interface must a class implement to be used as a Batch Apex job that supports state across batch executions?

ADatabase.Batchable BDatabase.Stateful CDatabase.AllowsCallouts DDatabase.Trackable

5

In LWC, which decorator is used to expose a component's property so it can be set by a parent component?

A@track B@wire C@api D@observable

6

Which Apex design pattern allows you to define a family of algorithms, encapsulate each one, and make them interchangeable at runtime?

AStrategy Pattern BObserver Pattern CCommand Pattern DTemplate Method Pattern

7

What is the purpose of Named Credentials in Salesforce integration?

ATo store API field mappings for external objects BTo encrypt callout response payloads CTo configure Remote Site Settings automatically DTo store endpoint URLs and authentication credentials securely for callouts

8

Which SOQL technique should a developer use to avoid heap size limits when iterating over a large number of records in Apex?

AUse LIMIT clauses to page through results BSOQL for loops (for (SObject obj : [SELECT ...]) CDatabase.query() with offset pagination DQueryLocator in a trigger context

9

In LWC Jest testing, which module is used to mock wire adapter responses?

A@salesforce/apex mock Blwc-jest-mock C@salesforce/sfdx-lwc-jest wire service mock Djest.mock('@salesforce/schema')

10

Which Platform Event characteristic differentiates it from a standard custom object in terms of persistence?

APlatform Events are stored for 72 hours and cannot be queried with arbitrary SOQL filters BPlatform Events are stored indefinitely like standard objects CPlatform Events support full DML (insert, update, delete) DPlatform Events can be subscribed to only by Apex triggers

11

To enforce CRUD and FLS checks in Apex code, which approach should a developer use in API version 56.0 and later?

AManual checks using Schema.describeSObjects() before every DML BThe with sharing keyword on all classes CSecurity.stripInaccessible() before inserting data DUsing "with user mode" or AccessLevel.USER_MODE in SOQL and DML operations

12

What is the primary use of a Skinny Table in Salesforce?

ATo store archived records past the data storage limit BTo improve query performance by creating a narrow, optimized copy of a frequently queried table CTo replicate data to an external database DTo cache SOQL results in memory

13

Which integration pattern uses Salesforce Outbound Messaging to notify an external system when a record changes?

ARequest-Reply BBatch Data Synchronization CFire and Forget (Event-Driven) DPublish-Subscribe via Platform Events only

14

In Apex Enterprise Patterns, the Domain Layer wraps which object?

AA list of SObjects representing the records being processed BA SOQL query string CAn HTTP callout response DA unit of work (UoW) transaction

15

Which tool allows a developer to replay a transaction and step through Apex code line by line using actual logged data?

ADeveloper Console BSetup Audit Trail CSalesforce Inspector DApex Replay Debugger in VS Code

16

Which LWC lifecycle hook fires after the component is inserted into the DOM and all child components have rendered?

Aconstructor() BconnectedCallback() CrenderedCallback() DdisconnectedCallback()

17

A developer wants to make a callout from a Batch Apex execute() method. What must the batch class implement in addition to Database.Batchable?

ASchedulable BDatabase.Stateful CDatabase.AllowsCallouts DQueueable

18

Which Custom Metadata Type advantage makes it superior to Custom Settings for storing configuration data that must be deployable via Change Sets or packages?

ACustom Metadata records are metadata and can be deployed; Custom Settings data cannot BCustom Metadata Types support more field types than Custom Settings CCustom Metadata Types support user-level and profile-level hierarchy DCustom Metadata Types do not count against data storage limits unlike Custom Settings

19

Which method in an LWC component is used to imperatively call an Apex method (not via @wire)?

AapexMethod.call() Bapex.invoke() Cthis.template.apexCall() DCalling the imported Apex function directly as a Promise

20

Which approach is recommended for avoiding SOQL injection vulnerabilities when building dynamic SOQL queries in Apex?

AUse String.format() to construct the query BUse String.escapeSingleQuotes() to sanitize user input CAvoid dynamic SOQL entirely and use static SOQL only DWrap user input in try-catch blocks

21

Which Apex class is used to send a SOAP web service callout?

AHttpRequest / HttpResponse BRestContext CA generated Apex stub from WSDL2Apex DWebServiceCallout.invoke()

22

In an event-driven architecture using Platform Events, what ensures that a subscriber processes events at least once even if it goes offline temporarily?

AReplay ID — subscribers can specify the last received Replay ID to receive missed events BPlatform Events are automatically re-published every hour CSalesforce stores Platform Events indefinitely so subscribers can catch up anytime DOutbound Messaging guarantees delivery with acknowledgement

23

Which statement correctly describes selective queries in Salesforce?

AAny query with a WHERE clause is automatically selective BA query is selective if it returns more than 200,000 records CSelectivity is only relevant for reports, not Apex SOQL DA query is selective if it filters on an indexed field and returns fewer than a threshold percentage of total records

24

What is the Heroku Connect feature used for in a Salesforce-Heroku integration?

ATo deploy Apex code directly to Heroku dynos BTo bi-directionally synchronize Salesforce objects with a Heroku Postgres database CTo run scheduled Apex jobs on Heroku infrastructure DTo store Salesforce file attachments on Heroku storage

25

Which Apex pattern uses an interface to define object creation, allowing subclasses to decide which class to instantiate?

ASingleton Pattern BStrategy Pattern CFactory Pattern DDecorator Pattern

26

In LWC, how does a child component communicate an event to a parent component?

ABy dispatching a CustomEvent which the parent listens to with an event handler BBy calling a method on the parent using @api CBy publishing a Lightning Message Channel DBy setting a shared @track variable on the parent

27

Which of the following is a valid trigger best practice in an enterprise trigger framework?

AOne trigger per object with all logic written inline in the trigger body BMultiple triggers per object, each handling one context CTriggers should query data directly for maximum flexibility DOne trigger per object that delegates to handler classes, keeping the trigger body minimal

28

Which Apex annotation marks a method as available for callout from an external REST client?

A@AuraEnabled B@HttpGet / @HttpPost on a class annotated with @RestResource C@RemoteAction D@InvocableMethod

29

What does the "with sharing" keyword enforce in an Apex class?

AField-level security for all SOQL queries in the class BObject-level CRUD permissions for the running user CThe sharing rules and record visibility of the current running user DThat the class runs in system mode with full access

30

Which mechanism should be used to pass data between LWC components that are not in a parent-child relationship?

ALightning Message Service (LMS) with Lightning Message Channel B@api properties CCustomEvent with bubbling DShared @track variables via a service module

31

What is the default batch size for Database.executeBatch() if no size is specified?

A50 B100 C500 D200

32

Which Apex test annotation ensures a test method runs with a fresh governor limit context, isolated from other tests?

A@IsTest(SeeAllData=false) B@IsTest C@TestVisible DTest.startTest() / Test.stopTest()

33

When does a Queueable Apex job run in relation to the transaction that enqueues it?

AIn the same transaction, before it commits BImmediately, in a new thread within the same request CAsynchronously, after the enqueueing transaction completes DOnly when manually invoked from Setup

34

Which wire adapter retrieves metadata about a Salesforce object's fields in an LWC component?

AgetObjectInfo from @salesforce/ui-api BgetRecord from @salesforce/ui-api CgetFieldValue from @salesforce/ui-api DdescribeLayout from @salesforce/apex

35

What is the purpose of the @InvocableMethod annotation in Apex?

ATo expose the method as a REST endpoint BTo allow the method to run in future context CTo make the method callable from LWC via @wire DTo expose the method as an action callable from Flows, Process Builder, or REST API

36

Which Salesforce security review requirement ensures that an AppExchange app does not access data beyond what is necessary?

AThe app must use without sharing on all classes BThe principle of least privilege — request only required permissions and enforce CRUD/FLS CThe app must store all data in Custom Metadata Types DThe app must use Named Credentials for all callouts

37

Which Apex feature allows developers to mock HTTP callouts in unit tests without making actual callouts?

ATest.setMock() with a class implementing Callable BUsing @future(callout=true) in test classes CTest.setMock(HttpCalloutMock.class, mockInstance) DCreating a Remote Site Setting for a localhost endpoint

38

What is the maximum number of Apex classes and triggers that can be concurrently compiled/queued in Salesforce?

AThis is governed by platform limits that vary; developers should focus on governor limits per transaction B500 classes maximum per org C100 classes maximum per transaction D10,000 classes maximum per org

39

In a trigger framework, what is the purpose of a TriggerHandler base class?

ATo replace triggers entirely with Flow-based automation BTo store trigger bypass logic in Custom Settings CTo publish Platform Events from within triggers DTo provide a reusable structure that routes trigger contexts (before insert, after update, etc.) to appropriate handler methods

40

What happens to uncommitted DML operations when an unhandled exception occurs in an Apex trigger?

APartial saves are committed up to the point of the exception BThe entire transaction is rolled back COnly the failing record's DML is rolled back; others are committed DThe exception is silently swallowed and all DML is committed

41

Which governor limit is shared across all Apex code (triggers, classes) running in a single transaction?

APer-class CPU time limit BPer-trigger SOQL query limit CTotal SOQL queries (100 synchronous), DML statements (150), heap size (6 MB) DPer-user daily limit of 1,000 SOQL queries

42

Which Salesforce Connect adapter should be used to access data from an OData 4.0-compliant external system?

AOData 4.0 adapter BCross-org adapter CCustom adapter using Apex DHeroku Connect adapter

43

Which LWC feature enables a component to react to record changes made by other components on the same page without a full page reload?

A@track decorator BImperative Apex refresh CCustomEvent propagation D@wire with getRecord — the wire service automatically refreshes when underlying data changes

44

Which Apex method is used to verify in a test that a specific exception type was thrown?

ASystem.assertException() BA try-catch block with System.assert() on the caught exception type CTest.expectException() DSystem.assertThrows()

45

Which approach avoids hitting SOQL limits when a trigger on Opportunity needs to retrieve related Account fields?

AQuery Account inside a for loop over Trigger.new BUse a @future method to query Account data CQuery Account with all needed fields in a single SOQL call using a Set of AccountIds before the loop DUse Cross-object formula fields in the trigger body

46

What does the Apex Replay Debugger require to function?

AA debug log captured with appropriate log levels, opened in VS Code with the Salesforce Extension Pack BA connected Heroku app running the debug agent CA sandbox environment with Developer Console open DAn active ISV partner account with debug access

47

In a Salesforce integration using REST, which HTTP method is idempotent and should be used to fully replace an existing resource?

APOST BPATCH CDELETE DPUT

48

What is a Continuation in Salesforce Apex used for?

ATo continue a batch job after an exception BTo make asynchronous long-running callouts from Visualforce or Aura/LWC without blocking the UI CTo continue a Flow after a screen component is submitted DTo resume a paused scheduled job

49

Which approach should a developer use to prevent recursive trigger execution in a well-designed trigger framework?

AUse a try-catch block at the top of the trigger BDeactivate the trigger before performing DML CUse a static Boolean flag in a handler class set to true on first execution DUse System.isFuture() to skip execution in async contexts

50

Which Salesforce feature allows an LWC component to subscribe to real-time data changes published via Platform Events?

AempApi wire adapter from lightning/empApi B@wire(getPlatformEvent) CStreaming API via Apex @future callout DLightning Message Service subscription to a Platform Event topic

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