SALESFORCE-PD1 Practice Exam 2 — 20 Questions

Question 1

A developer needs to run an Apex class in system mode, ignoring user-level object and field-level permissions, but enforcing organization-wide sharing rules. How should the class be declared?

Accepted Answer

public with sharing class MyClass. Declaring a class with 'with sharing' enforces sharing rules while inheriting the execution context's sharing mode, but to explicitly ignore CRUD/FLS while respecting sharing, 'with sharing' is standard, while 'without sharing' ignores sharing entirely. To enforce sharing rules while maintaining system mode for FLS, developers use specific methods or classes; however, standard class-level keywords are 'with sharing', 'without sharing', or omitting sharing keywords to inherit. Wait, system mode ignores FLS/CRUD automatically unless specified, but sharing rules are controlled by the sharing keyword. Using 'with sharing' enforces sharing rules.

Answer

public system mode class MyClass

Answer

public without sharing class MyClass

Answer

public inherited sharing class MyClass

Question 2

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)

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JSON.serialize()

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JSON.parse()

Question 3

A developer needs to write an Apex trigger that fires before an Account is inserted and accesses the value of the custom field 'Rating__c'. Which collection type is best suited to iterate over the incoming records in the trigger context variable?

Accepted Answer

List<Account>. Trigger.new provides a List of sObjects, making a standard List or for-loop iteration the correct approach for handling trigger context records.

Answer

Account[]

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Set<Account>

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Map<Id, Account>

Question 4

Which THREE techniques help prevent hitting governor limits when writing SOQL queries in Apex? Choose 3 answers.

Accepted Answer

Filtering queries using indexed fields (such as Id, Name, or external IDs) where possible.. Best practices include querying into collections, using bind variables, and filtering with indexed fields.

Answer

Omitting LIMIT clauses on large queries to ensure all records are fetched at once.

Answer

Placing SOQL queries inside helper methods called within loops.

Question 5

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.. Triggers must be bulkified to handle collections of records and queries/DML operations must be kept outside loops.

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 6

A developer needs to write a secure SOQL query that prevents unauthorized data exposure by respecting both sharing rules and field-level security. Which TWO approaches can the developer combine to achieve this? (Choose two.)

Accepted Answer

Include the 'WITH SECURITY_ENFORCED' clause in the SOQL query.. Sharing rules are enforced via class keywords, while FLS can be enforced using WITH SECURITY_ENFORCED or Security.stripInaccessible.

Answer

Disable FLS checks in user profile settings before executing queries.

Answer

Execute queries inside an asynchronous @future method.

Answer

Use the 'without sharing' keyword on all transaction controllers.

Question 7

Which TWO criteria help a developer decide between using a Record-Triggered Flow and an Apex Trigger? (Choose two.)

Accepted Answer

Record-Triggered Flows provide declarative maintenance and faster build times for standard business logic.. Flow vs Apex decisions often depend on declarative preference, complexity, skill set, and architectural needs.

Answer

Apex Triggers cannot be deactivated without deploying code changes.

Answer

Record-Triggered Flows cannot run asynchronously.

Answer

Flows cannot execute before-save updates.

Question 8

Which TWO practices are considered best practices when writing Apex unit tests in Salesforce? (Choose two.)

Accepted Answer

Create all required test data within the test method or test setup method.. Using Test.startTest/stopTest and avoiding SeeAllData=true are essential Apex testing best practices.

Answer

Hardcode record IDs directly from the sandbox into assertions.

Answer

Query production records directly in every assertion to verify live system status.

Answer

Use @isTest(SeeAllData=true) on all test classes to ensure maximum compatibility with production data.

Question 9

A developer wants to ensure that a custom Apex REST service method properly handles authentication and executes securely in the context of the calling user. How should the class be defined?

Accepted Answer

global class with sharing. Apex REST services must be global classes, and specifying with sharing ensures sharing rules are respected.

Answer

webservice class without sharing

Answer

public class with sharing

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private class inherited sharing

Question 10

Which SOQL query utilizes the correct syntax to retrieve child Contact records from a parent Account record using the standard relationship name?

Accepted Answer

SELECT Id, (SELECT Id FROM Contacts) FROM Account. Standard child relationships use the pluralized object name with '__r' for custom or standard naming conventions (e.g., Contacts).

Answer

SELECT Id, (SELECT Id FROM Contact__r) FROM Account

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SELECT Id, (SELECT Id FROM Account.Contacts) FROM Account

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SELECT Id, (SELECT Id FROM Contact) FROM Account

Question 11

Which THREE design patterns or tools help ensure secure coding practices regarding CRUD and FLS in Apex? Choose 3 options.

Accepted Answer

Using Security.stripInaccessible() before upserting data.. Security.stripInaccessible, WITH SECURITY_ENFORCED clause, and explicit Schema describe checks are valid methods.

Answer

Declaring every class with 'without sharing'.

Answer

Relying solely on Lightning Web Component HTML rendering tags.

Question 12

An Apex transaction performs a DML operation, followed by a callout to an external REST API, followed by another DML operation. What exception will Salesforce throw?

Accepted Answer

CalloutException. Salesforce throws a CalloutException when a DML operation has occurred before a callout in the same transaction, to prevent database locks.

Answer

AsyncException

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LimitException

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SystemException

Question 13

When deploying via Metadata API, what happens if a test class fails during the deployment?

Accepted Answer

The deployment fails and rolls back all changes.. The entire deployment fails by default unless specified otherwise.

Answer

Only the failing test class is ignored.

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The deployment succeeds but flags a warning.

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The deployment continues but prevents Apex compilation.

Question 14

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 15

What is the return type of a SOQL query that returns a single aggregate result, such as SELECT COUNT() FROM Account?

Accepted Answer

Integer. A SOQL query using COUNT() without a GROUP BY clause returns an Integer representing the row count.

Answer

AggregateResult

Answer

Decimal

Answer

List<SObject>

Question 16

An Apex trigger executes during a bulk insert of 300 records. To adhere to best practices regarding governor limits and bulkification, how should SOQL queries be written?

Accepted Answer

Query once outside the loop using a collection of IDs from Trigger.new. Queries must be written using bulkified collections, querying once outside of loops using bind variables for all records in Trigger.new.

Answer

Query inside a for-loop iterating over Trigger.new

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Query each record individually using Limits.getQueries() checks

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Use an asynchronous future method for every individual record

Question 17

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

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Schedulable

Answer

Database.Batchable

Question 18

Which THREE best practices should a developer follow to avoid governor limits when writing SOQL queries in Apex? Choose 3 options.

Accepted Answer

Query only the specific fields needed rather than using SELECT *.. Best practices include avoiding queries inside loops, using bind variables, and querying only necessary fields.

Answer

Execute a separate SOQL query for every child record individually.

Answer

Always use SELECT FIELDS(ALL) to ensure all data is retrieved.

Question 19

Which TWO statements about SOQL relationship queries are true? Choose 2 options.

Accepted Answer

Child-to-parent queries use dot notation (e.g., Account.Name).. Parent-to-child queries use subqueries in parentheses, and child-to-parent queries use dot notation.

Answer

SOQL supports traversing up to 10 levels of parent relationships.

Answer

Parent-to-child queries use dot notation on the parent object.

Answer

Child-to-parent queries require subqueries.

Question 20

Which TWO of the following statements about Trigger.new and Trigger.old are accurate?

Accepted Answer

Trigger.old is available in update triggers. Trigger.new is always present on insert/update; Trigger.old is always present on update/delete.

Answer

Trigger.old is available in insert triggers

Answer

Trigger.newMap is available in before insert

Answer

Trigger.new is available in delete triggers