Salesforce Developer Practice Test

1. What is the primary purpose of the Lightning Component Framework in Salesforce?

To create single-page web applications using JavaScript and component-based architecture

To manage Salesforce user authentication only

To replace all Visualforce pages automatically

To handle database backups and recovery

2. Which of the following is a governor limit in Salesforce that restricts Apex execution?

Maximum 100 SOQL queries per transaction

Unlimited API calls per minute

No limit on DML statements

Unlimited heap size

3. In a Salesforce trigger, what does the 'before' context allow you to do?

Modify field values before the record is saved to the database

Query related records after insertion

Send email notifications immediately

Delete related child records

4. Which declarative feature in Salesforce allows you to automate business processes without code?

Flow and Process Builder

Apex classes only

Visualforce pages

API integrations

5. What does DML stand for in Salesforce development?

Data Manipulation Language

Database Management Logic

Dynamic Module Library

Declarative Markup Language

6. Which Salesforce API would you use to retrieve metadata about custom fields and objects?

Metadata API

REST API

SOAP API

Tooling API

7. In Lightning Web Components, what is the purpose of the @wire decorator?

To reactively bind data from Apex methods or Salesforce objects to component properties

To create HTML templates

To define CSS styling rules

To handle user click events

8. Which testing framework in Apex allows you to write unit tests with assertions?

System.assert and Test class

JUnit only

Mocha framework

Jest testing

9. What is the minimum code coverage required for Apex code to be deployed to production?

75%

50%

90%

100%

10. In Salesforce, what does a validation rule do?

Prevents users from saving records that don't meet specified criteria

Automatically deletes invalid records

Sends emails to administrators

Creates backup copies of data

11. In Apex, what does the @AuraEnabled annotation allow you to do?

Expose Apex methods to Lightning components and external applications

Mark a class as abstract

Define a custom exception

Create a scheduled batch job

12. What is the correct syntax to query records using SOQL with a WHERE clause?

SELECT Id, Name FROM Account WHERE Industry = 'Technology'

QUERY Account SELECT Id, Name WHERE Industry = 'Technology'

FIND Account Id, Name WHERE Industry = 'Technology'

GET Account WHERE Id, Name AND Industry = 'Technology'

13. What is the purpose of a custom object in Salesforce?

To store data specific to your organization's business needs

To store only system metadata

To replace standard objects permanently

To create Apex class definitions

14. In Apex, which keyword is used to prevent a class from being instantiated or extended?

Final

Abstract

Static

Private

15. What is a relationship field in Salesforce that creates a master-detail connection?

A lookup field that enforces referential integrity and cascading deletes

A text field that stores related record IDs

A formula field that calculates values

A roll-up summary field