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Salesforce DEX-450 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Programmatic Development using Apex and Visualforce in Lightning Experience |
| Exam Number: | DEX-450 |
| Related Certifications: | Salesforce Platform Developer I Salesforce Platform Developer II |
| Available Languages: | English |
| Exam Format: | Multiple choice questions (typical Salesforce training exams), Course assessment (format varies by provider) |
| Recommended Training: | Salesforce Apex Developer Guide Salesforce Visualforce Developer Guide |
| Exam Registration: | Salesforce Trailhead Training |
| Sample Questions: |  |
| Exam Way: | Instructor-led training assessment or course completion exam (varies by training provider) |
| Pre Condition: | Basic understanding of object-oriented programming and database concepts is recommended. Prior Salesforce experience is helpful but not strictly required. |
| Official Syllabus URL: | https://trailhead.salesforce.com |
Salesforce DEX-450 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Security and Best Practices | - Security model
|
| Apex Programming Fundamentals | - Collections and data handling
|
| Apex Triggers and Automation | - Trigger design patterns
|
| Visualforce Development | - UI components
|
| Database and SOQL/SOSL | - SOQL queries
|
| Testing and Debugging | - Apex testing framework
|
Common Questions About the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam
The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience exam is the official Salesforce test registered under exam code DEX-450. Passing it earns you the Salesforce Programmatic Development using Apex and Visualforce (Training Course) certification. It is also linked to the related certifications: Salesforce Platform Developer I, Salesforce Platform Developer II. Salesforce exams are valued because they test job-ready skills, so a passing score here carries real weight on a resume.
Basic understanding of object-oriented programming and database concepts is recommended. Prior Salesforce experience is helpful but not strictly required.
Eligibility rules do change from time to time, so confirm the current requirements before you register on the official exam page.
Registration for the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience exam goes through the official channels below.
As for the delivery format, the exam is taken Instructor-led training assessment or course completion exam (varies by training provider).
Salesforce points candidates toward the following training options for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience.
Course work builds the foundation; question practice makes it stick. The 202 practice questions in the ActualCollection DEX-450 package let you rehearse each topic under exam-style pressure before the real thing.
Yes. ActualCollection offers a free PDF demo of the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience material so you can judge the question quality and format before spending anything. After purchase, your license includes 365 days of free updates, and if you want to keep receiving updates after that period, renewals are available at a 50% discount.
If you take the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience exam within 60 days of your purchase and do not pass, ActualCollection backs you with a 100% money-back guarantee. The claim must match the exam your product covers: attempts taken within 3 days of purchase are not eligible (that is too little preparation time), and neither are downloaded-but-unused products, free materials, or expired orders. The candidate name must match the payer name, and you need to submit a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Prefer not to refund? You can swap instead and receive two other exam products of equal value for free while keeping the update service on your original purchase.
Delivery itself is instant: your files are downloadable right away and emailed to you within one minute of payment. If nothing arrives within 2 hours, contact customer service. There is no limit on how many computers you may install the software on.
The official Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience syllabus is organized into 6 domains. Key areas include Apex Programming Fundamentals, Database and SOQL/SOSL, and Security and Best Practices. The complete, up-to-date topic list appears in the exam topics section above; work through it line by line and flag anything you cannot yet explain in your own words.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions:
A developer must write an Apex method that will be called from a Lightning component. The method may delete an Account stored in the accountRec variable.
Which method should a developer use to ensure only users that should be able to delete Accounts can successfully perform deletions?
- A. Account,isDeleteable
- B. accuntRec, sObjectType,isDeletable()
- C. accountRec, isDeletable()
- D. Schema,sObjectType,Account, isDeletable ()
Correct Answer: D 🗳️
Since Aura application events follow the traditional publish-subscribe model, which method is used to fire an event?
- A. FireEvent()
- B. SegdetesEvent (}
- C. emit()
- D. fire()
Correct Answer: D 🗳️
The value of the account type field is not being displayed correctly on the page. Assuming the custom controller is properly referenced on the Visualforce page, what should the developer do to correct the problem?
- A. Add with sharing to the custom controller.
- B. Add a getter method for the actType attribute.
- C. Convert theAccount.Type to a String.
- D. Change theAccount attribute to public.
Correct Answer: B 🗳️
Which two statements are true about using the @testSetup annotation in an Apex test class?
Choose 2 answers
- A. The @testSetup annotation is not supported when the @isTest(SeeAllData=True) annotation is used .
- B. In a test setup method, test data is inserted once and made available for all test methods In the test class.
- C. Records created in the test setup method cannot be updated in individual test methods.
- D. A method defined with the @testSetup annotation executes once for each test method in the test class and counts towards system limits.
Correct Answer: A,B 🗳️
Universal Containers wants to assess the advantages of declarative development versus programmatic customization for specific use cases in its Salesforce implementation.
What are two characteristics of declarative development over programmatic customization?
Choose 2 answers
- A. Declarative development does not require Apex test classes.
- B. Declarative development has higher design limits and query limits,
- C. Declarative code logic does not require maintenance or review.
- D. Declarative development can be done using the Setup menu.
Correct Answer: A,D 🗳️
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