FREE DEX-450 LEARNING CRAM | PASS-SURE SALESFORCE DEX-450: PROGRAMMATIC DEVELOPMENT USING APEX AND VISUALFORCE IN LIGHTNING EXPERIENCE 100% PASS

Free DEX-450 Learning Cram | Pass-Sure Salesforce DEX-450: Programmatic Development using Apex and Visualforce in Lightning Experience 100% Pass

Free DEX-450 Learning Cram | Pass-Sure Salesforce DEX-450: Programmatic Development using Apex and Visualforce in Lightning Experience 100% Pass

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Actual DEX-450 Tests - DEX-450 Valid Braindumps

PassReview offers the complete package that includes all exam questions conforming to the syllabus for passing the Programmatic Development using Apex and Visualforce in Lightning Experience (DEX-450) exam certificate in the first try. These formats of actual Salesforce DEX-450 Questions are specifically designed to make preparation easier for you.

Salesforce DEX-450 exam is designed for professionals who are looking to enhance their knowledge and skills in programmatic development using Apex and Visualforce in a Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam measures the candidate's ability to design, develop, test, and deploy custom applications using these technologies. Passing DEX-450 Exam demonstrates the candidate's proficiency in the Salesforce platform's programmatic development environment and sets them apart as an expert in this field.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q31-Q36):

NEW QUESTION # 31
A primaryid_c custom field exists on the candidate_c custom object. The filed is used to store each candidate's id number and is marked as Unique in the schema definition.
As part of a data enrichment process. Universal Containers has a CSV file that contains updated data for all candidates in the system, the file contains each Candidate's primary id as a data point. Universal Containers wants to upload this information into Salesforce, while ensuring all data rows are correctly mapped to a candidate in the system.
Which technique should the developer implement to streamline the data upload?

  • A. Upload the CSV into a custom object related to Candidate_c.
  • B. Create a Process Builder on the Candidate_c object to map the records.
  • C. Update the primaryid__c field definition to mark it as an External Id
  • D. Create a before Insert trigger to correctly map the records.

Answer: C


NEW QUESTION # 32
Which two platform features allow for the use of unsupported languages? Choose 2 answers

  • A. Docker
  • B. Buildpacks
  • C. App.json
  • D. Heroku Acm

Answer: A,B


NEW QUESTION # 33
When importing and exporting data into Salesforce, which two statements are true?
Choose 2 answers

  • A. Bulk API can be used to import large data volumes in development environments without bypassing the storage limits.
  • B. Developer and Developer Pro sandboxes have different storage limits.
  • C. Bulk API can be used to bypass the storage limits when importing large data volumes in development environments.
  • D. Data import wizard is a client application provided by Salesforce.

Answer: B,D


NEW QUESTION # 34
What is the value of the Trigger.old context variable in a before insert trigger?

  • A. A list of newly created sObjects without IDs
  • B. An empty list of sObjects
  • C. Undefined
  • D. null

Answer: D

Explanation:
Trigger.old in a before insert trigger:
The Trigger.old context variable contains the old version of the records being processed in the trigger.
In a before insert trigger, the records being processed are new and have no prior state in the database, so Trigger.old is null.
This behavior is specific to insert triggers because there is no "old" record to reference before the record is created.
Why is it null?
The Trigger.old variable is only populated for triggers that handle updates or deletions (e.g., before update, after update, before delete, after delete). For insert operations, no previous state of the record exists.
Why not the other options?
A . An empty list of sObjects:
This is incorrect because Trigger.old is not initialized as an empty list for insert triggers-it is simply null.
B . Undefined:
Trigger.old is defined in the trigger context, but it is null for insert operations. Undefined is not a valid Apex state.
D . A list of newly created sObjects without IDs:
This describes Trigger.new in a before insert trigger, not Trigger.old. Trigger.new contains the new records being inserted.
Reference:
Apex Triggers Documentation
Trigger Context Variables


NEW QUESTION # 35
Which two are best practices when it comes to Aura component and application event handling?
Choose 2 answers

  • A. Use component events to communicate actions that should be handled at the application level.
  • B. Reuse the event logic in a component bundle, by putting the logic in the helper.
  • C. Handle low-level events in the event handler and re-fire them as higher-level events.
  • D. Try to use application events as opposed to component events.

Answer: B,C


NEW QUESTION # 36
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