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Nowadays everyone is interested in the field of Salesforce because it is growing rapidly day by day. The DEX-450 credential is designed to validate the expertise of candidates. But most of the students are confused about the right preparation material for Salesforce DEX-450 Exam Dumps and they couldn't find real Programmatic Development using Apex and Visualforce in Lightning Experience (DEX-450) exam questions so that they can pass DEX-450 certification exam in a short time with good grades.

Salesforce DEX-450 is a certification exam designed for individuals who have the skills and knowledge of programmatic development using Apex and Visualforce in Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam is intended for individuals who have experience in developing custom applications on the Salesforce platform. Passing DEX-450 Exam is a great way to demonstrate your expertise in programmatic development and showcase your ability to develop customized solutions for your clients.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q170-Q175):

NEW QUESTION # 170
A Next Best Action strategy uses an Enhance element that invokes an Apex method to determine a discount level for a Contact, based on a number of factors.
What is the correct definition of the Apex method?

Answer: D

NEW QUESTION # 171
A developer creates a batch Apex job to update a large number of records, and receives reports of the job timing out and not completing.
What is the first step towards troubleshooting the issue?

A. Decrease the batch size to reduce the load on the system.
B. Check the asynchronous job monitoring page to view the job status and logs.
C. Check the debug logs for the batch job.
D. Disable the batch job and recreate it with a smaller number of records.

Answer: B

Explanation:
When a batch Apex job is timing out and not completing, the first step in troubleshooting is to check the job's status and logs in the Asynchronous Job Monitoring page. This page provides information about all asynchronous Apex jobs, including batch Apex, scheduled Apex, future methods, and queueable Apex.
Option D: Check the asynchronous job monitoring page to view the job status and logs.
Correct Approach.
The Asynchronous Job Monitoring page (also known as the Apex Jobs page) in Salesforce Setup allows developers to see the status of all asynchronous Apex jobs.
By checking this page, the developer can see whether the batch job is still running, failed, or completed.
If the job has failed, the page provides error messages that can help identify the cause of the failure.
This is the first step to determine what is happening with the batch job.
While checking the debug logs can provide detailed information, it is more efficient to first check the job status on the asynchronous job monitoring page.
Debug logs can be large and may not be generated if the job did not execute properly.
After identifying the job's status and any error messages, the developer can then decide if checking debug logs is necessary.
Option C: Decrease the batch size to reduce the load on the system.
Possible Solution, Not First Step.
Decreasing the batch size may help prevent timeouts by processing fewer records at a time.
However, before making changes to the batch job, the developer should first investigate the cause of the timeout.
Option A: Disable the batch job and recreate it with a smaller number of records.
Not Recommended as First Step.
Disabling and recreating the batch job without understanding the issue may not resolve the problem.
It's important to diagnose the issue before making changes.
Conclusion:
The first step towards troubleshooting a batch Apex job that is timing out is to check the asynchronous job monitoring page to view the job's status and any error messages.
This provides immediate insight into what is happening with the job and guides the next steps in troubleshooting.
Reference:
Monitor Asynchronous Apex
Apex Jobs Page
Option B: Check the debug logs for the batch job.
Next Step, Not First Step.

NEW QUESTION # 172
What is the result of the following code?

A. The record will be created and no error will be reported.
B. The record will not be created and no error will be reported.
C. The record will be created and a message will be in the debug log.
D. The record will not be created and a exception will be thrown.

Answer: B

NEW QUESTION # 173
A developer creates a method in an Apex class and needs to ensure that errors are handled properly.What would the developer use? (There are three correct answers.)

A. A try/catch construct
B. .addError()
C. Database.handleException()
D. A custom exception
E. ApexPages.addErrorMessage()

Answer: A,B,D

NEW QUESTION # 174
Which Lightning Web Component custom event property settings enable the event to bubble up the containment hierarchy and cross the Shadow DOM boundary?

A. bubbles: true, composed: true
B. bubbles: false, composed: true
C. bubbles: false, composed: false
D. bubbles: tnje, composed: false

Answer: A

NEW QUESTION # 175
......

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