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Salesforce CRT-450 certification exam is a multiple-choice exam that consists of 60 questions that must be answered within 105 minutes. CRT-450 exam covers various topics, including Apex programming language, Visualforce pages, Salesforce data model, security, and testing. CRT-450 Exam is designed to evaluate the candidate's skills and knowledge in developing custom applications using the Salesforce platform.
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Salesforce Certified Platform Developer I Sample Questions (Q143-Q148):
NEW QUESTION # 143
A developer created a new trigger that inserts a Task when a new Lead is created. After deploying to production, an outside integration chat reads task records is periodically reporting errors.
Which change should the developer make to ensure the integration is not affected with minimal impact to business logic?
- A. Deactivate the trigger before the integration runs.
- B. Use the Database method with all or None set to false
- C. Use a try-catch block after the insert statement.
- D. Remove the Apex class from the integration user's profile.
Answer: D
NEW QUESTION # 144
A developer runs the following anonymous code block:List<Account> acc = [SELECT Id FROM Account LIMIT 10];Delete acc;Database.emptyRecycleBin(acc);system.debug(Limits.getDMLStatements()+ ', '
+Limits.getLimitDMLStatements());What is the result?
- A. 150, 11
- B. 2, 150
- C. 150, 2
- D. 11, 150
Answer: B
NEW QUESTION # 145
The following automations already exist on the Account object;
* A workflow rule that updates a field when a certain criteria is met
* A custom validation on a field
* A How that updates related contact records
A developer created a trigger on the Account object.
What should the developer consider while testing the trigger code?
- A. Workflow rules will fire only after the trigger has committed all DML operations to the database.
- B. A workflow rule field update will cause the custom validation to run again.
- C. The trigger may fire multiple times during a transaction.
- D. The flow may be launched multiple times.
Answer: C
Explanation:
A trigger may fire multiple times during a transaction because of the order of execution of different automation tools in Salesforce. According to the documentation, the order of execution is as follows:
* Executes all before triggers.
* Saves the record to the database, but doesn't commit yet.
* Executes all after triggers.
* Executes assignment rules.
* Executes auto-response rules.
* Executes workflow rules.
* If there are workflow field updates, updates the record again.
* If the record was updated with workflow field updates, fires before update triggers and after update triggers one more time (and only one more time), in addition to standard validations. Custom validation rules, duplicate rules, and escalation rules are not run again.
* Executes processes and flows launched via processes and flow trigger workflow actions. When a process or flow executes a DML operation, the affected record goes through the save procedure.
* Executes escalation rules.
* Executes entitlement rules.
* If the record contains a roll-up summary field or is part of a cross-object workflow, performs calculations and updates the roll-up summary field in the parent record. Parent record goes through save procedure.
* If the parent record is updated, and a grandparent record contains a roll-up summary field or is part of a cross-object workflow, performs calculations and updates the roll-up summary field in the grandparent record. Grandparent record goes through save procedure.
* Executes Criteria Based Sharing evaluation.
* Commits all DML operations to the database.
* Executes post-commit logic, such as sending email.
As you can see, there are several steps that can cause the record to go through the save procedure again, which will fire the triggers again. Therefore, the developer should consider this possibility and write the trigger code accordingly to avoid unwanted side effects or recursion. For example, the developer can use static variables to track the trigger invocation or use bulkified patterns to handle collections of records efficiently.
References:
* 1: Order of Execution (Apex Developer Guide)
NEW QUESTION # 146
Since Aura application events follow the traditional publish-subscribe model, which method is used to fire an event?
- A. FireEvent()
- B. SegdetesEvent (}
- C. fire()
- D. emit()
Answer: C
NEW QUESTION # 147
Universal Containers recently transitioned from Classic to Lighting Experience. One of its business processes requires certain value from the opportunity object to be sent via HTTP REST callout to its external order management system based on a user-initiated action on the opportunity page. Example values are as follow
* Name
* Amount
* Account
Which two methods should the developer implement to fulfill the business requirement? (Choose 2 answers)
- A. Create a Lightning component that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.
- B. Create a Visualforce page that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.
- C. Create a Process Builder on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity is updated.
- D. Create an after update trigger on the Opportunity object that calls a helper method using
@Future(Callout=true) to perform the HTTP REST callout.
Answer: A,B
Explanation:
The developer should implement either a Lightning component or a Visualforce page that performs the HTTP REST callout, and use a Lightning Action or a Visualforce quick action to expose the component on the Opportunity detail page. These methods allow the developer to create a user interface that can capture the user input and trigger the callout based on a user-initiated action. The Lightning component or the Visualforce page can use the Apex controller to invoke the HTTP callout using the built-in HTTP classes, such as HttpRequest, HttpResponse, and Http. The Lightning Action or the Visualforce quick action can be added to the page layout of the Opportunity object and configured to display the component in a modal dialog or a panel.
Creating a Process Builder or an after update trigger to perform the HTTP REST callout is not a suitable method for this business requirement, because these methods do not provide a user interface or a user-initiated action. The Process Builder or the trigger would execute the callout whenever the Opportunity is updated, regardless of the user input or intention. This could result in unnecessary or unwanted callouts, as well as hitting the governor limits for callouts.
References: Invoking HTTP Callouts, Configuring an HTTP Callout Action, Create HTTP Callout for Salesforce Flow, Invoking Callouts Using Apex, [Prepare for Your Salesforce Platform Developer I Credential]
NEW QUESTION # 148
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