Master 2023 Latest The Questions Salesforce Developer and Pass DEX-450 Real Exam!
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Average Salary for Salesforce DEX-450 Exam Certified Professional
Salesforce administrator roles are in great demand nowadays. The average salaries of Salesforce DEX-450 exam Certified professional in:
- England - 70,400 POUND
- United State - 105,100 USD
- Europe - 72,300 Euro
- India - 16,42,330 INR
NEW QUESTION 27
What should a developer use to fix a Lightning web component bug in a sandbox?
- A. VS Code
- B. Execute Anonumous
- C. Force.com IDE
- D. Developer Console
Answer: A
NEW QUESTION 28
A developer created a weather app that contains multiple Lightning web components.
One of the components, called Toggle, has a toggle for Fahrenheit or Celsius units. Another component, called Temperature, displays the current temperature in the unit selected in the Toggle component When a user toggles from Fahrenheit to Celsius or vice versa in the Toggle component, the information must be sent to the Temperature component so the temperature can be converted and displayed.
What is the recommend way to accomplish this?
- A. Use Lightning Message Service to communicate between the component.
- B. Use Lightning Message Service to communicate between the components.
- C. The Toggle component should call a method in the Temperature component.
- D. Create a custom event to handle the communicate between the components.
Answer: D
NEW QUESTION 29
A developer created a helper class with a method that can be called from Visualforce pages, web services, triggers, and of even anonymous code. When the method is called from a trigger, the developer needs to execute logic that should not be executed If the method Is called from anywhere else. How can the developer determine if the code Is executed in a trigger context?
- A. Use the executeOnTrigger annotation on the method definition.
- B. Check if System.executionContext =='Trigger'.
- C. Check if Trigger.newMap !=null.
- D. Check if Trigger.isExecuting ==true
Answer: D
NEW QUESTION 30
An org has an existing Flow that creates an Opportunity with an Update Records element. A developer update the Flow to also create a Contact and store the created Contact's ID on the Opportunity.
Which update should the developer make in the Flow?
- A. Add a new Update Records element.
- B. Add a new Create Records element.
- C. Add a new Quick Action element(of type Create).
- D. Add a new Get Records element.
Answer: B
NEW QUESTION 31
Refer to the following Apex code:
What is the value of x when it is written to the debug log?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 32
A developer working on a time management application wants to make total hours for each timecard available to applications users. A timecard entry has a Master-Detail relationship to a timecard. Which approach should the developer use to accomplish this declaratively?
- A. A Process Builder process that updates a field on the timecard entry is created.
- B. A Roll-up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard.
- C. An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field.
- D. A visualforce page that calculates the total number of hours for a timecard and displays it on the page.
Answer: B
NEW QUESTION 33
How can a developer retrieve all Opportunity record type labels to populate a list collection?Choose 2 answers
- A. Obtain describe object results for the Opportunity objct.
- B. Write a for loop that extracts values from the Opportunity.RecordType.Name field.
- C. Use the global variable $RecordType and extract a list from the map.
- D. Write a SOQL for loop that iterates on the RecordType object.
Answer: A,D
NEW QUESTION 34
What is the debug output of the following Apex code?
Decimal theValue;
System.debug (theValue);
- A. 0
- B. null
- C. Undefined
- D. 0.0
Answer: B
NEW QUESTION 35
A developer wants to invoke on outbound message when a record meets a specific criteria.
Which three features satisfy this use case?
Choose 3 answer
- A. Visual Workflow can be used to check the record criteria and send an outbound message without Apex Code.
- B. Process builder can be used to check the record criteria and send an outbound messagewithout Apex Code.
- C. Process builder can be used to check the record criteria and send an outbound message with Apex Code.
- D. Approval Process has the capacity to check the record criteria and send an outbound message without Apex Code
- E. workflows can be used to check the record criteria and send an outbound message.
Answer: C,D,E
NEW QUESTION 36
Consider the following code snippet:
Given the multi-tenant architecture of the Salesforce platform, what Is a best practice a developer should Implement and ensure successful execution of the method?
- A. Avoid using variables as query filters.
- B. Avoid executing queries without a limit clause.
- C. Avoid performing queries inside for loops.
- D. Avoid returning an empty List of records.
Answer: C
NEW QUESTION 37
Which feature allows a developer to create test records for use in test classes?
- A. Webservicetests
- B. Static resources
- C. Documents
- D. Httpcalloutmocks
Answer: A
NEW QUESTION 38
An after trigger on the account object performs a DML update operation on all of the child opportunities of an account. There are no active triggers on the opportunity object, yet a "maximum trigger depth exceeded" error occurs in certain situation. Which two reasons possibly explain the account trigger firing recursively? choose 2 answers
- A. Changes are being made to the account during criteria based sharing evaluation
- B. Changes to opportunities are causing roll-up summary fields to update on the account
- C. Changes to opportunities are causing cross-object workflow field updates to be made on the account
- D. Changes are being made to the account during an unrelated parallel save operation
Answer: C
NEW QUESTION 39
Which statement is true about developing in a multi-tenant environment?
- A. Governor limits prevent apex from impactiong the performance of multiple tenants on the same instance
- B. Global apex classes can be referenced from multiple tenants on the same instance
- C. Org-level data security controls which users can see data from multiple tenants on the same instance
- D. Apex sharing controls access to records fomr multiple tenants on the same instance
Answer: A
NEW QUESTION 40
A developer wants to get access to the standard price book in the org while writing a test class that covers an OpportunityLineItem trigger. Which method allows access to the price book?
- A. Use Test.loadData ( )and a static resource to load a standard price book
- B. Use Test,getStandardPricebookid ( ) to get the standard price book ID.
- C. Use @IsTest (SeeAllData=True) and delete the existing standard price book
- D. Use @TestVisible to allow the test method to see the standard price book.
Answer: B
NEW QUESTION 41
What is the value of x after the code segment executes?String x = 'A';Integer i = 10;if ( i < 15 ) {i = 15;x = 'B';} else if ( i < 20 ) {x = 'C';} else {x = 'D'; }
- A. B
- B. A
- C. D
- D. C
Answer: A
NEW QUESTION 42
Which two are best practices when it comes to component and application event handling? (Choose two.)
- A. Reuse the event logic in a component bundle, by putting the logic in the helper.
- B. Use component events to communicate actions that should be handled at the application level.
- 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: A,C
NEW QUESTION 43
Where can a developer identify the time taken by each process in a transaction using Developer Console log inspector?
- A. Timeline tab under Execution Overview panel
- B. Performance Tree tab under Stack Tree panel
- C. Execution Tree tab under Stack Tree panel
- D. Save Order tab under Execution Overview panel
Answer: A
NEW QUESTION 44
A developer is creating a test coverage for a class and needs to insert records to validate functionality. Which method annotation should be used to create records for every method in the test class?
- A. @PreTest
- B. @TestSetup
- C. @isTest(SeeAllData=True)
- D. @BeforeTest
Answer: B
NEW QUESTION 45
A developer observes that an Apex test method fails in the Sandbox. To identify the issue, the developer copies the code inside the test method and executes it via the Execute Anonymous tool in the Developer Console. The code then executes with no exceptions or errors. Why did the test method fail in the sandbox and pass in the Developer Console?
- A. The test method is calling an @future method.
- B. The test method relies on existing data in the sandbox.
- C. The test method has a syntax error in the code.
- D. The test method does not use System.runAs to execute as a specific user.
Answer: B
NEW QUESTION 46
What is an important consideration when developing in a multi-tenant environment?
- A. Unique domain names take the place of namespaces for code developed for multiple orgs on multiple instances.
- B. Org-wide data security determines whether other tenants can see data in multiple orgs on the same instance.
- C. Governor limits prevent tenants from impacting performance in multiple orgs on the same instance.
- D. Polyglot persistence provides support for a global, multilingual user base in multiple orgs on multiple instances.
Answer: C
NEW QUESTION 47
Which three statements are true regarding custom exceptions in Apex? (Choose three.)
- A. A custom exception class cannot contain member variables or methods.
- B. A custom exception class can extend other classes besides the Exception class.
- C. A custom exception class must extend the system Exception class.
- D. A custom exception class name must end with "Exception".
- E. A custom exception class can implement one or many interfaces.
Answer: B,D,E
NEW QUESTION 48
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