Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 401:

  Universal Containers wants Opportunities to be locked from editing when reaching the Closed/Won stage. Which two strategies should a developer use to accomplish this? (Choose two.)

  A. Use a Visual Workflow.

  B. Use a validation rule.

  C. Use the Process Automation Settings.

  D. Use a Trigger.

  Correct Answer: BD

• Question 402:

  A developer wants to override a button using Visualforce on an object. What is the requirement?

  A. The controller or extension must have a PageReference method.

  B. The standardController attribute must be set to the object.

  C. The action attribute must be set to a controller method.

  D. The object record must be instantiated in a controller or extension.

  Correct Answer: B

• Question 403:

  Which two platform features align to the Controller portion of MVC architecture? (Choose two.)

  A. Process Builder actions

  B. Workflow rules

  C. Standard objects

  D. Date fields

  Correct Answer: AB

• Question 404:

  How should a developer prevent a recursive trigger?

  A. Use a "one trigger per object" pattern.

  B. Use a static Boolean variable.

  C. Use a trigger handler.

  D. Use a private Boolean variable.

  Correct Answer: D

• Question 405:

  Which two strategies should a developer use to avoid hitting governor limits when developing in a multi-tenant environment? (Choose two.)

  A. Use collections to store all fields from a related object and not just minimally required fields.

  B. Use methods from the "Limits" class to monitor governor limits.

  C. Use SOQL for loops to iterate data retrieved from queries that return a high number of rows.

  D. Use variables within Apex classes to store large amounts of data.

  Correct Answer: BC

• Question 406:

  What is the result of the debug statements in testMethod3 when you create test data using testSetup in below code?

  

  A. Account0.Phone=333-8781, Account1.Phone=333-8780

  B. Account0.Phone=888-1515, Account1.Phone=999-2525

  C. Account0.Phone=333-8780, Account1.Phone=333-8781

  D. Account0.Phone=888-1515, Account1.Phone=999-1515

  Correct Answer: C

• Question 407:

  A developer encounters APEX heap limit errors in a trigger.

  Which two methods should the developer use to avoid this error? (Choose two.)

  A. Use the transient keyword when declaring variables.

  B. Query and store fields from the related object in a collection when updating related objects.

  C. Remove or set collections to null after use.

  D. Use SOQL for loops instead of assigning large queries results to a single collection and looping through the collection.

  Correct Answer: AD

• Question 408:

  Which two number expressions evaluate correctly? (Choose two.)

  A. Double d = 3.14159;

  B. Integer I = 3.14159;

  C. Decimal d = 3.14159;

  D. Long l = 3.14159;

  Correct Answer: AC

• Question 409:

  How can a developer set up a debug log on a specific user?

  A. It is not possible to setup debug logs for users other than yourself.

  B. Ask the user for access to their account credentials, log in as the user and debug the issue.

  C. Create Apex code that logs code actions into a custom object.

  D. Set up a trace flag for the user, and define a logging level and time period for the trace.

  Correct Answer: D

• Question 410:

  Which three options allow a developer to use custom styling in a Visualforce page? (Choose three.)

  A. tag

  B. Inline CSS

  C. tag

  D. tag

  E. A static resource

  Correct Answer: ABE