Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 141:

  What are two testing consideration when deploying code from a sandbox to production? Choose 2 answers

  A. 75% of test must execute without failure
  B. 100% of test must execute without failure
  C. Apex code requires 75% coverage
  D. Apex code requires 100% coverage
  B. 100% of test must execute without failure
  C. Apex code requires 75% coverage

• Question 142:

  An org has a single account named `NoContacts' that has no related contacts. Given the query:

  List accounts = [Select ID, (Select ID, Name from Contacts) from Account where Name=`NoContacts'];

  What is the result of running this Apex?

  A. accounts[0].contacts is invalid Apex.
  B. accounts[0].contacts is an empty Apex.
  C. accounts[0].contacts is Null.
  D. A QueryException is thrown.
  B. accounts[0].contacts is an empty Apex.

• Question 143:

  Which two are best practices when it comes to component and application event handling? Choose 2 answers

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

• Question 144:

  Which statement results in an Apex compiler error?

  A. Map lmap = new Map([Select ID from Lead Limit 8]);
  B. Date d1 = Date.Today(), d2 = Date.ValueOf(`2018-01-01');
  C. Integer a=5, b=6, c, d = 7;
  D. List s = List{`a',`b',`c');
  D. List s = List{`a',`b',`c');

• Question 145:

  Which three steps allow a custom SVG to be included in a Lightning web component? Choose 3 answers

  A. Upload the SVG as a static resource. (Missed)
  B. Import the static resource and provide a getter for it in JavaScript. (Missed)
  C. Reference the getter in the HTML template. (Missed)
  D. Reference the import in the HTML template.
  E. Import the SVG as a content asset file.
  A. Upload the SVG as a static resource. (Missed)
  B. Import the static resource and provide a getter for it in JavaScript. (Missed)
  C. Reference the getter in the HTML template. (Missed)

• Question 146:

  Which two automation tools include a graphical designer? Choose 2 answers

  A. Approvals
  B. Flow builder
  C. Process builder
  D. Workflows
  A. Approvals
  B. Flow builder

• Question 147:

  What can used to delete components from production?

  A. A change set deployment with the delete option checked
  B. An ant migration tool deployment with destructivechanges xml file and the components to delete in the package .xml file
  C. A change set deployment with a destructivechanges XML file
  D. An ant migration tool deployment with a destructivechanges XML file and an empty package .xml file
  D. An ant migration tool deployment with a destructivechanges XML file and an empty package .xml file

• Question 148:

  In order to override a standard action with a visualforce page, which attribute must be defined in the tag?

  A. Pagereference
  B. Override
  C. Standardcontroller
  D. Controller
  C. Standardcontroller

• Question 149:

  The Review_c object have a lookup relationship to the job_Application_c object. The job_Application_c object has a master detail relationship up to the position_c object. The relationship is based on the auto populated defaults? What is the recommended way to display field data from the related Review _C records a Visualforce page for a single Position_c record? Select one of the following:

  A. Utilize the Standard Controller for Position_c and cross-object Formula Fields on the Job_Application_c object to display Review_c data.
  B. Utilize the Standard Controller for Position_c and a Controller Extension to query for Review_c data.
  C. Utilize the Standard Controller for Position_c and expression syntax in the Page to display related Review_c through the Job_Applicacion_c inject.
  D. Utilize the Standard Controller for Position_c and cross-object Formula Fields on the Review_c object to display Review_c data.
  B. Utilize the Standard Controller for Position_c and a Controller Extension to query for Review_c data.

• Question 150:

  Before putting an app into production, which step should be taken?

  A. Run the production check feature via the web interface
  B. Switch to a production database
  C. Insure that you have installed a performance introspection add-on
  D. Scale your dynos
  A. Run the production check feature via the web interface