Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 161:

  A developer created a visualforce page using a custom controller that calls an apex helper class. A method in the helper class hits a governor limit. what is the result of the transaction?

  A. The helper class creates a savepoint and continues
  B. All changes in the transaction are rolled back
  C. All changes made by the custom controller are saved
  D. The custom controller calls the helper class method ag
  C. All changes made by the custom controller are saved

• Question 162:

  What are two characteristics of partial copy sandboxes versus full sandboxes? Choose 2 answers

  A. Includes a subset of metadata
  B. Requires a sandbox template
  C. Supports more frequent refreshes
  D. Provides more data record storage
  A. Includes a subset of metadata
  C. Supports more frequent refreshes

• Question 163:

  A developer needs an Apex method that can process Account or Contact records. Which method signature should the developer use?

  A. Public void doWork(Record theRecord)
  B. Public void doWork(sObject theRecord)
  C. Public void doWork(Account Contact)
  D. Public void doWork(Account || Contatc)
  B. Public void doWork(sObject theRecord)

• Question 164:

  Which three data types can be returned from an SOQL statement?

  A. Boolean
  B. List of objects
  C. String
  D. Integer
  E. Single object
  B. List of objects
  D. Integer
  E. Single object

• Question 165:

  A developer needs to create a Visualforce page that displays Case data. The page will be used by both support reps and support managers. The Support Rep profile does not allow visibility of the Customer_Satisfaction__c field, but the Support Manager profile does.

  How can the developer create the page to enforce Field Level Security and keep future maintenance to a minimum?

  A. Create one Visualforce Page for use by both profiles.
  B. Use a new Support Manager permission set.
  C. Create a separate Visualforce Page for each profile.
  D. Use a custom controller that has the with sharing keywords.
  D. Use a custom controller that has the with sharing keywords.

• Question 166:

  A developer creates a new Visualforce page and Apex extension, and writes test classes that exercise 95% coverage of the new Apex extension.Change set deployment to production fails with the test coverage warning: "Average test coverage across all Apex classes and triggers is 74%, at least 75% test coverage is required."

  What can the developer do to successfully deploy the new Visualforce page and extension?

  A. Create test classes to exercise the Visualforce page markup.
  B. Select "Disable Parallel Apex Testing" to run all the tests.
  C. Add test methods to existing test classes from previous deployments.
  D. Select "Fast Deployment'' to bypass running all the tests.
  C. Add test methods to existing test classes from previous deployments.

• Question 167:

  From which 2 locations can a developer determine the overall code coverage for a sandbox?

  A. The test suite run panel of the developer console
  B. The apex classes setup page
  C. The apex test execution page
  D. The tests tab of the developer console
  B. The apex classes setup page
  D. The tests tab of the developer console

• Question 168:

  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.
  B. Use a validation rule.
  D. Use a Trigger.

• Question 169:

  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. D
  B. A
  C. B
  D. C
  C. B

• Question 170:

  How are debug levels adjusted In the Developer Console?

  A. Under the Settings menu > Trace Settings..., click Change DebugLevel
  B. Under the Edit menu, dick Change DebugLevels
  C. Under the Logs tab, click Change in the DebugLevels panel
  D. Under the Debug menu > Change Log Levels..., click Add/Change in the DebugLevel Action column
  D. Under the Debug menu > Change Log Levels..., click Add/Change in the DebugLevel Action column