Describe the Considerations When Creating Custom Controllers and Controller Extensions. PLATFORM-DEVELOPER-II Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A developer is extending the standard Account controller with a controller extension. The page has a custom 'Save and New' button that should save the current record and then redirect to a new Account record page. How can the extension implement this?

   • AReturn a PageReference from the constructor to redirect after save.
   • BUse a custom controller instead of an extension to access the standard save() method.
   • COverride the standard controller's save() method to add the redirect logic.
   • DCall the standard controller's save() method from the extension's action method, then return a PageReference to the new record page.
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2. 2foundation · easy

   Which method is used to set parameters on a PageReference before returning it from an action method?

   • AgetParameters()
   • BsetParameters()
   • CsetRedirect()
   • DaddParameter()
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4. 3foundation · easy

   How can a test class verify that a custom controller's action method returns the correct PageReference?

   • ABy checking the page's rendered HTML output
   • BBy using the Visualforce testing framework to simulate a page load
   • CBy using the System.debug() method to log the PageReference
   • DBy calling the action method and asserting the returned PageReference's URL
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5. 4foundation · easy

   What is the effect of defining a method in a controller extension with the same name as a method in the standard controller?

   • ABoth methods are called in sequence.
   • BThe extension method overrides the standard controller method for the page.
   • CA compilation error occurs.
   • DThe standard controller method overrides the extension method.
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6. 5foundation · easy

   What is a recommended performance practice when writing a custom controller that displays a list of records?

   • AUse pagination to limit the number of records returned per request
   • BQuery all records and filter in Apex
   • CUse SOQL FOR UPDATE to lock records
   • DAvoid using SOQL and use getRecord() instead
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