Describe Techniques to Maximize Code Re-Use with Visualforce. PLATFORM-DEVELOPER-II Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is a key trade-off when deciding to create a reusable custom component instead of page-specific code?

   • AReusable components always perform worse than page-specific code
   • BReusable components cannot be tested
   • CReusable components increase initial development effort but reduce long-term maintenance
   • DPage-specific code is always easier to maintain
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2. 2expert · hard

   A developer is designing a Visualforce page that will be used in multiple Salesforce orgs with different customizations. The page needs to display a list of records and a custom action. The developer is deciding whether to use a custom component or write the code directly in the page. What is the most important consideration in this decision?

   • ACustom components are better because they can be reused across pages and orgs, reducing duplication.
   • BWriting the code directly in the page is better because it is simpler to maintain.
   • CCustom components are always better because they are easier to deploy to other orgs.
   • DWriting the code directly in the page is better because it avoids the overhead of component attributes.
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4. 3foundation · easy

   A developer wants to reuse a block of Visualforce markup and its associated controller logic across multiple pages. Which approach best promotes code reuse?

   • APlace all logic in a single controller and reference it from every page
   • BCopy the markup and controller code into each page
   • CUse a single Visualforce page with multiple tabs
   • DCreate a custom component and a reusable controller or extension
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5. 4expert · hard

   A developer is writing a controller that will be used by a Visualforce page and also by a custom component. The controller has a method to get a list of records. The developer wants to ensure the controller is not tightly coupled to a specific page. What should the developer do?

   • AUse the standard controller for the page and a separate controller for the component.
   • BHard-code the query for the specific object the page uses.
   • CWrite the controller to accept parameters for the query and return a generic list of sObjects.
   • DUse a controller extension for both the page and the component.
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6. 5application · medium

   A developer has a custom component 'AddressForm' that collects address fields. The component is used on a page that needs to save the address to a custom object. How should the component communicate the entered address data back to the page's controller?

   • AThe component should define a method that the page calls to retrieve the data.
   • BThe component should use a JavaScript alert to send the data to the page.
   • CThe component should expose an attribute that is bound to a property on the page's controller.
   • DThe component should directly update the database using its own controller.
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