Given a Set of Requirements, Describe the Process for Designing Lightning Components. PLATFORM-DEVELOPER-II Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   A developer is designing a component that has a complex UI with multiple sections, each with its own logic and styling. What is the recommended component architecture?

   • AUse a standalone component for each section and do not compose them
   • BUse a single component with all sections in one markup file
   • CUse an application event to coordinate all sections within the same component
   • DBreak the UI into smaller, composed components, each responsible for a section
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   A requirement states: 'Users must be able to view and edit the Account Name and Phone fields on a record page.' What is the MOST relevant design consideration for this requirement?

   • AThe component must use a custom Apex controller to handle all data operations
   • BThe component must be responsive on mobile devices
   • CThe component must include the necessary fields and allow editing, which may be achieved with a standard record form or Lightning Data Service
   • DThe component must use a component event to notify other components of changes
   Reveal Solution Discussion Select an answer first
4. 18expert · hard

   A Lightning component has a parent and a child component. The child component modifies a record and needs to notify the parent to refresh its data. The parent uses a wire adapter to load data. What is the best way to handle this?

   • AUse a callback function passed from the parent to the child to trigger a refresh.
   • BUse a wire adapter in the child to load the same data and rely on automatic refresh.
   • CUse an application event from the child to the parent, and in the parent's handler, call refreshApex.
   • DUse a component event from the child to the parent, and in the parent's handler, call a method to refresh the wire adapter.
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   A developer is designing a Lightning component that displays a list of records and allows users to select one to view details. Which design consideration is MOST important to address during requirements analysis?

   • AThe most efficient way to minimize server round-trips
   • BWhether the component should be a standalone or composed component
   • CThe data fields needed for the list and the detail view, and the user actions required
   • DThe choice between using a component event or an application event
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A developer is building a Lightning component that displays a list of records and allows inline editing. The component uses Lightning Data Service to load and save records. The team is concerned about performance and wants to minimize server round-trips. Which approach is best?

   • ALoad the records with getRecords and save all changes with a single saveRecords call.
   • BUse lightning-record-edit-form for each record to handle loading and saving.
   • CUse a wire adapter to load the records and use a single Apex method to save all changes at once.
   • DLoad all records with a single getRecords call and save each record individually with saveRecord.
   Reveal Solution Discussion Select an answer first