Exam Certified Platform Developer II topic 1 question 6 discussion

Actual exam question from Salesforce's Certified Platform Developer II

Question #: 6
Topic #: 1

[All Certified Platform Developer II Questions]

A Visualforce page contains an industry select list and displays a table of Accounts that have a matching value in their Industry field.
<apex:selectList value="{!selectedIndustry}">
<apex:selectOptions values="{!industries}"/>
</apex:selectList>
When a user changes the value in the industry select list, the table of Accounts should be automatically updated to show the Accounts associated with the selected industry.
What is the optimal way to implement this?

A. Add an <apex:actionFunction> within the <apex:selectOptions>.
B. Add an <apex:actionFunction> within the <apex:selectList>.
C. Add an <apex:actionSupport> within the <apex:selectList>.
D. Add an <apex:actionSupport> within the <apex:selectOptions>.

Show Suggested Answer

Suggested Answer: B 🗳️

by Rocky_sfdc at Jan. 22, 2021, 6:51 a.m.

Comments

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Rocky_sfdc

Highly Voted 2 years, 11 months ago

C is correct

upvoted 16 times

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ksar4u

Most Recent 2 months, 3 weeks ago

Selected Answer: B

apex:actionFunction can invoke a JS function. apex:actionSupport is for a VF component.

upvoted 1 times

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iValRV

8 months, 2 weeks ago

Selected Answer: C

C is correct

upvoted 1 times

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iValRV

8 months, 2 weeks ago

C is correct

upvoted 1 times

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Saranraj

11 months, 3 weeks ago

Selected Answer: C

C is correct

upvoted 1 times

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levian

1 year, 3 months ago

C is correct

upvoted 1 times

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doggs119

2 years ago

This is actually correct. A component that provides support for invoking controller action methods directly from JavaScript code using an AJAX request. An <apex:actionFunction> component must be a child of an <apex:form> component. Unlike <apex:actionSupport>, which only provides support for invoking controller action methods from other Visualforce components, <apex:actionFunction> defines a new JavaScript function which can then be called from within a block of JavaScript code. Also A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as a button click or mouseover. Use this component to get user input for a controller method that does not correspond to a field on an sObject. Only <apex:inputfield> and apex:outfield can be used with sObject fields. In this instance, it does correspond to a sobject so B is correct

upvoted 3 times

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NPW89

2 years, 1 month ago

apex:actionSupport A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as a button click or mouseover.

upvoted 2 times

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