PD1 Visualforce Pages 2

Question 1

Which Visualforce component is used to display a list of records in a table format with built-in sorting and pagination?

Accepted Answer

<apex:pageBlockTable>

Answer

<apex:pageBlockTable> renders a table inside a pageBlock with automatic Salesforce styling, sorting, and pagination support.

Question 2

What is the purpose of the 'rendered' attribute in Visualforce components?

Accepted Answer

It conditionally includes or excludes the component from the HTML output

Answer

The 'rendered' attribute accepts a Boolean expression; when false, the component is not emitted in the HTML response at all.

Question 3

Which attribute on <apex:page> disables the standard Salesforce page header?

Accepted Answer

showHeader='false'

Answer

Setting showHeader='false' on <apex:page> removes the standard Salesforce header from the rendered page.

Question 4

In Visualforce, how do you reference a static resource named 'myJS' in a <script> tag?

Accepted Answer

{!URLFOR($Resource.myJS)}

Answer

URLFOR($Resource.myJS) generates the correct versioned URL for the static resource named myJS.

Question 5

What happens when you set 'readOnly="true"' on an <apex:page>?

Accepted Answer

The page can query up to 1 million rows but cannot perform DML

Answer

readOnly='true' increases the SOQL row limit to 1 million but prevents any DML operations on the page.

(PD1) Salesforce Certified Platform Developer 1 Practice Test