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Salesforce Certified Platform Developer I (CRT-450) exam is the first step for developers looking to prove their expertise in building custom applications in the Salesforce Platform. Salesforce Certified Platform Developer I certification demonstrates a developer's ability to design, develop, test, and deploy custom applications using Apex and Visualforce. The CRT-450 exam is designed to test a developer's understanding of core development concepts, best practices, and application lifecycle management.

Salesforce CRT-450 certification exam is an essential credential for developers who want to pursue a career in Salesforce development. Salesforce Certified Platform Developer I certification demonstrates that the candidate has the skills and knowledge necessary to design and develop custom applications on the Salesforce platform. It also provides a competitive edge in the job market and opens up new career opportunities. Furthermore, becoming a certified Salesforce developer is a great way to showcase your expertise and commitment to your profession.

Salesforce CRT-450 Exam is designed for professionals who want to validate their knowledge and skills in developing custom applications on the Salesforce Platform. Salesforce Certified Platform Developer I certification exam is also known as the Salesforce Certified Platform Developer I Exam. The CRT-450 Exam tests a candidate's understanding of Salesforce's programming languages, including Apex, Visualforce, and SOQL. Additionally, the exam covers topics such as data modeling, security, and testing methodologies.

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Salesforce Certified Platform Developer I Sample Questions (Q188-Q193):

NEW QUESTION # 188
Which Lightning Web Component custom event property settings enable the event to bubble up the containment hierarchy and cross the Shadow DOM boundary?

Answer: A

Explanation:
To enable a custom event in a Lightning Web Component (LWC) to bubble up the containment hierarchy and cross the Shadow DOM boundary, the event must be dispatched with the properties:
bubbles: true
composed: true
bubbles Property:
When set to true, the event bubbles up through the DOM hierarchy, allowing parent components to listen for the event.
"The bubbles option indicates whether the event bubbles up through the DOM or not."
- Lightning Web Components Developer Guide: Event Propagation
composed Property:
When set to true, the event can pass through the Shadow DOM boundary, allowing components outside the Shadow DOM to receive the event.
"The composed option controls whether the event can propagate across the boundary between the shadow DOM and the regular DOM."
- Lightning Web Components Developer Guide: Event Composition
Example:
// ChildComponent.js
const event = new CustomEvent('myevent', {
bubbles: true,
composed: true,
detail: { /* event data */ }
});
this.dispatchEvent(event);
Why Other Options Are Incorrect:
Option B: bubbles: true, composed: false
The event will bubble up within the Shadow DOM but will not cross the Shadow DOM boundary.
Option C: bubbles: false, composed: false
The event will neither bubble nor cross the Shadow DOM boundary, limiting its propagation.
Option D: bubbles: false, composed: true
The event will not bubble up the containment hierarchy but can cross the Shadow DOM boundary, which is insufficient for the requirement.
Conclusion:
Setting both bubbles and composed to true ensures the event bubbles up through the component hierarchy and crosses the Shadow DOM boundary.


NEW QUESTION # 189
A developer creates a custom controller and a custom Visualforce page by using the code block below:
public class MyController {
public String myString {
get {
if (myString == null) { myString = 'a';
}
return myString;
} private set; } public string getMyString (){
return 'getMyString';
} public string getStringMethod () {
if (myString == null) {
myString = 'b';
} return myString;
}
} <apex:page controller = "MyController"> {!StringMethod}, {!myString}, {!myString} </apex:page> What can the user expect to see when accessing the custom page?

Answer: C


NEW QUESTION # 190
Assuming that name is a String obtained by an tag on a Visualforce page, which two SOQL queries performed are safe from SOQL injection? Choose 2 answers A) B)

C)
D)

Answer: B,D

Explanation:
Option B:Escapes single quotes usingString.escapeSingleQuotes, protecting against SOQL injection.
Option C:Uses bind variables, which are inherently safe from SOQL injection.
Reference:SOQL and SOSL Injection Prevention


NEW QUESTION # 191
Account acct = {SELECT Id from Account limit 1}; Given the code above, how can a developer get the type of object from acct?

Answer: D


NEW QUESTION # 192
Which two statements can a developer use to throw a custom exception of type MissingFieldValueException? Choose 2 answers.

Answer: B,D


NEW QUESTION # 193
......

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