TEST SALESFORCE CRT-450 DUMPS PDF & VALID CRT-450 VCE

Test Salesforce CRT-450 Dumps Pdf & Valid CRT-450 Vce

Test Salesforce CRT-450 Dumps Pdf & Valid CRT-450 Vce

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Salesforce Certified Platform Developer I Sample Questions (Q45-Q50):

NEW QUESTION # 45
Universal Containers has a Visualforce page that displays a table of every Container_c. being ....... Is falling with a view state limit because some of the customers rent over 10,000 containers.
What should a developer change about the Visualforce page to help with the page load errors?

  • A. Use JavaScript remoting with SOQL Offset.
  • B. Implement pagination with an OffsetController.
  • C. Use Lazy loading and a transient List variable.
  • D. Implement pagination with a StandardSetController,

Answer: D

Explanation:
To avoid exceeding the view state limit of 170 KB12, the developer should implement pagination with a StandardSetController. A StandardSetController allows the developer to display a set of records in a Visualforce page with built-in support for pagination, sorting, and filtering3. By using a StandardSetController, the developer can limit the number of records that are displayed and stored in the view state at a time, and provide navigation buttons for the user to access the next or previous set of records.
The other options are not correct because:
* A. Use Lazy loading and a transient List variable. This option is not effective, because lazy loading means that the data is loaded only when it is needed, but it still requires storing the data in the view state. A transient List variable is not included in the view state, but it also means that the data is lost
* after each request and has to be queried again, which can affect performance and consistency.
* B. Use JavaScript remoting with SOQL Offset. This option is not recommended, because JavaScript remoting does not support pagination, sorting, or filtering, and requires additional JavaScript code to handle the callbacks and display the data. SOQL Offset is also limited to 2,000 records, and can cause performance issues when used with large data sets.
* C. Implement pagination with an OffsetController. This option is not optimal, because an OffsetController is a custom controller that uses SOQL Offset to implement pagination. As mentioned above, SOQL Offset has limitations and drawbacks that make it unsuitable for large data sets.
References:
* : Optimize the View State
* : Create More Complex Visualforce Pages with Increased View State Limit
* : StandardSetController Class
* : [Transient Keyword]
* : [SOQL OFFSET Clause]


NEW QUESTION # 46
Universal Containers needs to create a custom user interface component that allows users to enter information about their accounts.
The component should be able to validate the user input before saving the information to the database.
What is the best technology to create this component?

  • A. Visualforce
  • B. Lightning Web Components
  • C. Flow
  • D. VUE JavaScript framework

Answer: B

Explanation:
The best technology to create a custom user interface component that allows users to enter and validate information about their accounts is Lightning Web Components. Lightning Web Components are reusable HTML elements that use modern JavaScript and web standards to create fast and efficient user interfaces on the Lightning Platform. Lightning Web Components can leverage the Lightning Data Service to access and manipulate Salesforce data, and use the Lightning Design System to ensure a consistent look and feel.
Lightning Web Components can also use Apex methods, wire adapters, and wire functions to perform complex logic and validations on the user input before saving it to the database. Flow is a declarative tool that allows users to automate business processes and guide users through screens, but it is not a technology to create custom user interface components. Visualforce is a framework that allows developers to create custom web pages and components using a tag-based markup language and Apex controllers, but it is not as fast, efficient, or modern as Lightning Web Components. VUE JavaScript framework is an external framework that can be used to create reactive user interfaces, but it is not a native Salesforce technology and it requires additional configuration and integration to work with Salesforce data and services. References:
* Lightning Web Components (Salesforce Developer Documentation)
* Build Lightning Web Components (Trailhead Trail)
* Flow Basics (Trailhead Module)
* Visualforce Basics (Trailhead Module)
* VUE JavaScript Framework (Official Website)


NEW QUESTION # 47
The Review_c object has a lookup relationship up to the Job_Application_c object. The Job_Application_c object has a master-detail relationship up to the Position_c object. The relationship field names are based on the auto-populated defaults.
What is the recommended way to display field data from the related Position_c record on a Visualforce page for a single Review_c record?

  • A. Use the Standard Controller for Review_c and expression syntax in the Page to display related Position_c data through the Job_Application_c object.
  • B. Use the Standard Controller for Job_Application_c and cross-object Formula Fields on the Review_c object to display Position_c data.
  • C. Use the Standard Controller for Job_Application_c and a Controller Extension to query for Position_c data.
  • D. Use the Standard Controller for Review_c and cross-object Formula Fields on the Position_c object to display Position_c data.

Answer: B


NEW QUESTION # 48
Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the Apex class, BodyFat, and its method, calculateBodyFat (). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizations outside the ISV's package namespace.
Which approach should a developer take to ensure calculateBodyFat () is accessible outside the package namespace?

  • A. Declare the class as global and use the public access modifier on the method.
  • B. Declare the class and method using the public access modifier.
  • C. Declare the class as public and use the global access modifier on the method.
  • D. Declare the class and method using the global access modifier.

Answer: D

Explanation:
ISV Package Development:
The ISV is developing a managed package.
They have an Apex class BodyFat with a method calculateBodyFat().
Requirement:
Ensure calculateBodyFat() is accessible by consumers outside the package namespace.
Solution:
To allow methods in a managed package to be accessible outside the package namespace, they must be declared as global.
Option B: Declare the class and method using the global access modifier.
Correct Approach.
Global Classes and Methods:
In managed packages, only classes and methods declared as global are accessible outside the package namespace.
Declaration:
global class BodyFat {
global void calculateBodyFat() {
// method implementation
}
}
Important Notes:
Public classes and methods in managed packages are accessible only within the namespace.
Global is required to expose the functionality to subscribers.
The method must also be declared as global to be accessible outside the namespace.
Using public on the method limits its accessibility to within the namespace.
Option C: Declare the class and method using the public access modifier.
Incorrect.
Public classes and methods in a managed package are only accessible within the package's namespace.
They are not accessible to subscribers.
Option D: Declare the class as public and use the global access modifier on the method.
Incorrect.
The class must be declared as global to be accessible outside the namespace.
A public class cannot contain global methods.
Conclusion:
To ensure calculateBodyFat() is accessible outside the package namespace, both the class and method must be declared as global.
Therefore, Option B is the correct choice.
Reference:
Apex Class Access Modifiers
Developing Packages with Apex
Why Other Options are Not Suitable:
Option A: Declare the class as global and use the public access modifier on the method.
Incorrect.


NEW QUESTION # 49
Which three declarative fields are correctly mapped to variable types in Apex? (Choose three.)

  • A. Number maps to Integer.
  • B. Number maps to Decimal.
  • C. TextArea maps to List of type String.
  • D. Date/Time maps to Dateline.
  • E. Checkbox maps to Boolean.

Answer: B,D,E


NEW QUESTION # 50
......

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