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100% Pass Quiz Salesforce DEX-450 Marvelous Valid Study Materials

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Salesforce DEX-450 exam consists of 60 multiple-choice questions that are to be completed in 120 minutes. DEX-450 exam is administered online and can be taken from any location. The passing score for this certification exam is 68%. It is recommended that candidates have at least 3-6 months of experience in programmatic development and have completed the Salesforce Certified Platform Developer I certification before taking DEX-450 exam.

To prepare for the Salesforce DEX-450 Exam, developers should have a strong foundation in Apex programming and Visualforce development. They should also have experience in building custom applications using Lightning Components and integrating them with external systems. Developers can use various resources such as Salesforce Trailhead, Apex Developer Guide, and Visualforce Developer Guide to prepare for the exam.

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Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q114-Q119):

NEW QUESTION # 114
A developer is creating a page that allows users to create multiple Opportunities. The developer is asked to verify the current user's default } | Opportunity record type, and set certain default values based on the record type before inserting the record.
How can the developer find the current user's default record type? ns

A. Use the Schema.userlnfo.Opportunity.getDefaultRecordType() method. < Create the opportunity and check the opportunity.recordType before inserting, which will have the record ID of the current Dal user's default record type.
B. Use Opportunity. SObjectType.getDescribe().getRecordTypelnfos() to get a list of record types, and iterate through them until [ J isDefaultRecordTypeMapping() is true. Pencil & Paper |
C. Query the Profile where the ID equals userInfo.getProfileID() and then use the profile.Opportunity.getDefaultRecordType() | |method. ] |

Answer: B

NEW QUESTION # 115
Which three resources in a Lightning Component Bundle can contain JavaScript functions? Choose 3

A. Controller
B. Style
C. Design
D. Helper
E. Renderer

Answer: A,D,E

NEW QUESTION # 116
Which type of code represents the Model in the MVC architecture when using Apex and Visualforce pages?

A. A list of Account records returned from a Controller Extension method
B. A Controller Extension method that uses SOQL to query for a list of Account records
C. Custom JavaScript that processes a list of Account records
D. A Controller Extension method that saves a list of Account records

Answer: A

NEW QUESTION # 117
How many Accounts will be inserted by the following block of code?

A. 0
B. 1
C. 2
D. 3

Answer: D

NEW QUESTION # 118
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 and method using the global access modifier.
B. Declare the class as public and use the global access modifier on the method.
C. Declare the class and method using the public access modifier.
D. Declare the class as global and use the public access modifier on the method.

Answer: A

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 # 119
......

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