DEX-450 UPDATED DEMO & VALID DEX-450 EXAM PREP

DEX-450 Updated Demo & Valid DEX-450 Exam Prep

DEX-450 Updated Demo & Valid DEX-450 Exam Prep

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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.

Salesforce DEX-450 Certification Exam is designed for individuals who are interested in demonstrating their knowledge and skills in programmatic development using Apex and Visualforce in Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification is ideal for developers who want to showcase their ability to design and develop custom applications on the Salesforce platform using Apex and Visualforce.

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Salesforce DEX-450 exam assesses the candidate's knowledge of various topics such as Apex programming language, Visualforce pages, Lightning components, data management, and testing. DEX-450 Exam consists of 60 multiple-choice questions that need to be completed in 105 minutes. Candidates need to score a minimum of 65% to pass the exam and earn the certification.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q124-Q129):

NEW QUESTION # 124
A developer considers the following snippet of code:

Based an this code, what is the value of x?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A


NEW QUESTION # 125
A developer is working on a project to import data from an external system into Salesforce. The data contains sensitive information that should not be visible to all users in Salesforce.
What should the developer do to ensure that the data is secure?

  • A. Use a third-party tool to encrypt the sensitive data before importing it into Salesforce.
  • B. Use the Data Import Wizard to import the data arid set up field-level security to restrict access to sensitive fields.
  • C. Use the Salesforce CLI to import the data and set up user permissions to restrict access to sensitive data.
  • D. Use the Apex Data Loader to import the into and write Apex code to handle security and access control.

Answer: D


NEW QUESTION # 126
How would a developer change the field type of a custom field on the Account object from string to an integer?

  • A. Mate the change in the declarative UI, then update the field type to an integer field in the Apex code.
  • B. Make the changes in the developer console, and then the change will automatically be reflected in the Apex code.
  • C. Make the change in the declarative UI, an then the change will automatically be reflected in the Apex code.
  • D. Remove all references in the code, make the change in the declarative UI, and restore the references with the new type.

Answer: D


NEW QUESTION # 127
Universal Containers implemented a private sharing model for the Account object. A custom Account search tool was developed with Apex to help sales representatives find accounts that match multiple criteria they specify. Since its release, users of the tool report they can see Accounts they do not own.
What should the developer use to enforce sharing permissions for the currently logged in user while using the custom search tool?

  • A. Use the without sharing keyword on the class declaration.
  • B. Use the UserInfo Apex class to filter all SOQL queries to returned records owned by the logged-in user.
  • C. Use the with sharing keyword on the class declaration.
  • D. Use the schema describe calls to determine if the logged-in user has access to the Account object,

Answer: C

Explanation:
Since users can see Accounts they do not own in a private sharing model, the custom Apex code is likely not enforcing sharing rules. To enforce sharing permissions, the developer should use the with sharing keyword on the class declaration.
with sharing Keyword: This enforces the sharing rules of the current user, ensuring that the Apex class respects the user's record-level access permissions.
"Use the with sharing keyword when declaring a class to enforce the sharing rules that apply to the current user."
- Apex Developer Guide: Using the with sharing or without sharing Keywords Private Sharing Model: In a private sharing model, users should only see records they own or have been shared with them.
"Private: Only the record owner and users above that role in the hierarchy can view, edit, and report on those records."
- Salesforce Help: Organization-Wide Sharing Defaults
Why Not Other Options:
A . Use the schema describe calls to determine if the logged-in user has access to the Account object: Schema describe calls check for object-level access, not record-level sharing.
"Schema describe information provides metadata about object and field properties, but it doesn't enforce record-level access."
- Apex Developer Guide: Schema Namespace
C . Use the without sharing keyword on the class declaration: This runs the class in system context, ignoring sharing rules, which is the opposite of what's needed.
"Classes declared as without sharing or those that do not specify a keyword default to without sharing and don't enforce the sharing rules of the current user."
- Apex Developer Guide: Using the with sharing or without sharing Keywords D . Use the UserInfo Apex class to filter all SOQL queries to return records owned by the logged-in user: Manually filtering queries is error-prone and not a best practice when with sharing can enforce sharing automatically.
"Avoid hardcoding user or profile IDs and using the UserInfo class to enforce security. Instead, use declarative security features."
- Apex Developer Guide: Enforcing Security in Apex
Conclusion: By declaring the class with with sharing, the Apex code respects the user's sharing rules, ensuring that users only see Accounts they have access to.


NEW QUESTION # 128
Universal Hiring uses Salesforce to capture job applications. A salesforce administrator created two custom objects; Job__c acting as the maste object, Job _Application__c acting as the detail.
Within the Job ___c object, a custom multi-select picklist, preferred Locations __c, contains a list of approved states for the position. Each Job_Application__c record relates to a Contact within the system through a master-detail relationship.
Recruiters have requested the ability to view whether the Contact's Mailing State value matches a value selected on the Preferred_Locations__c field, within the Job_Application__c record. Recruiters would like this value to be kept in sync if changes occur to the Contact's Mailing State.
What is the recommended tool a developer should use to meet the business requirement?

  • A. Record-triggered flow
  • B. Roll-up summary field
  • C. Formula field
  • D. Apex trigger

Answer: A


NEW QUESTION # 129
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