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Salesforce CRT-450, also known as Salesforce Certified Platform Developer I, is a certification exam designed for professionals who want to showcase their skills and knowledge in building custom applications on the Salesforce platform. Salesforce Certified Platform Developer I certification is intended for developers who are already familiar with the Salesforce platform and have experience building custom applications using Apex and Visualforce.

Salesforce CRT-450 Certification Exam consists of approximately 60 multiple-choice questions that should be completed within 105 minutes. Salesforce Certified Platform Developer I certification exam evaluates the candidate's ability to develop custom applications using Apex and Visualforce, and to customize the Salesforce platform to meet the unique needs of various businesses. Salesforce Certified Platform Developer I certification exam also tests the candidate's ability to design and implement various Salesforce features, such as data modeling, security, and integration.

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Salesforce Certified Platform Developer I Sample Questions (Q53-Q58):

NEW QUESTION # 53
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. Implement pagination with an OffsetController.
B. Implement pagination with a StandardSetController,
C. Use JavaScript remoting with SOQL Offset.
D. Use Lazy loading and a transient List variable.

Answer: B

Explanation:
The correct answer is D because it uses the StandardSetController class, which provides built-in pagination support for Visualforce pages. The StandardSetController can be initialized with a list of sObjects, a SOQL statement, or the ID of a filter. It also provides methods to navigate through the pages of data, such as first(), last(), next(), and previous(). By using the StandardSetController, the developer can avoid hitting the view state limit, which is 135 KB for Visualforce pages. The view state is the amount of data that is persisted between page requests. It includes the component tree, component attributes, and controller state. The StandardSetController reduces the view state size by storing only the current page of data in the view state, and not the entire data set.
The other options are incorrect because they do not provide an efficient or reliable way to implement pagination for Visualforce pages. Option A uses lazy loading and a transient list variable, which are not recommended for pagination. Lazy loading is a technique that defers loading data until it is needed, which can improve the initial page load time, but it can also cause performance issues if the data set is large or complex.
A transient list variable is a variable that is not stored in the view state, which can reduce the view state size, but it can also cause data loss or inconsistency if the page is refreshed or redirected. Option B uses JavaScript remoting with SOQL offset, which is not a good practice for pagination. JavaScript remoting is a technique that allows Visualforce pages to communicate with Apex controllers using asynchronous JavaScript calls.
SOQL offset is a clause that allows skipping a specified number of rows in a query result. However, JavaScript remoting has some limitations, such as the maximum size of the response payload (15 MB) and the maximum number of remoting calls per page (10). SOQL offset also has some limitations, such as the maximum offset value (2,000) and the performance impact of skipping many rows. Option C implements pagination with an OffsetController, which is a custom controller that uses the SOQL offset clause to paginate the data. This option has the same drawbacks as option B, as it relies on the SOQL offset clause, which is not a scalable or performant solution for pagination. References:
* Trailhead: Pagination with a StandardSetController
* Trailhead: Visualforce View State
* Salesforce Developer Guide: StandardSetController Class
* [Salesforce Developer Guide: JavaScript Remoting for Visualforce]
* [Salesforce Developer Guide: SOQL OFFSET Clause]

NEW QUESTION # 54
What are three ways for a developer to execute tests in an org? Choose 3.

A. Salesforce DX
B. Metadata API.
C. Bulk API
D. Tooling API
E. Setup Menu

Answer: A,D,E

Explanation:
A developer can execute tests in an org using different methods, depending on the context and the tools available. The Tooling API1 allows developers to run tests programmatically by making REST or SOAP calls. The Setup Menu2 provides a user interface for running tests in the Salesforce org. Salesforce DX3 is a command-line tool that enables developers to create, test, and deploy applications using scratch orgs, which are temporary and customizable orgs for development and testing purposes. References: 1: Tooling API | Apex Developer Guide | Salesforce Developers(https://cloudely.com/salesforce-interview-questions-with-answers/), 2: Run Unit Tests | Apex Developer Guide | Salesforce Developers(https://www.exam4training.com/what-are-three-ways-for-a-developer-to-execute-tests-in-an-org-cho Salesforce DX | Salesforce Developers(https://www.freecodecamp.org/news/types-of-software-testing/)

NEW QUESTION # 55
What should be used to create scratch orgs?

A. Developer Console
B. Sandbox refresh
C. Salesforce CLI
D. Workbench

Answer: C

Explanation:
Scratch orgs are created using the Salesforce CLI (sfdx force:org:create) as part of Salesforce DX. It is specifically designed for development and testing purposes.
Why not other options?
B: Sandbox refresh is used for creating sandboxes, not scratch orgs.
C: Developer Console is used for debugging and code development but cannot create scratch orgs.
D: Workbench is a tool for API testing and data manipulation, not for scratch org creation.
Salesforce CLI and Scratch Orgs

NEW QUESTION # 56
A developer Is Integrating with a legacy on-premise SQL database.
What should the developer use to ensure the data being Integrated is matched to the right records in Salesforce?

A. Lookup field
B. External ID field
C. Formula field
D. External Object

Answer: B

NEW QUESTION # 57
A developer must perform a complex SOQL query that joins two objects in a Lightning component.
How can the Lightning component execute the query?

A. Use the Salesforce Streaming APL to perform the SOQL query.
B. Invoke an Apex class with the method annotated as @AuraEnabled to perform the query.
C. Write the query in a custom Lightning web component wrapper and invoke from the Lightning component.
D. Create a flow to execute the query end invoke from the Lightning component.

Answer: C

NEW QUESTION # 58
......

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