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Salesforce Platform Developer I (PDI) Sample Questions (Q204-Q209):

NEW QUESTION # 204
A developer is designing a new application on the Salesforce platform and wants to ensure it can support multiple tenants effectively.
Which design framework should the developer consider to ensure scalability and maintainability?

Answer: D

Explanation:
MVC: The Model-View-Controller design pattern is ideal for Salesforce development as it separates the business logic (model), user interface (view), and controller logic, ensuring scalability and maintainability.
Salesforce's architecture inherently supports MVC, with sObjects as the model, Visualforce or Lightning components as the view, and Apex controllers as the controller.
Why not other options?
A: The Waterfall model is a development methodology, not a design framework.
B: Flux is a front-end application architecture and not relevant to Salesforce.
D: Agile is a development methodology, not a design framework.
Salesforce MVC Architecture


NEW QUESTION # 205
A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of new Apex helper class. Change Set deployment to production fails with the test coverage warning:
"Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required" What should the developer do to successfully deploy the new Apex trigger and helper class?

Answer: D


NEW QUESTION # 206
Considering the following code snippet:

When the code executes a DML exception is thrown.
How should the developer modify the code to ensure exceptions are handled gracefully?

Answer: C


NEW QUESTION # 207
Which Apex class contains methods to return the amount of resources that have been used for a particular governor, such as the number of DML statements?

Answer: B

Explanation:
* The Limits class in Apex provides methods to check the consumption of governor limits, such as the number of SOQL queries, DML statements, and heap size used.
* Example:
Integer dmlStatements = Limits.getDMLStatements();
Integer dmlLimit = Limits.getLimitDMLStatements();
* Not Suitable:
* Option A: OrgLimits is not an Apex class.
* Option C: Messaging deals with email and messaging operations.
* Option D: Exception is for handling exceptions, not tracking resource usage.


NEW QUESTION # 208
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to Include helper methods that are not used by the Web Application In the Implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?
A)

B)

C)

D)

Answer: A


NEW QUESTION # 209
......

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