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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Salesforce Certified Platform Developer II - Multiple Choice Sample Questions:

1. A developer has working business logic code, but sees the following error in the test class:
You have uncommitted work pending. Please commit or rollback before calling out.
What is a possible solution?

A) Use mast. T=RunningTes={} before making the callout to bypass it in test execution,
B) Rewrite the business logic and test classes with @Testvisible set on the callout.
C) Set seeAllData to true the top of the test class, since the code does not fall in practice.
D) Call support for help with the target endpoint, as It is likely an external code error.

2. As part of a custom interface, a developer team creates various new Lightning web components. Each of the components handles errors using toast messages. When the development is complete, all the components are added to the same Lightning page.
During acceptance testing, users complain about the long chain of toast messages that display when errors occur loading the components.
Which two techniques should the developer implement to improve the user experience?
Choose 2 answers

A) Use the window.alert() method to display the error messages
B) Use a <tamplate> tag to display in-place error messages.
C) Use public, properties on each component to display the error messages.
D) Use a Lightning web component to aggregate and display all errors

3. Consider the following code snippet:

How should the <e-orders> component communicate to the <c-selected-orders component that an order has been selected by the user?

A) Create and fire a standard DOM event.
B) Create and dispatch a custom event,
C) Create and fire an application event.
D) Create and fire a component event.

4. A developer is creating a Lightning web component that displays a list of records in a lightning-datatable. After saving a new record to the database, the list is not updating.

What should the developer change in the code above for this to happen?

A) Call rafrasnApex() ON this.dazta.
B) Create a new variable to store the result and annotate it with @track.
C) Add the @track decorator to the data variable.
D) Create a variable to store the result and call refreshpex().

5. Exhibit:

The test method above tests in Apex trigger that the developer knows will make a lot of queries when a lot of Accounts are simultaneously updated to be customers. The test method fails at the Line 20 because of too many SOQL queries. What is the correct way to fix this?

A) Add Test.startTest() before Line 18 of the code and add Test.stopTest() after line 18 of the code
B) Change the DataFactory class to create fewer Accounts so that the number of queries in the trigger is reduced
C) Replace most of the Apex Trigger with Process Builder processes to reduce the number of queries in the trigger
D) Add Test.startTest() before and Test.stopTest() after both Line 7 of the code and Line 20 of the code

Solutions: