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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Salesforce Certified Platform Developer II - Multiple Choice Sample Questions:

1. A developer is debugging an Apex-based order creation process that has a requirement to have three savepoints, SP1, SP2, and 5P3 {created in order), before the final execution of the process.
During the final execution process, the developer has a routine to roll back to SP1 for a given condition. Once the condition is fixed, the code then calls 2 roll back to SP3 to continue with final execution. However, when the roll back to SP3 is called, a Funtime error occurs.
Why does the developer receive a runtime error?

A) SP3 became invalid when SP1 was rolled back.
B) The developer used too many savepoints in one trigger session.
C) The developer should have called SF2 before calling SP3.
D) The developer has too many DML statements between the savepoints.

2. Which three approaches should a developer implement to obtain the best performance for data retrieval when building a Lightning web component? Choose 3 answers

A) Use layoutTypes: 9'Full') to display a set of fields.
B) Use {Cacheable=true} whenever possible
C) Use lazy load for occasionally accessed data.
D) Use the Lightning Data Service.
E) Use getRecordUi to obtain metadata.

3. Universal Containers analyzes a Lightning web component and its Apex controller class that retrieves a list of contacts associated with an account. The code snippets are as follows:

Based on the code snippets, what change should be made to display the contacts' mailing addresses in the Lightning web component?

A) Modify the SOQL query in the getAccountContacts method to include the MailingAddress field and update the columns attribute in javascript file to add Mailing address fields.
B) Add a new method in the Apex controller class to retneve the mailing addresses separately and modify the Lightning web component to invoke this method.
C) Extend the lightning-datatable component in the Lightning web component to include a column for the MailingAddress field.
D) Modify the SOQL guery in the getAccountContacts method to include the MailingAddress field.

4. A developer notices the execution of all the test methods in a class takes a long time to run, due to the initial setup of all the test data that is needed to perform the tests. What should the developer do to speed up test execution?

A) Ensure proper usage of test data factory in all test methods.
B) Define a method that creates test data and annotate with @testSetup.
C) Reduce the amount of test methods in the class.
D) Define a method that creates test data and annotate with @createData.

5. When developing a Lightning web component, which setting displays lightninglayout-items im one column on small devices, such as mobile phones, and in two columns on tablet-size and desktop-size screens?

A) Set size="12" tablet-device-size="6"
B) Set size="6" mobile-device-size="12"
C) Set size="12" medium-device-size="6"
D) Set size="6" small-device-size="12"

Solutions: