SALESFORCE-PD1 Practice Test 12 — 15 Questions

Question 1

When testing asynchronous Apex, how do you ensure that the scheduled job has finished before asserting results?

Accepted Answer

Use Test.stopTest(). Test.stopTest() forces any asynchronous processes, such as @future or Schedulables, to execute before the code execution continues.

Answer

Query the AsyncApexJob object

Answer

Use System.runAs()

Answer

Use Thread.sleep()

Question 2

A developer needs to reset the governor limits within a test method to verify functionality that processes large amounts of records. Which method should be used?

Accepted Answer

Test.startTest(). Test.startTest() and Test.stopTest() reset the governor limits for the code executed between them.

Answer

System.resetLimits()

Answer

Test.loadData()

Answer

Test.stopTest()

Question 3

When should a developer choose to implement Schedulable Apex? (Choose two.)

Accepted Answer

To execute long-running batch processing or maintenance tasks periodically.. Schedulable Apex is used to run Apex classes at scheduled times or intervals, such as nightly batch jobs or periodic maintenance tasks.

Answer

To respond instantly to record inserts or updates.

Answer

To handle immediate real-time user interface validation.

Answer

To perform synchronous HTTP callouts directly from a Lightning Component button.

Question 4

A developer implements a Batch Apex class that updates millions of records. During the execution of the execute method, a transient database error occurs on a single record. What happens to the batch job by default if Database.executeBatch is called without additional parameters?

Accepted Answer

The entire batch job fails immediately, and no further chunks are processed.. By default, if an unhandled exception occurs in a batch chunk, the entire batch job fails and the error is logged, unless Database.insert is used with allOrNone set or exception handling is implemented.

Answer

The failed record is placed in a retry queue for asynchronous reprocessing.

Answer

Only the failed record is rolled back, and the batch continues processing the remaining records.

Answer

The entire database transaction is rolled back, but the batch continues to the next execute method.

Question 5

A developer is troubleshooting a Batch Apex job where records are failing to update intermittently due to record locking contention with concurrent updates. What is the recommended strategy to mitigate record locking?

Accepted Answer

Process records in smaller batch sizes and ensure parent records are sorted or processed in a deterministic order.. Sorting records in the start method query using FOR UPDATE or structuring batches by parent groups can reduce locking, and processing smaller batch sizes can also help.

Answer

Increase the batch size to the maximum of 2,000 to complete faster.

Answer

Convert the batch job into a synchronous trigger.

Answer

Disable all validation rules on the object permanently.

Question 6

A developer implemented a Queueable Apex class that performs heavy processing. During testing, the developer wants to verify whether the asynchronous job has finished executing before running dependent unit test assertions. What should the developer use?

Accepted Answer

Test.startTest() and Test.stopTest() block around the enqueueJob call. Developers use Test.startTest() and Test.stopTest() in unit tests to force all asynchronous jobs enqueued within the block to execute synchronously before proceeding.

Answer

AsyncApexJob query inside a loop with Thread.sleep()

Answer

A custom countdown latch pattern using platform cache

Answer

System.assertAsyncExecution() method

Question 7

How can a developer identify the most time-consuming SOQL query in a transaction?

Accepted Answer

By reviewing the debug log for query execution times.. By checking the 'Executed Units' or 'SOQL' section of the debug log for duration.

Answer

By inspecting the trigger size.

Answer

By checking the number of records returned.

Answer

By counting the number of lines in the code.

Question 8

What is the primary constraint on using @testSetup?

Accepted Answer

It must be a void method.. It cannot be used with @isTest(SeeAllData=true) in a way that allows access to existing data for setup.

Answer

It creates data that is isolated from the test methods.

Answer

It cannot interact with the database.

Answer

It can only be used once per project.

Question 9

What happens if a developer creates a test method that does not contain any assertions?

Accepted Answer

The test passes if the code executes without errors.. The test will pass as long as the code runs without error, but it is not a valid test.

Answer

The test is skipped by the compiler.

Answer

The compiler issues a warning.

Answer

The test fails immediately.

Question 10

A developer is writing a test class that requires several custom objects to be populated with data. What is the most efficient way to handle this across multiple test methods?

Accepted Answer

Use the @TestSetup annotation. The @TestSetup annotation allows creating data once for all test methods within a class, reducing execution time.

Answer

Create a static method and call it at the start of every test method

Answer

Insert the data inside the constructor of the test class

Answer

Use the Test.loadData() method for all objects

Question 11

Which of the following is a limitation of Change Sets?

Accepted Answer

They can only be used between related orgs. Change Sets are strictly one-way and cannot be used to deploy changes from production back to a sandbox.

Answer

They cannot deploy Custom Objects

Answer

They are limited to 100 components

Answer

They require the CLI to be installed

Question 12

When debugging a trigger, how can you view the flow of execution including entry and exit points of methods?

Accepted Answer

By viewing the Call Stack.. The Call Stack in the Debug Log shows the hierarchy of method calls.

Answer

By examining the heap size.

Answer

By running an Apex report.

Answer

By checking the Database log.

Question 13

Which THREE things can a developer do with the Salesforce CLI?

Accepted Answer

Query data from an org.. The CLI supports org management, code deployment, and data management.

Answer

Modify the Org's license type.

Answer

Update user passwords.

Question 14

Which THREE practices are considered security best practices when developing custom Visualforce pages to prevent Cross-Site Scripting (XSS)? Choose 3 answers.

Accepted Answer

Use standard Visualforce components like <apex:outputText> which automatically HTML-escape output by default.. Preventing XSS in Visualforce involves escaping output, using standard components which escape by default, and encoding untrusted data.

Answer

Disable sharing on all controller classes.

Answer

Set escape="false" on all output components to ensure proper rendering.

Question 15

When testing a class that depends on Custom Settings, what is the best practice?

Accepted Answer

Mock the custom settings using a wrapper class.. Create the custom settings in the test method setup to ensure independence from production data.

Answer

Ignore the custom settings in the test.

Answer

Hardcode the values into the test.

Answer

Use the production custom settings.