SALESFORCE-PD1 Practice Test 7 — 10 Questions

Question 1

Which THREE features are supported in Salesforce scratch orgs? (Choose three.)

Accepted Answer

Installing unlocked and managed packages for testing.. Scratch orgs support source tracking, custom configurations, and feature activation.

Answer

Permanent production status with unlimited user licenses.

Answer

Directly modifying standard Salesforce platform source code.

Question 2

A developer needs to process 2 million records asynchronously, performing complex calculations and updating parent records in batches of 2,000. Which feature should the developer implement?

Accepted Answer

Batch Apex. Batch Apex is designed for processing large datasets in chunks asynchronously.

Answer

Queueable Apex

Answer

Future methods

Answer

Scheduled Apex

Question 3

A developer is using 'Test.isRunningTest()' in their production code. Why is this generally considered a poor practice?

Accepted Answer

It creates different code execution paths between test and production. While sometimes necessary, relying on it can lead to code paths that are not tested in production exactly as they execute in tests.

Answer

It causes the test to fail

Answer

It causes excessive governor limit usage

Answer

It is not supported in production

Question 4

Which method is used in an Apex trigger to display a custom error message on a specific record during a before insert event?

Accepted Answer

addError(). The addError() method on an sObject instance prevents the DML operation and displays an error message.

Answer

throw new TriggerException()

Answer

ApexPages.addMessage()

Answer

rejectRecord()

Question 5

A developer has a trigger that updates parent Account records when Child Contacts are modified. To prevent infinite recursion, the developer uses a static boolean variable in a helper class. What is a key limitation of using static variables for recursion control in Salesforce?

Accepted Answer

Static variables reset at the end of each transaction, and do not protect against separate transactions or certain bulk test setups.. Static variables persist only for the duration of a single transaction; if a secondary transaction or test context restarts, the static variable resets.

Answer

Static variables persist across multiple user transactions, causing triggers to never fire again.

Answer

Static variables cause governor limit exceptions on heap size.

Answer

Static variables are prohibited in trigger helper classes.

Question 6

Which TWO circumstances will cause an Apex unit test method to fail? (Choose two.)

Accepted Answer

A System.assert() or Assert.areEqual() statement evaluates to false.. Uncaught exceptions and failed system assertions cause test method failures.

Answer

The test method executes in read-only mode.

Answer

The test class code coverage is exactly 75%.

Answer

The test method finishes executing with zero assertions.

Question 7

A developer needs to invoke a long-running external web service callout from an existing scheduled Apex job that implements the Schedulable interface. What is the correct approach to implement this callout?

Accepted Answer

Enquie a Queueable Apex class that implements Database.AllowsCallouts from within the Schedulable execute method.. Schedulable Apex cannot directly make synchronous callouts because the thread must wait for the network response. Developers must chain a Queueable class that implements Database.AllowsCallouts.

Answer

Mark the Schedulable execute method with the @future(callout=true) annotation.

Answer

Implement Database.AllowsCallouts directly in the Schedulable class and execute the callout inside the execute method.

Answer

Invoke the external web service using a standard synchronous SOQL statement.

Question 8

A developer needs to chain asynchronous jobs. Which interface allows for a single job to be queued from within the execution of another?

Accepted Answer

Queueable. Queueable Apex allows for chaining jobs by calling System.enqueueJob within the execute method.

Answer

Batchable

Answer

Schedulable

Answer

Future

Question 9

A developer is writing an Apex test class and needs to reset governor limits before executing a block of asynchronous code testing. Which method should the developer use?

Accepted Answer

Test.startTest(). Test.startTest() and Test.stopTest() bracket the test section, resetting governor limits for the execution block within them and forcing any asynchronous calls to run synchronously.

Answer

Test.resetLimits()

Answer

Test.runAs()

Answer

Limits.reset()

Question 10

A developer wants to ensure that specific test data is available to all test methods in a class without recreating it. Which method should be used?

Accepted Answer

Use @testSetup.. @testSetup methods are executed once per class and set up data for all methods.

Answer

Use a static constructor.

Answer

Use a private method called by all tests.

Answer

Use Test.loadData().