SALESFORCE-PD1 Practice Exam 4 — 20 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().

Question 11

A developer is implementing navigation in a Lightning Experience app using the NavigationMixin service in a Lightning Web Component. The developer wants to navigate to a standard ListView for the Account object. What is the correct type to specify?

Accepted Answer

type: 'standard__objectPage', attributes: { objectApiName: 'Account', actionName: 'list' }. NavigationMixin.Navigate uses standard page references where type is 'standard__objectPage' and actionName is 'list'.

Answer

type: 'standard__webPage', attributes: { url: '/lightning/o/Account/list' }

Answer

type: 'standard__recordPage', attributes: { objectApiName: 'Account', actionName: 'view' }

Answer

type: 'standard__namedPage', attributes: { pageName: 'accountList' }

Question 12

A Queueable Apex job implements Database.AllowsCallouts and chains another Queueable job. What is the maximum number of jobs that can be chained in a single transaction chain?

Accepted Answer

5. Queueable jobs can be chained, but only one child job can be spawned per execution, up to a maximum depth limit of 5 in a synchronous transaction chain (or more depending on async chains, but standard chaining depth is limited).

Answer

Unlimited

Answer

1

Answer

50

Question 13

A developer wants to inspect the code coverage of individual classes directly within the Salesforce Developer Console. Under which tab can the developer view this breakdown?

Accepted Answer

Tests tab. The Tests tab in the Developer Console displays test execution status, test results, and code coverage percentages by class.

Answer

Query Editor tab

Answer

DOM Inspector tab

Answer

Logs tab

Question 14

A developer wants to view real-time debug log streaming in their local environment using the Salesforce CLI. Which command should the developer execute?

Accepted Answer

sf apex log tail. The sf apex tail log command streams debug logs to the terminal in real time.

Answer

sf apex run test

Answer

sf project deploy start

Answer

sf org display

Question 15

A developer writes an Apex trigger that performs a SOQL query inside a standard for-loop processing Trigger.new. Which governor limit is most likely to be exceeded?

Accepted Answer

Total number of SQL queries issued (100). Querying inside loops easily exhausts the total SOQL queries issued per transaction limit of 100.

Answer

Total heap size (6 MB)

Answer

Total number of records retrieved by SOQL queries (50,000)

Answer

Total CPU time (10,000 milliseconds)

Question 16

A developer needs to process 500,000 records daily and update a custom field based on complex business logic. Which asynchronous Apex feature is specifically designed to handle large batch data processing with flexible scope sizes and built-in transaction monitoring?

Accepted Answer

Batch Apex. Batch Apex is designed for processing large numbers of records (millions) by breaking them down into manageable batches and running them asynchronously.

Answer

Future Methods

Answer

Queueable Apex

Answer

Schedulable Apex

Question 17

A developer is deploying metadata from a sandbox to a production org using Salesforce CLI. Which command should the developer use to validate the deployment without actually saving components to the target organization?

Accepted Answer

sf project deploy start --dry-run. The sf project deploy start command includes a dry-run or check-only validation flag. In modern Salesforce CLI (sf), it is --dry-run.

Answer

sf project retrieve start --validate

Answer

sf project deploy validate

Answer

sf org check deploy

Question 18

A developer needs to write a unit test to verify that a trigger correctly inserts related Task records when a custom object record is created. Which annotation should the developer place on the test class method to ensure it runs correctly and can access existing org data if needed?

Accepted Answer

@isTest. The @isTest annotation identifies a method or class as containing unit tests. Using @isTest(SeeAllData=true) is sometimes required when legacy data must be accessed, though best practice is to create test data locally.

Answer

@ReadOnly

Answer

@TestVisible

Answer

@TestSetup

Question 19

A batch Apex class processes 50,000 records. During the execute method, a custom governor limit is approached. Which method can the developer call to check the remaining CPU time dynamically?

Accepted Answer

Limits.getCpuTime(). Limits.getLimitCpuTime() and Limits.getCpuTime() allow developers to monitor resource usage dynamically.

Answer

System.getCPU()

Answer

AsyncApexJob.getCpuTime()

Answer

BatchContext.getCpuTime()

Question 20

A developer has a requirement to pass a complex SObject list containing parent and child records into an asynchronous method for further processing. Which asynchronous feature supports passing non-primitive data types such as Lists of SObjects?

Accepted Answer

Queueable Apex. Queueable Apex supports the execution of jobs asynchronously and allows passing non-primitive data types such as lists of SObjects through class member variables.

Answer

Email Services

Answer

Schedulable Apex

Answer

Future Methods