SALESFORCE-PD1 Practice Test 9 — 10 Questions

Question 1

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?

Choose an answer to begin — your selection is scored in the full session.

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 2

A developer needs to ensure that a custom logging operation runs asynchronously and can be monitored using job IDs. Which interface is best suited?

Accepted Answer

Queueable. Queueable Apex provides job IDs upon enqueueing, allowing for tracking and monitoring.

Answer

Schedulable

Answer

Database.AllowsCallouts

Answer

Database.Batchable

Question 3

An Apex trigger processes a list of Case records. The developer wants to group the cases by their AccountId. Which data structure is best suited for this grouping?

Accepted Answer

Map>. A Map where the key is the AccountId (Id) and the value is a List of Cases (List) allows efficient grouping of child records by parent ID.

Answer

List<Map<Id, Case>>

Answer

Set<Map<Id, Case>>

Answer

Map<Id, Case>

Question 4

An application has complex business logic where an Apex class called from a trigger needs to know whether it was invoked from an insert or update trigger context. How can the developer determine this?

Accepted Answer

Check Trigger.isInsert and Trigger.isUpdate boolean variables.. Trigger.isInsert and Trigger.isUpdate context variables indicate whether the current trigger execution was caused by an insert or update operation.

Answer

Query the Audit Trail object for the active transaction ID.

Answer

Check if Trigger.old is null; if null, it is always an update.

Answer

Inspect the exception stack trace using System.debug().

Question 5

A developer wants to ensure that a custom Apex controller method can be invoked securely from a Lightning Web Component. Which annotation must be applied to the method?

Accepted Answer

@AuraEnabled. @AuraEnabled enables methods to be called from Lightning components and can also cache data.

Answer

@InvocableMethod

Answer

@RemoteAction

Answer

@WebService

Question 6

A developer is writing a batch Apex class. During the execute method, a record fails validation. The developer wants to ensure that successfully processed records in the same batch are committed while failing records are logged without aborting the entire batch. How should the DML be performed?

Accepted Answer

Database.insert(records, false). Using Database.insert(records, false) performs partial DML success, allowing valid records to commit while returning an array of save results for error handling.

Answer

try-catch block around a standard insert statement

Answer

Database.upsert(records, true)

Answer

Standard insert statement (e.g., insert records;)

Question 7

What is the correct file extension for an Apex class created in Salesforce DX?

Accepted Answer

.cls. Apex class files use the .cls extension, accompanied by a .cls-meta.xml metadata file.

Answer

.apex

Answer

.controller

Answer

.trigger

Question 8

A developer writes an Apex method with the 'inherited sharing' keyword. What is the behavior of this class when invoked from a class declared with 'with sharing'?

Accepted Answer

It enforces sharing rules because the calling class has 'with sharing'.. Inherited sharing classes execute with sharing when invoked from a with sharing context, inheriting the caller's sharing rules.

Answer

It throws a compilation error because sharing modes conflict.

Answer

It executes in system mode without enforcing sharing rules.

Answer

It prompts the user to select a sharing mode at runtime.

Question 9

A developer writes a SOQL query to aggregate total opportunity amounts grouped by stage name. Which SOQL clause is required?

Accepted Answer

GROUP BY. Aggregate queries in SOQL require the GROUP BY clause when using functions like SUM(), COUNT(), or AVG().

Answer

HAVING BY

Answer

AGGREGATE BY

Answer

ORDER BY

Question 10

A developer writes a SOQL query to fetch Account records and wants to bind a list of strings called 'targetNames' as filter criteria. Which syntax is correct?

Accepted Answer

SELECT Id FROM Account WHERE Name IN :targetNames. Using IN :targetNames allows binding a collection variable directly into a SOQL WHERE clause.

Answer

SELECT Id FROM Account WHERE Name IN targetNames

Answer

SELECT Id FROM Account WHERE Name IN {targetNames}

Answer

SELECT Id FROM Account WHERE Name IN STRING.valueOf(targetNames)