SALESFORCE-PD1 Developer Fundamentals Practice Test 7 — 15 Questions

Question 1

A developer needs to dynamically instantiate an sObject type based on a string variable representing the object name (e.g., 'Account'). Which method should be used?

Accepted Answer

Schema.getGlobalDescribe().get('Account').newSObject(). Schema.getGlobalDescribe().get('Account').newSObject() allows dynamic sObject creation from a string object name.

Answer

Type.forName('Account').newInstance()

Answer

Database.load('Account')

Answer

SObject.createInstance('Account')

Question 2

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)

Question 3

A developer needs to iterate over a map of Account IDs to Account sObjects and perform processing on each value. Which loop construct is valid Apex?

Accepted Answer

for(Account acc : myMap.values()) { ... }. Iterating over map values is done using map.values() in a for-loop: for(Account acc : myMap.values()).

Answer

for(KeyValue kv : myMap.entrySet()) { ... }

Answer

for(Account acc : myMap) { ... }

Answer

for(Id id : myMap.iterator()) { ... }

Question 4

Which collection type stores elements as key-value pairs in Apex?

Accepted Answer

Map. A Map stores key-value pairs where each unique key maps to a single value.

Answer

Set

Answer

Array

Answer

List

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 needs to query all Contact records, including those that have been deleted from the database via the Recycle Bin. Which SOQL clause must be added?

Accepted Answer

ALL ROWS. ALL ROWS must be appended to a SOQL query to include records in the Recycle Bin (deleted records) and archived tasks/events.

Answer

INCLUDING DELETED

Answer

FOR VIEW

Answer

FOR REFERENCE

Question 7

An Apex trigger executes during a bulk insert of 300 records. To adhere to best practices regarding governor limits and bulkification, how should SOQL queries be written?

Accepted Answer

Query once outside the loop using a collection of IDs from Trigger.new. Queries must be written using bulkified collections, querying once outside of loops using bind variables for all records in Trigger.new.

Answer

Query inside a for-loop iterating over Trigger.new

Answer

Query each record individually using Limits.getQueries() checks

Answer

Use an asynchronous future method for every individual record

Question 8

Which Apex data type is best suited for storing monetary amounts with high precision?

Accepted Answer

Decimal. The Decimal data type is used for currency and precise numerical calculations in Apex.

Answer

Double

Answer

String

Answer

Integer

Question 9

An Apex trigger needs to prevent records from being saved if a specific validation condition fails. How should the developer reject the DML operation on a specific record?

Accepted Answer

record.addError('Validation failed.');. Adding an error message to a record sObject in Trigger.new (e.g., record.addError('Message')) prevents that record from saving and adds an error to the UI/transaction.

Answer

Trigger.rollback();

Answer

ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR, 'Error'));

Answer

throw new ValidationException('Error');

Question 10

A developer writes a SOQL query using the FORMAT() keyword. What is the purpose of this keyword?

Accepted Answer

To return number, date, and currency fields formatted according to the user's locale. FORMAT() formats currency, date, time, and numerical fields according to the current user's locale settings.

Answer

To ensure SOQL query syntax is validated before execution

Answer

To format query results into JSON format

Answer

To convert string fields into uppercase

Question 11

Which TWO statements are true regarding the behavior of Apex triggers and context variables? Choose 2 answers.

Accepted Answer

Trigger.old is available in update and delete triggers.. Option A is correct because Trigger.old holds the previous versions of the records and is populated in update triggers (the old values before the change) and in delete triggers (the records being deleted), so it is available in both update and delete contexts. Option B is correct because Trigger.new holds the new versions of the records and is populated in insert triggers (records being created), update triggers (records with their new values), and undelete triggers (records being restored), making it available in all three contexts. Option C is wrong because Trigger.old is not available in insert triggers, since there are no prior versions of records that do not yet exist. Option D is wrong because Trigger.new records are read-only only in after triggers; in before triggers they are writable and can be modified to change what is saved. Option E is wrong because Trigger.newMap is not available in before insert triggers, since the records have no IDs yet and the map is keyed by record ID.

Answer

Trigger.old is available in insert and update triggers.

Answer

Trigger.new records are always read-only in before triggers.

Answer

Trigger.newMap is available in before insert triggers.

Question 12

Which TWO data types can be used as keys in an Apex Map? Choose 2 answers.

Accepted Answer

Id. Primitive data types like String, ID, and Integer can be used as map keys in Apex.

Answer

Blob

Answer

List<String>

Answer

SObject

Question 13

Which THREE statements are accurate regarding Apex transaction control and database savepoints? Choose 3 answers.

Accepted Answer

Database.setSavepoint() returns a Savepoint object reference.. Savepoints allow partial rollbacks within a single transaction using Database.setSavepoint() and Database.rollback().

Answer

Establishing a savepoint resets the SOQL query governor limit counter.

Answer

Rolling back to a savepoint clears all governor limit exceptions already thrown.

Question 14

Which THREE best practices should a developer follow when implementing CRUD and FLS checks in Apex? Choose 3 answers.

Accepted Answer

Check sObject createability before performing insert DML operations.. Developers should check isAccessible, isCreateable, and isUpdateable using describe results before querying or saving data.

Answer

Rely solely on 'with sharing' keywords to handle field-level security checks.

Answer

Disable all triggers when performing security checks.

Question 15

Which TWO features are characteristics of SOSL (Salesforce Object Search Language) queries? Choose 2 answers.

Accepted Answer

SOSL can search across multiple sObjects and fields in a single query.. SOSL searches text across multiple objects and fields simultaneously and can tokenize words for matching.

Answer

SOSL returns a single flat List of SObjects.

Answer

SOSL queries can update existing records directly.

Answer

SOSL queries are limited to a maximum of 10 records per search.