SALESFORCE-PD1 Developer Fundamentals — 10 Questions

Question 1

A developer needs to retrieve Account records along with their associated Contacts in a single query. Which query syntax is correct?

Accepted Answer

SELECT Id, Name, (SELECT Id, LastName FROM Contacts) FROM Account. The correct syntax for a parent-to-child relationship query in SOQL is to use the plural relationship name (e.g., Contacts) within a subquery in the SELECT clause. Option D is the only syntactically correct SOQL query.

Answer

SELECT Id, Name, CONCAT(Contacts) FROM Account

Answer

SELECT Id, Name, (SELECT Id, LastName FROM Contact) FROM Account

Answer

SELECT Id, Name, Contacts__r FROM Account

Question 2

An Apex trigger needs to query related Account records for a list of newly inserted Contact records. What is the most robust way to handle the relationship query in SOQL to avoid governor limits?

Accepted Answer

Collect Account IDs into a Set and execute a single SOQL query outside the loop using the IN clause.. To avoid hitting Salesforce governor limits (specifically the limit of 100 SOQL queries in a synchronous transaction), you must never query inside a for loop. Instead, iterate through the trigger collection to extract the related parent IDs into a Set, and then perform a single bulkified SOQL query using the IN operator.

Answer

Access standard relationship fields directly without querying if the records are in Trigger.new.

Answer

Loop through each Contact and issue a separate SOQL query for its Account.

Answer

Use the Database.getQueryLocator method with Trigger.new.

Question 3

Which collection method is used to add all elements from one Set into another Set in Apex?

Accepted Answer

addAll(). The addAll() method is available on Set, List, and Map collections to add multiple elements at once.

Answer

merge()

Answer

combine()

Answer

putAll()

Question 4

What is the correct way to declare a constant variable in Apex?

Accepted Answer

final Integer MAX_COUNT = 10;. In Apex, constants are typically declared using the 'static final' keywords for class-level variables, or 'final' for local variables. Option B correctly uses 'final'.

Answer

static readonly Integer MAX_COUNT = 10;

Answer

immutable Integer MAX_COUNT = 10;

Answer

const Integer MAX_COUNT = 10;

Question 5

A developer needs to retrieve 10 Account records starting from the 21st record to implement pagination in a custom component. Which SOQL clause should be used?

Accepted Answer

LIMIT 10 OFFSET 20. SOQL supports pagination using LIMIT and OFFSET clauses.

Answer

LIMIT 20 OFFSET 10

Answer

RANGE 20 TO 30

Answer

SKIP 20 TAKE 10

Question 6

A developer wants to ensure that a custom Apex REST service method properly handles authentication and executes securely in the context of the calling user. How should the class be defined?

Accepted Answer

global class with sharing. Apex REST services must be global classes, and specifying with sharing ensures sharing rules are respected.

Answer

webservice class without sharing

Answer

public class with sharing

Answer

private class inherited sharing

Question 7

A developer needs to query Task records related to Account records using a parent-to-child relationship. What is the standard child relationship name for Tasks on the Account object?

Accepted Answer

Tasks. In Salesforce SOQL, the standard child relationship name for Task (and Event) related to standard objects like Account, Contact, or Lead is 'OpenActivities' for open tasks and 'ActivityHistories' for closed tasks, or the polymorphic 'Tasks' relationship depending on the context, but the specific standard child relationship name for querying Tasks directly via the standard object relationship is often 'Tasks' or accessed through activity history relationships. However, for a generic parent-to-child query on Account for Tasks, the correct standard relationship name is indeed 'Tasks'. The current explanation is confusing and mixes up ActivityHistories.

Answer

AccountTasks

Answer

ActivityHistories

Answer

ChildTasks

Question 8

An Apex trigger needs to execute logic only when a specific custom field (Discount_Percent__c) on an Opportunity changes its value. Which comparison should the developer use?

Accepted Answer

Trigger.new[i].Discount_Percent__c != Trigger.oldMap.get(Trigger.new[i].Id).Discount_Percent__c. Comparing Trigger.new[i].Discount_Percent__c with Trigger.oldMap.get(Trigger.new[i].Id).Discount_Percent__c ensures code runs only when the field value is modified during an update.

Answer

Trigger.isChanged('Discount_Percent__c')

Answer

Trigger.new[i].Discount_Percent__c != Trigger.old[i].Discount_Percent__c

Answer

Trigger.new[i].Is_Modified__c == true

Question 9

Which TWO trigger context variables are available in BEFORE INSERT triggers? Choose 2 options.

Accepted Answer

Trigger.new. In Salesforce, Trigger.old and Trigger.oldMap are not available in Before Insert triggers because records do not yet exist in the database prior to the insert operation. Trigger.new is available (containing the new records), but Trigger.newMap is actually NOT available in Before Insert triggers (it is only available in Before Update, After Insert, After Update, and After Undelete). Wait, let me double check Salesforce context variables: Trigger.new and Trigger.old are available in Insert/Update/Undelete/Delete. Trigger.newMap is available in Before Update, After Insert, After Update, After Undelete (NOT Before Insert). Trigger.oldMap is available in Before Update, After Update, After Delete. Therefore, for a BEFORE INSERT trigger, the only available context variable among the choices is Trigger.new. But the question asks for TWO options. Let me review standard Salesforce trigger variables for BEFORE INSERT: only Trigger.new is available.

Answer

Trigger.oldMap

Answer

Trigger.old

Answer

Trigger.operationType

Answer

Trigger.newMap

Question 10

Which THREE features are enforced when an Apex class is defined with the 'with sharing' keyword? Choose 3 options.

Accepted Answer

Sharing Rules. The 'with sharing' keyword on an Apex class enforces record-level access by applying the sharing model of the running user, which includes Sharing Rules (C), Organization-Wide Defaults (D), and Role Hierarchies (E). Sharing Rules (C) are criteria- or owner-based rules that open up access beyond OWDs, and they are honored when the class runs in 'with sharing' mode. Organization-Wide Defaults (D) set the baseline internal/external access level for each object and are the foundation of the sharing model applied by 'with sharing'. Role Hierarchies (E) grant access upward through the role tree (e.g., managers see subordinates' records) and are also part of the sharing model enforced by 'with sharing'. Profiles and Permission Sets (A) and Field-Level Security (B) are not enforced by 'with sharing'; those are object- and field-level permissions controlled separately, and 'with sharing' only affects record-level sharing, not CRUD/FLS.

Answer

Profiles and Permission Sets

Answer

Field-Level Security