SALESFORCE-PD1 Developer Fundamentals — Timed 10 Questions

Question 1

What is the maximum number of SOQL queries that can be issued in a single synchronous Apex transaction?

Accepted Answer

100. The synchronous governor limit for SOQL queries is 100 queries per transaction.

Answer

50

Answer

200

Answer

500

Question 2

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. Parent-to-child subqueries use plural child relationship names enclosed in parentheses inside the SELECT clause.

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 3

A developer needs to ensure that an Apex class respects organization-wide defaults, role hierarchies, and sharing rules when querying custom objects. Which keyword should be added to the class definition?

Accepted Answer

with sharing. The with sharing keyword enforces sharing rules of the current user, while without sharing runs in system mode.

Answer

enforce sharing

Answer

without sharing

Answer

inherited sharing

Question 4

An enterprise application requires Apex code to check whether the current user has read access to a specific custom field before displaying it in a custom Lightning Web Component. What is the most appropriate class to use?

Accepted Answer

Schema.DescribeFieldResult. The Schema.DescribeFieldResult class provides methods like isAccessible() to check Field-Level Security (FLS) dynamically.

Answer

System.Security

Answer

UserInfo

Answer

ApexPages.StandardController

Question 5

A developer writes an Apex method that executes a SOQL query using user-supplied search parameters. How can the developer protect against SOQL injection vulnerabilities?

Accepted Answer

Use bind variables in the SOQL query instead of string concatenation.. Using bind variables in SOQL queries automatically sanitizes the input and prevents SOQL injection, unlike string concatenation.

Answer

Execute the query using Database.queryWithBinds() with a restricted access modifier.

Answer

Use String.escapeSingleQuotes() on all user inputs before concatenating into the query string.

Answer

Enclose all dynamic parameters in single quotes within the dynamic SOQL query string.

Question 6

Which Apex data type should a developer use to represent a precise geographic location with latitude and longitude coordinates?

Accepted Answer

Location. The Location primitive data type in Apex is designed specifically to represent geographic locations with latitude and longitude.

Answer

Coordinate

Answer

Address

Answer

GeoPoint

Question 7

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.. Using a parent-to-child or child-to-parent relationship query inside a single SOQL statement executed on the Trigger.new collection prevents hitting the SOQL query governor limit.

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 8

A developer needs to store a collection of unique customer email addresses in Apex and check for existence efficiently. Which collection type should the developer use?

Accepted Answer

Set. A Set is a collection of unique elements and provides efficient lookup using methods like contains(), making it ideal for checking existence.

Answer

Queueable

Answer

List

Answer

Map

Question 9

Which component of the MVC design pattern in Salesforce Lightning Web Components (LWC) represents the data model and business logic layer?

Accepted Answer

Apex classes and database objects. In Salesforce, the Model layer corresponds to the database and Apex controllers/SOQL queries handling data.

Answer

HTML template files

Answer

CSS style sheets

Answer

JavaScript controller files

Question 10

A developer is writing code that processes untrusted data and wants to automatically strip fields and relationships that the current user cannot access, without throwing an exception. Which feature should be used?

Accepted Answer

Security.stripInaccessible(). The Security.stripInaccessible() method strips fields and SObjects that the user lacks permission to read or create/update, avoiding runtime security exceptions.

Answer

Database.insert(records, AccessType.ENFORCE_ACCESSIBLE)

Answer

Approval.lock()

Answer

Schema.sObjectType.fields.isAccessible()