SALESFORCE-PD1 Practice Test 19 — 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

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.. Trigger.new is available on insert, update, and undelete. Trigger.old is available on update and delete.

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 3

A developer needs to convert a JSON string representing a list of Account records into an actual List<Account> in Apex. Which method should be used?

Accepted Answer

(List) JSON.deserialize(jsonString, List.class). JSON.deserialize() parses a JSON string into strongly typed Apex objects or collections.

Answer

JSON.parse(jsonString)

Answer

List<Account>.parse(jsonString)

Answer

JSON.deserializeUntyped(jsonString)

Question 4

A developer needs to query records using SOSL in Apex. Which THREE components are syntactically required in a valid SOSL statement? (Choose three.)

Accepted Answer

The RETURNING clause specifying sObjects and fields to return.. SOSL queries require the FIND clause with search terms, the IN clause specifying search groups, and the RETURNING clause specifying objects and fields.

Answer

The GROUP BY clause for aggregate calculations.

Answer

The FROM clause specifying the primary sObject.

Question 5

A developer needs to execute logic before a record is saved to the database, with the ability to modify field values on the same record without issuing a DML statement. Which trigger event should be used?

Accepted Answer

Before Insert. Before triggers are specifically designed for updating or validating record fields prior to persistence without requiring an explicit DML statement.

Answer

After Insert

Answer

After Update

Answer

Before Undelete

Question 6

A developer needs to pass a custom SObject record with related child lists into an asynchronous execution context. Which asynchronous Apex feature supports passing non-primitive types such as custom Apex objects or sObject collections?

Accepted Answer

Queueable Apex. Queueable Apex supports member variables of non-primitive types, including sObjects and custom classes.

Answer

Scheduled Apex

Answer

Future methods

Answer

Trigger asynchronous execution blocks

Question 7

What is the synchronous governor limit for the total number of SOQL queries issued in a single Apex transaction?

Accepted Answer

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

Answer

200 locs

Answer

200

Answer

50

Question 8

A developer is choosing between Future methods and Queueable Apex. Which TWO characteristics are unique to Queueable Apex? (Choose TWO.)

Accepted Answer

Queueable Apex returns an AsyncApexJob ID that can be used to monitor job progress.. Queueable Apex supports complex objects and job chaining, unlike future methods.

Answer

Queueable Apex methods can be called synchronously from inside formula fields.

Answer

Queueable Apex does not support asynchronous job chaining.

Answer

Queueable Apex restricts external HTTP callouts entirely.

Question 9

Which THREE trigger context variables are available ONLY in insert and update triggers (not delete triggers)? (Choose THREE.)

Accepted Answer

Trigger.newMap. Trigger.new, Trigger.newMap, and Trigger.oldMap are available in insert/update contexts (oldMap is update only, new/newMap are insert/update). Let's check exact availability: Trigger.new and Trigger.newMap are available on insert and update (and undelete for new). Trigger.old and Trigger.oldMap are available on update and delete. Let's frame the question around variables available in Trigger insert/update events vs delete.

Answer

Trigger.old

Answer

Trigger.oldMap

Question 10

Which THREE actions can a developer take to optimize SOSL query performance and adhere to best practices? Choose 3 answers.

Accepted Answer

Target specific fields (e.g., EMAIL FIELDS) rather than searching ALL FIELDS.. SOSL best practices include specifying the object and fields to return, targeting specific search text instead of leading wildcards, and restricting search scopes.

Answer

Use leading wildcards (e.g., '*Smith') to broaden search flexibility.

Answer

Execute SOSL inside a tight for-loop over large data sets.

Question 11

A developer needs to retrieve a list of Accounts along with their related Contacts using a single SOQL query in Apex. Which query structure is syntactically correct?

Accepted Answer

SELECT Id, Name, (SELECT Id, LastName FROM Contacts) FROM Account. Parent-to-child relationships in SOQL are queried using a subquery within parentheses inside the SELECT clause.

Answer

SELECT Id, Name, Contacts.Id, Contacts.LastName FROM Account

Answer

SELECT Id, Name, Contact__r.Name FROM Account

Answer

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

Question 12

Which trigger context variable is available exclusively in before insert, before update, and before delete triggers to modify field values?

Accepted Answer

Trigger.new. Trigger.new contains sObjects that can be modified in-flight during before insert and before update triggers.

Answer

Trigger.old

Answer

Trigger.oldMap

Answer

Trigger.newMap

Question 13

A developer is writing an Apex trigger and needs to ensure proper bulkification. Which TWO practices should the developer follow to avoid governor limits? (Choose two.)

Accepted Answer

Perform SOQL queries and DML operations outside of loops.. Bulkification requires processing data in collections (lists/sets) and placing all DML and SOQL operations outside of loops.

Answer

Use single record DML statements inside a standard for-loop.

Answer

Hardcode record IDs to query specific test records.

Answer

Annotate the trigger with @future to ensure asynchronous bulk processing.

Question 14

What is the maximum number of asynchronous Apex jobs that can be queued in a 24-hour period in a Developer Edition org?

Accepted Answer

250,000. The limit is 250,000 asynchronous Apex method executions per 24-hour period.

Answer

1,000,000

Answer

10,000

Answer

100

Question 15

Which THREE limitations apply to @future methods?

Accepted Answer

Cannot pass SObjects as arguments. Future methods cannot be tracked, have specific parameter limits, and cannot be chained.

Answer

Cannot be used in a test class

Answer

Cannot be used in a Batch Apex class