SALESFORCE-PD1 Practice Test 2 — 10 Questions

Question 1

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 2

Which TWO statements about Apex variables and initialization are true? Choose 2 options.

Accepted Answer

Every variable in Apex must be explicitly declared with its data type.. Unassigned primitive variables default to null, and variables must be declared with a type before use.

Answer

Integer variables default to 1 if unassigned.

Answer

Apex supports dynamic duck typing without variable declarations.

Answer

Boolean variables default to true if unassigned.

Question 3

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()

Question 4

A developer needs to execute a dynamic SOQL query where the object name and fields are determined at runtime. Which method should be used?

Accepted Answer

Database.query(). Database.query() allows execution of dynamically constructed SOQL query strings.

Answer

Record.query()

Answer

System.query()

Answer

SOQL.query()

Question 5

Which type of Apex trigger context variable returns a list of new versions of the sObject records?

Accepted Answer

Trigger.new. Trigger.new contains all the new versions of the sObject records for insert and update triggers.

Answer

Trigger.newMap

Answer

Trigger.old

Answer

Trigger.caller

Question 6

A developer needs to update 5,000 Account records and wants to ensure that if any single record fails validation, none of the records are committed to the database. Which method should be used?

Accepted Answer

update acctList;. Standard DML statements (like update acctList;) are all-or-nothing operations. If any record fails, the entire transaction rolls back.

Answer

acctList.save()

Answer

Database.update(acctList, false)

Answer

Database.save(acctList, true)

Question 7

Which TWO collections are valid in Apex and maintain the insertion order of their elements? Choose 2 answers.

Accepted Answer

Map. Lists and Maps (specifically keeping insertion order for iteration) maintain insertion order, whereas standard sets do not guarantee order.

Answer

TreeSet

Answer

Set

Answer

Queue

Question 8

A developer is writing a test class for an Apex trigger and needs to insert test Account records. Best practices recommend bypassing hardcoded IDs. Which annotation should be placed on the test setup method to create common test data efficiently?

Accepted Answer

@TestSetup. The @TestSetup annotation allows developers to create test records once and make them available for all test methods in the class.

Answer

@IsTest(SeeAllData=true)

Answer

@TestVisible

Answer

@RemoteAction

Question 9

Which TWO methods are used to inspect sObject field metadata dynamically in Apex? Choose 2 options.

Accepted Answer

Schema.getGlobalDescribe(). SObjectType.getDescribe() and Schema.getGlobalDescribe() are used for inspecting schema metadata.

Answer

System.describeFields()

Answer

Object.inspect()

Answer

Database.getMetadata()

Question 10

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