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Salesforce Prepare for your Platform Developer I Certification CRT-450 Exam Practice Test
Question 1
The Account object in an organization has a master-detail relationship to a child object called Branch. The following automations exist:
* Roll-up summary fields
* Custom validation rules
* Duplicate rules
developer created a trigger on the Account object.
Which two things should the developer consider while testing the trigger code?
Choose 2 answers
Answer : A, C
A . Roll-up summary fields can cause the parent record to go through Save:
When a roll-up summary field on a parent object (like Account) is updated due to changes in child records (like Branch), the parent record (Account) is implicitly saved again.
This can result in the execution of the trigger on the parent object. Developers must consider this behavior to avoid unintended recursion or infinite loops.
C . The trigger may fire multiple times during a transaction:
Triggers can execute multiple times within a single transaction, especially when there are operations such as updates to the parent record caused by roll-up summary fields or workflows.
Developers should implement logic to ensure that the trigger handles multiple executions correctly (e.g., using a static variable to prevent recursion).
Why not the other options?
B . Duplicate rules are executed once all DML operations commit to the database:
This is incorrect because duplicate rules execute before the DML operation is committed. Duplicate rules prevent duplicate records from being created or updated before the database operation occurs.
D . The validation rules will cause the trigger to fire again:
This is incorrect because validation rules do not cause triggers to fire again. Validation rules validate the record and may prevent DML operations, but they do not independently re-trigger the Apex trigger.
Question 2
What are three capabilities of the
Choose 3 answers
Answer : A, B, D
Question 3
Where are two locations a developer can look to find information about the status of batch or future methods?
Choose 2 answers
Answer : B
Question 4
Universal Containers has implemented an order management application. Each Order can have one or more Order Line items. The Order Line object is related to the Order via a master-detail relationship. For each Order Line item, the total price is calculated by multiplying the Order Line item price with the quantity ordered.
What is the best practice to get the sum of all Order Line item totals on the Order record?
Answer : A
Question 5
Universal Containers is building a recruiting app with an Applicant object that stores information about an individual person and a Job
object that represents a job. Each applicant may apply for more than one job.
What should a developer implement to represent that an applicant has applied for a job?
Answer : A
A . Junction object between Applicant and Job:
Since an Applicant can apply for multiple Jobs and each Job can have multiple Applicants, this is a many-to-many relationship.
Salesforce requires a junction object to represent many-to-many relationships. The junction object will have two master-detail relationships: one to the Applicant object and one to the Job object.
The junction object could be named something like JobApplication__c, which would represent the specific instance of an applicant applying for a particular job.
Why this is the correct approach?
A junction object allows for robust data management and reporting capabilities in a many-to-many relationship.
This design ensures that each combination of applicant and job is captured as a unique record in the JobApplication__c junction object.
It also allows storing additional details about the application, such as application date, status, and feedback.
Why not the other options?
B . Lookup field from Applicant to Job:
A lookup field creates a one-to-many relationship. While an Applicant could reference one Job, it does not support the many-to-many relationship required in this scenario.
C . Master-detail field from Applicant to Job:
A master-detail relationship is a one-to-many relationship, which is unsuitable for a many-to-many relationship. Additionally, you cannot have two master-detail fields on a single object to connect Applicant and Job directly.
D . Formula field on Applicant that references Job:
A formula field cannot establish relationships between records or represent a many-to-many relationship. It is only for computed fields.
Question 6
Universal Containers is developing a new Lightning web component for their marketing department. They want to ensure that the component is fine-tuned and provides a seamless user experience.
What are some benefits of using the Lightning Component framework?
Answer : A
Question 7
A developer identifies the following triggers on the Expense _c object:
The triggers process before delete, before insert, and before update events respectively.
Which two techniques should the developer implement to ensure trigger best practices are followed?
Choose 2 answers
Answer : A, C
A . Unify all three triggers in a single trigger on the Expense__c object that includes all events:
Salesforce best practices recommend having only one trigger per object to avoid redundancy and conflicts.
By combining all the events (before delete, before insert, and before update) into a single trigger, the developer can manage the logic in an organized and maintainable manner.
This also simplifies debugging and ensures that the trigger logic executes in a predictable order.
C . Create helper classes to execute the appropriate logic when a record is saved:
Using helper classes allows for a clean separation of concerns. The trigger becomes a dispatcher that delegates logic to dedicated classes.
For example, you can create methods like applyDefaultsToExpense(), validateExpenseUpdate(), and deleteExpense() in a helper class and invoke them from the trigger.
This improves reusability, readability, and testability of the code.
Why not the other options?
B . Unify the before insert and before update triggers and use Flow for the delete action:
While Flow is a powerful tool, it is not ideal for deleting records or replacing Apex trigger functionality, especially when triggers already exist for other events.
D . Maintain all three triggers on the Expense__c object but move the Apex logic out of the trigger definition:
Maintaining multiple triggers on the same object can lead to conflicts and execution order issues, even if the logic is moved to helper classes.
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