Free Salesforce PDI Practice Exam with Questions & Answers | Set: 5

Since theCaseandDefect__cobjects have aPrivateorganization-wide default (OWD), their records must be explicitly shared for a user to gain access to the relatedCase_Defect__crecord. Sharing both parent records ensures that the user can access the junction object and the associated parent objects.

Comprehensive and Detailed Explanation From Exact Extract:

A (Correct):AnApproval Processcan lock a record (making it read-only) once the record meets certain criteria like stage = Closed/Won.

B (Correct):AValidation Rulecan prevent users from saving changes when the stage is Closed/Won, by throwing an error.

Example validation formula:

text

CopyEdit

AND(ISCHANGED(StageName), ISPICKVAL(StageName, "Closed Won"))

Incorrect options:

C:Before triggers run before the record is saved but don’t prevent UI-level edits unless combined with DML rollbacks or errors.

D:Auto-response rules are for sending emails, not restricting edits.

The@RestResourceannotation exposes an Apex class as a RESTful web service. TheurlMappingparameter defines the endpoint's URL.

Marking the field as required on the field definition ensures that the field is always populated during record creation or update. This enforces the rule at the database level.

Other Options:

Option A: Setting a default value ensures a value is present initially but does not enforce a value during updates.

Option B: Writing a trigger is less efficient and adds unnecessary complexity.

Option C: Marking the field as required on the page layout is UI-specific and does not enforce the rule during API or code-based operations.

Field Level Requirements

Infrastructure as a Service (IaaS)is the best model for the scenario described because it provides on-demand access to compute, storage, and networking resources that are ideal for a scalable server cluster. IaaS allows the engineering team to rent infrastructure resources without having to invest in physical hardware, making it perfect for temporary or fluctuating workloads, such as scalability testing.

Key Characteristics of IaaS:

Full control over the operating systems and applications running on the servers.

Flexible resource allocation to support high scalability.

Ideal for custom software testing where specific server configurations may be needed.

Why not the other options?

PaaS (Platform as a Service):While PaaS is excellent for application development and deployment, it abstracts the infrastructure layer, which would limit the engineering team's control over the cluster's configuration.

SaaS (Software as a Service):SaaS delivers fully managed applications, not infrastructure or testing environments. It’s irrelevant for this use case.

BaaS (Backend as a Service):BaaS is tailored to mobile or web application backend development, providing APIs and pre-built services, not infrastructure for a server cluster.

Platform Developer References:

While this question is broader than Salesforce-specific concepts, understandingIaaS vs. PaaSis relevant when working with Salesforce development. For example:

Salesforce operates as aPaaS(e.g., Force.com platform), allowing developers to build and deploy applications without managing underlying servers.

Testing scalability and performance at an infrastructure level (as in the question) would fall underIaaSconcepts, which Salesforce developers might encounter when integrating external services or infrastructure like AWS, Azure, or Google Cloud.

This foundational knowledge complements your understanding of cloud services in the Salesforce ecosystem.

Option B: To update a junction object, the user needsRead/Writeaccess to the primary relationship object.

Option C: The user must also haveRead/Writeaccess on the junction object itself.

Junction Objects Documentation

To notify the parent component when the child component’sNextbutton is clicked, the child component can dispatch a custom event. The parent component listens to this event and handles navigation accordingly.

Global Access Modifier:

When building managed packages, methods and classes that need to be accessible outside the package namespace must be declaredglobal.

Publicrestricts access to within the namespace.

Why Not Other Options?

B:Publiclimits access to within the namespace.

CandD: Mixingpublicandglobalincorrectly doesn't meet the requirement for external accessibility.

Option A: Using variable binding eliminates the need for concatenating dynamic values in the query, which is the safest approach.

Option B: UsingString.escapeSingleQuotesensures special characters are handled safely, reducing the risk of SOQL injection.

Not Suitable:

Option C: Whilewith sharingensures sharing rules are applied, it does not prevent SOQL injection.

Option D: Regular expressions are not a reliable method for sanitizing input.

Preventing SOQL Injection

B: Using partial DML statements (e.g.,Database.insert(list, false)) allows only valid records to be committed while identifying invalid ones, avoiding runtime errors.

D: TheDatabase.Savepointmethod ensures transactional control by allowing rollback to a specific savepoint if an error occurs.

Why not other options?

A: The@ReadOnlyannotation is for read-only operations and would not allow DML operations.

C: TheSystem.Limitclass helps monitor limits but does not directly control transaction behavior.

Best Practices for Apex Transactions