Salesforce-Platform-Developer Practice Test Questions

Explanation:

Let’s look at each option to see which three will work best:

Option A: Create a Dynamic Form
A Dynamic Form lets the developer build a flexible form on a record page, like the Account record. It can show different fields based on rules, such as the user’s job role, using features like field visibility rules. This fits the need to display different fields depending on the role.
It’s a great start for creating the form on the Account page.

Option B: Add a Dynamic Action to the Account Record Page
A Dynamic Action is a button or link on the record page that can start a process, like creating a custom object record. By adding this action to the Account Record Page, users can use the form to create the new record. This ties the form to the Account and makes it easy to access.
It’s perfect for making the functionality available on the right page.

Option C: Create a Custom Permission for the users
A Custom Permission lets the developer control who can use a feature. By creating a permission and assigning it to the small group of users, the developer can restrict access to the form and action. This can be combined with profiles or permission sets to limit who sees or uses it.
This ensures only the right users can access the feature.

Option D: Add a Dynamic Action to the Users' assigned Page Layouts
Page Layouts control how records look for users, but Dynamic Actions are tied to Lightning Record Pages, not traditional layouts. Adding an action here wouldn’t work well because it’s not the modern way to handle this in Salesforce Lightning.
This option is outdated and less effective for this requirement.

Option E: Create a Lightning web component
A Lightning web component is a custom piece of code that can build a form. While it could work, it requires more effort to code, test, and maintain compared to using Dynamic Forms, which are built into Salesforce. It’s also harder to adjust fields based on roles without extra work.
This is overkill when simpler tools like Dynamic Forms can do the job.

Why A, B, and C?
Create a Dynamic Form (A): This builds the form and lets it show different fields based on the user’s job role using built-in rules.
Add a Dynamic Action to the Account Record Page (B): This adds a button on the Account page to start the form and create the custom object record.
Create a Custom Permission for the users (C): This limits the feature to the small group of users by controlling who can see or use the action and form.

Together, these three steps meet all the requirements without extra complexity. The developer can set up the form and action in the Lightning App Builder and use permissions to restrict access, keeping everything easy to manage.

Example Idea:
Imagine the form is like a worksheet on the Account page. For a manager, it shows extra fields like budget details, but for a team member, it shows only basic info. The Dynamic Form handles this switch, the Dynamic Action starts the worksheet, and the Custom Permission makes sure only a few users (like managers) can see it.

Reference:
Salesforce Documentation: Dynamic Forms (explains how to create flexible forms).
Salesforce Documentation: Custom Permissions (covers restricting access).
Salesforce Documentation: Actions in Lightning (details on adding actions to record pages).

Summary:
The developer should create a Dynamic Form (A), add a Dynamic Action to the Account Record Page (B), and create a Custom Permission for the users (C). These three steps will build the form, make it accessible, and limit it to the right users.

Explanation:

Why Option C is Correct:
The code structure in Option C follows all the mandatory requirements for a SOAP web service class in Salesforce:

1. global class WebServiceClass: A class containing web service methods must be declared as global. This makes the class accessible outside of your Salesforce org's namespace, which is a requirement for any external application to call it.

2. webservice static String updateRecords(): This is the correct syntax for the method that will be exposed as a SOAP endpoint.
→ The webservice keyword is mandatory to expose the method.
→ Web service methods must be declared static.
→ The method must be defined as global or public. (While public works, global is often used for consistency as the class itself is global).

3. private Boolean helperMethod(): This is a perfectly valid way to include a helper method. By declaring it as private, it is hidden from the external web application and can only be used within the class itself. This is a best practice for encapsulation.

❌ Why the Other Options Are Incorrect:

Option A:
→ global with sharing class WebServiceClass → The global modifier is correct.
→ global String updateRecords() → This is incorrect. The method is missing the critical webservice keyword and is not declared as static. Without webservice, it will not be exposed as a SOAP endpoint.
→ global Boolean helperMethod() → While technically possible, making a helper method global unnecessarily exposes it as a public API, which is a bad practice. It should be private.

Option B:
webservice class WebServiceClass → This is fundamentally incorrect. The webservice keyword is only valid for methods, not for classes. A class itself cannot be declared as webservice. This will cause a compilation error.

Option D:
webservice class WebServiceClass → This has the same critical error as Option B. You cannot use webservice as a modifier for a class. This is invalid syntax and will fail to compile.

Reference:
Apex Developer Guide - Defining Apex Web Services: This is the primary source. It explicitly states:
→ "Use the webservice keyword to define these methods."
→ "You must declare web service methods as static."
→ "Any class containing a method defined with the webservice keyword must be declared as global."
→ "If a method is defined with the webservice keyword, you must also declare the method as static."

Explanation:

- Validation Rules enforce business logic by ensuring data integrity before records are saved. They allow declarative enforcement of conditions without requiring code.
- Record-Triggered Flows automate business processes by executing logic when records are created, updated, or deleted. They provide a powerful declarative way to implement complex workflows without Apex.

❌ Why the other options are incorrect:
B. Remote Actions

❌ Imperative Apex code used for invoking controller methods from Visualforce
Not declarative

D. Batch Jobs

❌ Built using Apex code
Used for processing large volumes of data asynchronously
Not a declarative solution

Key Takeaways:

✅ Validation Rules (A) + Record-Triggered Flows (C) = 100% declarative business logic.
🚫 Remote Actions (B) and Batch Jobs (D) require code.

Explanation:

- StandardSetController is specifically designed for handling large datasets efficiently in Visualforce pages.
- It provides built-in pagination, reducing the amount of data stored in the view state and improving page performance.
- Since customers rent over 10,000 containers, loading all records at once would exceed the 170KB view state limit. Pagination ensures only a subset of records is loaded at a time.

✔️ Why D. StandardSetController is the best solution:

✅ Built-in support for pagination in Visualforce pages
✅ Handles view state efficiently
✅ Requires no custom code for managing offset, limits, or record counts
✅ Works well with Visualforce apex:pageBlockTable or apex:repeat

Key Takeaways:

✅ StandardSetController (D) is the Salesforce-recommended solution for large datasets.
🚫 Avoid manual offset (B/C) or transient hacks (A).

Explanation:

- Salesforce CLI (SFDX CLI) is the best tool for automating tests in a CI/CD pipeline.
- It allows developers to run Apex tests using commands like:

sfdx force:apex:test:run -u sandboxAlias
- This ensures automated testing is integrated into the development workflow, reducing deployment failures.

❌ Why the other options are incorrect:
A. Force.com Toolkit

❌ Outdated and not suitable for modern CI/CD.
Not actively maintained or recommended by Salesforce.

C. Visual Studio Code

❌ It's an IDE, not a CI tool.
Used for local development but not for automating test execution.
D. Developer Console
❌ Only useful for manual testing and debugging.
Cannot be used in a CI pipeline or for automated deployments.

Key Takeaways:
✅ Salesforce CLI (B) is the only tool designed for automated testing in CI.
🚫 Avoid legacy (A) or manual (D) tools.

Explanation:

- Record-Triggered Flow (Fast Field Updates): This is the best declarative option for updating the Timezone field when the Postal Code changes. Since it runs before-save, it ensures efficient updates without requiring additional DML operations.
- Account Trigger: If more complex logic is needed (such as querying the PostalCodeToTimezone__c object dynamically), an Apex trigger provides flexibility for handling the update programmatically.

✔️ B. Fast Field Updates Record-Triggered Flow
✅ Declarative (no code)
✅ Can trigger on field change (Postal Code)
✅ Use Get Records to fetch timezone from PostalCodeToTimezone__c
✅ Use Update Records to update Timezone
✅ Fast Field Updates (before-save) improve performance by avoiding DML

✔️ D. Account Trigger

✅ Use Apex code to write custom logic
✅ Good choice if business logic is complex or performance needs are high
✅ Offers maximum flexibility, especially if future logic requires more branching or external calls

❌ Incorrect Options:
A. Approval Process
❌ Used to manage record approvals, not to trigger field updates based on data changes
C. Quick Actions

❌ Used for UI-based manual actions, not automatic data-driven updates
Key Takeaways:

✅ Record-Triggered Flow (B) = Best for declarative, low-maintenance updates.
✅ Account Trigger (D) = Best for complex logic or bulk operations.
🚫 Avoid Approval Process (A) or Quick Actions (C)—they don’t fit the use case.

Explanations:

A. Debug log levels are cumulative...

❌ Incorrect.
Log levels are NOT cumulative in Salesforce.
For example, selecting FINE logs only FINE-level events (not DEBUG, INFO, etc.).
Key Point: Each level must be explicitly set in the TraceFlag settings.

B. The maximum size of a debug log is 5 MB.

✅ Correct.
Salesforce enforces a 5 MB limit per debug log. If exceeded, the log is truncated.
Tip: Use selective logging (e.g., filters for classes/triggers) to stay within limits.

C. Only the 20 most recent debug logs for a user are kept.

✅ Correct.
Salesforce retains only the last 20 debug logs per user. Older logs are automatically deleted.
Note: Logs can be downloaded or deleted manually to free space.

D. Debug logs can be set for specific users, classes, and triggers.

✅ Correct.
Debug logs are configurable via TraceFlags, which can target:
Specific users (e.g., your own user for testing).
Specific Apex classes or triggers (to narrow down debugging).
How to Set: Setup → Debug Logs → Add Trace Flags.

E. System debug logs are retained for 24 hours.

❌ Incorrect.
Debug logs are retained indefinitely (until the 20-log limit is reached).
Exception: Org-wide monitoring logs (not user debug logs) may have retention policies.

Explanation:

Lightning Web Components (LWCs) can access a variety of Salesforce-managed resources. Here's a breakdown of what's correct:

✔️ A. SVG resources
✅ True
LWCs can use custom SVGs (either inline or from static resources).
You can embed them in templates or use them as part of component branding.

✔️ C. Content asset files
✅ True
Content assets (uploaded via Salesforce CMS or Files) can be referenced in LWCs using ContentAsset or by constructing public URLs.

✔️ D. Static resources
✅ True
You can import static resources (like images, CSS, JS, or fonts) using:
import myResource from '@salesforce/resourceUrl/resourceName';

❌ Incorrect Options:

B. Third-party web components
❌ False
LWC doesn’t natively support importing external web components unless wrapped manually in LWC or exposed via static resources — and they must follow strict security policies.

E. All external libraries
❌ False
You can use some external libraries by loading them via static resources, but not all are supported due to Locker Service/security restrictions.
External libraries must be manually loaded using loadScript() or loadStyle().

Explanation:
To enforce field-level security (FLS) automatically when building forms in a Lightning Web Component (LWC), the developer should use:

inside a

Why this is important:

lightning-input-field automatically respects FLS:

If a user doesn't have read access, the field is hidden
If a user has read-only access, the field is disabled
If a user has read/write access, the field is editable

This ensures that only the appropriate fields are shown or editable based on user permissions, without writing custom logic.

❌ Why the other options are incorrect:

A. force-input-field
❌ Not a valid LWC component — likely a confusion with older Aura naming

B. ui-input-field
❌ Part of the Aura UI namespace, deprecated and not available in LWC

C. aura-input-field
❌ Also Aura framework-specific, not usable in Lightning Web Components

Explanation:

The provided Apex code performs a SOQL query inside a for loop, which is a well-known anti-pattern in Salesforce development due to its governor limits.

In this code:

for (Id leadId : leadIds) {
result.add([SELECT FIELDS(ALL) FROM Lead WHERE Id = :leadId]);
}

A SOQL query is executed once for each lead ID.

If leadIds contains more than 100 items, it exceeds the governor limit of 100 SOQL queries per transaction, causing a runtime exception.

🔧 Best Practice Fix:

Use bulk querying instead of querying inside the loop:

public static List obtainAllFields(Set leadIds) {
return [SELECT FIELDS(ALL) FROM Lead WHERE Id IN :leadIds];
}

This executes just one query, no matter how many IDs are passed in.

❌ Why other options are incorrect:

A. Avoid executing queries without a limit clause
Not necessary when querying by specific IDs — the ID filter already limits the result.

B. Avoid returning an empty List of records
Returning an empty list is safe and standard if no records match — not a best practice violation.

C. Avoid using variables as query filters
Using variables (e.g., :leadIds) is best practice for dynamic and safe queries — this option is incorrect.