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The Platform Developer II (PDII) practice test questions are customizable which means that the customers can customize the time and PDII exam questions types according to their needs. These Salesforce PDII Practice Tests are based on real based examination scenarios which help the students practice under real PDII exam questions pressure and learn to control it.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing, Debugging and Deployment | 18% | - Deployment strategies and tools - Debugging and error handling - Continuous integration and delivery - Advanced testing techniques |
| Topic 2: Integration and Web Services | 15% | - External objects and data sources - REST and SOAP integrations - API usage and limits - Data integration patterns |
| Topic 3: User Interface Development | 15% | - Lightning Web Components development - Component communication and reusability - Aura Components advanced usage - Visualforce advanced features |
| Topic 4: Business Logic and Process Automation | 25% | - Governor limits and performance optimization - Advanced triggers and Apex logic - Asynchronous processing (Batch, Queueable, Future) - Custom metadata and settings |
| Topic 5: Advanced Developer Fundamentals | 15% | - Advanced Apex coding best practices - System classes and utility methods - Sharing and security model implementation - Localization and internationalization |
| Topic 6: Data Modeling and Management | 12% | - Complex data modeling - SOQL and SOSL optimization - Data validation and consistency - Large data volume handling |
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NEW QUESTION # 113
Refer to the Lightning component below:
The Lightning Component allows users to click a button to save their changes and then redirects them to a different page.
Currently when the user hits the Save button, the records are getting saved, but they are not redirected.
Which three techniques can a developer use to debug the JavaScript?
Choose 3 answers
Answer: A,B,C
Explanation:
When debugging JavaScript in a Lightning Component, developers can utilize the following techniques:
* A. Use console.log() messages in the JavaScript: This is a standard debugging technique to log information to the browser console, which can help trace the execution flow or output variable values.
* B. Use the browser's dev tools to debug the JavaScript: Modern browsers come equipped with developer tools that can be used to set breakpoints, step through code, and inspect variables at runtime.
* C. Enable Debug Mode for Lightning components for the user: Enabling Debug Mode for users provides more detailed error messages and unminified versions of client-side libraries, making it easier to debug issues.
Using the Developer Console to view checkpoints (Option D) and debug logs (Option E) is more relevant for Apex debugging rather than JavaScript.
References:
Salesforce Documentation on Debugging Lightning Components: Debugging
NEW QUESTION # 114
Refer to the code snippet below:
A custom object called Credit_Memo__c exists in a Salesforce environment. As part of a new feature development that retrieves and manipulates this type of record, the developer needs to ensure race conditions are prevented when a set of records are modified within an Apex transaction.
In the preceding Apex code, how can the developer alter the query statement to use SOQL features to prevent race conditions within a transaction?
Answer: A
Explanation:
To prevent race conditions during an Apex transaction, the SOQL query can be modified to include the "FOR UPDATE" keyword. This keyword locks the records that are returned by the query, preventing other transactions from modifying them until the current transaction is complete. This ensures that the retrieved records cannot be changed by another process before the current transaction is completed, thus preventing race conditions. The correct option to use in the code snippet provided is:
[SELECT Id, Name, Amount__c FROM Credit_Memo__c WHERE Customer_Id__c = :customerId LIMIT 50 FOR UPDATE] This will lock up to 50 records of Credit_Memo__c with the specified Customer_Id__c for the duration of the transaction.
References:
FOR UPDATE
Preventing Record Update Conflicts
NEW QUESTION # 115
A Visuzlforce page loads slowly due to the large amount of data it displays.
Which strategy can a developer use to improve the performance?
Answer: B
Explanation:
The best strategy to improve the performance of the Visualforce page that loads slowly due to the large amount of data it displays is to use lazy loading to load the data on demand, instead of in the controller's constructor. Lazy loading is a technique that defers the loading of data until it is needed, which reduces the initial page load time and improves the user experience. The developer can use JavaScript and AJAX to implement lazy loading, such as using the apex:actionFunction or apex:remoteObjects tags. Using an apex:actionPoller in the page to load all of the data asynchronously will not improve the performance, as it will still load all of the data at once, but in a repeated manner. Using the transient keyword for the List variables used in the custom controller will prevent the variables from being saved in the view state, but it will not reduce the query time or the render time. Using JavaScript to move data processing to the browser instead of the controller will not improve the performance, as it will still transfer all of the data to the browser, which might cause memory issues or browser crashes. Reference: [Lazy Loading of Data in Visualforce Page], [Visualforce Developer Guide]
NEW QUESTION # 116
Which code snippet processes records in the most memory efficient manner, avoiding governor limits such as
"Apex heap size too large"?
Answer: A
Explanation:
When processing large data volumes in Apex, the "Heap Size" limit (6MB for synchronous, 12MB for asynchronous) is a common bottleneck. This limit tracks the amount of memory consumed by objects and variables currently in scope.
Option B utilizes the SOQL For Loop pattern. This is the most memory-efficient approach because it processes records in "chunks" of 200 at a time using internal query locators. Instead of loading the entire result set (potentially thousands of records) into a single collection in memory, the SOQL For Loop iterates through the records without ever holding the full set in the heap. This prevents the "Apex heap size too large" error when dealing with high-volume queries.
In contrast, Options A, C, and D all involve assigning the entire query result to a collection (a Map or List) before the loop begins. This immediately consumes heap space proportional to the number of records and fields retrieved. If the query returns a large number of records, these collections will quickly exceed the heap limit before the first line of the loop even executes. Therefore, for bulk data processing where memory efficiency is the priority, the inline SOQL For Loop (Option B) is the standard best practice.
NEW QUESTION # 117
Universal Containers wants to notify an external system in the event that an unhandled exception occurs when their nightly Apex batch job runs.
What is the appropriate publish/subscribe logic to meet this requirement?
Answer: D
Explanation:
To notify an external system about an unhandled exception in a batch job, the appropriate approach is to have the external system subscribe to a custom Platform Event that gets published using EventBus.publish(). When an exception occurs, the batch job can publish this event which the external system can listen for and respond to accordingly. References:
Platform Events Developer Guide
NEW QUESTION # 118
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