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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Objectives
Testing and Deployment	- Deployment lifecycle 1. Change sets and deployment tools 2. Version control and CI/CD concepts - Testing strategies 1. Test data creation and mocking 2. Code coverage and quality practices
Integration and APIs	- External system integration 1. REST and SOAP API usage 2. Callouts from Apex - Platform events and messaging 1. Event-driven architecture 2. Change Data Capture concepts
Data Modeling and Management	- Data access and security 1. Sharing rules and Apex-managed sharing 2. Security enforcement in Apex - Advanced data modeling 1. Complex relationships and schema design 2. Large data volume considerations
Application Development	- Advanced Apex programming 1. Apex design patterns and best practices 2. Dynamic Apex and metadata-driven development 3. Exception handling and debugging strategies - Asynchronous processing 1. Batch Apex and Queueable Apex 2. Future methods and limits considerations 3. Scheduled Apex

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q157-Q162):

NEW QUESTION # 157
An environment has two Apex triggers: an after-update trigger on Account and an after-update trigger on Contact.
The Account after-update trigger fires whenever an Account's address is updated, and it updates every associated Contact with that address. The Contact after-update trigger fires on every edit, and it updates every Campaign Member record related to the Contact with the Contact's state.
Consider the following: A mass update of 200 Account records' addresses, where each Account has 50 Contacts. Each Contact has one Campaign Member. This means there are 10,000 Contact records across the Accounts and 10,000 Campaign Member records across the contacts.
What will happen when the mass update occurs?

A. The mass update will fail, since the two triggers fire in the same context, thus exceeding the number of records processed by DML statements.
B. There will be no error, since each trigger fires within its own context and each trigger does not exceed the limit of the number of records processed by DML statements.
C. There will be no error and all updates will succeed, since the limit on the number of records processed by DML statements was not exceeded.
D. The mass update of Account address will succeed, but the Contact address updates will fail due to exceeding number of records processed by DML statements.

Answer: A

Explanation:
In this scenario, the governor limit for DML statements (150 DML operations and 10,000 DML rows per transaction) will be exceeded because the updates will cascade across related objects, significantly multiplying the number of records processed.
Apex Developer Guide

NEW QUESTION # 158
When developing a Lightning web component, which setting displays lightninglayout-items im one column on small devices, such as mobile phones, and in two columns on tablet-size and desktop-size screens?

A. Set size="12" tablet-device-size="6"
B. Set size="6" mobile-device-size="12"
C. Set size="6" small-device-size="12"
D. Set size="12" medium-device-size="6"

Answer: D

Explanation:
To display lightning-layout-items in one column on small devices and in two columns on larger devices, you should set the size attribute to "12" for small devices and the medium-device-size attribute to "6". This ensures that on small devices each item takes the full width, and on medium or larger devices, items take up half the width.

NEW QUESTION # 159
Universal Containers develops a Visualforce page that requires the inclusion of external JavaScript and C55 files. They want to ensure efficient loading and caching of the page.
Which feature should be utilized to achieve this goal?

A. RemoteAction
B. PageBlockTable
C. Static resources
D. ActionFunction

Answer: C

Explanation:
Static resources are ideal for efficient loading and caching of external files in Visualforce. They allow bundling and minimizing HTTP requests.

NEW QUESTION # 160
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

A. Use console.log () messages in the JavaScript.
B. Use Developer Console to view checkpoints.
C. Use Developer Console to view the debug log.
D. Enable Debug Mode for Lightning components for the user.
E. Use the browser's dev tools to debug the JavaScript.

Answer: A,D,E

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.
Salesforce Documentation on Debugging Lightning Components: Debugging

NEW QUESTION # 161
An Apex trigger and Apex class increment a counter, Edit __C, any time the Case is changed.

A)

B)

C)

D)

A. Option C
B. Option A
C. Option B
D. Option D

Answer: A

NEW QUESTION # 162
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