從Google Drive中免費下載最新的Fast2test Plat-Dev-301 PDF版考試題庫：https://drive.google.com/open?id=13w5ZXEjo40cIK-9omyL2PgrelehLa8Sp
隨著Plat-Dev-301考試的變化，Fast2test已經跟新了考試問題和答案，包括一些新增的問題，通過使用更新版本的Salesforce Plat-Dev-301考古題，您可以輕松快速的通過考試，還節約寶貴的時間。獲得Plat-Dev-301認證之后，您的職業生涯也將開始新的輝煌時期。購買我們的Salesforce Plat-Dev-301題庫資料可以保證考生一次性通過考試，這是值得大家信賴的題庫網站，可以幫大家減少考試成本，節約時間，是上班族需要獲取Plat-Dev-301認證的最佳選擇。
| Section | Objectives |
|---|---|
| Integration and APIs | - Platform events and messaging
|
| Data Modeling and Management | - Advanced data modeling
|
| Application Development | - Advanced Apex programming
|
| Testing and Deployment | - Deployment lifecycle
|
作為一位 Plat-Dev-301 考生而言，作好充分的準備可以幫助您通過考試。Fast2test 的 Plat-Dev-301 題庫覆蓋了最新的 Plat-Dev-301 考試指南及考試真題題型。Plat-Dev-301 隸屬于 Salesforce 認證考試科目。我們的 Plat-Dev-301 認證考題已經幫助很多考生通過考試，試題質量和考題的覆蓋率都有保證，保證考生權利不受任何損失。獲取 Plat-Dev-301 考試認證證書可以用來實施一些複雜多變的工程。
問題 #120
A developer sees test failures in the sandbox but not in production. No code or metadata changes have been actively made to either environment since the sandbox was created.
Which consideration should be checked to resolve the issue?
答案：B
解題說明：
If test failures are occurring in a sandbox but not in production and there have been no active code or metadata changes, it could be due to differences in the Salesforce release versions between the two environments. Sandboxes can be on preview instances which get upgraded to new releases before production instances. This can lead to differences in behavior and could affect test executions. Ensuring that both the sandbox and production are on the same release can resolve such issues. API version differences and parallel testing settings typically do not cause discrepancies if the code hasn't changed, and while using SeeAllData=true is generally not recommended due to its dependence on the organization's data, it's unlikely to be the cause if the issue is related to the environment rather than the data.
Sandbox Preview Instructions
Understand the Salesforce Release Process
問題 #121
Consider the following code snippet:
The Apex method is executed in an environment with a large data volume count for Accounts, and the query is performing poorly. Which technique should the developer implement to ensure the query performs optimally, while preserving the entire result set?
答案：D
解題說明：
When dealing with large data volumes in Salesforce and ensuring optimal performance for queries, it's important to choose an approach that both handles the data volume efficiently and retrieves the complete result set.
Option D is correct because using the Database.QueryLocator method is a best practice for handling large data volumes. It is typically used with batch Apex, which can process records in batches, thus reducing the likelihood of hitting governor limits. It's designed to handle very large data sets that would otherwise exceed normal SOQL query limits.
Option A is incorrect because creating a formula field doesn't improve the performance of the query. It simply creates a new field that combines existing data, but it does not inherently optimize the query execution.
Option B is incorrect because breaking down the query into two parts and joining them in Apex could potentially be less efficient and would require additional code to manage the combined result sets. This approach does not leverage the built-in Salesforce features designed to handle large data volumes.
Option C is incorrect because the @Future annotation makes the method execute asynchronously, but it does not help with query performance or large data volume management.
s:
Salesforce Documentation on Working with Very Large SOQL Queries: Working with Very Large SOQL Queries Salesforce Documentation on Using Batch Apex: Using Batch Apex
問題 #122
A developer is trying to decide between creating a Visualforce component or a Lightning component for a custom screen.
Which functionality consideration impacts the final decision?
答案：D
解題說明：
Visualforce can render pages as PDFs, which Lightning Components cannot do. This functionality is crucial if PDF rendering is required.
問題 #123
A developer is tasked with creating a Lightning web component that is responsive on various devices, Which two components should help accomplish this goal?
Choose 2 answers
答案：A,D
解題說明：
Lightning-layout and lightning-layout-item are components used in Lightning Web Components to create responsive grid layouts that adapt to the screen size of various devices.
Lightning Layout: Component Reference
Lightning Layout Item: Component Reference
問題 #124
A developer implemented a custom data table in a Lightning web component with filter functionality. However, users are submitting support tickets about long load times when the filters are changed. The component uses an Apex method that is called to query for records based on the selected filters.
What should the developer do to improve performance of the component?
答案：D
解題說明：
When faced with performance issues in a Lightning Web Component (LWC) due to SOQL query load times, the optimal approach is often to improve the query's selectivity. This can be achieved by using a selective SOQL query with a custom index. Salesforce can create custom indexes to improve the performance of queries that cannot be optimized through standard indexing. When a query is selective, it can efficiently retrieve records from the database using the index, thus reducing the query execution time and speeding up the component's performance when filters are changed. The other options (returning all records, using SOSL, or client-side caching) do not directly address the root cause of the performance issue, which is the need for a more efficient database operation.
Make SOQL Query Selective
Use of Indexes in SOQL Queries
問題 #125
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Plat-Dev-301最新題庫: https://tw.fast2test.com/Plat-Dev-301-premium-file.html
P.S. Fast2test在Google Drive上分享了免費的2026 Salesforce Plat-Dev-301考試題庫：https://drive.google.com/open?id=13w5ZXEjo40cIK-9omyL2PgrelehLa8Sp