最新的Salesforce Developers認證 Plat-Dev-201考試題庫

問題1

Universal Containers has a Visualforce page that displays a table of every Container_c.
being ....... Is falling with a view state limit because some of the customers rent over 10,000 containers. What should a developer change about the Visualforce page to help with the page load errors?

A. Implement pagination with an OffsetController.

B. Use Lazy loading and a transient List variable.

C. Implement pagination with a StandardSetController,

D. Use JavaScript remoting with SOQL Offset.

正確答案: C

問題2

Management asked for opportunities to be automatically created for accounts with annual revenue greater than $1,000,000. A developer created the following trigger on the Account object to satisfy this requirement.

Users are able to update the account records via the UI and can see an opportunity created for high annual revenue accounts. However, when the administrator tries to upload a list of 179 accounts using Data Loader, It fails with system. Exception errors. Which two actions should the developer take to fix the code segment shown above? Choose 2 answers

A. Check if all the required fields for Opportunity are being added on creation.

B. Move the DML that saves opportunities outside the for loop.

C. Query for existing opportunities outside the for loop.

D. Use Database.query to query the opportunities.

正確答案: B,C

問題3

A developer created these three Rollup Summary fields in the custom object, Project_ct,

The developer is asked to create a new field that shows the ratio between rejected and approved timesheets for a given project.
Which should the developer use to Implement the business requirement in order to minimize maintenance overhead?

A. Record-triggered Flow

B. Formula field

C. Apex Trigger

D. Process Builder

正確答案: B

問題4

Which statement should be used to allow some of the records in a list of records to be inserted if others fail to be inserted?

A. insert records

B. Database.insert (records, false)

C. Database.insert (records, true)

D. insert (records, false)

正確答案: B

問題5

Which three code lines are required to create a Lightning component on a Visualforce page?
Choose 3 answers

A. $Lightning.useComponent

B. <apex:slds/>

C. <apex:includeLightning/>

D. $Lightning.createComponent

E. $Lightning.use

正確答案: C,D,E

問題6

A developer created this Apex trigger that calls MyClass,myStartmethod:

The developer creates a test method that calls MyClase,myStartmethod directly, resulting in 81% overall code coverage.
What happens wtier the developer tries to deploy the ... and two classes to production, assuming no other code exists?

A. The deployment fails because the Apr-MgQM has no code coverage.

B. The deployment passes became the Apex code has the requited 75% code coverage.

C. The deployment passes because both classes and the trigger were included ki the deployment.

D. The deployment tails because no assertions mett made in the lest method.

正確答案: A

問題7

Consider the following code snippet for a Visualforce page that is launched using a Custom Button on the Account detail page layout.

When the Save button is pressed the developer must perform a complex validation that involves multiple objects and, upon success, redirect the user to another Visualforce page.
What can the developer use to meet this business requirement?

A. Validation rule

B. Custom controller

C. Apex trigger

D. Controller extension

正確答案: D

問題8

A developer needs to create a baseline set of data (Account, Contacts, Products, Assets) for an entire suite allowing them to test independent requirements for various types of Salesforce Cases. Which approach can efficiently generate the required data for each unit test?

A. Create test data before Test.startTest in the unit test.

B. Use &TestSteup with a void method.

C. Create a mock using the Stub APL.

D. Add $ IsTest (seeAllDatatrue) at the start of the unit test class.

正確答案: B

問題9

A developer created these three Rollup Summary fields in the custom object, Project__c:

The developer is asked to create a new field that shows the ratio between rejected and approved timesheets for a given project.
Which should the developer use to implement the business requirement in order to minimize maintenance overhead?

A. Apex trigger

B. Formula field

C. Record-triggered flow

D. Field Update actions

正確答案: B

問題10

Which three steps allow a custom SVG to be included in a Lightning web component? Choose 3 answers

A. Reference the getter in the HTML template.

B. Import the static resource and provide a getter for it in JavaScript.

C. Upload the SVG as a static resource.

D. Reference the import in the HTML template.

E. Import the SVG as a content asset file.

正確答案: A,B,C

問題11

A custom picklist field, Food_Preference__c, exist on a custom object. The picklist contains the following options: 'Vegan','Kosher','No Preference'. The developer must ensure a value is populated every time a record is created or updated. What is the most efficient way to ensure a value is selected every time a record is saved?

A. Set a validation rule to enforce a value is selected.

B. Mark the field as Required on the field definition.

C. Mark the field as Required on the object's page layout.

D. Set "Use the first value in the list as the default value" as True.

正確答案: B

問題12

Refer to the following code snippet for an environment that has more than 200 Accounts belonging to the Technology' industry:

which three statements are accurate about debug logs? Choose 3 answers

A. System debug logs are retained for 24 hours.

B. Debug log levels are cumulative, where FINE log level includes all events logged at the DEBUG, INFO, WARN, and ERROR levels.

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

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

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

正確答案: A,C,D

問題13

Which two sfdx commands can be used to add testing data to a Developer sandbox?

A. Forced: data:async:upsert

B. Forced: data: tree: upsert

C. Forced: data:bulk:upsert

D. Forced: data: object :upsert

正確答案: B,C

問題14

A developer created a trigger on the Account object. While testing the trigger, the developer sees the error message 'Maximum trigger depth exceeded'.
What could be the possible causes?

A. The trigger is a a helper class.

B. The developer does not have the correct user permission.

C. The trigger does not have sufficient code coverage.

D. The trigger is getting executed multiple times.

正確答案: D

問題15

A developer is creating an app that contains multiple Lightning web components. One of the child components is used for navigation purposes. When a user click a button called.. component, the parent component must be alerted so it can navigate to the next page.
How should this be accomplished?

A. Update a property on the parent.

B. Create a custom event.

C. Fire a notification.

D. Call a method in the Apex controller.

正確答案: B

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