DEX-450問題集、Salesforce実際の試験問題

質問 1

A developer created a trigger on the Account object and wants to test if the trigger is properly bulkified. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code?
Choose 2 answers

A. Use the @isTest (seeAllData=true) annotation in the test class.

B. Use the @isTest (isParallel=true) annotation in the test class.

C. Create a static resource containing test data.

D. Use Test, loadData to populate data in your test methods.

正解: C,D

質問 2

A team of developers is working on a source-driven project that allows them to work independently, with many different org configurations.
Which type of Salesforce orgs should they use for their development?

A. Scratch orgs

B. Developer orgs

C. Developer sandboxes.

D. Full Copy sandboxes

正解: A

質問 3

What are two considerations for deploying from a sandbox to production?
Choose 2 answers

A. All triggers must have at least one line of test coverage.

B. At least 75% of Apex code must be covered by unit tests.

C. Should deploy during business hours to ensure feedback can be quickly addressed.

D. Unit tests must have calls to the System.assert method.

正解: A,B

質問 4

Which two settings must be defined In order to update a record of a junction object?
Choose 2 answers

A. Read/Write access on the junction object

B. Read access on the primary relationship

C. Read/Write access on the primary relationship

D. Read/Write access on the secondary relationship

正解: C,D

質問 5

What can be used to override the Account's standard Edit button for Lightning Experience?

A. Lightning page

B. Lightning flow

C. Lightning component

D. Lightning action

正解: C

質問 6

A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of the new Apex helper class.
Change Set deployment to production fails with the test coverage warning:
"Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required." What should the developer do to successfully deploy the new Apex trigger and helper class?

A. Run the tests using the Run All Tests' method.

B. Increase the test class coverage on the helper class.

C. Create a test class and methods to cover the Apex trigger.

D. Remove the failing test methods from the test class

正解: C

質問 7

What is a considerations for running a flow in debug mode?

A. Callouts to external are not when debugging a flow.

B. When debugging a schedule-triggered flow, the flow starts only for one record.

C. DML operations will be rolled back when the debugging ends.

D. Clicking Pause allows an element to be replaced in the flow.

正解: A

質問 8

A developer has identified a method in an Apex class that performs resource intensive actions in memory by iterating over the result set of a SOQL statement on the account. The method also performs a DML statement to save the changes to the database.
Which two techniques should the developer implement as a best practice to ensure transaction control and avoid exceeding governor limits'* Choose 2 answers

A. Use the System.limit class to monitor the current CPU governor limit consumption.

B. Use partial DML statements to ensure only valid data is committed.

C. Use the @ReadOnly annotation to bypass the number of rows returned by a SOQL.

D. Use the Database.Savepoint method to enforce database integrity.

正解: A,D

質問 9

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 clicks a button called Next in the child component, the parent component must be alerted so it can navigate to the next page.
How should this be accomplished?

A. Create a custom event.

B. Call a method in the Apex controller.

C. Update a property on the parent.

D. Fire a notification.

正解: A

質問 10

Universal Containers hires a developer to build a custom search page to help users find the Accounts they want. Users will be able to search on Name, Description, and a custom comments field.
Which consideration should the developer be aware of when deciding between SOQL and SOSL?
Choose 2 answers

A. SOSL is able to return more records.

B. SOQL Is faster for text searches.

C. SOQL is able to return more records

D. SOSL is faster for text searches.

正解: C,D

質問 11

Which scenario is valid for execution by unit tests?

A. Load data from a remote site with a callout.

B. Set the created date of a record using a system method.

C. Execute anonymous Apex as a different user.

D. Generate a Visualforce PDF with getcontentaAsPDF ().

正解: B

質問 12

The following code snippet is executed by a Lightning web component in an environment with more than 2,000 lead records:

Which governor limit will likely be exceeded within the Apex transaction?

A. Total number of SOOL quires issued

B. Total number of DML statements issued

C. Total number of records processed as a result of DML statements

正解: C

質問 13

Universal Containers decided to transition from Classic to Lightning Experience. They asked a developer to replace a JavaScript button that was being used to create records with prepopulated values.
What can the developer use to accomplish this?

A. Validation rules

B. Record triggered flows

C. Quick Actions

D. Apex triggers

正解: C

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience - DEX-450 模擬練習