DEX-450 試験問題と解答 - 模擬練習 - 練習問題・模擬試験

Question No : 1
When can a developer use a custom Visualforce page in a Force.com application? (Choose 2)

A.To generate a PDF document with application data
B.To create components for dashboards and layouts
C.To deploy components between two organizations
D.To modify the page layout settings for a custom object

正解:

Question No : 2
A developer writes a SOQL query to find child records for a specific parent.
How many levels can be returned in a single query?

A.1
B.7
C.5
D.3

正解:

Question No : 3
A reviewer is required to enter a reason in the comments field only when a candidate is recommended to be hired.
Which action can a developer take to enforce this requirement?

A.Create a required Visualforce component.
B.Create a formula field.
C.Create a required comments field.
D.Create a validation rule.

正解:

Question No : 4
A developer in a Salesforce org with 100 Accounts executes the following code using the Developer console: Account myAccount = new Account (Name = 'MyAccount'); Insert myAccount;
For (Integer x = 0; x < 150; x++)
{Account newAccount = new Account (Name='MyAccount' + x); try {Insert newAccount;} catch (Exception ex) {System.debug (ex);}} insert new Account (Name='myAccount');
How many accounts are in the org after this code is run?

A.101
B.100
C.102
D.252

正解:

Question No : 5
Which user can edit a record after it has been locked for approval? (Choose 2)

A.Any user with a higher role in the hierarchy
B.A user who is assigned as the current approver
C.Any user who approved the record previously
D.An administrator

正解:

Question No : 6
A developer wants to create a custom object to track Customer Invoices.
How should Invoices and Accounts be related to ensure that all Invoices are visible to everyone with access to an Account?

A.The Account should have a Master-Detail relationship to the Invoice.
B.The Invoice should have a Master-Detail relationship to the Account
C.The Account should have a Lookup relationship to the Invoice
D.The Invoice should have a Lookup relationship to the Account Previous

正解:

Question No : 7
When loading data into an operation, what can a developer do to match records to update existing records? (Choose 2)

A.Match an auto-generated Number field to a column in the imported file.
B.Match an external Id Text field to a column in the imported file.
C.Match the Name field to a column in the imported file.
D.Match the Id field to a column in the imported file.

正解:

Question No : 8
A developer needs to know if all tests currently pass in a Salesforce environment.
Which feature can the developer use? (Choose 2)

A.ANT Migration Tool
B.Workbench Metadata Retrieval
C.Salesforce UI Apex Test Execution
D.Developer Console

正解:

Question No : 9
What is the proper process for an Apex Unit Test

A.Query for test data using SeeAllData = true. Call the method being tested. Verify that the results are correct.
B.Query for test data using SeeAllData = true. Execute runAllTests(). Verify that the results are correct.
C.Create data for testing. Execute runAllTests(). Verify that the results are correct.
D.Create data for testing. Call the method being tested. Verify that the results are correct.

正解:

Question No : 10
What is a capability of formula fields? (Choose 3)

A.Generate a link using the HYPERLINK function to a specific record in a legacy system.
B.Display the previous values for a field using the PRIORVALUE function.
C.Return and display a field value from another object using the VLOOKUP function.
D.Determine if a datetime field has passed using the NOW function.
E.Determine which of three different images to display using the IF function.

正解:

Question No : 11
A Visualforce page has a standard controller for an object that has a lookup relationship to a parent object.
How can a developer display data from the parent record on the page?

A.By adding a second standard controller to the page for the parent record.
B.By using a roll-up formula field on the child record to include data from the parent record.
C.By using SOQL on the Visualforce page to query for data from the parent record.
D.By using merge field syntax to retrieve data from the parent record.

正解:

Question No : 12
A developer needs to provide a Visualforce page that lets users enter Product-specific details during a Sales cycle.
How can this be accomplished? (Choose 2)

A.Download a Managed Package from the AppExhange that provides a custom Visualforce page to modify.
B.Copy the standard page and then make a new Visualforce page for Product data entry.
C.Download an Unmanaged Package from the AppExchange that provides a custom Visualforce page to modify.
D.Create a new Visualforce page and an Apex controller to provide Product data entry.

正解:

Question No : 13
Which statement about change set deployments is accurate? (Choose 3)

A.They use an all or none deployment model.
B.They require a deployment connection.
C.They ca be used to transfer Contact records.
D.They can be used to deploy custom settings data.
E.They can be used only between related organizations.

正解:

Question No : 14
A developer creates an Apex class that includes private methods.
What can the developer do to ensure that the private methods can be accessed by the test class?

A.Add the TestVisible attribute to the Apex class
B.Add the SeeAllData attribute to the test methods.
C.Add the TestVisible attribute to the apex methods.
D.Add the SeeAllData attribute to the test class

正解:

Question No : 15
In which order does Salesforce execute events upon saving a record?

A.Before Triggers; Validation Rules; After Triggers; Assignment Rules; Workflow Rules; Commit
B.Validation Rules; Before Triggers; After Triggers; Workflow Rules; Assignment Rules; Commit
C.Before Triggers; Validation Rules; After Triggers; Workflow Rules; Assignment Rules; Commit
D.Validation Rules; Before Triggers; After Triggers; Assignment Rules; Workflow Rules; Commit

正解:

Salesforce DEX-450 問題練習