DEX-450無料問題集「Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience」

質問 1

A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Within the class, the developer identifies the following method as a security threat:

What are two ways the developer can update the method to prevent a SOQL injection attack?
Choose 2 answers

（A）Use a regular expression expression on the parameter to remove special characters,

（B）Use the @Readonly annotation and the with sharing keyword on the class

（C）Use variable binding and replace the dynamic query with a static SOQL.

（D）Use the escapeSingleQuotes method to sanitize the parameter before its use.

正解：C、D 解答を投票する

質問 2

Universal Containers wants to back up all of the data and attachments in its Salesforce org once a month.
Which approach should a developer use to meet this requirement?

（A）Define a Data Export scheduled

（B）Schedule a report.

（C）Create a Schedulable Apex class.

（D）Use the Data Loader command line.

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

What should a developer use to fix a Lightning web component bug in a sandbox?

（A）Execute Anonymous

（B）Developer Console

（C）Force.com IDE

（D）VS Code

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

A custom picklist field, Food _Preference_ c, exists 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 optimal way to ensure a value is selected every time a record is saved?

（A）Write an Apex trigger to ensure a value is selected.

（B）Mark the field as Required on the object's page layout.

（C）Set "Use the first value in the list as the default value" to True.

（D）Mark the field as Required on the field definition.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

A developer created a new after insert trigger on the Lead object that creates Task records for each Lead.
After deploying to production, an existing outside integration that inserts Lead records in batches to Salesforce is occasionally reporting total batch failures being caused by the Task insert statement. This causes the integration process in the outside system to stop, requiring a manual restart.
Which change should the developer make to allow the integration to continue when some records in a batch cause failure due to the Task insert statement, so that manual restarts are not needed?

（A）Use the Database method with allOrNone set to false.

（B）Deactivate the trigger before the integration runs.

（C）Use a try-catch block after the insert statement,

（D）Remove the Apex class from the integration user's profile,

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

A developer is asked to write helper methods that create test data for unit tests.

What should be changed in the TestUtils class so that its methods are only usable by unit test methods?

（A）Remove static from line 03.

（B）Add @1sTest above line 01.

（C）Change public to private on line 01.

（D）Add @IsTest above line 03.

正解：D 解答を投票する

質問 7

Universal Containers recently transitioned from Classic to Lightning Experience.
One of its business processes requires certain values from the Opportunity cbject to be sent via an HTTP REST callout to its external order management system when the user presses a custom button on the Opportunity detail page. Example values are as follows:
* Name
* Amount
* Account
Which two methods should the developer implement to fulfill the business requirement?
Choose 2 answers

（A）Create a custom Visualforce quick action that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.

（B）Create a Remote Action on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity Is updated.

（C）Create an after update trigger on the Opportunity object that calls a helper method using @Future (Callour=true) to perform the HTTP REST callout.

（D）Create a Lightning component quick action that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.

正解：A、D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 8

Universal Containers wants a list button to display a Visualforce page that allows users to edit multiple records.
Which Visualforce feature supports this requirement?

（A）Standard Controller with Custom List Controller extension

（B）Controller Extension and <apex:listButton> tag

（C）Standard controller and the recordsetzvar page attribute

（D）Custom List Controller with recordSetvar page attribute

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 9

A developer must write an Apex method that will be called from a Lightning component. The method may delete an Account stored in the accountRec variable.
Which method should a developer use to ensure only users that should be able to delete Accounts can successfully perform deletions?

（A）accountRec.a0biectType.iaDeletable()

（B）Schema.sObjectType.Account,isDeletetable() Account,isDelecable ()

（C）Account,iaDelecable ()

（D）accountRec.islCelezable()

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

A Primaryid__c custom field exists on the candidate_ c custom object. The field is used to store each candidate's id number and is marked as Unique in the schema definition.
As part of a data enrichment process, Universal Containers has a CSV file that contains updated data for all candidates in the system. The file contains each Candidate's primary id as a data point. Universal Containers wants to upload this information into Salesforce, while ensuring all data rows are correctly mapped to a candidate in the system.
Which technique should the developer implement to streamline the data upload?

（A）Update the PrimaryId__ c field definition to mark it as an External Id.

（B）Create a before Insert trigger to correctly map the records.

（C）Create a before save flow to correctly map the records.

（D）Upload the CSV into a custom object related to Candidate__ c.

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

DEX-450 無料問題集「Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience」

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