Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 421:

  When viewing a Quote, the sales representative wants to easily see how many discounted items are included in the Quote Line Items.

  What should a developer do to meet this requirement?

  A. Create a trigger on the Quote object that queries the Quantity field on discounted Quote Line Items.

  B. Create a Workflow Rule on the Quote Line Item object that updates a field on the parent Quote when the item is discounted.

  C. Create a roll-up summary field on the Quote object that performs a SUM on the quote Line Item Quantity field, filtered for only discounted Quote Line Items.

  D. Create a formula field on the Quote object that performs a SUM on the Quote Line Item Quantity field, filtered for only discounted Quote Line Items.

  Correct Answer: C

• Question 422:

  The operation manager at a construction company uses a custom object called Machinery to manage the usage and maintenance of its cranes and other machinery. The manager wants to be able to assign machinery to different constructions jobs, and track the dates and costs associated with each job. More than one piece of machinery can be assigned to one construction job.

  What should a developer do to meet these requirements?

  A. Create a lookup field on the Construction Job object to the Machinery object.

  B. Create a lookup field on the Machinery object to the Construction Job object.

  C. Create a junction object with Master-Detail Relationship to both the Machinery object and the Construction Job object.

  D. Create a Master-Detail Lookup on the Machinery object to the Construction Job object.

  Correct Answer: A

• Question 423:

  Which three tools can deploy metadata to production? (Choose three.)

  A. Change Set from Developer Org

  B. Force.com IDE

  C. Data Loader

  D. Change Set from Sandbox

  E. Metadata API

  Correct Answer: ADE

• Question 424:

  What is the requirement for a class to be used as a custom Visualforce controller?

  A. Any top-level Apex class that has a constructor that returns a PageReference

  B. Any top-level Apex class that extends a PageReference

  C. Any top-level Apex class that has a default, no-argument constructor

  D. Any top-level Apex class that implements the controller interface

  Correct Answer: D

• Question 425:

  Using the Schema Builder, a developer tries to change the API name of a field that is referenced in an Apex test class.

  What is the end result?

  A. The API name is not changed and there are no other impacts.

  B. The API name of the field and the reference in the test class is changed.

  C. The API name of the field is changed, and a warning is issued to update the class.

  D. The API name of the field and the reference in the test class is updated.

  Correct Answer: C

• Question 426:

  Which tool allows a developer to send requests to the Salesforce REST APIs and view the responses?

  A. REST resource path URL

  B. Workbench REST Explorer

  C. Developer Console REST tab

  D. Force.com IDE REST Explorer tab

  Correct Answer: B

• Question 427:

  When is an Apex Trigger required instead of a Process Builder Process?

  A. When a record needs to be created

  B. When multiple records related to the triggering record need to be updated

  C. When a post to Chatter needs to be created

  D. When an action needs to be taken on a delete or undelete, or before a DML operation is executed.

  Correct Answer: D

• Question 428:

  What is a benefit of using an after insert trigger over using a before insert trigger?

  A. An after insert trigger allows a developer to bypass validation rules when updating fields on the new record.

  B. An after insert trigger allows a developer to insert other objects that reference the new record.

  C. An after insert trigger allows a developer to make a callout to an external service.

  D. An after insert trigger allows a developer to modify fields in the new record without a query.

  Correct Answer: B

• Question 429:

  A developer executes the following query in Apex to retrieve a list of contacts for each account: List accounts = [Select ID, Name, (Select ID, Name from Contacts) from Account] ; Which two exceptions may occur when it executes? (Choose two.)

  A. CPU limit exception due to the complexity of the query.

  B. SOQL query row limit exception due to the number of contacts.

  C. SOQL query limit exception due to the number of contacts.

  D. SOQL query row limit exception due to the number of accounts.

  Correct Answer: CD

• Question 430:

  What are two valid options for iterating through each Account in the collection List named AccountList? (Choose two.)

  A. for (Account theAccount : AccountList) {...}

  B. for(AccountList) {...}

  C. for (List L : AccountList) {...}

  D. for (Integer i=0; i < AccountList.Size(); i++) {...}

  Correct Answer: AD