What is the potential exception that can be thrown from this SOQL query: Account a = [SELECT Id, (SELECT Id FROM Contacts) FROM Account] Choose 2 answers

• A.QueryException if more than one record is returned.
• B.NullPointerException if no records are returned.
• C.TypeException if a Contact is returned as part of the query.
• D.QueryException if no records are returned.

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The SOAP API_________.

• A.Provides a powerful, convenient, and simple REST-based web services interface for interacting with Salesforce. Its advantages include ease of integration and development, and it's an excellent choice of technology for use with mobile applications and web projects
• B.Is used to retrieve, deploy, create, update, or delete customizations for your org. The most common use is to migrate changes from a sandbox or testing org to your production environment
• C.Is based on REST principles and is optimized for loading or deleting large sets of data. You can use it to query, queryAII, insert, update, upsert, or delete many records asynchronously by submitting batches
• D.Is used to create, retrieve, update or delete records, such as accounts, leads, and custom objects, and allows you to allows you to maintain passwords, perform searches, and much more

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What is a valid request for the following REST method? (Choose two.)
@HttpPost global static void myPostMethod(String si, Integer il, Boolean bl, String 52)

• A.<request> <sl>"my first string"</sl> <il>123</il> <sZ>!,my second string"</32> <bl>false</bl>
  </request>
• B.il" : 123, "SI" : "my first string", "S2" : "my second string", "bl" : false
• C.si" : "my first string", 11" : "123", "bl" : "false", "S2" : "my second string"
• D.<request> <sl>my first string</sl> <ll>123</il> <32>my second string</32> <bl>false</bl> </request>

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This sales team needs a custom Visualforce page to enter sales orders. When a product is selected on the Visualforce page, a web service is invoked to determine if the product is in stock, and the result is displayed on the page.
How can a developer write this page to display the result of the web service and ensure governor limits for concurrent usage are not exceeded?

• A.Use the Salesforce Metadata API in the web service callout.
• B.Use an Apex trigger with callout=true annotation.
• C.Use Continuation that is invoked when a Submit button is clicked.
• D.Use visualforce Remoting to handle the web service callout.

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A developer has created a Visualforce page for inputting data and needs to display errors at the field level.
What tag should the developer use?

• A.< apex:messages>
• B.< apex:pageMessage>
• C.< apex:message>
• D.< apex:pageMessages>

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