Salesforce Salesforce Certifications CRT-450 Questions & Answers

• Question 231:

  A lead object has a custom field Prior_Email__c. The following trigger is intended to copy the current Email into the Prior_Email__c field any time the Email field is changed:

  

  Which type of exception will this trigger cause?

  A. A null reference exception

  B. A compile time exception

  C. A DML exception

  D. A limit exception when doing a bulk update

  Correct Answer: C

• Question 232:

  A developer wants to override a button using Visualforce on an object. What is the requirement?

  A. The controller or extension must have a PageReference method.

  B. The standardController attribute must be set to the object.

  C. The action attribute must be set to a controller method.

  D. The object record must be instantiated in a controller or extension.

  Correct Answer: B

• Question 233:

  Why would a developer consider using a custom controller over a controller extension?

  A. To increase the SOQL query governor limits.

  B. To implement all of the logic for a page and bypass default Salesforce functionality

  C. To leverage built-in functionality of a standard controller

  D. To enforce user sharing settings and permissions

  Correct Answer: B

• Question 234:

  A developer is asked to set a picklist field to `Monitor' on any new Leads owned by a subnet of Users. How should the developer implement this request?

  A. Create an after insert Lead trigger.

  B. Create a before insert Lead trigger.

  C. Create a Lead Workflow Rule Field Update.

  D. Create a Lead formula field.

  Correct Answer: C

• Question 235:

  How should a developer avoid hitting the governor limits in test methods?

  A. Use @TestVisible on methods that create records.

  B. Use Test.loadData() to load data from a static resource.

  C. Use @IsTest (SeeAllData=true) to use existing data.

  D. Use Test.startTest() to reset governor limits.

  Correct Answer: D

• Question 236:

  Which three declarative fields are correctly mapped to variable types in Apex? (Choose three.)

  A. Number maps to Decimal.

  B. Number maps to Integer.

  C. TextArea maps to List of type String.

  D. Date/Time maps to Dateline.

  E. Checkbox maps to Boolean.

  Correct Answer: ADE

• Question 237:

  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 238:

  A developer needs to display all of the available fields for an object. In which two ways can the developer retrieve the available fields if the variable myObject represents the name of the object? (Choose two.)

  A. Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.

  B. Use mySObject.myObject.fields.getMap() to return a map of fields.

  C. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.

  D. Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.

  Correct Answer: BC

• Question 239:

  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 240:

  Which three options allow a developer to use custom styling in a Visualforce page? (Choose three.)

  A. tag

  B. Inline CSS

  C. tag

  D. tag

  E. A static resource

  Correct Answer: ABE