[Nov-2021] Free DEX-450 Exam Dumps to Improve Exam Score
2021 Realistic DEX-450 Dumps Exam Tips Test Pdf Exam Material
NEW QUESTION 226
A method is passed a list of generic sObjects as a parameter.
What should the developer do to determine which object type (Account, Lead, or Contact, for example) to cast each sObject?
- A. Use a try-catch construct to cast the sObject into one of the three sObject types.
- B. Use the getSObjectName method on the sObject class to get the sObject name.
- C. Use the getSObjectType method on each generic sObject to retrieve the sObject token.
- D. Use the first three characters of the sObject ID to determine the sObject type.
Answer: C
NEW QUESTION 227
How can a developer avoid exceeding governor limits when using an Apex Trigger?choose 2 answers
- A. By performing DML transactions on lists of SObjects.
- B. By using the Database class to handle DML transactions.
- C. By using Maps to hold data from query results.
- D. By using a helper class that can be invoked from multiple triggers.
Answer: A,C
NEW QUESTION 228
A developer wants to retrieve the Contacts and Users with the email addres '[email protected]'. Which SOSL statement should the developer use?
- A. FIND {[email protected]} IN Email Fields RETURNING Contact (Email), User (Email)
- B. FIND Email IN Contact, User FOR {dev2uc.com}
- C. FIND {Email = '[email protected]'} IN Contact, User
- D. FIND {Email = '[email protected]'} RETURNING Contact (Email), User (Email)
Answer: A
NEW QUESTION 229
A developer wants to display all of the picklist entries for the Opportunity StageName field and all of the available record types for the Opportunity object on a Visualforce page. Which two actions should the developer perform to get the available picklist values and record types in the controller? Choose 2 answers.
- A. Use Schema.PicklistEntry returned by Opportunity.SObjectType.getDescribe().getPicklistValues().
- B. Use Schema.PicklistEntry returned by Opportunity.StageName.getDescribe().getPicklistValues().
- C. Use Schema.RecordTypeInfo returned by Opportunity.SObjectType.getDescribe().getRecordTypeInfos().
- D. Use Schema.RecordTypeInfo returned by RecordType.SObjectType.getDescribe().getRecordTypeInfos().
Answer: A,C
NEW QUESTION 230
In which two trigger types can a developer modify the new sObject records that are obtained by the trigger.new context? Choose 2 answers
- A. After insert
- B. After update
- C. Before update
- D. Before insert
Answer: C,D
NEW QUESTION 231
hat are three techniques that a developer can use to invoke an anonymous block of code? Choose 3 answers
- A. Type code into the developer console and execute it directly
- B. Create a visualforce page that uses a controller class that is declared without sharing
- C. Use the SOAP API to make a call to execute anonymous code
- D. Type code into the execute anonymous tab in the force.com IDE and click execute
- E. Create and execute a test method that does not specify a runas() call
Answer: A,C,D
NEW QUESTION 232
A developer wrote a workflow email alert on case creation so that an email is sent to the case owner manager when a case is created. When will the email be sent?
- A. Before Trigger execution.
- B. Before Committing to database.
- C. After Committing to database.
- D. After Trigger execution.
Answer: C
NEW QUESTION 233
What is a characteristic of the Lightning Component Framework? Choose 2 answers:
- A. It works with existing Visualforce pages.
- B. It has an event-driven architecture.
- C. It uses XML as its data format.
- D. It includes responsive components.
Answer: B,D
NEW QUESTION 234
Which three methods help ensure quality data?
- A. Handling an exception in Apex
- B. Adding an error to a field in before trigger
- C. Create a lookup filter
- D. Sending an email alert using a workflow rule
- E. Adding a validation rule
Answer: C,D,E
NEW QUESTION 235
A developer executes the following code in the Developer Console:
List<Account> fList = new List <Account> ();For(integer i= 1; I <= 200; i++){fList.add(new Account ( Name = 'Universal Account ' + i));}Insert fList;List <Account> sList = new List<Account>();For (integer I = 201; I <=
20000; i ++){sList.add(new Account (Name = 'Universal Account ' + i));}Insert sList;How many accounts are created in the Salesforce organization ?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 236
A developer uses a test setup method to create an account named 'test'. The first method deletes the account record. What must be done in the second test method to use the account?
- A. Use select id from account where name='test'
- B. Restore the account using an undelete statement
- C. Call the test setup method at the start of the test
- D. The account cannot be used in the second method
Answer: A
NEW QUESTION 237
How can a developer warn users of SOQL governor limit violations in a trigger?
- A. Use ApexMessage.Message() to display an error message after the number of SOQL queries exceeds the limit.
- B. Use Limits.getQueries() and display an error message before the number of SOQL queries exceeds the limit.
- C. Use PageReference.setRedirect() to redirect the user to a custom Visualforce page before the number of SOQL queries exceeds the limit.
- D. Use Messaging.SendEmail() to continue the transaction and send an alert to the user after the number of SOQL queries exceeds the limit.
Answer: B
NEW QUESTION 238
Where would a developer build a managed package?
- A. Developer Sandbox
- B. Partial Copy Sandbox
- C. Developer Edition
- D. Unlimited Edition
Answer: C
NEW QUESTION 239
A team of developers is working on a source-driven project that allows them to work independently, with many different org configurations. Which type of Salesforce orgs should they use for their development?
- A. Full Copy sandboxes
- B. Developer orgs
- C. Scratch orgs
- D. Developer sandboxes
Answer: C
NEW QUESTION 240
A company that uses a Custom object to track candidates would like to send candidate information automatically to a third -party human resource system when a candidate is hired. What can a developer do to accomplish this task?
- A. Create an auto response rule to the candidate.
- B. Create an escalation rule to the hiring manager.
- C. Create a workflow rule with an outbound message action.
- D. Create a Process Builder with an outbound message action.
Answer: C
NEW QUESTION 241
A developer created a Visualforce page with a custom controller to show a list of accounts. The page uses the <apex:SelecList> component, with a variable called "selection", to show the valid values for Account.Type. The page uses an <apex:pageBlockTable> component to display the list of accounts, where the iteration variable is "acct". The developer wants to ensure that when a user selects a type on the <apex : selectList> component, only accounts with that type are shown on the page. What should the developer do to accomplish this?
- A. Create a component for each option and use a variable with hide parameter on the element.
- B. Use the onChange event to update the list of accounts in the controller when the value changes, and then re-render the pageBlockTable.
- C. Add the Rendered={!Acct.type==selection} attribute to the pageBlockTable component
- D. Create multiple lists in the controller that represent the relevant accounts for each account type when the page loads, then reference the correct one dynamically on the pageBlockTable.
Answer: B
NEW QUESTION 242
A developer runs the following anonymous code block:List<Account> acc = [SELECT Id FROM Account LIMIT 10];Delete acc;Database.emptyRecycleBin(acc);system.debug(Limits.getDMLStatements()+ ', '
+Limits.getLimitDMLStatements());What is the result?
- A. 11, 150
- B. 2, 150
- C. 150, 2
- D. 150, 11
Answer: B
NEW QUESTION 243
A developer executes the following query in Apex to retrieve a list of contacts for each account:
List<account> accounts = [Select ID, Name, (Select ID, Name from Contacts) from Account] ; Which two exceptions may occur when it executes? (Choose two.)
- A. SOQL query row limit exception due to the number of accounts.
- B. CPU limit exception due to the complexity of the query.
- C. SOQL query limit exception due to the number of contacts.
- D. SOQL query row limit exception due to the number of contacts.
Answer: A,C
NEW QUESTION 244
What is the requirement for a class to be used as a custom Visualforce controller?
- A. Any top-level Apex class that extends a PageReference
- B. Any top-level Apex class that implements the controller interface
- C. Any top-level Apex class that has a constructor that returns a PageReference
- D. Any top-level Apex class that has a default, no-argument constructor
Answer: B
NEW QUESTION 245
What is the accurate statement about with sharing keyword? choose 2 answers
- A. Both inner and outer class can be declared as with sharing
- B. Inner class inherit the sharing setting from the container class
- C. Either inner class or outer classes can be declared as with sharing but not both
- D. Inner class do not inherit the sharing setting from the container class
Answer: A,D
NEW QUESTION 246
Given the code below, what can be done so that recordcount can be accessed by a test class, but not by a non-test class? Public class mycontroller{ private integer recordcount; }
- A. Add the testvisible annotation to recordcount
- B. Add the testvisible annotation to the mycontroller class
- C. Add a seealldata annotation to the test class
- D. Change recordcount from private to public
Answer: A
NEW QUESTION 247
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 getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.
- C. Use mySObject.myObject.fields.getMap() to return a map of fields.
- D. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.
Answer: C,D
NEW QUESTION 248
A company wants a recruiting app that models candidates and interviews; displays the total number of interviews on each candidate record; and defines security on interview records that is independent from the security on candidate records. What would a developer do to accomplish this task? Choose 2 answers
- A. Create a master -detail relationship between the Candidate and Interview objects.
- B. Create a roll -up summary field on the Candidate object that counts Interview records.
- C. Create a trigger on the Interview object that updates a field on the Candidate object.
- D. Create a lookup relationship between the Candidate and Interview objects.
Answer: C,D
NEW QUESTION 249
Given the following block code: try{ List <Accounts> retrievedRecords = [SELECT Id FROM Account WHERE Website = null]; }catch(Exception e){ //manage exception logic } What should a developer do to ensure the code execution is disrupted if the retrievedRecordslist remains empty after the SOQL query?
- A. Check the state of the retrieveRecords variable and throw a custom exception if the variable is empty.
- B. Replace the retrievedRecords variable declaration from a List of Account to a single Account.
- C. Check the state of the retrievedRecords variable and use System.assert(false) if the variable is empty
- D. Check the state of the retrievedRecords variable and access the first element of the list if the variable is empty.
Answer: C
NEW QUESTION 250
Manage package can be created in which type of org?
- A. Partial copy sandbox
- B. Developer Edition
- C. Unlimited edition
- D. Developer sandbox
Answer: B
NEW QUESTION 251
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