Salesforce Salesforce Certifications CRT-450 Questions & Answers

• Question 161:

  What are the methods used to show input in classic and lightning?

  A. Use visualforce page in classic and lightning component in lightning

  B. PlaceHolder

  C. PlaceHolder

  Correct Answer: A

• Question 162:

  How many accounts will be inserted by the following block ofcode?

  for(Integer i = 0 ; i < 500; i++) { Account a = new Account(Name='New Account ' + i); insert a; }87. Boolean odk;

  Integer x;

  if(abok=false;integer=x;){

  X=1;

  }elseif(abok=true;integer=x;){

  X=2;

  }elseif(abok!=null;integer=x;){

  X=3;

  )elseif{

  X=4;}

  A. X=4

  B. X=8

  C. X=9

  D. X=10

  Correct Answer: A

• Question 163:

  what are the three languages used in the visualforce page?

  A. Javascript, CSS, HTML

  B. Apex, Json, SQL

  C. C++, CSS, query

  Correct Answer: A

• Question 164:

  A developer identifies the following triggers on the Expense_c object:

  1.

  DeleteExpense,

  2.

  applyDefaultstoexpense

  3.

  validateexpenseupdate;

  The triggers process before delete, before insert, and before update events respectively. Which two techniques should the developer implement to ensure trigger best practice are followed?

  A. Unify the before insert and before update triggers and use Process Builder for the delete action.

  B. Maintain all three triggers on the Expense__c object, but move the Apex logic out for the trigger definition.

  C. Create helper classes to execute the appropriate logic when a record is saved.

  D. Unify all three triggers in a single trigger on the Expense__c object that includes all events.

  Correct Answer: CD

• Question 165:

  A developer has a VF page and custom controller to save Account records. The developer wants to display any validation rule violation to the user. How can the developer make sure that validation rule violations are displayed?

  A. Add custom controller attributes to display the message.

  B. Include on the Visualforce page.

  C. Use a try/catch with a custom exception class.

  D. Perform the DML using the Database.upsert() method

  Correct Answer: B

  https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_compref_message.htm

• Question 166:

  Given the following Apex statement:

  Account myAccount = [SELECT Id, Name FROM Account];

  What occurs when more than one Account is returned by the SOQL query?

  A. The variable, myAccount, is automatically cast to the List data type.

  B. The first Account returned is assigned to myAccount.

  C. The query fails and an error is written to the debug log.

  D. An unhandled exception is thrown and the code terminates.

  Correct Answer: D

• Question 167:

  What will be the output in the debug log in the event of a QueryExeption during a call to the @query method in the following Example?

  A. Querying Accounts. Query Exception.

  B. Querying Accounts. Custom Exception.

  C. Querying Accounts. Query Exception. Done

  D. Querying Accounts. Custom Exception Done.

  Correct Answer: C

• Question 168:

  Which salesforce org has a complete duplicate copy of the production org including data and configuration?

  A. Developer Pro Sandbox

  B. Partial Copy Sandbox

  C. Production

  D. Full Sandbox

  Correct Answer: D

• Question 169:

  Which three statements are true regarding custom exceptions in Apex? (Choose three.)

  A. A custom exception class must extend the system Exception class.

  B. A custom exception class can implement one or many interfaces.

  C. A custom exception class cannot contain member variables or methods.

  D. A custom exception class name must end with "Exception".

  E. A custom exception class can extend other classes besides the Exception class.

  Correct Answer: BDE

• Question 170:

  An Apex method, getAccounts, that returns a List of Accounts given a search Term, is available for Lighting Web components to use. What is the correct definition of a Lighting Web component property that uses the getAccounts method?

  A. @AuraEnabled(getAccounts, `$searchTerm') accountList;

  B. @wire(getAccounts, `$searchTerm') accountList;

  C. @AuraEnabled(getAccounts, {searchTerm: `$searchTerm'}) accountList;

  D. @wire(getAccounts, {searchTerm: `$searchTerm'}) accountList;

  Correct Answer: D

  https://developer.salesforce.com/docs/component-library/documentation/en/48.0/lwc/lwc.data_wire_service_about