Free DEX-450 Exam Braindumps
Programmatic Development using Apex and Visualforce in Lightning Experience Questions 206–210 (page: 43)

Updated On: 10-Feb-2026

In which two org types can a developer create new Apex Classes? Choose 2 answers

  1. Developer Edition
  2. Sandbox
  3. Enterprise Edition
  4. Unlimited

Answer(s): A,B



Which two are true regarding a Dyno? Choose 2 answers

  1. Is a light weight VM used to run code on the Heroku Platform
  2. Has the ability to sleep as a standard and performance Dyno
  3. Is a lightweight Linux container used in a collection to run Heroku applications
  4. Has Ephemeral filesystems and is rebooted every 24 hours.

Answer(s): C,D



A user selects a value from a multi-select picklist. How is this selected value represented in Apex?

  1. As a string ending with a comma
  2. As a string
  3. As a list< String > with one element
  4. As a set< string > with one element

Answer(s): B



Which two queries can a developer use in a visualforce controller to protect against SOQL injection Vulnerabilities? Choose 2 answers

  1. String qryName = '%' + String.enforceSecurityChecks(name)+ '%'; String qryString = 'SELECT Id FROM Contact WHERE Name LIKE :qryNAme'; List queryResults = Database.query(qryString);
  2. String qryName = '%' + name '%'; String qryString = 'SELECT Id FROM Contact WHERE Name LIKE :qryNAme'; List queryResults = Database.query(qryString);
  3. String qryName = '%' + String.escpaeSingleQuotes(name)+ '%'; String qryString = 'SELECT Id FROM Contact WHERE Name LIKE :qryNAme'; List queryResults = Database.query(qryString);
  4. String qryString = 'SELECT Id FROM Contact WHERE Name LIKE :qryNAme'; List queryResults = Database.query(qryString);

Answer(s): A,D



What is the return data type when ApexPages.currentPage().getParameters() is used to retrieve URL parameters from a visualforce controller?

  1. Map
  2. List
  3. Enum
  4. String[]

Answer(s): A



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