Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 171:

  Which of these elements can be encapsulated by namespaces and made accessible from the outside?

  A. Only classes
  B. Classes, functions and constants
  C. Classes, functions, constants and variables
  B. Classes, functions and constants

• Question 172:

  Which of the following is NOT possible using reflection?

  A. Analysing of nearly any aspect of classes and interfaces
  B. Analysing of nearly any aspect of functions
  C. Adding class methods
  D. Implement dynamic construction (new with variable class name)
  C. Adding class methods

• Question 173:

  What is the output of the following code?

  var_dump(boolval(new StdClass()));

  A. bool(true)
  B. bool(false)
  A. bool(true)

• Question 174:

  Consider the following code. Which keyword should be used in the line marked with "KEYWORD" instead of "self" to make this code work as intended?

  abstract class Base {

  protected function __construct() {

  }

  public static function create() {

  return new self(); // KEYWORD

  }

  abstract function action();

  }

  class Item extends Base {

  public function action() { echo __CLASS__; }

  }

  $item = Item::create();

  $item->action(); // outputs "Item"

  static

• Question 175:

  Transactions are used to...

  A. guarantee high performance
  B. secure data consistency
  C. secure access to the database
  D. reduce the database server overhead
  E. reduce code size in PHP
  B. secure data consistency

• Question 176:

  The XML document below has been parsed into $xml via SimpleXML. How can the value of tag accessed?

  Value

  A. $xml->bar['foo']
  B. $xml->bar->foo
  C. $xml['document']['bar']['foo']
  D. $xml->document->bar->foo
  E. $xml->getElementByName('foo');
  B. $xml->bar->foo

• Question 177:

  What will be the result of the following operation? array_combine(array("A","B","C"), array(1,2,3));

  A. array("A","B","C",1,2,3)
  B. array(1,2,3,"A","B",C")
  C. array("A"=>1,"B"=>2,"C"=>3)
  D. array(1=>"A",2=>"B",3=>"C")
  E. array(1,2,3)
  C. array("A"=>1,"B"=>2,"C"=>3)

• Question 178:

  Under what condition may HTTP headers be set from PHP if there is content echoed prior to the header function being used?

  A. headers_sent() returns true
  B. Output buffering is enabled
  C. The client supports local buffering
  D. The webserver uses preemptive mode
  B. Output buffering is enabled

• Question 179:

  How can the id attribute of the 2nd baz element from the XML string below be retrieved from the SimpleXML object

  found inside $xml?

  One

  Two

  A. $xml->getElementById('2');
  B. $xml->foo->bar->baz[2]['id']
  C. $xml->foo->baz[2]['id']
  D. $xml->foo->bar->baz[1]['id']
  E. $xml->bar->baz[1]['id']
  E. $xml->bar->baz[1]['id']

• Question 180:

  What is the output of the following code?

  class test {

  public $value = 0;

  function test() {

  $this->value = 1;

  }

  function __construct() {

  $this->value = 2;

  }

  }

  $object = new test();

  echo $object->value;

  A. 2
  B. 1
  D. 3
  E. No Output, PHP will generate an error message.
  A. 2