Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 91:

  Given the default PHP configuration, how can all of the parameters provided via GET be accessed in a form of a string?

  A. $_GET['ALL']
  B. $_SERVER['QUERY']
  C. $_SERVER['QUERY_STRING']
  D. $_ENV['QUERY']
  E. $QUERY_STRING
  C. $_SERVER['QUERY_STRING']

• Question 92:

  What is the output of the following code?

  function append($str)

  {

  $str = $str.'append';

  }

  function prepend(and$str)

  {

  $str = 'prepend'.$str;

  }

  $string = 'zce';

  append(prepend($string));

  echo $string;

  A. zceappend
  B. prependzceappend
  C. prependzce
  D. zce
  C. prependzce

• Question 93:

  When would you use classes and when would you use namespaces?

  A. Use classes to encapsulate code and represent objects, and namespaces to avoid symbol name collisions
  B. Use classes for performance-sensitive code, and namespaces when readability matters more
  C. Use namespaces for performance-sensitive code, and classes when readability matters more
  D. Always use them; namespaces are always superior to classes
  A. Use classes to encapsulate code and represent objects, and namespaces to avoid symbol name collisions

• Question 94:

  What purpose do namespaces fulfill?

  A. Encapsulation
  B. Alternative to classes
  C. Improved performance
  D. All of the above
  A. Encapsulation

• Question 95:

  Which constant must be passed as the second argument to htmlentities() to convert single quotes (') to HTML entities?

  A. TRUE
  B. FALSE
  C. ENT_QUOTES
  D. ENT_NOQUOTES
  E. ENT_COMPAT
  C. ENT_QUOTES

• Question 96:

  Type hinting in PHP allows the identification of the following variable types: (Choose 2)

  A. String
  B. Integer
  C. Array
  D. Any class or interface type
  E. All of the above
  C. Array
  D. Any class or interface type

• Question 97:

  Which of the following is an invalid DOM save method?

  A. save()
  B. saveFile()
  C. saveXML()
  D. saveHTML()
  E. saveHTMLFile()
  B. saveFile()

• Question 98:

  Given the following code, what will the output be:

  trait MyTrait {

  private $abc = 1;

  public function increment() {

  $this->abc++;

  }

  public function getValue() {

  return $this->abc;

  }

  }

  class MyClass {

  use MyTrait;

  public function incrementBy2() {

  $this->increment();

  $this->abc++;

  }

  }

  $c = new MyClass;

  $c->incrementBy2();

  var_dump($c->getValue());

  A. Fatal error: Access to private variable MyTrait::$abc from context MyClass
  B. Notice: Undefined property MyClass::$abc
  C. int(2)
  D. int(3)
  E. NULL
  D. int(3)

• Question 99:

  Which DOMElement property provides a reference to the list of the element's children?

  childNodes

• Question 100:

  When a class is defined as final it:

  A. Can no longer be extended by other classes.
  B. Means methods in the class are not over-loadable.
  C. Cannot be defined as such, final is only applicable to object methods.
  D. Cannot be instantiated.
  A. Can no longer be extended by other classes.