Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 21:

  Which of the following filtering techniques prevents all cross-site scripting (XSS) vulnerabilities?

  A. Strip all occurrences of the string
  B. Strip all occurrences of the string javascript .
  C. Enable magic_quotes_gpc .
  D. None of the above.
  D. None of the above.

• Question 22:

  What is the output of the following code? echo 0x33, ' monkeys sit on ', 011, ' trees.';

  A. 33 monkeys sit on 11 trees.
  B. 51 monkeys sit on 9 trees.
  C. monkeys sit on trees.
  D. 0x33 monkeys sit on 011 trees.
  B. 51 monkeys sit on 9 trees.

• Question 23:

  How should you track errors on your production website?

  A. Enabling display_errors
  B. Enabling log_errors
  C. Having a site-wide exception handler
  D. Setting error_reporting to E_ALL and ~E_NOTICE
  B. Enabling log_errors

• Question 24:

  Which of the following tasks can be achieved by using magic methods? (Choose 3)

  A. Initializing or uninitializing object data
  B. Creating a new stream wrapper
  C. Creating an iterable object
  D. Processing access to undefined methods or properties
  E. Overloading operators like +, *, etc.
  F. Converting objects to string representation
  A. Initializing or uninitializing object data
  D. Processing access to undefined methods or properties
  F. Converting objects to string representation

• Question 25:

  Which of the following functions will allow identifying unique values inside an array?

  A. array_unique_values
  B. array_distinct
  C. array_count_values
  D. array_intersect
  E. array_values
  C. array_count_values

• Question 26:

  Given a php.ini setting of

  default_charset = utf-8

  what will the following code print in the browser?

  header('Content-Type: text/html; charset=iso-8859-1');

  echo 'and#9986;and#10004;and#10013;';

  A. Three Unicode characters, or unreadable text, depending on the browser
  B. and#9986;and#10004;and#10013;
  C. A blank line due to charset mismatch
  A. Three Unicode characters, or unreadable text, depending on the browser

• Question 27:

  Late static binding is used in PHP to:

  A. Load dynamic libraries and extensions at runtime
  B. Use caller class information provided in static method call
  C. Resolve undefined class names by automatically including needed files
  D. Find proper method to call according to the call arguments
  B. Use caller class information provided in static method call

• Question 28:

  What is the difference between "print" and "echo"?

  A. There is no difference.
  B. Print has a return value, echo does not
  C. Echo has a return value, print does not
  D. Print buffers the output, while echo does not
  E. None of the above
  B. Print has a return value, echo does not

• Question 29:

  What is the output of the following code? var_dump(boolval(-1));

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

• Question 30:

  Which of the following is NOT true about PHP traits? (Choose 2)

  A. Multiple traits can be used by a single class.
  B. A trait can implement an interface.
  C. A trait can declare a private variable.
  D. Traits are able to be auto-loaded.
  E. Traits automatically resolve conflicts based on definition order.
  B. A trait can implement an interface.
  E. Traits automatically resolve conflicts based on definition order.