Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 121:

  What information can be used to reliably determine the type of an uploaded file?

  A. MIME type
  B. File name extension
  C. Contents of the file
  C. Contents of the file

• Question 122:

  What is the output of the following code?

  $a = array('a', 'b'=>'c');

  echo property_exists((object) $a, 'a')?'true':'false'; echo '-'; echo property_exists((object) $a, 'b')?'true':'false';

  A. false-false
  B. false-true
  C. true-false
  D. true-true
  B. false-true

• Question 123:

  What can prevent PHP from being able to open a file on the hard drive (Choose 2)?

  A. File system permissions
  B. File is outside of open_basedir
  C. File is inside the /tmp directory.
  D. PHP is running in CGI mode.
  A. File system permissions
  B. File is outside of open_basedir

• Question 124:

  You want to access the 3rd character of a string, contained in the variable $test. Which of the following possibilites work? (Choose 2)

  A. echo $test(3);
  B. echo $test[2];
  C. echo $test(2);
  D. echo $test{2};
  E. echo $test{3};
  B. echo $test[2];
  D. echo $test{2};

• Question 125:

  What is the output of the following code?

  $first = "second"; $second = "first"; echo $$$first;

  A. "first"
  B. "second"
  C. an empty string
  D. an error
  B. "second"

• Question 126:

  One common security risk is exposing error messages directly in the browser. Which PHP configuration directive can be disabled to prevent this?

  A. html_display
  B. error_reporting
  C. display_errors
  D. error_log
  E. ignore_repeated_errors
  C. display_errors

• Question 127:

  PHP's array functions such as array_values() can be used on an object if the object...

  A. implements Traversable
  B. is an instance of ArrayObject
  C. implements ArrayAccess
  D. None of the above
  D. None of the above

• Question 128:

  Consider the following code. What can be said about the call to file_get_contents?

  $getdata = "foo=bar";

  $opts = array('http' =>

  array(

  'method' => 'POST',

  'header' => 'Content-type: application/x-www-form-urlencoded', 'content' => $getdata )

  );

  $context = stream_context_create($opts);

  $result = file_get_contents('http://example.com/submit.php', false, $context);

  A. A GET request will be performed on http://example.com/submit.php
  B. A POST request will be performed on http://example.com/submit.php
  C. An error will be displayed
  B. A POST request will be performed on http://example.com/submit.php

• Question 129:

  What is the preferred method for preventing SQL injection?

  A. Always using prepared statements for all SQL queries.
  B. Always using the available database-specific escaping functionality on all variables prior to building the SQL query.
  C. Using addslashes() to escape variables to be used in a query.
  D. Using htmlspecialchars() and the available database-specific escaping functionality to escape variables to be used in a query.
  A. Always using prepared statements for all SQL queries.

• Question 130:

  How many elements does the array $matches from the following code contain? $str = "The cat sat on the roof of their house.";

  $matches = preg_split("/(the)/i", $str, -1, PREG_SPLIT_DELIM_CAPTURE);

  A. 2
  B. 3
  C. 4
  D. 7
  E. 9
  D. 7