Zend Zend Certifications 200-550 Questions & Answers

• Question 201:

  What would be the output of the following code?

  namespace MyFramework\DB;

  class MyClass {

  static function myName() {

  return __METHOD__;

  }

  }

  print MyClass::myName();

  A. MyFramework\DB\myName

  B. MyFramework\DB\MyClass\myName

  C. MyFramework\DB\MyClass::myName

  D. MyClass::myName

  Correct Answer: C

• Question 202:

  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

  Correct Answer: B

• Question 203:

  You'd like to use the class MyDBConnection that's defined in the MyGreatFramework \MyGreatDatabaseAbstractionLayer namespace, but you want to minimize *as much as possible* the length of the class name you have to type. What would you do?

  A. Import the MyGreatFramework namespace

  B. Import the MyGreatFramework\MyGreatDatabaseAbstractionLayer namespace

  C. Alias MyGreatFramework\MyGreatDatabaseAbstractionLayer\MyDBConnection to a shorter name

  D. Alias MyGreatFramework\MyGreatDatabaseAbstractionLayer to a shorter name

  Correct Answer: C

• Question 204:

  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

  Correct Answer: A

• Question 205:

  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.

  Correct Answer: AB

• Question 206:

  What purpose do namespaces fulfill?

  A. Encapsulation

  B. Alternative to classes

  C. Improved performance

  D. All of the above

  Correct Answer: A

• Question 207:

  What function allows resizing of PHP's file write buffer?

  A. ob_start()

  B. set_write_buffer()

  C. stream_set_write_buffer()

  D. Change the output_buffering INI setting via ini_set() function

  Correct Answer: C

• Question 208:

  What does the __FILE__ constant contain?

  A. The filename of the current script.

  B. The full path to the current script.

  C. The URL of the request made.

  D. The path to the main script.

  Correct Answer: B

• Question 209:

  Which of the following will set a 10 seconds read timeout for a stream?

  A. ini_set("default_socket_timeout", 10);

  B. stream_read_timeout($stream, 10);

  C. Specify the timeout as the 5th parameter to the fsockopen() function used to open a stream

  D. stream_set_timeout($stream, 10);

  E. None of the above

  Correct Answer: D

• Question 210:

  What is the recommended method of copying data between two opened files?

  A. copy($source_file, $destination_file);

  B. copy($destination_file, $source_file);

  C. stream_copy_to_stream($source_file, $destination_file);

  D. stream_copy_to_stream($destination_file, $source_file);

  E. stream_bucket_prepend($source_file, $destination_file);

  Correct Answer: C