Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 141:

  Which of these statements about PDO is NOT true?

  A. PDO has built-in support for Large Objects (LOBs).
  B. Placeholders within PDO prepared statements need to be named.
  C. When something goes wrong, PDO can throw an instance of its own exception class.
  D. PDO does not emulate missing database features.
  B. Placeholders within PDO prepared statements need to be named.

• Question 142:

  Which of the following statements is NOT true?

  A. Class constants are public
  B. Class constants are being inherited
  C. Class constants can omit initialization (default to NULL)
  D. Class constants can be initialized by const
  C. Class constants can omit initialization (default to NULL)

• Question 143:

  What is the output of the following code?

  echo "22" + "0.2", 23 . 1;

  A. 220.2231
  B. 22.2231
  C. 22.2,231
  D. 56.2
  B. 22.2231

• Question 144:

  Please provide the name of the super-global variable where all the information about cookies is available.

  $_COOKIE, $_COOKIE[\], _COOKIE, _COOKIE[\]

• Question 145:

  Given the following code, how can we use both traits A and B in the same class? (select all that apply)

  trait A {

  public function hello() {

  return "hello";

  }

  public function world() {

  return "world";

  }

  }

  trait B {

  public function hello() {

  return "Hello";

  }

  public function person($name) {

  return ":$name";

  }

  }

  A. Rename the A::hello() method to a different name using A::hello as helloA;
  B. Use B::hello() instead of A 's version using B::hello insteadof A
  C. Use B::hello() instead of A 's version using use B::hello
  D. Rename the A::hello() method to a different name using A::hello renameto helloA;
  E. None of the above (both can be used directly)
  B. Use B::hello() instead of A 's version using B::hello insteadof A

• Question 146:

  Given a JSON-encoded string, which code sample correctly indicates how to decode the string to native PHP values?

  A. $json = new Json($jsonValue); $value = $json->decode();
  B. $value = Json::decode($jsonValue);
  C. $value = json_decode($jsonValue);
  D. $value = Json::fromJson($jsonValue);
  C. $value = json_decode($jsonValue);

• Question 147:

  How do you allow the caller to submit a variable number of arguments to a function?

  A. Using a prototype like function test(... $parameters).
  B. Using a prototype like function test() and the function func_get_args() inside the function body.
  C. Using a prototype like function test($parameters[]).
  D. Using a prototype like function test() and the function get_variable_args() inside the function body.
  E. This is not possible in PHP.
  B. Using a prototype like function test() and the function func_get_args() inside the function body.

• Question 148:

  What will the $array array contain at the end of this script?

  function modifyArray (and$array)

  {

  foreach ($array as and$value)

  {

  $value = $value + 1;

  }

  $value = $value + 2;

  }

  $array = array (1, 2, 3);

  modifyArray($array);

  A. 2, 3, 4
  B. 2, 3, 6
  C. 4, 5, 6
  D. 1, 2, 3
  B. 2, 3, 6

• Question 149:

  What is cached by an opcode cache?

  A. Compiled PHP code
  B. Native PHP extensions
  C. Data sent to the client
  D. Data received from the database
  A. Compiled PHP code

• Question 150:

  What is the output of the following code?

  function increment ($val)

  {

  $val = $val + 1;

  }

  $val = 1;

  increment ($val);

  echo $val;

  1