Zend-Technologies 200-710 問題集

質問 1：
When using password_hash() with the PASSWORD_DEFAULT algorithm constant, which of the following
is true? (Choose 2)
A. The hash algorithm that's used will always be compatible with crypt().
B. The string length of the returned hash can change over time.
C. The salt option should always be set to a longer value to account for future algorithm requirements.
D. The algorithm that is used for hashing passwords can change when PHP is upgraded.
正解：B,D

質問 2：
Which of the following will set a 10 seconds read timeout for a stream?
A. ini_set("default_socket_timeout", 10);
B. Specify the timeout as the 5th parameter to the fsockopen() function used to open a stream
C. stream_read_timeout($stream, 10);
D. stream_set_timeout($stream, 10);
E. None of the above
正解：D

質問 3：
What is the output of the following code?
function ratio ($xl = 10, $x2)
{
}
if (isset ($x2)) {
return $x2 / $xl;
echo ratio (0);
A. A warning, because $x2 is not set
B. 0
C. A warning, because $xl is not set
D. Nothing
E. An integer overflow error
F. A floating-point overflow error
正解：A

質問 4：
What is the output of the following code?
function increment ($val)
{
$ _GET['m'] = (int) $_GET['m'] + 1;
$ _GET['m'] = 1;
echo $_GET['m'];
正解：
1

質問 5：
What is the output of this code?
$ world = 'world';
echo <<<'TEXT'
hello $world
TEXT;
A. PHP Parser error
B. hello $world
C. hello world
正解：A

質問 6：
Which of the following can be registered as entry points with a SoapServer instance (choose 2):
A. A single method from a class
B. All classes defined in a script
C. A single function
D. All methods from a class
正解：C,D

質問 7：
How many elements does the $matches array contain after the following function call is performed?
preg_match('/"(\d{l,2}([a-z]+))(?:\s*)\S+ (?=201(0-9])/', '21st March 2014', $matches);
A. 2
B. 3
C. 4
D. 1
正解：B

質問 8：
Your supervisor wants you to disallow PHP scripts to open remote HTTP and FTP resources using PHP's
file functions. Which php.ini setting should you change accordingly?
正解：
allow_url_fopen=off, allow_url_fopen=Off,