Zend-Technologies 200-550 問題集

質問 1：
Which of the following rules must every correct XML document adhere to? (Choose 2)
A. It has to be valid.
B. It may only contain UTF-8 encoded characters.
C. It has to be well-formed.
D. It has to be associated to a DTD.
正解：A,C

質問 2：
How can the id attribute of the 2nd baz element from the XML string below be retrieved from the SimpleXML object found inside $xml? <?xml version='1.0'?> <foo> <bar> <baz id="1">One</baz> <baz id="2">Two</baz> </bar> </foo>
A. $xml->foo->bar->baz[2]['id']
B. $xml->foo->baz[2]['id']
C. $xml->foo->bar->baz[1]['id']
D. $xml->bar->baz[1]['id']
E. $xml->getElementById('2');
正解：D

質問 3：
Which of the following statements about Reflection is correct?
A. Reflection only allows to reflect on built-in classes
B. Built-in classes can be reflected on command line using php --rc <classname>
C. Reflection is an extension that can be disabled
D. Reflection is a new extension present only in PHP 5.3+
正解：B

質問 4：
Which of the following is NOT possible using reflection?
A. Adding class methods
B. Analysing of nearly any aspect of classes and interfaces
C. Analysing of nearly any aspect of functions
D. Implement dynamic construction (new with variable class name)
正解：A

質問 5：
What is the preferred method for preventing SQL injection?
A. Using htmlspecialchars() and the available database-specific escaping functionality to escape variables to be used in a query.
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. Always using prepared statements for all SQL queries.
正解：D

質問 6：
What SimpleXML function is used to parse a file?
A. loadFile()
B. loadXML()
C. simplexml_load_string()
D. load()
E. simplexml_load_file()
F. None of the above.
正解：E

質問 7：
Which of the following code snippets DO NOT write the exact content of the file "source.txt" to "target.txt"? (Choose 2)
A. file_put_contents("target.txt", file_get_contents("source.txt"));
B. file_put_contents("target.txt", readfile("source.txt"));
C. file_put_contents("target.txt", join(file("source.txt"), "\n"));
D. file_put_contents("target.txt", fopen("source.txt", "r"));
E. $handle = fopen("target.txt", "w+"); fwrite($handle, file_get_contents("source.txt")); fclose($handle);
正解：B,C