Zend Certified Engineer - 200-710 Exam Practice Test

Question 1

Which of these statements about PDO is NOT true?

A. PDO does not emulate missing database features.

B. When something goes wrong, PDO can throw an instance of its own exception class.

C. Placeholders within PDO prepared statements need to be named.

D. PDO has built-in support for Large Objects (LOBs).

Correct Answer: C

Question 2

Which of the following functions will allow identifying unique values inside an array?

A. array_intersect

B. array_unique_values

C. array_distinct

D. array_values

E. array_count_values

Correct Answer: E

Question 3

What is the output of the following code?
$ first= "second";
$ second = "first";
echo $$$first;

A. an empty string

B. "second"

C. "first"

D. an error

Correct Answer: B

Question 4

Which of the following statements about anonymous functions in PHP are NOT true? (Choose 2)

A. Assigning closure to a property of an object binds it to that object

B. Binding defines the value of $this and the scope for a closure

C. Anonymous functions can be bound to objects

D. Anonymous functions created within object context are always bound to that object

E. Methods bind() and bindTo() of the Closure object provide means to create closures with different
binding and scope

Correct Answer: A,D

Question 5

In the following code, which classes can be instantiated?
abstract class Graphics {
abstract function draw($im, $col);
}
abstract class Point1 extends Graphics {
public $x, $y;
}
function _construct($x, $y) {
$ this->x = $x;
$ this->y = $y;
}
function draw($im, $col) {
lmageSetPixel($im, $this->x, $this->y, $col);
}
class Point2 extends Point1 {}
abstract class Point3 extends Point2 {}

A. Point3

B. Point2

C. Point1

D. None, the code is invalid

E. Graphics

Correct Answer: B

Question 6

Which line of code can be used to replace the INSERT comment in order to output "hello"?
class C {
public $ello == 'ello';
public $c;
public $m;
function _construct($y) {
$ this->c == static function($f) {
// INSERT LINE OF CODE HERE
};
$ this->m == function() {
return "h";
};
$ x == new C("h");
$ f == $x->c;
echo $f($x->m);

A. return 11h11 * $this->ello;

B. return $this->m() . "ello";

C. return $f() . "ello";

D. return $y. "ello";

Correct Answer: C

Question 7

Assuming UTF-8 encoding, what is the value of $count?

A. 0

B. 5

C. 7

D. 4

Correct Answer: B

Question 8

What types of HTTP authentication are supported by PHP? (Choose 2)

A. Advanced

B. Digest

C. Strict

D. Realm

E. Basic

Correct Answer: B,E

Question 9

Which of these databases is NOT supported by a PDO driver?

A. Berkeley DB

B. SQLite

C. Microsoft Access

D. Microsoft SQL Server

Correct Answer: A

Question 10

What is the output of the following code?

A. Test

B. empty string

C. MyNamespace\Test

D. parse error

Correct Answer: B

Question 11

Which one of the following XML declarations is NOT valid?

A. <?xml version="1.1" encoding="UTF-811 ?>

B. <?xml standalone="1" ?>

C. <?xml standalone="no" ?>

D. <?xml version="1.0" ?>

Correct Answer: B

Question 12

Given a PHP value, which sample shows how to convert the value to JSON?

A. $string= json_encode($value);

B. $string= Json::encode($value);

C. $value= (object) $value; $string= $value-> toJson();

D. $json = new Json($value); $string= $json-> toString();

Correct Answer: A

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