Zend Exam 200-710 Topic 2 Question 64 Discussion

Actual exam question for Zend's 200-710 exam

Question #: 64
Topic #: 2

[All 200-710 Questions]

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) {

ImageSetPixel($im, $this->x, $this->y, $col);

}

class Point2 extends Point1 { }

abstract class Point3 extends Point2 { }

AGraphics

BPoint1

CPoint2

DPoint3

ENone, the code is invalid

Show Suggested Answer

Suggested Answer: A

by Flo at May 01, 2024, 04:49 AM

Limited Time Offer

25%

Off

Get Premium 200-710 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Nakisha

Haha, this question is like a game of 'Guess the Abstraction'. I'm going with D) Point3, just to keep the guessing going!

upvoted 0 times

...

Queen

11 days ago

Wait, I thought abstract classes couldn't be instantiated? E) None, the code is invalid seems like the right choice to me.

upvoted 0 times

...

Ty

12 days ago

I think the answer is C) Point2. The Point2 class extends the non-abstract Point1 class, so it should be able to be instantiated.

upvoted 0 times

...

Rosina

17 days ago

I disagree, I think Point2 can also be instantiated since it extends Point1.

upvoted 0 times

...

Willetta

18 days ago

The correct answer is B) Point1. The Point1 class can be instantiated because it extends the abstract Graphics class and implements the required draw() method.

upvoted 0 times

Darrin

2 days ago

A) Graphics

upvoted 0 times

...

Natalya

22 days ago

I agree with Ronny, Point1 is the only class that can be instantiated because it extends Graphics.

upvoted 0 times

...

Ronny

23 days ago

I think only Point1 can be instantiated.

upvoted 0 times

...