Question 1

A pseudo-class begins with a colon and it conditionally selects elements from a group of elements specified by the selector at the immediate left of the colon. If there is no explicit selector, then the implicit selector is ______.

Accepted Answer

The answer of A pseudo-class begins with a colon and...

Question 2

The ______ image file format was invented in 1996 as an open-source alternative to the GIF format because the GIF format was copyright protected.

Accepted Answer

The answer of The ______ image file format was invented...

Question 3

By default, browsers use purple to display links that have been clicked recently. They are formally known as ______ links.

Accepted Answer

The answer of By default, browsers use purple to display...

Question 4

You should always surround attribute values with _______, thus forming a string.

Accepted Answer

The answer of You should always surround attribute values with...

Question 5

What does it mean for container elements to be properly nested?

Accepted Answer

The answer of What does it mean for container elements...

Question 6

To improve the following code's style, what should you do with the " character references?

And God said "Let there be light."

Accepted Answer

The answer of To improve the following code's style, what...

Question 7

Consider the following code:
<img id="zoomba-class" src="zoomba.j p g" alt="zoomba class">
Assume the above img element is positioned within the current web page. Provide an element that would link to the above img element.

Accepted Answer

The answer of Consider the following code:
<img id="zoomba-class" src="zoomba.j p...

Question 8

What is the purpose of the ol element's start attribute?

Accepted Answer

The answer of What is the purpose of the ol...

Question 9

To establish relative positioning, what value should be used with the position property?

Accepted Answer

The answer of To establish relative positioning, what value should...

Question 10

To handle browsers that support different audio file formats, you can provide multiple options between your audio start and end tags. Which of the following could serve as a valid option? A) B)

Accepted Answer

The correct syntax for providing multiple audio sources is using the tag within the

Question 11

Which of the following is a valid CSS rule that generates a color gradient background?
A) body {background-image: linear-gradient(to right, blue, red);}
B) body {background-image: color-spectrum(horizontal, blue, red);}
C) body {background-color: spectrum(blue, red);}

Accepted Answer

The correct syntax for creating a gradient in CSS is using the `linear-gradient` function, as shown in option A.

Question 12

An advantage of client-side processing over server-side processing is that client-side processing:
A) tends to be more efficient when the calculations require a lot of programming code.
B) tends to be more efficient when the calculations require large amounts of data.
C) is better for proprietary code.
D) tends to be faster.

Accepted Answer

Client-side processing tends to be faster because it reduces the need for data to be sent back and forth between the client and server, thus minimizing latency and server load.

Question 13

Which of the following is the best way to prompt for number of children and store the input as a number?
A) numOfKids = parseInt(prompt("Number of children:", ""));
B) numOfKids = parseFloat(prompt("Number of children:", ""));
C) numOfKids = confirm("Number of children:"));
D) prompt(numOfKids, "Number of children:"));

Accepted Answer

The `parseInt` function is used to convert a string input from the `prompt` function into an integer, which is suitable for storing the number of children.

Question 14

A text control is an example of a "one line plain text edit control." Which of the following attribute-value pairs could be added to an input element to create another type of one line plain text edit control?
A) type="edit"
B) type="tel"
C) type="textarea"

Accepted Answer

The type="tel" attribute-value pair creates a one line plain text edit control that is specifically designed for entering telephone numbers.

Question 15

Which of the following displays a numOfPurchases variable's value in the browser's debugging frame? A) console.log("numOfPurchases = " + numOfPurchases); B) debug.display("numOfPurchases = " + numOfPurchases); C) numOfPurchases = %numOfPurchases

Accepted Answer

The `console.log()` function is used in JavaScript to print messages to the browser's console, which is part of the debugging tools.

Question 16

Suppose you have a class named Student with a class variable named numOfStudents. How should you access the numOfStudents property?
A) Use numOfStudents by itself.
B) this.numOfStudents
C) Student.numOfStudents

Accepted Answer

Class variables should be accessed using the class name, so you should use Student.numOfStudents.

Question 17

Suppose you have a class named Employee with a name property and a standard setName method. What is the situation after the following code executes?
Var emp1 = new Employee("Emme");
Var emp2 = emp1;
Emp2.setName("Jessie");
A) For their name properties, emp1 stores "Emme" and emp2 stores "Jessie".
B) For their name properties, both emp1 and emp2 store "Emme".
C) For their name properties, both emp1 and emp2 store "Jessie".
D) Both emp1 and emp2 store null.

Accepted Answer

Both emp1 and emp2 reference the same Employee object, so changing the name through emp2 affects emp1 as well.

Question 18

When you call the addEventListener method, you pass two arguments to it. The first argument is for the name of a predefined event built into the DOM. What is the second argument for?
A) The name of a function that serves as a listener for the first argument's event firing
B) The name of the class where the first argument's event is defined
C) The control whose event is being listened to

Accepted Answer

The second argument for the addEventListener method is the function that will be executed when the event specified in the first argument is fired. This function acts as the event listener.

Question 19

What do canvas's transformation operations allow you to do with graphics objects?
A) Move in a straight line, rotate, and scale
B) Duplicate, delete, and move in a straight line
C) Duplicate and create

Accepted Answer

Canvas's transformation operations allow you to move, rotate, and scale graphics objects, enabling dynamic manipulation of their position, orientation, and size.

Question 20

In JavaScript, which of the following creates an empty array?
A) var [] arr1;
B) var arr1 = new Array();
C) var arr1();
D) var arr1;

Accepted Answer

var arr1 = new Array(); creates an empty array in JavaScript.

Quiz 13: Web Development and HTML/CSS

A pseudo-class begins with a colon and it conditionally selects elements from a group of elements specified by the selector at the immediate left of the colon. If there is no explicit selector, then the implicit selector is ______.

The ______ image file format was invented in 1996 as an open-source alternative to the GIF format because the GIF format was copyright protected.

By default, browsers use purple to display links that have been clicked recently. They are formally known as ______ links.

You should always surround attribute values with _______, thus forming a string.

What does it mean for container elements to be properly nested?

To improve the following code's style, what should you do with the " character references? <p>And God said "Let there be light."</p>

Consider the following code: <img id="zoomba-class" src="zoomba.j p g" alt="zoomba class"> Assume the above img element is positioned within the current web page. Provide an element that would link to the above img element.

What is the purpose of the ol element's start attribute?

To establish relative positioning, what value should be used with the position property?

To handle browsers that support different audio file formats, you can provide multiple options between your audio start and end tags. Which of the following could serve as a valid option?

Which of the following is a valid CSS rule that generates a color gradient background?

An advantage of client-side processing over server-side processing is that client-side processing:

Which of the following is the best way to prompt for number of children and store the input as a number?

A text control is an example of a "one line plain text edit control." Which of the following attribute-value pairs could be added to an input element to create another type of one line plain text edit control?

Which of the following displays a numOfPurchases variable's value in the browser's debugging frame?

Suppose you have a class named Student with a class variable named numOfStudents. How should you access the numOfStudents property?

Suppose you have a class named Employee with a name property and a standard setName method. What is the situation after the following code executes? Var emp1 = new Employee("Emme") ; Var emp2 = emp1; Emp2.setName("Jessie") ;

When you call the addEventListener method, you pass two arguments to it. The first argument is for the name of a predefined event built into the DOM. What is the second argument for?

What do canvas's transformation operations allow you to do with graphics objects?

In JavaScript, which of the following creates an empty array?