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WGU Web Development Applications Sample Questions (Q11-Q16):

NEW QUESTION # 11
Given the following code:

What is the value of the variable data when the code runs?

A. Undefined
B. Null
C. An empty string
D. A single-character string

Answer: C

Explanation:
In JavaScript, assigning an empty pair of quotes to a variable creates an empty string.
* Variable Assignment:
* Given the code:
var data = "";
* The variable data is assigned an empty string.
* Explanation:
* Option A: Null is incorrect because the variable is assigned an empty string, not null.
* Option B: A single-character string is incorrect because the string is empty.
* Option C: Undefined is incorrect because the variable is assigned a value, even though it is an empty string.
* Option D: An empty string is correct because "" represents an empty string.
* References:
* MDN Web Docs - String
* W3Schools - JavaScript Strings

NEW QUESTION # 12
A web designer inserts an image into a web page.
Which CSS attribute should this designer use to ensure that there is one of pixel of space between the line image and the surrounding elements?

A. border
B. Padding
C. Margin
D. Content

Answer: C

Explanation:
To ensure that there is one pixel of space between the image and the surrounding elements, the margin property should be used.
* CSS Margin Property: The margin property is used to create space around elements, outside of any defined borders.
* Usage Example:
img {
margin: 1px;
}
In this example, the margin: 1px; rule sets a margin of 1 pixel around the image, creating the desired space.
References:
* MDN Web Docs on Margin
* W3C CSS Specification on Margin

NEW QUESTION # 13
What is the purpose of cascading style sheets (CSSs)?

A. Setting rules to define how page content looks when rendered
B. Providing functionality that was previously provided by plug-ins
C. Changing the content of a web page dynamically
D. Structuring and describing web page content

Answer: A

Explanation:
Cascading Style Sheets (CSS) are used to control the presentation of web pages, including aspects such as layout, colors, fonts, and other visual styles. They are a cornerstone technology of the World Wide Web, along with HTML and JavaScript. Here's a detailed breakdown:
* Purpose of CSS: CSS is designed to enable the separation of document content (written in HTML or a similar markup language) from document presentation, including elements such as the layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, enable multiple web pages to share formatting, and reduce complexity and repetition in the structural content.
* Setting Visual Rules: CSS allows developers to define rules that specify how different elements of a web page should be displayed. For example, CSS rules can change text color, font size, spacing between elements, and even the overall layout of the web page. These rules are applied by the browser to render the web page according to the defined styles.
* Cascading Nature: The term "cascading" in CSS refers to the process of combining multiple style sheets and resolving conflicts between different CSS rules. This allows developers to use different sources of style information, which can be combined in a hierarchical manner. For instance, a browser style sheet, an external style sheet, and inline styles can all contribute to the final rendering of a web page.
* Benefits of CSS:
* Consistency: By using CSS, developers can ensure a consistent look and feel across multiple web pages.
* Maintainability: CSS makes it easier to update the visual presentation of a web page without altering the HTML structure. This is particularly useful for maintaining large websites.
* Reusability: CSS rules can be reused across multiple pages, reducing redundancy and making it easier to implement changes globally.
* Examples of CSS:
css
Copy code
body {
background-color: lightblue;
}
h1 {
color: navy;
margin-left: 20px;
}
In this example, the body element is given a light blue background color, and the h1 element is styled with a navy color and a left margin of 20 pixels.
References:
* MDN Web Docs on CSS
* W3C CSS Specifications

NEW QUESTION # 14
Which element relies on the type attribute to specify acceptable values during form entry?

A. <Button>
B. <Option>
C. <Select>
D. <input>

Answer: D

Explanation:
The <input> element relies on the type attribute to specify acceptable values during form entry. Different input types include text, email, number, password, etc.
* Input Types: The type attribute determines the kind of input control and the acceptable values for that control.
* Usage Example:
<input type="email" placeholder="Enter your email">
<input type="number" min="1" max="10">
These input elements specify acceptable values for email and number inputs respectively.
References:
* MDN Web Docs on <input>
* W3C HTML Specification on Input Types

NEW QUESTION # 15
Given the following CSS code:

Which portion is the rule?

Answer: A

Explanation:
In CSS, a rule is composed of a selector and a declaration block. The rule is the entire part that defines how styles should be applied to elements matching the selector.
* CSS Rule Components:
* Selector: Identifies the HTML elements to be styled (e.g., body, .name, #item).
* Declaration Block: Contains one or more declarations, each consisting of a property and a value, enclosed in curly braces {}.
* Example Analysis:
* Option A:
body {
background-color: white;
}
This is the full rule, consisting of the selector body and the declaration block { background-color: white; }.
* Option B:
background-color: white;
This is just a declaration, not a complete rule.
background-color: white,
This is an incorrect declaration due to the comma, and not a complete rule.
* Option D:
color: black
This is just a declaration, not a complete rule.
* References:
* W3C CSS Syntax and Basic Data Types Module Level 3
* MDN Web Docs - CSS Syntax

NEW QUESTION # 16
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WGU Web Development Applications Sample Questions (Q11-Q16):

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