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Web-Development-Applications Exam Topics - High Web-Development-Applications Passing Score

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WGU Web Development Applications Sample Questions (Q21-Q26):

NEW QUESTION # 21
A web page has the following CSS code:

Which selector should a developer use to invoke the CSS?

A. Style
B. class
C. Attribute
D. id

Answer: D

Explanation:
To invoke the CSS provided, an ID selector is used. In CSS, the ID selector is used to style the element with the specific id attribute.
* CSS ID Selector: The syntax for the ID selector is #id, where id is the id attribute value of the HTML element.
* Usage Example:
#black {
color: black;
}
This CSS rule will apply the color: black; style to the element with id="black".
* Example in HTML:
<div id="black">This text will be black.</div>
References:
* MDN Web Docs on ID Selectors
* W3C CSS Specification on Selectors

NEW QUESTION # 22
What is the used to render images dynamically?

A. Canvas
B. MPEG-4
C. Ogg
D. H.264

Answer: A

Explanation:
The <canvas> element in HTML5 is used to render images and graphics dynamically through JavaScript. It is a powerful feature for creating graphics, game visuals, data visualizations, and other graphical content directly in the browser.
* Canvas Element: The <canvas> element is an HTML tag that, with the help of JavaScript, can be used to draw and manipulate graphics on the fly.
* Usage Example:
<canvas id="myCanvas" width="200" height="100"></canvas>
<script>
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
ctx.fillStyle = "#FF0000";
ctx.fillRect(0, 0, 200, 100);
</script>
In this example, a red rectangle is drawn on a canvas element.
References:
* MDN Web Docs on <canvas>
* W3C HTML Canvas 2D Context Specification

NEW QUESTION # 23
What is the effect of using the in-line validation process during user input?

A. More successful form completion rates
B. Larger number of errors created
C. Slower rate of form completion
D. Increased computation on the server

Answer: A

Explanation:
Inline validation during user input provides immediate feedback to the user about the correctness of their input. This real-time feedback helps users correct mistakes as they go, leading to higher rates of successful form completion.
* Inline Validation: Inline validation refers to checking the validity of input data as it is entered, rather than waiting until the form is submitted. This helps users to receive immediate feedback and correct errors on the spot.
* Benefits:
* Immediate Feedback: Users can correct mistakes immediately, which helps reduce frustration and confusion.
* Increased Success Rates: By providing real-time feedback, users are more likely to complete the form correctly, resulting in higher completion rates.
* User Experience: Improves the overall user experience by making the process more interactive and user-friendly.
References:
* Nielsen Norman Group on Inline Validation
* MDN Web Docs on Constraint Validation

NEW QUESTION # 24
Which element relies on the type attribute to specify acceptable values during form entry?

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

Answer: C

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 # 25
Which CSS transformation method should a developer use to reposition an element horizontally on the 2-D plane?

A. Scalex(n)
B. Scale (x,y)
C. Skewx (angle)
D. Translatex(n)

Answer: D

Explanation:
The translateX(n) method in CSS is used to move an element horizontally on the 2-D plane by a specified distance. This transformation repositions the element along the X-axis.
* translateX(n) Method: The translateX(n) function moves an element horizontally by n units. Positive values move the element to the right, while negative values move it to the left.
* Usage Example:
element {
transform: translateX(100px);
}
In this example, the element is moved 100 pixels to the right.
* Properties:
* n: This represents the distance to move the element. It can be specified in various units such as pixels (px), percentages (%), ems (em), etc.
References:
* MDN Web Docs on transform
* W3C CSS Transforms Module Level 1

NEW QUESTION # 26
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