パスできるWeb-Development-Applications試験最速合格保証2025問題集！ [Q34-Q55]

パスできるWeb-Development-Applications試験最速合格保証2025問題集！

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質問 # 34
What allows a scripting language to manipulate elements on a web page?

• A. XML
• B. CSS
• C. DOM
• D. HTML

正解：C

解説：
The Document Object Model (DOM) is an API for HTML and XML documents that defines the logical structure of documents and the way a document is accessed and manipulated.
* DOM Explanation:
* The DOM represents the page so that programs can change the document structure, style, and content.
* It provides a way for scripts to update the content, structure, and style of a document while it is being viewed.
* Explanation:
* Option A: CSS is incorrect because it is used for styling web pages.
* Option B: XML is incorrect because it is a markup language, not an API for manipulating web page elements.
* Option C: HTML is incorrect because it is the markup language used to create web pages, not an API for manipulation.
* Option D: DOM is correct because it allows a scripting language to manipulate elements on a web page.
* References:
* MDN Web Docs - DOM
* W3Schools - JavaScript HTML DOM

質問 # 35
Given the following markup and no style sheet:

Which control does the input element render?

• A. Drop-down
• B. Button
• C. Text
• D. Slider

正解：D

解説：
The type="range" attribute in an <input> element renders a slider control.
* HTML Input Type range:
* Purpose: The range type is used for input fields that should contain a value from a range of numbers.
* Example:
* Given the HTML:
<input id="range" name="range" type="range">
* Explanation:
* This will render as a slider that the user can move to select a value within a range.
* References:
* MDN Web Docs - <input type="range">
* W3Schools - HTML Input Range

質問 # 36
What should a developer correct before revalidating after a code validator reports multiple errors in code?

• A. Only CSS errors
• B. Only JavaScript errors
• C. The first reported error
• D. The last reported error

正解：C

解説：
When using a code validator to check your HTML, CSS, or JavaScript code, it's essential to address errors in a systematic manner. The correct approach is to correct the first reported error before revalidating. This method is recommended because often, the first error can cause a cascade of subsequent errors or warnings.
By fixing the first error, you may automatically resolve other errors that were reported later.
* Reasoning:
* Cascading Errors: The first error in the code might lead to multiple subsequent errors. Fixing it can sometimes resolve those cascading errors, reducing the overall number of errors in the next validation.
* Logical Flow: Addressing errors in the order they appear maintains a logical flow and makes debugging more manageable.
* Steps to Follow:
* Step 1: Run the code through the validator.
* Step 2: Identify the first reported error.
* Step 3: Correct the first error.
* Step 4: Revalidate the code to check if the error count has reduced or if new errors appear.
* Step 5: Repeat the process until all errors are resolved.
* References:
* W3C Markup Validation Service
* MDN Web Docs - Debugging HTML
* W3C CSS Validation Service

質問 # 37
Which technique should a developer use for text-based hyperlink on mobile web page?

• A. Keeping links uniform
• B. Padding the clickable area around the link
• C. Using dynamic page elements neat the link
• D. Deploying graphical links

正解：B

解説：
When designing text-based hyperlinks for mobile web pages, it is essential to ensure that the links are easily tappable. Adding padding around the clickable area increases the touch target size, making it easier for users to interact with the link on a mobile device.
* Techniques for Mobile-Friendly Links:
* Padding the Clickable Area: By adding padding, you increase the touchable area around the link, which helps prevent user frustration due to missed taps.
* CSS Example:
a {
padding: 10px;
display: inline-block;
}
* Other Options:
* B. Keeping links uniform: This refers to making all links look the same, which is good for consistency but doesn't specifically address the issue of touch targets.
* C. Deploying graphical links: While graphical links can be effective, they do not necessarily improve touch target size for text-based hyperlinks.
* D. Using dynamic page elements near the link: This can lead to a cluttered interface and does not address the touch target issue directly.
* References:
* MDN Web Docs - Touch targets
* Google Developers - Mobile Web Development

質問 # 38
A web designer creates the following HTML code:

Which CSS selector applies only to the first line?

• A. #Header
• B. .header
• C. .Welcome
• D. #Welcome

正解：D

解説：
To apply CSS only to the first line of a particular HTML element, the ID selector #Welcome should be used as per the given HTML structure.
* CSS ID Selector: The ID selector is used to style the element with a specific id.
* Usage Example:
#Welcome {
color: red;
}
In this example, the #Welcome selector will apply the red color style only to the element with id="Welcome".
References:
* MDN Web Docs on ID Selectors
* W3C CSS Specification on Selectors

質問 # 39
A javaScript programmer defines the following function:

What is the name of the function?

• A. Return
• B. Function
• C. square
• D. Number

正解：C

解説：
In JavaScript, the name of a function is defined after the function keyword and before the parentheses that enclose its parameters.
* Function Name: The function name is the identifier used to call the function. It is defined immediately after the function keyword.
* Usage Example:
function square(number) {
return number * number;
}
In this example, the name of the function is square.
References:
* MDN Web Docs on Functions
* ECMAScript Language Specification

質問 # 40
Given the following code:

What is occurring?

• A. JavaScript is using the DOM to make a style change.
• B. An event handler is tracking keyboard strokes.
• C. In-line CSS is styling the <h1> tag.

正解：A

解説：
The given code snippet demonstrates how JavaScript can manipulate the DOM to change the style of an element.
* Code Analysis:
* Given the HTML:
<h1 id="id1">Blog Title</h1>
<button type="button" onclick="document.getElementById('id1').style.color = 'red'">Click Here</button>
* When the button is clicked, the JavaScript code within the onclick attribute changes the color of the h1 element to red.
* Explanation:
* Option A: An event handler tracking keyboard strokes is incorrect because the event handler is tracking a mouse click, not keyboard strokes.
* Option B: JavaScript is using the DOM to make a style change is correct because the onclick attribute contains JavaScript code that modifies the style of the h1 element.
* Option C: In-line CSS is styling the <h1> tag is incorrect because the style change is done via JavaScript, not inline CSS.
* References:
* MDN Web Docs - Document.getElementById()
* W3Schools - JavaScript HTML DOM

質問 # 41
Given the following markup:

Where does the image align in relation to the text?

• A. The top of The image aligns to the top of Hello World
• B. The lop of the image aligns the bottom of Hello world.
• C. The bottom of the Image aligns to the bottom of Hello World
• D. The bottom of the image aligns to the top of Held world.

正解：C

解説：
The CSS property vertical-align: baseline aligns the baseline of the element with the baseline of its parent. For inline elements like images, the baseline alignment means that the bottom of the image aligns with the bottom of the text.
* CSS vertical-align Property:
* Baseline Alignment: Aligns the baseline of the element with the baseline of its parent.
* Example:
<p>Hello World<img src="sample.jpg" style="vertical-align:baseline"></p>
* Analysis:
* The <img> element with vertical-align: baseline will align its bottom with the bottom of the surrounding text "Hello World".
* References:
* MDN Web Docs - vertical-align
* W3C CSS Inline Layout Module Level 3

質問 # 42
Where can users items using the HTML

• A. From a web page to a user's computer
• B. From a user's computer to a web page
• C. From a web page to another web page
• D. From a user's computer to another computer

正解：B

解説：
Using HTML, users can upload files from their computer to a web page using the <input> element with the type="file" attribute.
* File Upload Input: The <input type="file"> element is used in forms to allow users to select files from their local file system to be uploaded to a server.
* Usage Example:
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:
html
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<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
<form action="/upload" method="post" enctype="multipart/form-data">
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload File" name="submit">
</form>
In this example, users can choose a file from their computer and upload it to the specified server endpoint.
References:
* MDN Web Docs on <input type="file">
* W3C HTML Specification on File Upload

質問 # 43
Which layout method causes images to render to small or too large in browser windows of different sizes?

• A. Fluid
• B. Fixed width
• C. Liquid
• D. Relative width

正解：B

解説：
A fixed-width layout method specifies exact pixel values for widths. This approach does not adapt to different screen sizes, leading to images rendering too small or too large on various devices.
* Fixed Width Layout:
* Definition: Uses specific pixel values for the width of elements.
* Example:
container {
width: 800px;
}
* Issues:
* Lack of Flexibility: Does not scale with the size of the viewport, causing images and other elements to appear incorrectly sized on different screen sizes.
* Comparison:
* Fluid/Liquid: Adapts to the screen size using percentages or other relative units.
* Relative Width: Also adapts using units like em or %.
* References:
* MDN Web Docs - Fixed vs. Fluid Layout
* W3C CSS Flexible Box Layout Module Level 1
Using fixed-width layouts can result in poor user experience across different devices, highlighting the importance of responsive design principles.
Top of Form
Bottom of Form

質問 # 44
What is the effect of using the in-line validation process during user input?

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

正解：D

解説：
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

質問 # 45
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. Content
• D. Margin

正解：D

解説：
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

質問 # 46
Given the following HTML code:

Which line of code should replace the first line to ensure that users can pause and restart the video?

• A.
• B.
• C.
• D.

正解：A

解説：
To ensure that users can pause and restart the video, the controls attribute needs to be added to the <video> tag. This attribute provides the user with controls to play, pause, and adjust the volume of the video. The correct line of code that should replace the first line in the provided HTML to achieve this functionality is:
<video width="360" height="270" controls>
Here's the comprehensive explanation:
* controls Attribute: The controls attribute is a boolean attribute. When present, it specifies that video controls should be displayed, allowing the user to control video playback, including pausing, playing, and seeking.
* HTML Structure:
* Original Line:
<video width="360" height="270">
* Revised Line:
<video width="360" height="270" controls>
* Usage Example:
<video width="360" height="270" controls>
<source src="video.mp4" type="video/mp4">
Your browser does not support the HTML5 video element.
</video>
In this example, adding the controls attribute provides the user with play, pause, and volume controls.
References:
* MDN Web Docs on <video>
* W3C HTML5 Specification on <video>

質問 # 47
What does a form field default to if the type attribute is omitted from a form?

• A. Date
• B. Range
• C. Text
• D. number

正解：C

解説：
If the type attribute is omitted from an <input> element, it defaults to text.
* HTML Input Default Type:
* Default Type: The default value for the type attribute in an <input> element is text.
* Example:
* Given the HTML:
<input>
* This will render as a text input field.
* References:
* MDN Web Docs - <input>
* W3Schools - HTML Input Types

質問 # 48
Which method allows the end user to enter text as an answer to a question as the page loads?

• A. alert
• B. Confirm
• C. Write
• D. Prompt

正解：D

解説：
The prompt method in JavaScript displays a dialog box that prompts the user for input, allowing the end user to enter text as an answer to a question when the page loads.
* prompt Method: The prompt method displays a dialog box with an optional message prompting the user to input some text. It returns the text entered by the user or null if the user cancels the dialog.
* Usage Example:
let userInput = prompt("Please enter your name:", "Harry Potter");
console.log(userInput);
In this example, a prompt dialog asks the user to enter their name, and the entered text is logged to the console.
References:
* MDN Web Docs on prompt
* W3C HTML Specification on Dialogs

質問 # 49
Which element attaches an external CSS document to a web page?

• A. <Meta>
• B. <Script>
• C. <Link>
• D. <style>

正解：C

解説：
To attach an external CSS document to a web page, the <link> element is used within the <head> section of the HTML document.
* <link> Element:
* Purpose: Links external resources, such as stylesheets, to the HTML document.
* Attributes:
* rel="stylesheet": Specifies the relationship between the current document and the linked resource.
* href="path/to/stylesheet.css": Specifies the URL of the external stylesheet.
* Example:
<head>
<link rel="stylesheet" href="styles.css">
</head>
* Other Options:
* <style>: Used to embed internal CSS directly within the HTML document, not for linking external CSS.
* <script>: Used to embed or link to JavaScript files.
* <meta>: Provides metadata about the HTML document, not for linking stylesheets.
* References:
* W3C HTML5 Specification - The link element
* MDN Web Docs - <link>
By using the <link> element correctly, you can ensure that your web page is styled with external CSS, maintaining a separation of concerns and making your HTML more manageable.

質問 # 50
Which feature was introduced in HTML5?

• A. Addition of CSS in the HTML file
• B. Adherence to strict XML syntax rules
• C. Native drag-and-drop capability
• D. Ability to hyperlink to multiple web pages

正解：C

解説：
HTML5 introduced several new features that enhanced web development capabilities significantly. One of the notable features is the native drag-and-drop capability.
* Native Drag-and-Drop Capability:
* Description: HTML5 allows developers to create drag-and-drop interfaces natively using the draggable attribute and the DragEvent interface. This means elements can be dragged and dropped within a web page without requiring external JavaScript libraries.
* Implementation:
* Making an Element Draggable: To make an element draggable, you set the draggable attribute to true:
<div id="drag1" draggable="true">Drag me!</div>
* Handling Drag Events: You use event listeners for drag events such as dragstart, dragover, and drop:
document.getElementById("drag1").addEventListener("dragstart", function(event) { event.dataTransfer.setData("text", event.target.id);
});
document.getElementById("dropzone").addEventListener("dragover", function(event) { event.preventDefault();
});
document.getElementById("dropzone").addEventListener("drop", function(event) { event.preventDefault(); var data = event.dataTransfer.getData("text"); event.target.appendChild(document.getElementById(data));
});
* Example: This example demonstrates a simple drag-and-drop operation:
html
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<div id="drag1" draggable="true">Drag me!</div>
<div id="dropzone" style="width: 200px; height: 200px; border: 1px solid black;">Drop here</div>
* References:
* W3C HTML5 Specification - Drag and Drop
* MDN Web Docs - HTML Drag and Drop API
* HTML5 Doctor - Drag and Drop
HTML5's native drag-and-drop feature streamlines the process of creating interactive web applications by eliminating the need for third-party libraries, thus making it a powerful addition to the HTML standard.

質問 # 51
A web page has a section that contains an <article> element. The element is always 10 pixels to the right of its position.
Which type of layout positioning should the <article> element use?

• A. Fixed
• B. Absolute
• C. Static
• D. Relative

正解：D

解説：
Relative positioning in CSS positions an element relative to its normal position. Using position: relative; allows you to adjust the element's position with the top, right, bottom, or left properties.
* CSS Relative Positioning:
* Syntax:
article {
position: relative;
left: 10px;
}
* Description: Moves the element 10 pixels to the right from its normal position.
* Example:
* Given HTML:
<article>Content</article>
* Given CSS:
article {
position: relative;
left: 10px;
}
* Explanation: The <article> element will be positioned 10 pixels to the right of where it would normally appear.
* References:
* MDN Web Docs - position
* W3C CSS Positioned Layout Module Level 3

質問 # 52
Which tag is required when importing the jQuery library?

• A. meta
• B. Section
• C. Script
• D. Body

正解：C

解説：
The <script> tag is required when importing the jQuery library into an HTML document.
* Including jQuery:
* Purpose: The <script> tag is used to embed or reference executable code (JavaScript).
* Example:
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
* Explanation:
* The <script> tag should be placed in the <head> or at the end of the <body> to ensure that the library is loaded before the scripts that depend on it.
* References:
* jQuery Getting Started
* MDN Web Docs - <script>

質問 # 53
Given the following CSS code:

How many seconds elapse before the font-size property begins to increase when a user hovers a mouse pointer over the delay element?

• A. 0
• B. 1
• C. 2
• D. 3

正解：C

解説：
The CSS transition-delay property specifies how long to wait before starting a property transition. In the given CSS code, the transition-delay is set to 2s.
* CSS Transition Properties:
* transition-property: Specifies the CSS property to which the transition is applied (font-size in this case).
* transition-duration: Specifies how long the transition takes (4s).
* transition-delay: Specifies the delay before the transition starts (2s).
Example:
* Given HTML:
<div id="delay">Hover over me</div>
* Given CSS:
#delay {
font-size: 14px;
transition-property: font-size;
transition-duration: 4s;
transition-delay: 2s;
}
#delay:hover {
font-size: 36px;
}
Explanation: When a user hovers over the element with id="delay", it will wait for 2 seconds before the transition effect on font-size starts.
References:
* MDN Web Docs - transition-delay
* W3C CSS Transitions

質問 # 54
Which method retrieves periods updates about the geographic location of a user:

• A. GetContext
• B. WatchPosition
• C. getCurrentPosition
• D. ClearWatch

正解：B

解説：
The watchPosition method in the Geolocation API is used to get periodic updates about the geographic location of a user.
* watchPosition Method: This method calls the provided callback function with the user's current position as the device's location changes.
* Usage Example:
navigator.geolocation.watchPosition(function(position) {
console.log("Latitude: " + position.coords.latitude + ", Longitude: " + position.coords.longitude);
});
In this example, the watchPosition method continuously logs the user's latitude and longitude to the console as the position changes.
References:
* MDN Web Docs on watchPosition
* W3C Geolocation API Specification

質問 # 55
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