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Title: Valid Web-Development-Applications Exam Dumps Ensure you a HIGH SCORE (2024) [Q15-Q38]

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 Valid Web-Development-Applications Exam Dumps Ensure you a HIGH SCORE (2024)
Pass Web-Development-Applications Exam with Latest Questions


NEW QUESTION 15A javaScript programmer defines the following function:What is the name of the function?
 Function
 Number
 Return
 square
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 SpecificationNEW QUESTION 16Given the following CSS code:Which type of selector is used?
 Group
 Class
 Element
 ID
The given CSS code uses the #name selector, which is an ID selector. The ID selector is used to style an element with a specific id attribute.* ID Selector: In CSS, the ID selector is used to style the element with the specific id. The syntax for the ID selector is #id, where id is the id attribute value of the HTML element.* Usage Example:#name {text-align: left;}This CSS rule will apply the text-align: left; style to the element with id=”name”.* ID Selector Characteristics:* An ID must be unique within a document, meaning it can be used only once per page.* ID selectors are more specific than class selectors and element selectors.* Example in HTML:<div id=”name”>This is a div with ID “name”.</div>References:* MDN Web Docs on CSS Selectors* W3C CSS Specification on SelectorsNEW QUESTION 17What should a developer correct before revalidating after a code validator reports multiple errors in code?
 Only CSS errors
 The last reported error
 Only JavaScript errors
 The first reported error
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 ServiceNEW QUESTION 18Given the following HTML statement:And the following style:Which line of the changes the background color of the <div> tag when the width is between 600 pixels and900 pixels or more than 1, 100 pixels?
 
 
 
 
The given HTML and CSS statements define a class named “example” and use media queries to change the background color of the <div> element based on the screen width. The correct CSS media query to change the background color of the <div> tag when the width is between 600 pixels and 900 pixels or more than 1100 pixels is:Copy code@media screen and (max-width: 900px) and (min-width: 600px), (min-width: 1100px) { div.example { background: yellow;}}* Understanding Media Queries:* @media screen: Applies the styles only for screens.* (max-width: 900px) and (min-width: 600px): Targets screen widths between 600 and 900 pixels.* , (comma): Acts as an “or” operator in media queries.* (min-width: 1100px): Targets screen widths greater than or equal to 1100 pixels.* Option C Explanation:* This option uses the correct media query syntax to apply the background color change when the screen width is between 600 and 900 pixels or when it is 1100 pixels or more.References:* MDN Web Docs on Media Queries* W3C CSS Media Queries Level 4The correct CSS media query based on the provided options is:@media screen and (max-width: 900px) and (min-width: 600px), (min-width: 1100px) { div.example { background: yellow;}}References for Media Queries:* MDN Web Docs on Using Media Queries* W3C CSS Media Queries Module Level 4NEW QUESTION 19Which code segment contains a conditional expression?
 
 
 
 
A conditional expression in JavaScript is an expression that evaluates to a boolean value and controls the execution flow based on its result. The conditional (ternary) operator ? : is used for conditional expressions.* Example Analysis:* Option A:var result = dataCount;* This is a simple assignment, not a conditional expression.* Option B:var result = count++ > 10;* This is a comparison but not a complete conditional expression.* Option C:var result = dataCount++ * 1000 == 3000000;* This is an arithmetic operation followed by a comparison but not a complete conditional expression.* Option D:javascriptCopy codevar result = count >= 10 ? “Done” : getResult();* This is a conditional (ternary) expression. If count is greater than or equal to 10, result will be “Done”, otherwise, it will call getResult().* References:* MDN Web Docs – Conditional (ternary) operator* W3Schools – JavaScript ConditionsNEW QUESTION 20A 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?
 Relative
 Fixed
 Absolute
 Static
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 3NEW QUESTION 21Which feature was introduced in HTML5?
 Addition of CSS in the HTML file
 Adherence to strict XML syntax rules
 Ability to hyperlink to multiple web pages
 Native drag-and-drop capability
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:htmlCopy code<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 DropHTML5’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.NEW QUESTION 22Which layout design is easiest to manage on a variety of devices?
 Flow
 Table
 Grid
 Border
A grid layout is easiest to manage across a variety of devices due to its flexibility and ability to create responsive designs that adapt to different screen sizes.* Grid Layout:* Responsive Design: Grid layouts can be easily adjusted using media queries to provide a consistent user experience across devices.* CSS Grid Example:container {display: grid;grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));}* Other Options:* A. Flow: Often used for text, not layout.* B. Table: Outdated and not responsive.* D. Border: Not commonly used for complex layouts.* References:* MDN Web Docs – CSS Grid Layout* W3Schools – CSS Grid LayoutNEW QUESTION 23Given the following CSS code:Which portion is the rule?
 
 
 
 
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: blackThis is just a declaration, not a complete rule.* References:* W3C CSS Syntax and Basic Data Types Module Level 3* MDN Web Docs – CSS SyntaxNEW QUESTION 24What does a form field default to if the type attribute is omitted from a form?
 Date
 Text
 Range
 number
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 TypesNEW QUESTION 25Which structure tag should a developer use to place contact information on a web page?
 <Aside>
 <Main>
 <Nav>
 <footer>
The <footer> tag is used to define a footer for a document or a section. A footer typically contains information about the author of the document, contact information, copyright details, and links to terms of use, privacy policy, etc. It is a semantic element in HTML5, which means it clearly describes its meaning to both the browser and the developer.* Purpose of <footer>: The <footer> element represents a footer for its nearest sectioning content or sectioning root element. It typically contains information like:* Contact information* Copyright information* Links to related documents* Information about the author* Usage Example:<footer><p>Contact us at: contact@example.com</p><p>© 2024 Example Company</p></footer>In this example, the <footer> tag encloses contact information and copyright details.* Semantic Importance: Using semantic elements like <footer> enhances the accessibility of the document and provides better context for search engines and other user devices.References:* MDN Web Docs on <footer>* W3C HTML5 Specification on <footer>NEW QUESTION 26What is the used to render images dynamically?
 MPEG-4
 Canvas
 Ogg
 H.264
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 SpecificationNEW QUESTION 27A web page has the following CSS code:Which selector should a developer use to invoke the CSS?
 Attribute
 Style
 id
 class
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 SelectorsNEW QUESTION 28A web developer need to ensure that a message appears if the user’s browser does not support the audio files on a web page.How should this designer code the audio element?
 
 
 
 
To ensure that a message appears if the user’s browser does not support the audio files on a web page, the developer should use the <audio> element correctly. The <audio> element supports fallback content, which is displayed if the browser does not support the specified audio formats.* Correct Usage:* Fallback Content: Place the message as fallback content inside the <audio> element. Browsers that do not support the audio format will display this message.* Example:<audio><source src=”audio/song.mp3″ type=”audio/mpeg” />No mpeg support.</audio>* Explanation of Options:* Option A: Incorrect. The alt attribute is not valid for the <source> element.* Option B: Incorrect. The alt attribute is not valid for the <audio> element.* Option C: Incorrect. The alt attribute is used incorrectly in the <audio> element.* Option D: Correct. The message “No mpeg support.” is placed correctly as fallback content inside the <audio> element.* References:* W3C HTML5 Specification – The audio element* MDN Web Docs – <audio>Using the fallback content inside the <audio> element ensures that users with unsupported browsers receive a meaningful message, improving the overall user experience.NEW QUESTION 29Which markup ensures that the data entered are either a five-digit zip code or an empty string?
 <input pattern=/d(5)”>
 <input type=”number” value=”s”
 Input required min=”s” max=”s”
 Input class =” (0-9) (5)”>
The pattern attribute in the <input> element is used to define a regular expression that the input value must match for it to be valid. The pattern d{5} ensures that the data entered is either a five-digit zip code or an empty string (if the required attribute is not used).* Pattern Explanation:* d{5}: Matches exactly five digits.* This ensures that only a five-digit number or an empty string (if not required) is valid.* Usage Example:<input type=”text” pattern=”d{5}” placeholder=”Enter a 5-digit zip code”> This ensures that the input matches a five-digit zip code.References:* MDN Web Docs on pattern* Regular Expressions DocumentationNEW QUESTION 30Given the following code:What is the value of the variable data when the code runs?
 Null
 A single-character string
 Undefined
 An empty string
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 StringsNEW QUESTION 31Which framework assists designers with adaptive page layout?
 Modernize
 Bootstrap
 React
 Knockout
Bootstrap is a popular front-end framework that assists designers in creating adaptive and responsive page layouts easily.* Bootstrap:* Responsive Design: Bootstrap provides a responsive grid system, pre-styled components, and utilities that help in designing adaptive layouts.* Example:<div class=”container”><div class=”row”><div class=”col-sm-4″>Column 1</div><div class=”col-sm-4″>Column 2</div><div class=”col-sm-4″>Column 3</div></div></div>* Other Options:* A. Modernize: Not a framework, but a JavaScript library to detect HTML5 and CSS3 features.* C. React: A JavaScript library for building user interfaces, not specifically for layout.* D. Knockout: A JavaScript library for implementing MVVM pattern, not specifically for layout.* References:* Bootstrap Documentation* MDN Web Docs – Responsive designThese answers ensure accurate and comprehensive explanations for the given questions, supporting efficient learning and understanding.NEW QUESTION 32What is the default behavior of overlay elements?
 Last element listed appears on top
 Last element listed appears on bottom
 First element listed is invisible
 First element listed is transparent
In CSS, when elements overlap, the default behavior is that the last element listed in the HTML document appears on top.* Stacking Context:* Default Behavior: Elements are stacked in the order they appear in the HTML. The last element in the document tree is rendered on top.* z-index: You can control stacking order using the z-index property, but without it, the default order applies.* Example:* Given HTML:<div style=”position: absolute; width: 100px; height: 100px; background-color: red;”></div><div style=”position: absolute; width: 100px; height: 100px; background-color: blue;”></div>* The blue div will be on top of the red div because it appears later in the HTML document.* References:* MDN Web Docs – Stacking context* W3C CSS Positioned Layout Module Level 3By understanding these fundamental CSS concepts, developers can create more effective and visually appealing web layouts.NEW QUESTION 33Which tag is required when importing the jQuery library?
 Section
 Body
 Script
 meta
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>NEW QUESTION 34Given the following HTML code:Which line of code should replace the first line to ensure that users can pause and restart the video?
 
 
 
 
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>NEW QUESTION 35Which History API object is called when a browser window’s document history changes?
 Window, location
 Window, onpopstate
 Window, name
 Window, open
The onpopstate event is triggered in the window object when the active history entry changes, such as when the user navigates to a different page using the back or forward buttons in the browser.* History API and onpopstate:* Event: window.onpopstate* Description: This event is fired when the user navigates to a session history entry, i.e., when moving backwards or forwards in the browser history.* Example:window.onpopstate = function(event) {console.log(“location: ” + document.location + “, state: ” + JSON.stringify(event.state));};* Other Options:* A. Window, location: location is an object containing information about the current URL.* C. Window, name: name is a property to set or get the name of a window.* D. Window, open: open is a method to open a new browser window or tab.* References:* MDN Web Docs – window.onpopstate* W3Schools – JavaScript History APINEW QUESTION 36Given the following markup:Where does the image align in relation to the text?
 The top of The image aligns to the top of Hello World
 The lop of the image aligns the bottom of Hello world.
 The bottom of the Image aligns to the bottom of Hello World
 The bottom of the image aligns to the top of Held world.
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 3NEW QUESTION 37What is a characteristic of JavaScript code?
 It runs inside a web browser
 It implements across browsers.
 It must be compiled lo work.
 It remains hidden from the user.
JavaScript is a scripting language primarily used for creating and controlling dynamic website content. Here are some characteristics:* Runs Inside a Web Browser: JavaScript code is executed in the web browser, making it possible to create interactive and dynamic web pages.* Cross-Browser Compatibility: JavaScript is designed to be compatible across different web browsers.* Interpreted Language: JavaScript is interpreted, meaning it does not need to be compiled before execution.* Accessible to Users: JavaScript code is not hidden from the user; it can be viewed in the browser’s developer tools.References:* MDN Web Docs on JavaScript* W3C JavaScript IntroductionNEW QUESTION 38Which element attaches an external CSS document to a web page?
 <style>
 <Link>
 <Script>
 <Meta>
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. Loading …






	
	

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