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WGU C777 Web Development | Post Assessment (100+ Qs) | HTML5, CSS3, JavaScript, APIs, Accessibility

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This document contains 100+ fully verified questions and answers from the WGU C777 Web Development Foundations Post Assessment for the 2025/2026 academic year. It is structured for learners aiming to pass the course’s final assessment with a deep understanding of core web technologies. The content aligns with industry standards and W3C recommendations, making it ideal for both academic success and professional development in front-end web design. Main topics covered: HTML5 & Forms: semantic elements, output, datalist, placeholder, autocomplete, form validation techniques, select behavior CSS3 Styling & Layout: selectors (id, class, first-of-type, ~), positioning (static, relative, absolute), responsive design (media queries), shadows, rounded corners, transitions Responsive Design Techniques: liquid layouts, media queries, mobile-first design principles JavaScript Essentials: functions, variable types, alert() & prompt(), event handling (load, mouseout, onerror), arithmetic operations, syntax rules, debugging DOM Manipulation & APIs: HTML5 Canvas, Geolocation API, File API, local storage, form behavior Accessibility & User Experience: form hints, autofocus, dynamic suggestions, visual transitions Advanced Integration Topics: AJAX, WebGL support, external scripts vs. inline, compatibility concerns across user agents Validation & Best Practices: W3C validation tools, CSS inheritance, error prevention strategies This study guide is perfect for: WGU students enrolled in C777 Learners preparing for web development certifications or exams Self-taught front-end developers reviewing foundational material Aspiring web designers aiming to master HTML5, CSS3, and JavaScript integration Anyone building responsive, accessible, and standards-compliant web applications The file is graded A+ and uses real-world examples and code snippets to test understanding and practical application of concepts in responsive and interactive design. Keywords: WGU C777, web development, HTML5, CSS3, JavaScript, APIs, responsive design, form validation, datalist, media queries, DOM, Canvas, File API, Geolocation, mobile web, semantic tags, transitions, accessibility, scripting, event handling, CSS layout, exam prep

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WGU C777 Post Assessment Selections
2025/2026 Exam Questions and Answers
| A+ Score Assured



What is the term for a relatively small application developed exclusively for

mobile devices? - 🧠 ANSWER ✔✔App


What three technologies used toegther provide Web pages that easily

adapt to smartphones, tablets, gaming devices and smart TVs, as well as

traditional computers? - 🧠 ANSWER ✔✔HTML5, Cascading Style Sheets

(CSS) and JavaScript

,Many markup code validators exist, but the most authoritative is the W3C

Markup Validation Service. How does the W3C Markup Validation Service

determine to what HTML standard to validate your code?

Selena is embedding a video in her HTML5 page. Which attribute should

she use to identify the location and file name of the video? - 🧠 ANSWER

✔✔The src attribute


You are using the <video> element to embed a video in your HTML5 page.

Which attribute should you use if you want to identify an image to be

displayed until the Play button is clicked or while the video is downloading?

- 🧠 ANSWER ✔✔The poster attribute


You want to create Web pages that can easily adapt to serve multimedia

content to smartphones, tablets, gaming devices and smart TVs, as well as

traditional desktop computers, without the use of plug-ins. What would be

best suited for this purpose? - 🧠 ANSWER ✔✔HTML5 APIs


Stanley is the senior developer of apps for an organization that is

considered to be at the cutting edge of mobile-device technology. What

should Stanley use to create apps for mobile devices? - 🧠 ANSWER

✔✔HTML5 APIs

, You are a novice Web developer, and your mentor has suggested that you

familiarize yourself with HTML5 and Cascading Style Sheets (CSS). Being

somewhat unfamiliar with CSS, you discover that it is: - 🧠 ANSWER ✔✔a

Web design technology that enables you to determine how the HTML

elements in your Web pages will display.


What are two benefits of CSS? - 🧠 ANSWER ✔✔CSS provides a consistent

look and feel to site pages, and simplifies change management issues.

Consider the following CSS rule:

body {color: #008080:}


Which is the "declaration" portion of this rule? - 🧠 ANSWER ✔✔The portion

inside the curly braces

Consider the following CSS rule:

body {color: #008080:}


Which is the "property" portion of this rule? - 🧠 ANSWER ✔✔The portion

that reads "color"

Using a linked style sheet, you have modified the look and feel of an HTML

page. Because of the concept of inheritance, you notice that: - 🧠 ANSWER



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