What is the primary function of a browser rendering engine?
A Manage sessions
B Display content
C Handle HTTP requests
D Execute JavaScript
A browser rendering engine is responsible for displaying web pages. It parses HTML, CSS, and JavaScript, rendering the page visually for users. It interprets the code to create a viewable, interactive experience in the browser.
Which of these technologies is used for executing low level code in web applications?
A WebAssembly
B CSS
C JavaScript
D HTML
WebAssembly (Wasm) is a low level binary format that enables high performance execution of code in web browsers. It allows languages like C, C++, and Rust to run in the browser, providing faster performance than JavaScript for certain tasks.
What is the primary advantage of WebAssembly over JavaScript?
A More accessible
B More features
C Higher performance
D Easier to use
WebAssembly offers higher performance than JavaScript, especially for compute heavy operations like gaming, video editing, and image processing. It runs directly in the browser, compiled from languages like C, which makes it faster for certain tasks.
What is the purpose of the browser’s rendering engine?
A To connect to the server
B To compile JavaScript
C To store web data
D To process HTML and CSS
The rendering engine processes the HTML and CSS code sent by the web server to display the webpage correctly. It interprets HTML structure, applies styles from CSS, and renders them on the screen for user interaction.
Which of the following is NOT a feature of Web 3.0?
A Smart contracts
B Centralized data storage
C Decentralization
D Blockchain technology
Web 3.0 is characterized by decentralization, where users control their own data, and blockchain technology. Unlike Web 2.0, which relies on centralized data storage, Web 3.0 uses distributed networks to store and secure information.
Which of the following is used to enhance the performance of web applications by running code outside the main thread?
A Service Workers
B AJAX
C Web Workers
D WebAssembly
Web Workers allow web applications to run JavaScript code in the background without affecting the main UI thread. This allows for non blocking operations such as data processing, improving the performance of web apps.
What is the main benefit of Web 3.0 technologies like blockchain for web development?
A Decentralized control
B Improved page styling
C Easier UI design
D Faster content delivery
Web 3.0 technologies like blockchain provide decentralized control over data, enabling users to own and control their information without relying on central authorities. This promotes transparency, security, and privacy in web interactions.
What is the role of a browser rendering engine in executing JavaScript?
A Execute server side scripts
B Manage browser tabs
C Display CSS styles
D Parse and execute JavaScript code
The browser’s rendering engine parses HTML, CSS, and JavaScript code. It processes JavaScript to modify page elements dynamically, handle user interactions, and enhance the overall user experience with interactive content.
Which Web 3.0 technology allows peer to peer transactions without intermediaries?
A WebSockets
B Cloud storage
C Blockchain
D WebAssembly
Blockchain technology enables peer to peer transactions and data exchanges without the need for intermediaries. It ensures secure, transparent transactions using decentralized networks, a core component of Web 3.0 applications.
Which of these enables faster performance for web applications by running in a low level virtual machine in the browser?
A WebAssembly
B React
C HTML5
D JavaScript
WebAssembly enables high performance execution in the browser by compiling code from languages like C or Rust into a binary format. This allows tasks such as image processing or gaming to run faster than JavaScript.
Which browser rendering engine is used by Google Chrome?
A Gecko
B Trident
C WebKit
D Blink
Google Chrome uses the Blink rendering engine, a fork of WebKit. Blink is responsible for parsing HTML, CSS, and JavaScript, rendering content on the screen, and ensuring compatibility across different platforms and devices.
What is a key feature of Web 3.0 that distinguishes it from earlier versions of the web?
A Centralized data control
B Fast page load times
C Personal data privacy
D Improved graphics
Web 3.0 focuses on giving users control over their personal data, using decentralized technologies like blockchain. This contrasts with earlier versions of the web, where data is often controlled by central entities like large corporations.
Which of the following is true about WebAssembly?
A It is slower than JavaScript
B It allows high performance computing in the browser
C It runs in the background
D It is not compatible with browsers
WebAssembly allows high performance code to run directly in the browser. It is ideal for applications requiring heavy computation, such as video games or 3D rendering, enabling faster performance than JavaScript in certain use cases.
Which browser engine is used by Safari?
A WebKit
B Blink
C Trident
D Gecko
Safari uses the WebKit rendering engine to interpret and render HTML, CSS, and JavaScript. WebKit was originally developed by Apple and is known for its speed and efficiency in rendering content on web pages.
What is the function of WebAssembly in web applications?
A Create UI components
B Manage user authentication
C Process large data efficiently
D Handle HTTP requests
WebAssembly allows web applications to process large amounts of data efficiently by executing low level code directly in the browser. It provides a performance boost, particularly for tasks such as gaming, image processing, and cryptographic operations.