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What is a web browser?
A web browser is a software application for retrieving, presenting, and traversing information resources on the World Wide Web.
Which of the following is NOT a browser component?
The back button in a web browser navigates to the most recently viewed page.
True
The first web browser created by Tim Berners Lee was called __________.
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What is the purpose of the address bar in a web browser?
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Which browser was launched by Microsoft?
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Match the following web browser features with their functions:
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What is the function of the rendering engine in a web browser?
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Google Chrome was released in 2008.
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Extensions for Google Chrome can be created using web technologies like __________, __________, and __________.
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Study Notes
Web Browser Definition
- A web browser is a software application used to retrieve, display, and navigate information resources on the internet, commonly called a browser
Web Browser Applications
- The most common web browser application is used to display HTML documents, but can also include PDFs, images, and other web resources
- Users connect to a specific web resource via a URI (Uniform Resource Identifier)
- The W3C (World Wide Web Consortium) maintains the standards for HTML and CSS that dictate how web browsers interpret and display web content
Browser Components
- User Interface: Features like the address bar, back/forward buttons, bookmarking menus, etc.
- Browser Engine: Acts as the intermediary between the user interface and the rendering engine.
- Rendering Engine: Parses and displays the requested content; for instance, it interprets HTML and CSS to render a web page.
- Networking: Handles network communications, such as HTTP requests, using platform-independent interfaces.
- UI Backend: Responsible for drawing basic widgets, like combo boxes and windows, using a platform-independent interface.
- JavaScript Interpreter: Executes JavaScript code.
- Data Storage: Handles local data persistence, such as cookies, as well as storage mechanisms like localStorage, IndexedDB, WebSQL, and FileSystem.
Browser History
- WorldWideWeb: The first web browser, created by Tim Berners Lee in 1990.
- Mosaic: Introduced in 1993, with the added functionality of displaying images and a new graphical user interface.
- Netscape Navigator: Launched in 1994 by Marc Andreessen.
- Internet Explorer: Released in 1995 by Microsoft.
- Mozilla Firefox: Introduced in 2002.
- Safari: Launched by Apple in 2003.
- Chrome: Released by Google in 2008, one of the most widely used web browsers globally.
Basic Parts of Web Browsers
- Address Bar: Displays the URL or web address.
- Title Bar: Shows the title of the currently displayed web page.
- Menu Bar: Provides access to various menus for quick file access.
- Status Bar: Located at the bottom of the browser window, it displays information about the current activity, such as loading speed or the URL of the element the mouse hovers over.
- Display Window: The area where the web page content is displayed.
- Scroll Bars: Located on the right side of the display window, they allow navigation of the web page content when it exceeds the display window size.
Customization and Extensions
- Chrome Extensions: Small programs installed into Google Chrome that can be used to modify the browser's functionality, adding new features or changing existing behavior.
- Examples include:
- Ad-blocking
- To-do list and note-taking
- Password management
- Privacy and security enhancements
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Description
Test your knowledge on web browsers, including their definitions, applications, and core components. Learn about how web browsers interact with web resources and the standards set by the W3C for web content. This quiz covers essential concepts needed for anyone interested in web technology.
