Uses/Benefit Of World Wide Web - SS3 ICT Past Questions and Answers - page 2

A content management system (CMS) is a software application that simplifies the creation, management, and publication of digital content on websites. It provides an intuitive interface for users to add, edit, and organize text, images, videos, and other elements on webpages without needing extensive technical knowledge. CMSs like WordPress and Drupal separate content from design, making it easier to update and maintain websites. They often include features for user management, templates, and plugins, enabling customization and scalability for various web projects.

Fiber optic cables differ from Ethernet cables primarily in the way they transmit data. Ethernet cables use electrical signals to carry data, while fiber optic cables use pulses of light. This light-based transmission allows fiber optic cables to transmit data at much higher speeds over longer distances with less signal degradation. Additionally, fiber optic cables are immune to electromagnetic interference, making them ideal for critical applications like high-speed internet and long-distance data transmission, whereas Ethernet cables are more commonly used for shorter-range connections within buildings.

A typical web development software stack consists of several components:

Front-end: This includes HTML for structuring content, CSS for styling, and JavaScript for interactivity.

Back-end: This involves server-side technologies like programming languages (e.g., PHP, Python, Ruby) and databases (e.g., MySQL, PostgreSQL).

Web server: Software like Apache, Nginx, or Microsoft IIS that handles requests from clients and serves web content.

Development tools: Integrated development environments (IDEs) or text editors (e.g., Visual Studio Code, Sublime Text) for writing and testing code.

Version control: Tools like Git for managing code changes and collaborating with other developers.

JavaScript is a crucial programming language for web development, primarily responsible for enhancing user interactivity on websites. It enables features like form validation, animations, dynamic content loading, and responsive user interfaces. By executing code directly in a user's browser, JavaScript allows websites to respond to user actions in real-time, creating a more engaging and interactive user experience. It is a key component of modern web applications and is often used alongside HTML and CSS to create dynamic, client-side functionality.

A web browser's navigation system enables users to move between webpages by interacting with elements like links, buttons, and the browser's interface. When a user clicks on a hyperlink or enters a URL, the browser sends a request to the web server hosting the desired webpage. The server responds with the requested webpage's data, which the browser then renders on the screen. Users can navigate forward and backward through their browsing history using browser-provided buttons. Additionally, browsers often have features like bookmarks and tabs to help users organize and access web content efficiently.

Common types of network connectors include:

• RJ-45: Used with Ethernet cables for wired network connections.
• SC and LC: Used with fiber optic cables for high-speed, long-distance data transmission.
• USB: Primarily used for connecting various peripherals and devices to computers.
• HDMI: Commonly used for connecting audio and video devices like TVs and monitors.
• Coaxial: Used for cable television and broadband internet connections.
• BNC: Often used in video and RF applications.
• VGA and DVI: Older connectors used for video display connections on computers.

Each of these connectors serves a specific purpose in connecting devices within a network or between devices and displays.