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Questions and Answers of Web Essentials

Ans: The Internet is a global network of interconnected computers and computer networks that communicate with each other using the Internet Protocol (IP).

Ans: Distributed architecture refers to the internet’s design where multiple interconnected servers, routers, and other networking devices work together to facilitate data transfer and communication, with no central governing authority or single point of control.

Ans: Computers on the internet use Internet Protocol (IP) to communicate with each other.

Ans: The internet is built on Distributed architecture.

Ans: Instant communication globally through email, instant messaging, and video calls.

Ans: The major security concern associated with the internet are:-

  • Malware
  • phishing
  • hacking
  • identity theft

Ans: IP stands for Internet Protocol, which is a set of rules for routing and addressing packets of data so they can travel across networks and reach the correct destination.

Ans: DNS stands for Domain Name System, which translates human-readable domain names into IP addresses.

Ans: TLD stands for Top-Level Domain, the last part of a domain name, appearing after the final dot (e.g., .com, .org).

Ans: A subdomain is a part of a domain name that precedes the Second-Level Domain, used to organize different sections of a website (e.g., blog.bimstudies.com).

Ans: UDP is a connectionless protocol that allows for quick, low-latency data transmission without guaranteeing delivery.

Ans: The primary function of TCP is to ensure reliable data transmission between devices over a network.

Ans: .com is an example of a generic Top-Level Domain (gTLD).

Ans: HTTP stands for Hypertext Transfer Protocol, an application layer protocol for transmitting hypertext over the internet.

Ans: HTTPS stands for Hypertext Transfer Protocol Secure, a secure version of HTTP that encrypts data during transmission.

Ans: URL stands for Uniform Resource Locator, a web address used to identify and locate resources on the internet.

Ans: HTTPS encrypts data during transmission, providing confidentiality, authentication, and data integrity.

Ans: Hyperlinks are clickable elements in web pages that allow users to navigate between different documents on the World Wide Web.

Ans: A URL consists of a protocol, domain or IP address, optional port number, path to the resource, query parameters, and fragment identifier.

Ans: HTTP is stateless because each request made by the client is independent, and the server does not retain session information between requests.

Ans: HTTPS encrypts data during transmission using SSL/TLS, providing secure communication, whereas HTTP does not.

Ans: Client/Server architecture is a computing model that divides system responsibilities into client and server components for networked systems.

Ans: The client is responsible for user interface presentation, generating requests, and processing/displaying data received from the server.

Ans: The server provides services, processes client requests, manages resources, and handles data processing.

Ans: The primary communication model is the request-response model, where clients send requests to servers, and servers respond with the requested information or services.

Ans: The tiers include 1-Tier, 2-Tier, and 3-Tier architectures, categorized based on the number of layers or components involved in the system.

Ans: The middle tier, also known as the application server or middleware, is responsible for application logic, business rules enforcement, and facilitating communication between the client and server.

Ans: 3-Tier Architecture offers improved scalability, flexibility, and modularity by separating concerns and reducing the impact of changes across tiers.

Ans: The client initiates requests and handles user interactions, while the server processes requests, manages resources, and provides services.

Ans: A web page is a single document or resource on the World Wide Web identified by a unique URL.

Ans: A website is a collection of related web pages and multimedia content identified by a common domain name and published on at least one web server.

Ans: CSS stands for Cascading Style Sheets. It is used for styling and formatting web pages, controlling layout, colors, and fonts.

Ans: JavaScript adds interactivity and dynamic behavior to web pages, enabling features like form validation, animations, and responsive user interfaces.

Ans: A domain name is a unique and human-readable web address that identifies a website, such as “www.bimstudies.com”.

Ans: Static websites consist of fixed, unchanging content, while dynamic websites generate content on-the-fly based on user interactions and real-time data.

Ans: Responsive design ensures that websites adapt to different screen sizes and devices, providing a consistent and user-friendly experience across desktops, tablets, and smartphones.

Ans: Hyperlinks allow users to navigate between different web pages or resources, facilitating exploration and access to additional content.

Ans: Web 1.0 refers to the early phase of the World Wide Web characterized by static content, limited interactivity, and one-way communication.

Ans: Web 2.0 represents the era of dynamic, interactive websites with user-generated content, collaboration, and two-way communication.

Ans: Examples include social media platforms like Facebook and Twitter, blogging platforms like WordPress, and collaborative platforms like Wikipedia.

Ans: Blockchain technology, used in decentralized platforms like Ethereum, is associated with Web 3.0.

Ans: Web 2.0 introduced dynamic, interactive websites with user-generated content and collaboration, transforming the web from a static information source to a platform for user participation and engagement.

Ans: The internet has democratized education by providing access to online courses, tutorials, and educational resources, allowing students to learn at their own pace and facilitating lifelong learning and skill development.

Ans: The digital divide refers to the gap between those who have access to the internet and technology and those who do not, leading to disparities in education, economic opportunities, and information access.

Ans: The internet has transformed the global economy by enabling e-commerce, online banking, digital marketing, and remote work, allowing businesses to reach broader audiences, reduce transaction costs, and create new entrepreneurial opportunities.

Ans: TCP is considered reliable because it establishes a connection using a three-way handshake, ensures data is delivered accurately and in the correct order, manages flow control, and includes error-checking mechanisms.

Ans: UDP is suitable for real-time applications because it is connectionless, has low overhead, and allows for quick data transmission, making it ideal for applications that can tolerate some data loss but require fast delivery.

Ans: The main difference is the address space: IPv4 uses 32-bit addresses allowing for approximately 4.3 billion unique addresses, while IPv6 uses 128-bit addresses, significantly increasing the number of possible addresses.


difference between http and https

Ans: Modularity promotes system flexibility, scalability, and maintainability by dividing system responsibilities into independent components or layers. It allows changes to one module without affecting others, facilitates code reuse, promotes separation of concerns, and simplifies system maintenance and updates. By encapsulating functionality within modular units, developers can design more robust, adaptable, and extensible Client/Server systems.

Ans: Responsive design ensures that websites are accessible across a wide range of devices and screen sizes, including smartphones, tablets, and desktops. This accessibility improves usability and ensures a positive experience for all users.

Ans: A modern, responsive website combines HTML, CSS, JavaScript, server-side scripting, and databases to deliver interactive, personalized content. HTML structures content, CSS styles layout and appearance, and JavaScript adds interactivity. Server-side scripting generates dynamic content, while databases store and retrieve data. Responsive design ensures compatibility across devices, enhancing accessibility and user experience.

Ans: AI integration in Web 3.0 can lead to more personalized and intelligent web experiences, with advanced services like intelligent assistants, personalized recommendations, and enhanced user interactions.

Ans: Web 3.0 builds upon the user interaction and content generation of Web 2.0 by incorporating semantic web technologies, AI-driven services, and decentralized platforms, leading to more personalized, intelligent, and immersive experiences.

Ans: The semantic web focuses on making data more interconnected and semantically meaningful, enabling machines to understand information better and provide more relevant and personalized services to users.

Ans: The Domain Name System (DNS) works by translating human-readable domain names into IP addresses, which computers use to identify each other on the network. When a user enters a domain name into a web browser, the DNS resolver sends a query to a DNS server to find the corresponding IP address. This process involves several steps, including checking the local cache, querying root servers, and contacting authoritative servers for the specific domain.

• DNS is essential because it simplifies internet navigation, making it possible for users to access websites using easy-to-remember names instead of complex numeric addresses. It also supports the hierarchical organization of the internet’s naming structure, ensuring efficient and reliable name resolution.

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