Sol. Ans.(d). Web 3.0 represents the next iteration or phase of the evolution of the web/internet and may prove as disruptive as Web 2.0 was. Web 3.0 is built upon the core concepts of decentralization, openness, and greater user utility.
Decentralization: “No permission is needed from a central authority to post anything on the web, there is no central controlling node, and so no single point of failure...and no ‘kill switch’! This also implies freedom from indiscriminate censorship and surveillance.” This is a core tenet of Web 3.0. In Web 2.0, computers use HTTP in the form of unique web addresses to find information, which is stored at a fixed location, generally on a single server. With Web 3.0, because information would be found based on its content, it could be stored in multiple locations simultaneously and hence be decentralized. This would break down the massive databases currently held by internet giants like Meta and Google and would hand greater control to users. Hence 3 is true.
Bottom-up design: “Instead of code being written and controlled by a small group of experts, it was developed in full view of everyone, encouraging maximum participation and experimentation.”
With Web 3.0, the data generated by disparate and increasingly powerful computing resources, including mobile phones, desktops, appliances, vehicles, and sensors, will be sold by users through decentralized data networks, ensuring that users retain ownership control. Hence 1 is true.
Trustless and permissionless: In addition to decentralization and being based upon open-source software, Web 3.0 will also be trustless (i.e., the network will allow participants to interact directly without going through a trusted intermediary) and permissionless (meaning that anyone can participate without authorization from a governing body).
As a result, Web 3.0 applications will run on blockchains or decentralized peer-to-peer networks, or a combination thereof—such decentralized apps are referred to as dApps.
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Source : https://www.investopedia.com/web-20-web-30-5208698