Blockchain and Distributed Ledger Technologies

Which of the following statements regarding the features of blockchain technology are correct? 1. Records stored in the database may be made visible to relevant stakeholders without risk of alteration. 2. Copies of the entire database are stored on multiple computers on a network, syncing within seconds. 3. Consortium blockchain is a blend of public and private blockchains allowing selective data access. 4. Mathematical algorithms make it impossible to change or delete any data once recorded and accepted. Select the answer using the code given below:

With reference to Web 3. 0, consider the following statements: 1. Web 3. 0 technology enables people to control their own data. 2. In Web 3. 0 world, there can be blockchain based social networks. 3. Web 3. 0 is operated by users collectively rather than a corporation. Which of the statements given above are correct?

With reference to Non-Fungible Tokens (NFTs), consider the following statements: 1. They enable the digital representation of physical assets. 2. They are unique cryptographic tokens that exist on a blockchain. 3. They can be traded or exchanged at equivalency and therefore can be used as medium of commercial transactions. Which of the statements given above are correct?

With reference to "Blockchain Technology", consider the following statements: 1. It is a public ledger that everyone can inspect, but which no single user controls. 2. The structure and design of blockchain is such that all the data in it are about cryptocurrency only. 3. Applications that depend on basic features of blockchain can be developed without anybody's permission. Which of the statements given above is/are correct?

Consider the following pairs: Terms sometimes seen in news : Context/Topic 1. Belle II experiment : Artificial Intelligence 2. Blockchain technology : Digital/Cryptocurrency 3. CRISPR – Cas9 : Particle Physics Which of the pairs given above is/are correctly matched?