67. Blockchain Technology
According to the essay, what is the primary reason blockchain data is difficult to change once recorded?
- It is monitored by a central authority like a bank.
- The information blocks are linked together in a chain.
- It requires very little computer power to maintain.
- Only a single computer is responsible for the data.
The essay states that blockchain is "decentralized." What does this mean?
- The system is controlled by one powerful company.
- Information is verified by a single, central computer.
- Many computers around the world work together to verify information.
- The data is stored in a secret, hidden location.
Which of the following is NOT mentioned in the essay as a potential use for blockchain?
- Tracking products in a supply chain.
- Storing and sharing patient healthcare records.
- Creating social media profiles for celebrities.
- Making government voting more transparent.
What is one of the main challenges or drawbacks of blockchain technology discussed in the essay?
- It is too easy for someone to cheat the system.
- It requires a trusted middleman to operate.
- It uses a large amount of computer power and energy.
- The data is not secure and can be easily hacked.
Based on the conclusion, how does the essay describe the fundamental purpose of blockchain?
- It is a tool for making financial trades very quickly.
- It is a digital tool that builds trust among people who don't know each other.
- It is a method for governments to control information.
- It is a way to reduce the cost of manufacturing products.