Blockchain and the blockchain - Lesson 3&4

Which of the following is the primary reason for the high computing power required by public blockchains?

• The more people participating and making transactions, the more computing power is required.

• Public blockchains are designed to be highly complex and energy-intensive.

• Public blockchains need to maintain fast transaction speeds and achieve consensus.

• The decentralized nature of public blockchains necessitates high computing power.

Private blockchains are much smaller than public blockchains. What is the primary implication of this size difference?

• Private blockchains require more energy to run than public blockchains.

• Private blockchains are less secure than public blockchains.

• Private blockchains are more difficult to maintain than public blockchains.

• Private blockchains require much less energy to run than public blockchains.

Which of the following is a key advantage of private blockchains over public blockchains?

• Private blockchains are more accessible to people.

• Private blockchains give users more power.

• Private blockchains allow only approved creators access to the blockchain.

• Private blockchains are more decentralized than public blockchains.

The passage states that in a private blockchain, "every person on the network is known." What is the primary implication of this characteristic?

• Private blockchains are less secure than public blockchains.

• It is easier to identify anyone trying to cheat the system in a private blockchain.

• Private blockchains are more accessible to people than public blockchains.

• Private blockchains require more computing power to run than public blockchains.

What is the primary purpose of the Sovrin blockchain, which is a private blockchain?

• To create the world's first digital identity network

• To track a company's spending throughout the year

• To give employees access to financial data

• To be announced by Facebook and other large corporations

In a private blockchain, only approved creators are free to use the blockchain however they please. What is the main implication of this characteristic?

• Private blockchains are more secure than public blockchains.

• Private blockchains are less accessible to people than public blockchains.

• Private blockchains allow for more control and influence over the network.

• Private blockchains require less computing power to run than public blockchains.

Which of the following best summarizes the key difference between public and private blockchains?

• Public blockchains are decentralized, while private blockchains are controlled by a single entity.

• Public blockchains are faster and more efficient than private blockchains.

• Public blockchains are more secure than private blockchains.

• Public blockchains are more accessible to people, while private blockchains require approval or invitation to join.