The main difference between a public block chain and a private block chain is that a private block chain doesn’t need extra verification to get access of.
举一反三
- It is a good way to record personal health information in a public block chain in order to share our health data with different doctors.
- 区块链的结构包括以下（）？ A: 交易 B: 区块(Block) C: 链(Chain) D: 钱包
- 区块链的基本原理包括（ ）。 A: 区块（Block） B: 技术(Technology) C: 链(Chain) D: 交易(Transaction)
- Before a block can be added to the chain, which job of the following is not necessary? ( ) A: A cryptographic puzzle must be solved thus creating the block. B: The computer that solves the puzzle shares the solution to all of the other computers on the network. C: The financial institution will verify this proof of work, if correct, the block will be added to the chain. D: The network will then verify this proof-of-work and, if correct, the block will be added to the chain.
- A supply chain needs to achieve a balance between the level of availability and the cost of inventory that A: maximizes supply chain revenues. B: minimizes supply chain costs. C: maximizes supply chain profitability. D: maximizes supply chain availability. E: all of the above