多选题区块链不是什么,多选题区块链不是数据库吗

1. What is not the core technology of the blockchain is

What is not the core technology of the blockchain is the network protocol. The core technologies of blockchain include: Distributed ledger means that transaction accounting is completed by multiple nodes distributed in different places. Each node records a complete account and can participate in supervising the legality of the transaction. At the same time, it can also jointly Testify for it.

2. Which of the technologies used by blockchain does not include?

The technologies used by blockchain do not include big data

Blockchain technology Including distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other technical applications. It was developed based on needs after market research by experts, sports experts and the operation team.

2 Public blockchain The public blockchain is the earliest blockchain and the most widely used blockchain at present.

3 The alliance chain designates multiple pre-selected nodes within a certain group as bookkeepers, and the generation of each block is jointly decided by all pre-selected nodes. Other access nodes can participate in transactions, but are not involved in the accounting process (it is essentially still managed accounting, but becomes distributed accounting. How many nodes are pre-selected, and how to determine the bookkeeper of each block to become the blockchain Main risk point), anyone else can make limited queries through the API opened by the blockchain.

3. The characteristics that are not part of the blockchain are

high efficiency

4. Which of the following options is not part of the blockchain? Features

Centralization

Decentralized, Trustless, Collectivelymaintained, ReliableDatabase.

5. Which of the technologies used by blockchain does not include?

The technologies used by blockchain do not include big data

1. P2P network technology

In fact, before the emergence of blockchain, distributed P2P peer-to-peer network was already a very mature technology.

2. Encryption technology

In terms of encryption technology, blockchain uses an asymmetric encryption algorithm.

3. Smart Contract

The term "smart contract" was first proposed by legal scholar Nick Szabo in 1995.

4. Consensus Mechanism

In the past, we paid an extremely expensive price for trust, and blockchain will incredibly change this situation.

Blockchain is revolutionizing various ways to pay for e-commerce:

1. Faster payment processing

2. Easily process receipts and warranty vouchers< /p>

3. Self-executing smart contracts

4. Reduce handling fees

5. Prevent network attacks