{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do blockchain protocols select node connections and prevent malicious nodes?","a":"Blockchain protocols primarily rely on the collaborative action of the network layer and consensus layer in selecting node connections and prohibiting malicious nodes. At the network layer, nodes connect to neighbor nodes through network communication protocols, and data reception and transmission modules are responsible for completing data exchange with other nodes, including transaction broadcasting, message consensus, and data synchronization. At the consensus layer, blockchain adopts specific algorithms to reach consensus, such as proof of work (PoW) or proof of stake (PoS), thus ensuring the security and consistency of the blockchain network.\n\nTo select node connections, blockchain protocols usually prioritize nodes with higher credibility and good behavior. These nodes are often more reliable and secure, and they can help maintain the stability and integrity of the blockchain network. By promoting the connection of high-quality nodes, the blockchain can effectively prevent malicious nodes from causing harm and contribute to the overall health and development of the blockchain ecosystem."}]}],"pr":"d9ca75e10437727db022e3685ae00e05db198f86b5b3eaf8e91f0091f2edd14c"}