Blockchain administrators (operators) are most concerned with which areas ofa blockchain? Select all that apply. Applications Security Consensus Smart contracts Peers The membership component includes which of the following types of certificates? Select all that apply Applications Smart contracts Enrollment O Transactions Which of these are benefits of using Hyperledger Composer? Select all that apply. Reduces risk O Increases understanding O Helps you monetize APls Saves time O Increases flexibility What are some ways to arrive at consensus? Select all that apply. Solo O Proof of elapsed time O Key/value pairs O Stored procedures Proof of work