Question: Which of the following are responsible for consensus in Hyperledger?

Consensus helps us to determine whether to commit it or not, and it is the responsibility of Orderer Service Node to establish this Consensus.

What is consensus in Hyperledger fabric?

The consensus in Hyperledger Fabric network is a process where the nodes in the network provide a guaranteed ordering of the transaction and validating those block of transactions that need to be committed to the ledger.

What is the role of orderer in Hyperledger fabric?

The Orderer is responsible for packaging transactions into Blocks, and distribute them to Anchor Peers across the network. The transaction flow of Fabric have the steps Proposal, Packaging and Validation.

Which of the following describe the role of consensus mechanisms in a blockchain?

A consensus mechanism is a fault-tolerant mechanism that is used in computer and blockchain systems to achieve the necessary agreement on a single data value or a single state of the network among distributed processes or multi-agent systems, such as with cryptocurrencies.

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How do you change the consensus in Hyperledger fabric?

For changing the Consensus mechanism in the hyperledger fabric, go to the configtx file of the hyperledger fabric and choose any of the two available consensus mechanisms such as KAFKA or SOLO.

Which consensus mechanism is used in Hyperledger Indy?

Consensus in Hyperledger Indy is based on Redundant Byzantine Fault Tolerance (RBFT), which is a protocol inspired by Plenum Byzantine Fault Tolerance (Plenum).

What is Kafka consensus?

Consensus in blockchain involves nodes agreeing on the same order of transactions. Ordering nodes send to Kafka transactions, and receive from Kafka transactions in the same order, since Kafka presents an abstraction of a shared queue. All orderers create blocks when they read enough messages or enough data from kafka.

Which consensus mechanism does the ordering service use in Hyperledger fabric?

Hyperledger Fabric uses Crash Fault Tolerance(CFT) to achieve consensus for single as well as multiple org systems.

What are the main services offered by Hyperledger fabric?

Hyperledger Fabric delivers the following blockchain network functionalities:

  • Identity management. …
  • Privacy and confidentiality. …
  • Efficient processing. …
  • Chaincode functionality. …
  • Modular design.

What is the role of an orderer inside a Hyperledger fabric network Mcq?

Accepted Answers:

Orderer creates the block of transactions. Peer commits the block of transactions.

Which among the following are consensus algorithms?

Other common consensus algorithms include the practical Byzantine fault tolerance algorithm (PBFT), the proof-of-stake algorithm (PoS) and the delegated proof-of-stake algorithm (DPoS).

What is consensus mechanism explain the three types of consensus algorithms?

Most blockchain projects use one of the three currently most common consensus algorithms: Proof of Work (PoW), Proof of Stake (PoS) or Delegated Proof of Stake (DPoS). All these mechanisms aim at ensuring that all participants dispose of identical copies of the distributed database files.

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What is consensus by Coindesk?

Since 2015, Consensus has been recognized as the most influential event in cryptocurrency and blockchain. Consensus will bring together thousands of attendees to hear from the most sought-after thought leaders and experience a wide range of keynotes, exclusive panels, workshops, and networking opportunities.

What is the consensus algorithm currently used for Hyperledger Iroha?

Hyperledger Iroha currently implements a consensus algorithm called YAC (Yet Another Consensus), which is based on voting for block hash. Consensus involves taking blocks after they have been validated, collaborating with other blocks to decide on commit, and propagating commits between peers.

What is the consensus algorithm used by ethereum?

The most used consensus algorithms in Ethereum are Proof of Work (PoW) and Proof of Stake (PoS). PoW was the first consensus algorithm used in Ethereum that was used in cryptocurrencies. PoS is another type of consensus algorithm developed as an alternative to PoW.

Which of the following components are modular in Hyperledger fabric?

The modular architecture of Hyperledger Fabric separates the transaction processing workflow into three different stages: smart contracts called chaincode that comprise the distributed logic processing and agreement of the system, transaction ordering, and transaction validation and commitment.