What is the best description of how Kafka is utilized for consensus approach in Hyperledger Fabric?
Answer(s): D
Kafka essentially is a distributed, horizontally-scalable, fault-tolerant, commit log. The other answers are in correct.
What is provided by the Hyperledger Fabric to facilitate network communications?
Answer(s): A
Hyperledger Fabric provides a Node.js and a Java SDK to facilitate network communications functionality.
Voting-based algorithms are advantageous in that they provide a benefit but a tradeoff. (Select two.)
Answer(s): C,D
Hyperledger makes use of the permissioned voting-based consensus from the pool of other consensus named the lottery-based consensus. (Kafka in Hyperledger Fabric Ordering Service) Voting-based algorithms are advantageous in that they provide low-latency finality. More Nodes = More Time to reach Consensus. Trade off between Scalability and Performance
Hyperledger Fabric is a blockchain implementation that is designed for deploying a modular and extensible architecture.Which of the following is NOT true about the architecture of Hyperledger?
Answer(s): C
It has a modular subsystem design so that different implementations can be plugged in and implemented over time. Modular and extensible means modularity in all components of all frameworks, including: Consensus layer Smart contract layer Communication Layer Data Store Identity services (root of trust, to identify the participants).
Hyperledger Fabric Ledger has two parts. What are they?
Answer(s): B
ExplanationRepresentation of current state of the assets. Asset state data can be changed upon changes to the state of the data. · Transaction Logs: Record of all the transactions (in the order they are received) which modified the state data, and once the data is written it is immutable and cannot be changed.
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