Hyperledger Fabric Architecture and Network Creation BDC Practice Questions (Page 9)

Questions 41–45

1. 41expert · easy

   A developer is setting up a Fabric network for development. They want to use a script to generate the cryptographic material for the organizations. Which tool is commonly used for this purpose?

   • Acryptogen
   • Bpeer
   • Cdocker-compose
   • Dconfigtxgen
   Reveal Solution Discussion Select an answer first
2. 42foundation · easy

   What is the purpose of a channel in Hyperledger Fabric?

   • ATo provide a communication path between the ordering service and peers
   • BTo execute chaincode for the entire network
   • CTo store the cryptographic identities of all participants
   • DTo isolate data and provide privacy between specific network participants
   Reveal Solution Discussion Select an answer first
4. 43expert · hard

   A Fabric network uses a Raft ordering service with five ordering nodes. One ordering node becomes unavailable. The remaining four nodes continue to operate. What is the impact on the network's ability to order transactions?

   • AThe network can continue to order transactions because Raft tolerates the failure of a minority of nodes.
   • BThe network stops ordering transactions because all ordering nodes must be available.
   • CThe network continues to order transactions but with reduced throughput because only four nodes are available.
   • DThe network continues to order transactions but only if the remaining nodes are from different organizations.
   Reveal Solution Discussion Select an answer first
5. 44foundation · easy

   Which configuration file is used to define the organizations, peers, and ordering service in a Hyperledger Fabric network?

   • Acore.yaml
   • Bconfigtx.yaml
   • Ccrypto-config.yaml
   • Ddocker-compose.yaml
   Reveal Solution Discussion Select an answer first
6. 45expert · hard

   A developer is using Docker Compose to bootstrap a Fabric network for development. The network uses a single peer and a single orderer. The developer wants to make the network easy to tear down and restart without losing the ledger data. What is the best approach?

   • AUse docker-compose down and then docker-compose up, but do not use volumes.
   • BUse Docker volumes to persist the peer's ledger and the orderer's data, and use docker-compose down and up to restart.
   • CUse docker-compose stop and docker-compose start to restart the network.
   • DUse docker-compose down -v and then docker-compose up to restart the network.
   Reveal Solution Discussion Select an answer first