EMT Practice Test

1. Question Content...

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Question1: Which ordering does Pluggable Consensus support for Hyperledger Fabric?

Question2: Where would you generate a unique ID to represent an asset on the ledger?

Question3: When executing queries on the ledger, what is the difference between simple and composite keys?

Question4: Which subcommand adds a peer to a channel in Hyperledger Fabric?

Question5: Which pluggable component in the Hyperledger Fabric modular architecture is responsible for identities?

Question6: What is a range query with a start and end key?

Question7: Which arguments must be supplied when a client application uses the Fabric Gateway client API to create a Gateway connection to a Fabric network?

Question8: What is the advantage of using state-based endorsement policy over a chaincode or collection level endorsement policy?

Question9: When reading and modifying the ledger state in Hyperledger Fabric, what type of schema does the data stored in the ledger need to adhere if the state database is LevelDB?

Question10: After the transaction that contains the delState("A") function is committed, what happens to the ledger and state database?

Question11: What allows users to update channels, or invoke new Smart Contracts?

Question12: Which of the following is the correct role of orderer nodes?

Question13: When building a test network, how many nodes are adequate for an Ordering Service?

Question14: What is the purpose of the ordering service in Hyperledger Fabric model?

Question15: What should be taken into account at implementing efficient CouchDB queries from chaincode?

Question16: In Hyperledger Fabric, CouchDB is enabled as the state database by changing the state Database configuration option from goleveldb to what?

Question17: What gRPC status code might you expect to be associated with an error invoking a transaction as a result of a transient failure, such as a network disconnection between the client application and Gateway peer?

Question18: What do we call the ordering nodes actively participating in the consensus mechanism for a given channel and receiving replicated logs for the channel?

Question19: In Hyperledger Fabric, what is used if end users of the application want to keep their private key secret?
In Hyperledger Fabric, what is used if end users of the application want to keep their private key secret?

Question20: What types of events committed to the ledger can client applications receive using the peer's event service?

Question21: Which of the following statements describes Chaincode correctly?

Question22: The Gateway service manages which of the following activities on behalf of the client application?

Question23: In Raft, there are two places for configuration. One is local configuration. What is the other?

Question24: When creating a gRPC connection to the Gateway peer using Transport Layer Security (TLS), what information must be supplied by the client application?

Question25: What is the role of the endorsement policy in the context of Hyperledger Fabric's chaincode?