When building a test network, how many nodes are adequate for an Ordering Service?
AThere is no set number of nodes required for an Ordering Service.
BThree ordering nodes are needed for a test Ordering Service.
COne ordering nodes is sufficient for an Ordering Service.
DOrdering Service nodes are optional in a test network.
Regarding peer lifecycle chaincode, which of the following is the incorrect (unsupported) subcommand for query?
Apeer lifecycle chaincode querypackaged
Bpeer lifecycle chaincode querycommitted
Cpeer lifecycle chaincode queryapproved
Dpeer lifecycle chaincode queryinstalled
When deploying an Orderer environment, variables must be customized or overridden in which artifact?
Acrypto-config.yaml
Bdocker-compose.yaml
Cconfigtx.yaml
Dorderer.yaml
Which subcommand adds a peer to a channel in Hyperledger Fabric?
Apeer channel fetch
Bpeer channel create
Cpeer channel update
Dpeer channel join
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Smart Contracts
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Question 7
Smart Contracts
Question 8
Hyperledger Fabric Networks
Question 9
Hyperledger Fabric Networks
Question 10
Hyperledger Fabric Networks
Question 11
Client Applications
Question 12
Hyperledger Fabric Networks
Question 13
Client Applications
Question 14
Hyperledger Fabric Networks
Question 15
Hyperledger Fabric Networks
Question 16
Hyperledger Fabric Networks
Question 17
Hyperledger Fabric Networks
Question 18
Client Applications
Question 19
Hyperledger Fabric Networks
Question 20
Hyperledger Fabric Networks
Question 21
Smart Contracts
Question 22
Client Applications
Question 23
Hyperledger Fabric Networks
Question 24
Hyperledger Fabric Networks
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After the transaction that contains the delState("A") function is committed, what happens to the ledger and state database?
Agetstate("A") function returns the current state of the key "A".
BThe deleting transaction sets an empty value to the key "A" in the write set.
CThe state of the key "A" is removed from the state database, but its history remains in the ledger.
DAll transaction histories which updated the state "A" are deleted from the ledger.
How would a developer iteratively test and develop a smart contract without the overhead of the smart contract lifecycle process for every update?
ARunning chaincode for Smart Contracts in development mode.
BManually update the Smart Contract code on the network.
CDeploy the Smart Contract on the network for every update.
DUse a Production Network to test and develop Smart Contracts.
Which of the following information do signature policies provide when creating a network in Hyperledger Fabric?
AIdentify specific users who must sign in order to satisfy a policy.
BNumber of nodes in the network.
CPrivate keys of all network participants.
DType of consensus algorithm used
What is true about the historic states in Hyperledger Fabric model?
AThey can be modified by anyone with write access.
BAdministrator role is required for access.
CThey are immutable.
DThey cannot be accessed by anyone.
In Hyperledger Fabric, Intercommunication is how a smart contract in a channel updates the World State database. It is achieved by what process?
ASetting the endorsement policy to communicate with all peers.
BConfiguring the Peer-to-peer endorsement options.
CCalling smart contracts within the channel and in different channels.
DMaking use of the cross channel Consensus mechanism.
What types of events committed to the ledger can client applications receive using the peer's event service?
AOnly block events
BBoth chaincode and block events
CNeither chaincode nor block events
DOnly chaincode events
Which of the following is the correct role of orderer nodes?
AOrder and package endorsed transactions into a block.
BOrder new tokens from the token issuer.
COrder peers to endorse a transaction.
DReorder stored blocks to compress data volume.
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?
AUNAVAILABLE
BABORTED
CDEADLINE_EXCEEDED
DFAILED PRECONDITION
In a production environment, what peer items require on-going monitoring?
AOnly the orderer service since it manages the ordering of transactions.
BOnly the chaincode containers since they handle the business logic.
CAll peer containers, including their CPU, network, and memory.
DOnly the peer nodes that are running chaincode, since they consume most resources.
What do we call the ordering nodes actively participating in the consensus mechanism for a given channel and receiving replicated logs for the channel?
ACommitter set
BConsenter set
CPeers
DEndorsers
Which of the following is the identity solution in Hyperledger Fabric?
AHyperledger Fabric Orderer
BHyperledger Fabric CA
CHyperledger Fabric SDK
DMembership Service Providers
What is necessary for a chaincode to become ready to commit on a channel?
AThe chaincode must be previously installed on the channel’s peers.
BThe policy Channel/Application/Writers must be satisfied.
CThe policy /Channel/Application/LifecycleEndorsement must be satisfied.
DThe chaincode must have the endorsement policies correctly defined.
How can the client application access descriptive error text for each of the endorsing peers following a transaction endorsement failure?
AExtract relevant entries from the endorsing peer logs.
BExamine the message of the associated cause or wrapped error.
CLook up the gRPC status code for the error.
DExtract the details associated with the returned error.
How should private data collection be configured and deployed?
APrivate data collection is configured and deployed with the help of a dedicated REST API that is available on the orderers.
BPrivate data collection configuration is setup at the core network structure configuration with the components.
CPrivate data collection is configured at the X5C9 certification generation process of the certificate authorities.
DPrivate data collection configuration is described in a separate json file and deployed at chaincode deployment.
In Hyperledger Fabric, what is used if end users of the application want to keep their private key secret?
AOffline signing
BOnline signing
CNo signing is required
DShared signing
Which of the following statements describes Chaincode correctly?
AChaincode is software for creating new blocks on the ledger.
BChaincode is software defining assets and transaction instructions for modifying the assets on the ledger.
CChaincode is a legally enforceable business contract between organizations.
DChaincode is a code of conduct to manage a blockchain consortium.
When submitting a transaction, how can a client application send information to be stored only in a private data collection?
ATransfer it using an off-chain data store.
BEncrypt it using the client private key.
CSend it as a chaincode event.
DInclude it as transient data.
Which concept of the RAFT ordering service relates to the ingestion of new log entries; their replication to other ordering nodes; and managing when an entry is considered committed?
AConsenter set
BEndorsement
CQuorum
DLeader
Which pluggable component in the Hyperledger Fabric modular architecture is responsible for identities?
