Free Practice Questions for Linux Foundation HFCP Exam

A smart contract can call other smart contracts both within the same channel and across different channels. Which of the following transactions is inter-contract communication whose functionality is limited?

• Chaincode X calls Getstate in Chaincode Y on the same channel.
• Chaincode X calls Putstate in Chaincode Y on the same channel.
• Chaincode X calls Getstate in Chaincode Y on a different channel.
• Chaincode X calls Putstate in Chaincode Y on a different channel.

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

• A query that searches for all keys that are in the range defined by the start and end keys.
• A query that searches for a specific value in a composite key and all values after it.
• A query that searches for ledger entries that have values matching the range.
• A query that searches for all the key field in the value.

In Hyperledger Fabric, Intercommunication is how a smart contract in a channel updates the World State database. It is achieved by what process?

• Setting the endorsement policy to communicate with all peers.
• Configuring the Peer-to-peer endorsement options.
• Calling smart contracts within the channel and in different channels.
• Making use of the cross channel Consensus mechanism.

Which actions are combined into a single function by the Fabric Gateway client APIs to support transaction submission with a single line of code?

• Validation and Commitment
• Endorsement, Submit, and Commitment
• Ordering and Commitment
• Endorsement and Commitment

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

• CouchDB
• Private data collections
• The peer CLI
• Endorsement policies

What is the only way to recover from a failed migration from Kafka to Raft?

• Retry the migration from Kafka to Raft.
• Restore the state from a backup.
• Revert to the previous version of Kafka.
• Rebuild the network from scratch.

Each peer in the Hyperledger Fabric network hosts a copy of the ledger, which also belongs to what component?

• The membership services
• The Ordering node
• The NoSQL databases
• A member channel

What is true about the historic states in Hyperledger Fabric model?

• They can be modified by anyone with write access.
• Administrator role is required for access.
• They are immutable.
• They cannot be accessed by anyone.

Which of the following is the identity solution in Hyperledger Fabric?

• Hyperledger Fabric Orderer
• Hyperledger Fabric CA
• Hyperledger Fabric SDK
• Membership Service Providers

What is necessary for a chaincode to become ready to commit on a channel?

• The chaincode must be previously installed on the channel’s peers.
• The policy Channel/Application/Writers must be satisfied.
• The policy /Channel/Application/LifecycleEndorsement must be satisfied.
• The chaincode must have the endorsement policies correctly defined.