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Linux Foundation HFCP Exam Questions
- Topic 1: Fundamentals of Blockchain: It includes sub-topics of Distributed Ledgers, Smart Contracts, and Consensus. The topic also covers Consensus and Business Benefits as well.
- Topic 2: Hyperledger Fabric Networks: The topic covers Network Structure, Transaction Flow, Ordering Service, Peers and World State Storage. Moreover, questions about Network Creation, Membership Service Providers, Maintenance and Operation, and Channel-related Operations also appear. Lastly, the topic delves into Design and Deployment of Production Networks.
- Topic 3: Smart Contracts: It focuses on Design and Implementation, Chaincode Lifecycle, Reading and Modifying the Ledger State, Executing Queries on the Ledger, Private Data and Private Data Collections, and State-based Endorsement Policies.
- Topic 4: Client Applications: This topic discusses Gateway Model, Offline Signing, Peer Gateway Service, and Smart Contract Invocation. It also covers the sub-topic of Chaincode and Block Eventing.
Free Linux Foundation HFCP Exam Actual Questions
Note: Premium Questions for HFCP were last updated On Jul. 29, 2026 (see below)
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?
In Hyperledger Fabric, if end users of the application want to keep their private key secret and secure, they would use offline signing. Offline signing involves signing transactions on a device or in an environment that is not connected to the network or the internet. This method ensures that the private key used for signing does not get exposed to the network and reduces the risk of compromise. Offline signing is especially important in scenarios where security and privacy are paramount, as it allows users to maintain control over their private keys at all times.
An enterprise blockchain is a permission blockchain node distributed to whom?
In Hyperledger Fabric, the enterprise blockchain is a permissioned network where nodes are distributed among the member organizations that participate in the blockchain network. This is in contrast to a public blockchain where anyone can participate anonymously. In a permissioned blockchain like Hyperledger Fabric, the participants are known entities within a business network, such as enterprises or organizations, that have specific permissions and roles within the network. This setup enhances security and trust as each participant is vetted and authorized to take part in the network operations. The architecture of Hyperledger Fabric is designed to support such a governance model, where multiple organizations can interact in a secure and regulated environment, maintaining their own ledgers but sharing data that require consensus across known entities.
Which of the following statements describes Chaincode correctly?
Chaincode in Hyperledger Fabric is essentially smart contract software that defines assets and the transaction instructions for modifying these assets on the ledger. Chaincode functions as the business logic layer of the network, where the rules for interacting with the ledger are specified. It is executed on the network peers and is used to encode the policies and constraints associated with asset exchanges or updates within the business network. This setup allows organizations to automate processes and enforce consistency and compliance across transactions.
After the transaction that contains the delState("A") function is committed, what happens to the ledger and state database?
In Hyperledger Fabric, when a transaction that includes the delState('A') function is committed, it results in the removal of the state of the key 'A' from the current state database. However, the history of all transactions that have affected the key 'A' remains intact in the ledger. This operation ensures that while the current state reflects the deletion, the immutability and traceability of the ledger are preserved, allowing for auditability and verification of past states. Options such as setting an empty value to the key or altering the transaction history are not supported, as they would violate the principles of immutability and transparency central to blockchain technology. Therefore, the correct outcome of a delState('A') operation is that the current state of 'A' is deleted, but its transaction history remains accessible in the ledger.
Which subcommand adds a peer to a channel in Hyperledger Fabric?
In Hyperledger Fabric, the correct subcommand to add a peer to a channel is peer channel join. This command is used by a peer node to join an existing channel. The command requires a block to be specified which typically is the genesis block of the channel, allowing the peer to synchronize with the channel's ledger from the beginning. Other commands like peer channel fetch, peer channel create, and peer channel update serve different purposes. peer channel fetch retrieves blocks from a channel, peer channel create is used to set up a new channel, and peer channel update modifies channel settings. Thus, peer channel join is the specific command used to connect a peer to a channel.
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