Most Recent Linux Foundation HFCP Exam Dumps

When a client application uses the Fabric Gateway client API to create a Gateway connection to a Hyperledger Fabric network, it must supply the client's X.509 certificate and private key. The X.509 certificate is used to authenticate the client to the network, confirming the client's identity and permissions. The private key is used for signing transactions, which is necessary for the network to validate the integrity and origin of the transactions submitted by the client. This combination ensures that both the identity of the client is verified and that transactions cannot be tampered with without detection.

In Hyperledger Fabric, private data collections are configured using a separate JSON file that describes the details of the collection, such as the name, policy, and member organizations that have access to it. This configuration file is included during the chaincode deployment process. The collections configuration file defines how private data is managed, including its lifecycle, storage, and dissemination between authorized peers. By configuring private data collections in this manner, organizations ensure that sensitive information is only accessible to specific participants in the network, thus maintaining confidentiality and compliance with data governance standards.

In Hyperledger Fabric, when executing queries on the ledger, the difference between simple keys and composite keys is significant. Simple keys consist of a single attribute and are straightforward in their use for querying. In contrast, composite keys are formed by combining multiple attributes into a single key, allowing for more complex queries based on multiple fields. Composite keys enable richer, more flexible query capabilities that can facilitate refined searches and analyses within the ledger. This capability is particularly useful in scenarios where a single attribute is not sufficient to uniquely identify ledger entries or when queries need to filter based on multiple criteria.

The correct subcommands for querying in the peer lifecycle chaincode arequeryinstalled,queryapproved,checkcommitreadiness,commit, andquerycommitted1. The subcommandquerypackagedis not a supported subcommand for querying in the peer lifecycle chaincode.

When deploying an Orderer environment in Hyperledger Fabric, the primary configuration file that must be customized or overridden is orderer.yaml. This file contains the configuration settings specifically for the orderer node, including general ledger type, consensus type, and various operational settings like batching, timeouts, and MSP configurations. Other files like crypto-config.yaml, docker-compose.yaml, and configtx.yaml serve different roles. crypto-config.yaml is used for generating cryptographic material, docker-compose.yaml for defining services, networks, and volumes for containers, and configtx.yaml for channel configuration and consortium definitions. Therefore, orderer.yaml is critical for setting up the orderer's behavior and parameters in the network environment.