Hyperledger Fabric Architecture and Network Creation BDC Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   What is the role of the Membership Service Provider (MSP) in Hyperledger Fabric?

   • ATo execute chaincode and update the world state
   • BTo provide a user interface for network administrators
   • CTo order transactions and create blocks
   • DTo manage identities and validate the authenticity of participants
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A Fabric network uses a Raft ordering service. A client submits a transaction that has been endorsed by the required peers. What is the role of the Raft consensus mechanism in this network?

   • AIt stores the world state and maintains the current state database.
   • BIt executes chaincode and computes the read-write set for each transaction.
   • CIt ensures that all ordering nodes agree on the same sequence of transactions and blocks.
   • DIt validates the endorsement policy and ensures that all transactions are valid.
   Reveal Solution Discussion Select an answer first
4. 28expert · medium

   A peer is configured as an anchor peer on a channel. What is the primary function of an anchor peer?

   • AIt is responsible for ordering transactions on the channel.
   • BIt is the only peer that can endorse transactions on the channel.
   • CIt stores a separate copy of the ledger for backup purposes.
   • DIt enables cross-organization gossip communication by being discoverable by peers from other organizations.
   Reveal Solution Discussion Select an answer first
5. 29application · medium

   A developer is designing a Fabric network for a multi-organization consortium. They need to ensure that the network can continue to operate if one organization's peer goes down, and that transactions are still ordered even if one ordering node fails. Which architectural choices support this?

   • ARun a single peer per organization and a single ordering node.
   • BRun multiple peers per organization and use a Raft ordering service with multiple ordering nodes.
   • CRun all peers in a single organization and use a centralized ordering service.
   • DUse a solo ordering service and rely on the peers to maintain consensus.
   Reveal Solution Discussion Select an answer first
6. 30expert · medium

   A chaincode upgrade is needed to fix a bug. The new version has been packaged and installed on all peers. What is the correct sequence to activate the new version on the channel?

   • AUpgrade the chaincode using the old 'peer chaincode upgrade' command.
   • BApprove the new chaincode definition for each organization, then commit it to the channel.
   • CSubmit a transaction to the old chaincode to trigger the upgrade.
   • DRestart all peers to load the new chaincode version.
   Reveal Solution Discussion Select an answer first