A developer is designing a Fabric network and needs to ensure that the network can continue to operate if one of the ordering nodes fails. Which approach provides fault tolerance for the ordering service?

Run the ordering service on the same container as the peers.

Use a single ordering node with a backup database.

Configure the peers to take over ordering if the orderer fails.

Deploy multiple ordering nodes in a Raft cluster.

A consortium of five banks runs a Fabric network. They want a transaction to be considered valid only if at least two banks, including Bank A, endorse it. Which endorsement policy expression satisfies this requirement?

OUTOF(2, 'BankA.peer', 'BankB.peer', 'BankC.peer')

AND('BankA.peer', 'BankB.peer')

AND('BankA.peer', OR('BankB.peer', 'BankC.peer', 'BankD.peer', 'BankE.peer'))

How does an organization add its peer to an existing channel in Hyperledger Fabric?

By updating the channel configuration with the peer's certificate

By using the peer channel join command with the genesis block

By installing chaincode on the peer

By restarting the peer with a new configuration

EC-CouncilBlockchain Developer Certification

Domain 8Objective 1

Hyperledger Fabric Architecture and Network Creation BDC Practice Questions (Page 2)

Part of the Enterprise Blockchain Platforms domain, which makes up ~10% of our current practice bank.

59questions here

12free pages

16concepts

16 Concepts in This Objective

Hyperledger Fabric Architecture Overview
Peer Nodes and Roles
Ordering Service
Channels
Membership Service Provider (MSP)
Ledger and State Database
Chaincode (Smart Contracts)
Network Setup and Configuration
Creating and Joining Channels
Deploying Chaincode
Transaction Flow
Consensus Mechanisms
Endorsement Policies
Organizations and Peers Configuration
Network Bootstrapping with Docker
Fabric CLI and Admin Operations

Questions 6–10

6application · medium
A developer is designing a Fabric network and needs to ensure that the network can continue to operate if one of the ordering nodes fails. Which approach provides fault tolerance for the ordering service?
Select an answer first
7application · medium
A consortium of five banks runs a Fabric network. They want a transaction to be considered valid only if at least two banks, including Bank A, endorse it. Which endorsement policy expression satisfies this requirement?
Select an answer first
8application · medium
A developer is bootstrapping a Fabric network for development using Docker Compose. They have created the crypto material for the orderer and peer organizations. Which configuration file is essential for defining the network topology, including the orderer, peers, and their containers?
Select an answer first
9foundation · easy
Which Fabric CLI command is used to create a new channel?
Select an answer first
10foundation · easy
How does an organization add its peer to an existing channel in Hyperledger Fabric?
Select an answer first

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Hyperledger Fabric Architecture and Network Creation BDC Practice Questions (Page 2)

Questions 6–10

A developer is designing a Fabric network and needs to ensure that the network can continue to operate if one of the ordering nodes fails. Which approach provides fault tolerance for the ordering service?

A consortium of five banks runs a Fabric network. They want a transaction to be considered valid only if at least two banks, including Bank A, endorse it. Which endorsement policy expression satisfies this requirement?

A developer is bootstrapping a Fabric network for development using Docker Compose. They have created the crypto material for the orderer and peer organizations. Which configuration file is essential for defining the network topology, including the orderer, peers, and their containers?

Which Fabric CLI command is used to create a new channel?

How does an organization add its peer to an existing channel in Hyperledger Fabric?

Keep studying — Enterprise Blockchain Platforms