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Blockchain CBDH Exam
BTA Certified Blockchain Developer – Hyperledger (Page 8 )

Updated On: 19-Jan-2026
Page 8 of 40
PDF with 195 Questions

The concept of a node is common in most blockchains. Which of the following about nodes is INCORRECT?

  1. Nodes need a valid certificate to be able to communicate to the network
  2. Nodes connect to other nodes and that is how a blockchain is formed
  3. These three types of nodes. Client, peer and Ordered
  4. Nodes use a type of client server protocol for keeping the distributed ledger in sync across the network

Answer(s): D

Explanation:

Nodes use a Peer to Peer protocol not a Client Server. The concept of node is common in all blockchain technologies. The "Node" becomes the communication end point in blockchain technology. Nodes connect to other nodes and that is how a blockchain is formed. Nodes use a type of peer-to-peer protocol for keeping the distributed ledger in sync across the network.



Which Hyperledger Fabric ordering mechanism is recommended for production use?

  1. BFT
  2. Kafka
  3. SBFT
  4. SOLO

Answer(s): B

Explanation:

Kafka is the Hyperledger Fabric ordering mechanism that is recommended for production use. This ordering mechanism utilizes Apache Kafka, an open source stream processing platform that provides a unified, high-throughput, low-latency platform for handling real-time data feeds.



The business network definitions are packaged into what file?

  1. .cto
  2. .acl
  3. .bnd
  4. .bna

Answer(s): D

Explanation:

Explanation.bna is also know as a "banana" file in the hyperledger world. Before a business network definition can be deployed it must be packaged into a Business Network Archive (.bna) file. The composer archive create command is used to create a business network archive file from a business network definition folder on disk.



What is a transaction request sent from a client or admin user to one or more peers in a network?

  1. Chaincode
  2. Proposal
  3. Update
  4. RPC

Answer(s): B

Explanation:

Proposal is A transaction request sent from a client or admin user to one or more peers in a network; examples include deploy, invoke, query, or configuration request. https://fabrictestdocs.readthedocs.io/en/latest/glossary.html



Which of the following statements would be true regarding Hyperledger Composer Playground?

  1. Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are logged but not created.
  2. Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are stored in the database and logged.
  3. Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created but lot logger.
  4. Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created and logged.

Answer(s): D

Explanation:

This web-based tool allows developers to learn Hyperledger Composer, model out their business network (domain), test that network, and deploy that network to a live instance of a blockchain network. The playground keeps the development model in browser storage, allowing them to be easily uploaded or downloaded. The playground also allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created and logged. Composer playground offers a repository of sample business networks that can provide a base for building your own business network.



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