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Blockchain CBSA Exam
BTA Certified Blockchain Solution Architect (Page 8 )

Updated On: 12-Jan-2026
Page 8 of 47
PDF with 229 Questions

Hyperledger Composer has following two main components?

  1. Composer Playground
  2. Business Network Archive

Answer(s): A,B

Explanation:

Hyperledger Composer has following main components:
1) Business Network Archive: Capturing the core data in a business network, including the business model, transaction logic, and access controls, the Business Network Archive packages these elements up and deploys them to a runtime. Business Network Archive files are stored as “.bna” files.
2) Composer Playground: 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



What type of peer node executes transactions?

  1. Monitoring
  2. API Peer
  3. Endorsing Peer
  4. Ordering Peer

Answer(s): C

Explanation:

Endorsing Peers (Endorsers) An endorser executes and endorses transactions. The endorsing peers take the role of endorsing transactions before they are ordered and committed as per the policy defined in Chaincode.



In Ethereum a block contains two very important parameters. (Select two.)

  1. Difficulty
  2. Release date
  3. Block number
  4. Timestamp

Answer(s): A,D

Explanation:

Difficulty and Timestamp block also contains two very important parameters: a difficulty and a timestamp. The difficulty regulates how hard it is to find a block by the miner. The mining time is set to be between 10 and 20 seconds. If it’s beyond 20 seconds, the difficulty is too high and will be automatically lowered going forward. If the mining happens below 10 seconds, then the difficulty increases. The timestamp is the time when a miner found the block. It is not automatically derived, rather it is set by the miner itself and can thus be influenced to a certain degree. The timestamp does not depend on the time zone, as it’s the standard Unix timestamp.



Select the best statement for determining how consensus is reached.

  1. By the miner nodes which make sure that a transaction is valid.
  2. By a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible.
  3. By every single node in the blockchain network different transactions.
  4. By every single node in the blockchain network executing the same transaction.

Answer(s): D

Explanation:

If you send a transaction to the network, then one miner-node will at some point pick it up. The Miner will run the transaction and add the result to the next block. Now, this doesn’t imply consensus yet. By design all nodes don’t trust each other. Each node must verify that the transaction the miner added to the block is really valid.

This means, consensus is reached by having every node running the same transactions again and verifying that the result is correct. Plus, the results are verified in a cryptographic manner.



When developing in Ethereum which is considered to be an In-Memory Blockchain simulations for rapid development?

  1. Cpp-ethereum
  2. Geth
  3. TestRPC
  4. Parity

Answer(s): C

Explanation:

There are several redundant implementations of the Ethereum protocol to ensure the correctness of the implementation. Additionally, not all blockchain nodes operate the same way. Some are purely for developing and hold a blockchain in-memory and just simulate the mining. Real Blockchain Nodes: 1. Cpp-ethereum 2. Go-Etheruem (GETH) 3. Parity In-Memory Blockchain simulations for rapid development: 1. TestRPC 2.
Ganache 3. Truffle Developer Console Clients to access the blockchain in a convenient way: 1. MetaMask browser Plugin through Infura 2. Status.IM Android/iOS app through Infura 3. MIST DApp Browser with integrated GETH



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