Blockchain CBSA BTA Certified Blockchain Solution Architect Online Training
Blockchain CBSA Online Training
The questions for CBSA were last updated at Nov 01,2025.
- Exam Code: CBSA
- Exam Name: BTA Certified Blockchain Solution Architect
- Certification Provider: Blockchain
- Latest update: Nov 01,2025
The merkle tree contains a full list of the transactions on the blockchain?
- A . FALSE
- B . TRUE
Select the best statement for determining how consensus is reached.
- A . By the miner nodes which make sure that a transaction is valid.
- B . By a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible.
- C . By every single node in the blockchain network different transactions.
- D . By every single node in the blockchain network executing the same transaction.
What are some advantages of Proof of Stake (POS) mining over Proof of Work (POW) mining? (Select three.)
- A . Energy efficient in regards to that it could consume for electricity as compared to PoW
- B . Faster Hashing algorithms
- C . No need for expensive compared to POW
- D . Faster validations compared to POW
- E . Better blockchain security compared to POW
Which factor influences the gas cost to deploy a Smart Contact on the Ethereum blockchain?
- A . None. Smart Contract deployment has a fixed gas cost
- B . The types of operations written in code within the Smart Contract
- C . The current Ethereum market conditions
- D . The total size of the complied Smart Contract measured in kilobytes
In Proof of Work group consensus, the “nonce” refers to?
- A . The random data to be combined with the block data which will produce a hash output matching the current difficulty level
- B . Random nonsense data inserted at the end of a block to fill it completely
- C . The average Bitcoin price over the last 90 days
- D . None of the above
By default, who can see transaction details on a public/open blockchain?
- A . The initiator
- B . Everyone
- C . The recipient of a transaction
- D . The network owner / administrator
The “Nothing-at-Stake” problem that could be realized by Proof of Stake networks would be caused by what?
- A . If all of the validator nodes are taken offline
- B . If validator nodes reject all transactions
- C . Validator nodes approving all transactions on old and new software after a hard fork occurs
- D . All of the above
Anonymity can be protected in blockchain applications by use of which of the following?
- A . Centralized application hosting
- B . End-to-end encryption
- C . Cryptographic hashing
- D . Blockchain-based data cubes
The Secure Registry Services enables Secured ____________Registry of base Hyperledger images and custom images containing chaincodes.
What type of registry is implemented?
- A . Docker
- B . EVM
- C . Kubenetes
- D . VMWare
In Hyperledger, nodes need a ________________ to be able to communicate to the
network.
- A . Valid Certificate
- B . Valid License
- C . Valid YAML file
- D . Valid JSON file
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