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Free Blockchain CBSA Practice Exam with Questions & Answers | Set: 4

Questions 31

Which of the following scenarios and databases is least suited to be utilized by a blockchain solution?

Options:
A.

Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date

B.

Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body

C.

Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History

D.

Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added

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Questions 32

Blockchain systems can offer what advantage over centralized systems?

Options:
A.

They are much easier to maintain and update

B.

They have significantly higher transaction speeds

C.

Their distributed ledger systems are more secure and immutable

D.

All of the above

Questions 33

In common blockchain design, which data structure is used to create a lightweight digital fingerprint of all the transactions within a block?

Options:
A.

Blockchains are unique in that they utilize no data structures

B.

Lexicographic Search Tree

C.

Bloom Filter

D.

Merkle Tree

Questions 34

What is the nonce-field in a transaction?

Options:
A.

To sum up all ethers sent from that address

B.

Protects against replay attacks

C.

To distribute the workloads in the EVM

D.

Adds a checksum for transactions

Questions 35

You are considering writing smart contracts and there are a few different languages you can consider. (Select two.)

Options:
A.

Truffle

B.

Serpent

C.

Solidity

D.

Embark

Questions 36

What are two cryptocurrencies that you would expect to see mining equipment with ASICS? (Select two.)

Options:
A.

Bitcoin

B.

Ethereum

C.

Neo

D.

Litecoin

E.

Monero

Questions 37

What type of peer node executes transactions?

Options:
A.

Monitoring

B.

API Peer

C.

Endorsing Peer

D.

Ordering Peer

Questions 38

Blockchain systems assume all parties are trusted by all other parties in the exchange or ecosystem.

Options:
A.

FALSE

B.

TRUE

Questions 39

In what way(s) can Ethereum Smart Contract functions be invoked?

Options:
A.

Only through code executed in other Smart Contracts and XML-RPC

B.

Through code executed in other Smart Contracts and through web3.js or any JSON-RPC library

C.

Only through code executed in another Smart Contract

D.

Smart Contracts cannot be externally invoked. They become autonomous at launch and cannot be called.

Questions 40

You are trying to generate a random number in Ethereum blockchain. What is the best way?

Options:
A.

Wikipedia

B.

Coindesk

C.

Coinbase

D.

Randao

E.

ERC20

Exam Code: CBSA
Certification Provider: Blockchain
Exam Name: BTA Certified Blockchain Solution Architect
Last Update: Jul 10, 2025
Questions: 229

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