CBSA Exam Preparation Material | BTA Certified Blockchain Solution Architect

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Prepare for the CBSA BTA Certified Blockchain Solution Architect exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

What are two reasons that you would consider implementing a POW algo in your blockchain? (Select two.)

A. PoW imposes no limits on actions in the network and therefore can thwart attacks better than other algos due to high cost B . What matters is to have large computational power to solve the puzzles and form new blocks over having a financial stake.
B. PoW imposes some limits on actions in the network and therefore can thwart attacks better than other algos due to high cost
C. The algo is energy efficient compared to POS and BFT
D. The algo is energy efficient compared to POS and DPOS

Explanation:
The main benefits are the anti-DoS attacks defense and low impact of stake on mining possibilities. Defense from DoS attacks. PoW imposes some limits on actions in the network. They need a lot of efforts to be executed. Efficient attack requires a lot of computational power and a lot of time to do the calculations. Therefore, the attack is possible but kind of useless since the costs are too high. Mining possibilities. It doesn’t matter how much money you have in your wallet .
What matters is to have large computational power to solve the puzzles and form new blocks. Thus, the holders of huge amounts of money are not in charge of making decisions for the entire network.

Question#2

Vitalik Buterin referred to this concept of trust beyond just currency as ‘smart contracts’ or even blockchain-based “decentralized autonomous organizations” (DAOs). Ethereum is considered Blockchain version?

A. 2.0
B. 4.0
C. 3.0
D. 1.0

Explanation:

Question#3

Gas has multiple associated terms with it: Gas Prices, Gas Cost, Gas Limit, and Gas Fees. The principle behind Gas is to have a stable value for how much a transaction or computation costs on the Ethereum network.
Which is considered to be the static value for how much a computation costs in terms of Gas?

A. Price
B. Fee
C. Cost
D. Limit

Explanation:
Gas Cost is a static value for how much a computation costs in terms of Gas, and the intent is that the real value of the Gas never changes, so this cost should always stay stable over time

Question#4

What is a logic gate in electronics and computer science?

A. A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.
B. A logic gate usually takes in 3 inputs and gives out 2 output. The inputs and outputs are binary values, meaning they can be 1 or 0.
C. A logic gate usually takes in 2 inputs and gives out 6 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.
D. A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be 1 or 0.

Explanation:
A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be 1 or 0. A XOR logic gate takes in 2 binary inputs and gives out a high output ONLY when the inputs are different. Meaning, if A and B are inputted to a XOR gate then the out C will be 1 ONLY when A is not equal to B.

Question#5

What is another name for blockchains that run adjacent to the blockchains and also offer more scope for processing contracts?

A. Adchains
B. Funnelchains
C. Multichains
D. Sidechains

Explanation:
Sidechain is another name for blockchains that run adjacent to Bitcoin and offer more scope for processing contracts.

Exam Code: CBSA
Q & A: 229 Q&As         Updated:  Oct 17,2026

 

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What This CBSA Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current CBSA exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This CBSA Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the CBSA exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

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Exam Code: CBSA
Q & A: 229 Q&As
Updated:  Oct 17,2026

 

 Access Complete CBSA Preparation Material