BTA Certified Blockchain Solution Architect Exam (CBSA) - Blockchain

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Sample CBSA Exam Questions & Explanations

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Question #1 Verified Q&A
SHA-1 is the most commonly used SHA algorithm, and produces a ______<br />
<br />
-byte hash value(size).
A 20
B 128
C 256
D 32
Correct Answer: 20
Explanation:
SHA-1 is the most commonly used SHA algorithm, and produces a 20-byte hash value.
Question #2 Verified Q&A
What type of attack would be considered a very large flaw in public blockchains such as Bitcoin’s Blockchain where the majority of hashpower could possibly be controlled thru an attack?<br />
<br />
What is the specific attack Bitcoin could be exposed to?
A Parity Wallet Attack
B Tether Token Hack
C 51% Attacks
D DDoS Attack
E BIP attack
Correct Answer: 51% Attacks
Question #3 Verified Q&A
How many satoshis are in 1 bitcoin and how many wei in an Ether? (Select two.)
A 1,000,000,000,000
B 1,000,000,000,000,000,000
C 10,000
D 1,000,000,000,000,000
E 1,000,000,000
Correct Answer: 1,000,000,000,000,000,000, 1,000,000,000,000,000
Question #4 Verified Q&A
In the Proof of Stake(POS) algorithm the miners are really known as ___________?
A Oracle
B Notary
C Forgers
D Minters
Correct Answer: Forgers
Explanation:
Proof of Stake has the same goal as proof of work—to validate transactions and achieve consensus in the chain—and it uses an algorithm but with a different process. With proof of stake, the creator of a new block “is chosen in a deterministic way, depending on its wealth, also defined as a stake.” Since in a proof of stake system, there is no block reward, but the miners, known as forgers, get the transaction fees. Proponents of this shift, including Ethereum co-founder Buterin, like proof of stake<br />
for the energy and cost savings realized to get to a distributed form of consensus.
Question #5 Verified Q&A
A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that requires________.<br />
<br />
What is required?
A Availability
B Crypthography
C Consensus
D Bandwidth
Correct Answer: Consensus
Explanation:
A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus.

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Frequently Asked Questions

Common questions about the Blockchain CBSA certification practice test

How many questions are in the Blockchain CBSA practice exam on ExamsQA?
Our CBSA (BTA Certified Blockchain Solution Architect Exam) practice question bank currently includes 229 verified questions with comprehensive explanations.
Are the CBSA exam practice questions up to date for 2026?
Yes, all Blockchain CBSA practice questions are regularly updated and verified against current exam objectives.
Will the CBSA practice questions help me pass on my first attempt?
The CBSA (BTA Certified Blockchain Solution Architect Exam) question bank is built to mirror the real exam's format and topics, with detailed explanations for every answer so you understand the reasoning — not just memorize responses.
Is there a free demo available for CBSA BTA Certified Blockchain Solution Architect Exam?
Yes, ExamsQA offers free demo questions for the CBSA exam so you can test the interface and question quality before purchasing full access.