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Exam Overview
Exam Code CBSA
Exam Name Blockchain BTA Certified Blockchain Solution Architect
Vendor Blockchain
Total Questions 229
Last Updated 26-Oct, 2026
Free CBSA Questions Get Premium Access
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Free CBSA Practice Questions

Explore 5 free practice questions for the Blockchain CBSA exam and review the answers and explanations to support your preparation.

  1. Question 1

    Single answer

    Which is the following is the metaphor that describes a logical dilemma that plagues many computer networks?

    • Option A:
       Neo Generals’ problem
      Correct
    • Option B:
      Byzantine Generals’ problem
      Correct
    • Option C:
      Byzantine Admirals’ problem
      Correct
    • Option D:
      Renaissance Generals’ problem
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: B

    Explanation

    BFT is so-named because it represents a solution to the "Byzantine generals' problem," a logical dilemma that researchers Leslie Lamport, Robert Shostak and Marshall Pease described in an academic paper published in 1982 

  2. Question 2

    Single answer

    What type of blockchain would this customer likely want specified for their enterprise?

    • Option A:
      Permissionless
      Correct
    • Option B:
      Decentralized
      Correct
    • Option C:
      Hybrid
      Correct
    • Option D:
      Permissioned 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: D

    Explanation

    Sometimes referred to as “private” blockchains, you are required to have some sort of permission to access any or parts of that blockchain. There are a multitude of variants and hybrid permissioned/permissionless blockchains that exist. 

  3. Question 3

    Multiple answers

    What are two challenges with using a Proof of Work algorithm? (Select two.)

    • Option A:
      Mining pools not allowed
      Correct
    • Option B:
      Difficulty rate goes done every year. 
      Correct
    • Option C:
      Expensive
      Correct
    • Option D:
      Power Intensive 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: C, D

  4. Question 4

    Multiple answers

    You currently using the Metamask Chrome plugin and you see a selection for Etherescan in the plugin. What is Etherscan used for?

    • Option A:
       search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum Blockchain
      Correct
    • Option B:
      A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Bitcoin Blockchain
      Correct
    • Option C:
      A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum and Tokens Blockchain
      Correct
    • Option D:
      A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on any Blockchain 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A

  5. Question 5

    Multiple answers

    A Byzantine failure is the loss of a system service due to a Byzantine fault requires . What is required?

    • Option A:
      Consensus
      Correct
    • Option B:
      Crypthography
      Correct
    • Option C:
      Bandwidth
      Correct
    • Option D:
      Availability 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A