CBE Cheat Sheet 2026

The 30 highest-yield CBE facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which approach is recommended for implementing system architecture changes? → Following a structured change management process with testing
2. Which blockchain platform is widely known for supporting smart contracts? → Ethereum
3. What US executive order, issued in 2022, directed federal agencies to coordinate on digital asset regulation? → EO 14067 — Ensuring Responsible Development of Digital Assets
4. What should you do when troubleshooting a system architecture issue? → Follow a systematic approach: identify, research, test, implement, verify
5. How should you document system architecture configurations? → Maintain up-to-date documentation in a centralized, accessible location
6. What security consideration is most important in system architecture? → Implementing the principle of least privilege and defense in depth
7. Which of the following is a primary characteristic that distinguishes a smart contract from a traditional legal contract? → Its terms are self-executing and enforced by code on a blockchain.
8. Which programming language is primarily used to write Ethereum smart contracts? → Solidity
9. What does the CFTC regulate in the cryptocurrency space? → Crypto derivatives and futures contracts, classifying Bitcoin and Ether as commodities
10. What is the role of consensus in blockchain networks? → To reach agreement among nodes
11. What does 'tokenomics' refer to in the context of blockchain ecosystems? → The economic model governing a token's supply, distribution, and incentives
12. Which protocol is specifically designed for cross-chain messaging and asset transfers using a hub-and-spoke model? → Cosmos IBC (Inter-Blockchain Communication)
13. Which cross-chain standard does Polkadot use for message passing between parachains? → XCM (Cross-Consensus Message Format)
14. Which type of token grants holders access to a specific product or service within a blockchain platform? → Utility token
15. Which US regulatory body primarily oversees cryptocurrency exchanges and classifies many tokens as securities? → SEC
16. Which of the following components is NOT typically found within a block on a blockchain? → The private keys of the transaction senders
17. What is a smart contract in blockchain technology? → Self-executing program
18. Which type of DAO structure gives voting weight proportional to the number of governance tokens held? → Token-weighted voting
19. What ensures the immutability of blockchain data? → Hash functions and consensus
20. What does 'circulating supply' refer to when analyzing a cryptocurrency's tokenomics? → The number of tokens currently in the market and available for public trading
21. Which blockchain platform is widely known for supporting smart contracts? → Ethereum
22. Which Layer 2 scaling solution bundles hundreds of transactions off-chain and submits a single proof to the main chain? → ZK-Rollup
23. In a Delegated Proof of Stake (DPoS) system, how are block producers (validators) chosen? → Token holders vote for a limited number of delegates to act as validators on their behalf.
24. What is a node in the context of blockchain? → Network participant
25. What is a key benefit of dApps over traditional apps? → Censorship resistance
26. Which consensus algorithm is used by Bitcoin? → Proof of Work
27. What is the primary characteristic that distinguishes a consortium blockchain from a private blockchain? → Governance is shared among multiple organizations.
28. Which blockchain consensus mechanism is designed for scalability and speed? → Delegated Proof of Stake
29. In blockchain governance, what is a 'hard fork' typically used to resolve? → Irreconcilable protocol disagreements that split the community
30. In a Proof of Stake (PoS) consensus mechanism, how are participants chosen to validate new blocks and add them to the chain? → Based on the amount of cryptocurrency they hold and are willing to 'stake' as collateral.