CBSA Cheat Sheet 2026

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

1. What is a key concept in this domain? → Correct Concept
2. What regulatory framework in the US classifies a digital asset as a security using the 'Howey Test'? → SEC Securities Act
3. In a security token offering (STO), what is the role of a transfer agent on the blockchain? → To enforce compliance rules such as KYC/AML whitelists during token transfers
4. Which of the following applies to the domain? → Core Principle
5. Which metric is most commonly used to measure and compare blockchain transaction throughput? → Transactions per second (TPS)
6. Which of the following applies to the domain? → Core Principle
7. Which ERC token standard is used for non-fungible tokens (NFTs) on Ethereum? → ERC-721
8. Which token model aligns with a 'work token' design where value accrues to stakers who perform services? → Protocol where only staked token holders can provide services and earn fees
9. In a Proof of Stake (PoS) consensus mechanism, what is the primary purpose of 'slashing'? → To penalize validators for malicious behavior or being offline.
10. Which mechanism allows token holders to redeem tokens for an underlying asset in a tokenized asset system? → Burning
11. Which of the following applies to the domain? → Core Principle
12. What is a key concept in this domain? → Correct Concept
13. In the context of smart contract design, what is the primary purpose of the 'Checks-Effects-Interactions' pattern? → To prevent reentrancy attacks by performing state changes before external calls.
14. What is a key concept in this domain? → Correct Concept
15. What is the primary scalability trade-off when simply increasing blockchain block size? → Higher hardware requirements for running full nodes raise centralization risk
16. Which token standard supports both fungible and non-fungible tokens in a single contract? → ERC-1155
17. When designing a tokenized supply chain system, which approach best ensures the provenance of a physical good mapped to an NFT? → Combining IoT sensor attestations with on-chain NFT minting at each custody transfer point
18. What is 'wrapping' a token (e.g., Wrapped Bitcoin / WBTC)? → Creating a new token on a different blockchain that is backed 1:1 by the original asset
19. Which of the following is a primary trade-off when choosing a private blockchain architecture over a public one? → Enhanced privacy and performance at the cost of decentralization.
20. What is a key concept in this domain? → Correct Concept
21. When designing a blockchain solution, a key architectural consideration is the 'Blockchain Trilemma,' which involves a trade-off between which three properties? → Decentralization, Scalability, and Security
22. Which technology category enables separate blockchain networks to transfer tokens and arbitrary data with each other? → Cross-chain interoperability protocols (e.g., Polkadot, Cosmos IBC)
23. What does 'throughput' specifically measure in a blockchain performance context? → The volume of transactions the network can process per unit of time
24. Which type of oracle is most appropriate for providing real-world asset prices to a token smart contract? → Decentralized oracle network
25. Which scaling technique divides a blockchain network into smaller groups of nodes, each responsible for processing a subset of transactions? → Sharding
26. What is the primary purpose of a Layer 2 scaling solution in blockchain? → To process transactions off the main chain while inheriting its security
27. Bitcoin's Lightning Network is an example of which Layer 2 scaling category? → Payment/State channel network
28. Which off-chain data storage solution is most commonly paired with blockchains to handle large files while keeping storage costs low? → IPFS (InterPlanetary File System)
29. In a blockchain protocol upgrade scenario, what is a 'hard fork' governance event? → A backward-incompatible protocol change that splits the network if not all nodes upgrade
30. Which of the following applies to the domain? → Core Principle