Practice Test Geeks(CBSE) Certified Blockchain Security Expert Practice Test
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Credential Curriculum and Topics Flashcards

7 cards from real CBSE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Credential Curriculum and Topics flashcards as text

  1. Which CBSE topic area addresses the process of formally verifying smart contract logic before deployment?

    Answer: Formal Verification and Auditing

    Formal Verification and Auditing covers mathematical proof techniques and code audit methodologies used to confirm that smart contract behavior matches its specification.

  2. A CBSE professional is reviewing a DeFi protocol's flash loan mechanism. Flash loan attacks are dangerous primarily because they allow attackers to do what?

    Answer: Borrow large amounts of capital with no collateral within a single transaction block

    Flash loans provide uncollateralized capital within a single atomic transaction, allowing attackers to manipulate prices or exploit vulnerabilities at scale with no upfront capital risk.

  3. The CBSE curriculum covers cryptographic hash functions. Which property ensures that two different inputs cannot produce the same hash output?

    Answer: Collision resistance

    Collision resistance means it is computationally infeasible to find two distinct inputs that produce the same hash digest, protecting blockchain integrity.

  4. In the CBSE body of knowledge, what is the primary security concern with using a deterministic wallet (BIP-32 HD wallet)?

    Answer: Compromise of the master seed exposes all derived child keys

    Because all child keys are derived from a single master seed in a BIP-32 HD wallet, an attacker who obtains the seed gains control over every address in the wallet hierarchy.

  5. Which CBSE curriculum topic examines the risks posed by Miner/Maximal Extractable Value (MEV) to blockchain fairness and security?

    Answer: Consensus and MEV Security

    Consensus and MEV Security explores how validators or miners can reorder, insert, or censor transactions to extract value, undermining transaction fairness and protocol integrity.

  6. According to CBSE standards, which attack vector targets blockchain nodes by flooding the network with invalid transactions to exhaust resources?

    Answer: Denial-of-Service (DoS) / Spam attack

    A DoS or spam attack on a blockchain network involves flooding nodes with high volumes of invalid or low-fee transactions to exhaust memory, CPU, or bandwidth resources.

  7. The CBSE curriculum addresses cross-chain bridge security. What is the most common vulnerability class exploited in bridge hacks?

    Answer: Flawed or over-permissioned smart contract logic controlling locked funds

    Most major bridge exploits (e.g., Ronin, Wormhole) stem from flawed smart contract logic, missing validation checks, or compromised multi-sig keys controlling the bridge's locked assets.