ISACA · Blockchain-Fund
Validates foundational knowledge of blockchain technology, covering blockchain history, principles, processes, and infrastructure, as well as real-world applications, implementation challenges, deployment best practices, encryption, and consensus mechanisms.
Practice Questions
599
≈ 3 practice exams
Duration
120 minutes
Passing Score
65%
Difficulty
FoundationalLast Updated
Feb 2026
Use this Blockchain-Fund practice exam to prepare for Blockchain Fundamentals Certificate with realistic questions, detailed explanations, and focused study modes. The practice bank includes 599 questions for ISACA Blockchain-Fund, so you can review the exam steadily instead of relying on one long cram session.
As you practice, pay extra attention to patterns in your missed answers. Start with short sessions to identify weak areas, then move into timed quizzes once your accuracy is consistent.
The explanations are especially useful when you want to connect exam wording to the responsibilities and scenarios described in the official certification guidance. Use the free preview first, then unlock the full question bank when you are ready to build a complete study routine.
The ISACA Blockchain Fundamentals Certificate validates foundational knowledge of blockchain technology across two core domains: Blockchain Concepts (67% of the exam) and Blockchain Usage and Considerations (33%). The credential covers blockchain history, underlying principles, architectural models, infrastructure, interoperability, tokenization, cryptocurrencies, and major blockchain platforms. It is part of ISACA's Certified in Emerging Technology (CET) program, alongside three other emerging technology certificates, and completing all four is a pathway to earning the full CET certification.
The exam blends traditional multiple-choice knowledge questions with performance-based questions set in a virtual lab environment, giving candidates hands-on exposure to core concepts such as encryption, proof-of-work consensus, and blockchain creation. ISACA designed this credential as an entry point for professionals and learners seeking to validate and signal blockchain literacy in a market where enterprise blockchain adoption continues to expand across industries including finance, supply chain, and healthcare.
This certificate is designed for students, recent graduates, and early-career IT professionals who are new to blockchain technology and want to establish foundational credibility in the space. It is equally relevant for business analysts, project managers, auditors, and IT generalists who work adjacent to blockchain initiatives and need a structured understanding of how the technology functions and where it can be applied.
Teams looking to upskill collectively and organizations adopting or evaluating blockchain solutions also represent a core audience. Because there are no prerequisites, anyone with a general interest in blockchain—regardless of prior technical background—can pursue this credential as a first step toward deeper specialization.
There are no formal prerequisites for the Blockchain Fundamentals Certificate. ISACA imposes no minimum experience, prior certifications, or educational requirements. Candidates can register at any time and schedule their exam as early as 48 hours after completing payment.
While no prerequisites are required, familiarity with basic IT concepts—such as networking fundamentals, cryptography basics, and general software architecture—will help candidates engage more effectively with the material. ISACA offers a self-guided online course, a virtual lab package, and a study guide specifically designed to bring candidates up to speed on all tested domains before sitting the exam.
The Blockchain Fundamentals exam is administered as a fully online, remotely proctored, computer-based test with a 2-hour (120-minute) time limit. The exam blends two question formats: standard multiple-choice knowledge questions (each with four answer choices) and performance-based questions delivered within a virtual lab environment. No penalties are applied for incorrect answers—the final score is based solely on the total number of correct responses, so candidates should answer every question.
The passing score is 65% or higher. Candidates are allowed up to four attempts within a rolling 12-month eligibility period. Registration is continuous with no application windows or deadlines, and exam eligibility remains valid for 12 months from the date of registration. The exact total number of questions is not publicly disclosed by ISACA.
Earning the Blockchain Fundamentals Certificate signals verified, vendor-neutral blockchain literacy backed by ISACA—a globally recognized IT governance and assurance body. It is particularly valuable as a credentialing stepping stone: the certificate counts toward ISACA's Certified in Emerging Technology (CET) designation, which also requires certificates in AI Fundamentals, IoT Fundamentals, and Cloud Fundamentals. Holding the CET demonstrates breadth across multiple emerging technology domains, which is increasingly valued by employers building cross-functional digital transformation teams.
For professionals in audit, risk, compliance, and IT governance roles, the credential provides the technical vocabulary needed to assess blockchain projects and communicate with implementation teams. While entry-level blockchain knowledge alone does not command a significant salary premium, it serves as a differentiator for professionals pivoting into blockchain development, consulting, or enterprise architecture roles—where specialized knowledge of platforms, consensus mechanisms, and deployment considerations is directly applicable.
5 sample questions with answers and explanations. The full bank has 599 questions, enough for 3 full-length practice exams.
Preview — answers shown1. An Ethereum transaction specifies max_fee_per_gas of 150 gwei and max_priority_fee_per_gas of 3 gwei. The current block has a base_fee of 120 gwei. What is the actual priority fee paid to the validator? (Select one!)
Explanation
The actual priority fee paid is 3 gwei. Under EIP-1559, the effective priority fee equals the minimum of max_priority_fee_per_gas and the difference between max_fee_per_gas and base_fee. The calculation is min(3, 150-120) = min(3, 30) = 3 gwei. The validator receives only the priority fee while the base fee of 120 gwei is burned. 30 gwei represents the maximum possible priority fee based on the spread between max fee and base fee, but the user specified only 3 gwei as their tip. 120 gwei is the base fee which is burned, not paid to validators. 150 gwei is the max fee, not what is actually paid.
2. A Bitcoin transaction contains 2 inputs totaling 0.5 BTC and creates 2 outputs: 0.3 BTC to the recipient and 0.19 BTC back to the sender as change. What is the implied transaction fee paid to miners? (Select one!)
Explanation
In Bitcoin's UTXO model, transaction fees are implicit rather than explicit fields. Fees equal the difference between total input values and total output values. This transaction consumes 0.5 BTC in inputs and creates 0.3 BTC plus 0.19 BTC equals 0.49 BTC in outputs. The remaining 0.5 minus 0.49 equals 0.01 BTC becomes the transaction fee collected by the miner who includes the transaction in a block through the coinbase transaction. Miners prioritize transactions by fee rate measured in satoshis per virtual byte, creating a fee market where users bid for block space. If output values exceeded input values, the transaction would be invalid and rejected by nodes. This implicit fee mechanism requires careful output calculation to avoid accidentally overpaying or creating invalid transactions.
3. A blockchain network implements Byzantine fault tolerance using the formula n = 3f + 1 to determine node requirements. If the network must tolerate up to 5 Byzantine (malicious) nodes, how many total nodes are required? (Select one!)
Explanation
The Byzantine fault tolerance formula n = 3f + 1 determines the minimum total nodes needed to tolerate f faulty nodes. With f = 5, the calculation is n = 3(5) + 1 = 16 nodes. This formula ensures that even with 5 malicious nodes, the remaining 11 honest nodes form a majority capable of achieving consensus. BFT systems require more than two-thirds honest nodes (approximately 67%) to function correctly. With 11 nodes, the network can tolerate only 3 Byzantine faults. With 15 nodes, only 4 Byzantine faults are tolerable. With 21 nodes, 6 Byzantine faults would be tolerable, exceeding requirements unnecessarily.
4. A blockchain network experiences consistent 100 percent block fullness for six consecutive blocks. The initial base fee is 100 gwei. Assuming maximum base fee increases per block, what will the approximate base fee be after these six blocks? (Select one!)
Explanation
The base fee will be approximately 201 gwei after six blocks of maximum increases. EIP-1559 allows a maximum 12.5 percent base fee increase per block when blocks are 100 percent full. The formula compounds: Block 1: 100 × 1.125 = 112.5, Block 2: 112.5 × 1.125 = 126.6, Block 3: 142.4, Block 4: 160.2, Block 5: 180.2, Block 6: 202.7 (approximately 201). The increase is exponential, not linear. 112.5 gwei represents only one block's increase. 150 gwei and 175 gwei underestimate the compounding effect of six consecutive maximum increases.
5. A blockchain platform uses SHA-256 hash functions. A developer finds two different transaction inputs that produce hash outputs differing in only 3 bits. What cryptographic property has potentially failed? (Select one!)
Explanation
The avalanche effect has failed. This property requires that minimal input changes produce dramatically different outputs with approximately 50 percent of bits changing. Two different inputs producing outputs differing by only 3 bits out of 256 violates the avalanche effect. The deterministic property ensures identical inputs produce identical outputs and remains intact. Preimage resistance prevents reversing hashes to find original inputs, unrelated to output similarity from different inputs. Fixed output size determines hash length consistency, not output differences.
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