EC-COUNCIL

EC-Council Blockchain Developer Certification

BDC

The EC-Council Blockchain Developer Certification (BDC) validates your ability to build secure, scalable blockchain applications across Web3 and enterprise ecosystems. You'll master smart contracts, dApps, and multi-platform development on Ethereum, Hyperledger Fabric, and R3 Corda, with a strong emphasis on security-first practices and AI-enhanced development. This hands-on, lab-intensive program prepares you for in-demand roles like blockchain developer, Web3 developer, and smart contract engineer.

Practice Free Questions

9Domains

57Objectives

527Practice pages

2530Free questions

BDC free practice questions

Choose any objective and open any question page — no sign-in required.

Blockchain Technology Concepts and Distributed Ledger Technology (DLT)

46 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–46

Blockchain Ecosystem and Use Cases

50 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50

Blockchain Architecture, Node Infrastructure, and Types

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Data and Transaction Flow in Blockchain

51 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–51

Network Communication and Protocol Layers

47 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–47

Governance, Upgrades, and Forks

50 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50

Blockchain Scaling Solutions

62 questions · 13 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–60 61–62

Cryptographic Principles

37 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–37

Symmetric Cryptography and Key Algorithms

40 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40

Asymmetric Cryptography and Key Algorithms

44 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–44

Cryptographic Hash Functions and Their Uses

53 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–53

Advanced Cryptographic Mechanisms

31 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–31

Merkle Tree-Based Transaction Verification

40 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40

Bitcoin and Bitcoin Blockchain Architecture

49 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–49

Bitcoin Network and Its Transactions

42 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–42

Bitcoin Mining, Forking, and Scalability Solutions

54 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–54

Proof of Work (PoW) and Its Variations

37 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–37

Proof of Stake (PoS) and Derivative Protocols

46 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–46

Byzantine Fault Tolerant (BFT) Mechanisms

35 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35

Alternative and Hybrid Consensus Mechanisms

38 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–38

Cryptomining and the Mining Ecosystem

52 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–52

Mining Techniques

48 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–48

Tokenization

32 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–32

Types of Tokens and Digital Assets

36 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–36

Token Issuance, Token Economics, and Market Dynamics

43 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–43

Use Cases and Future Trends in Tokenization

36 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–36

Ethereum's Purpose, Ecosystem, and Evolution

42 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–42

Ethereum Virtual Machine

43 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–43

Ethereum's Transactions, Validation, and Upgrades

41 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–41

Solidity Concepts for Contract Development

30 questions · 6 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30

Ethereum Standards and Proposal Processes

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Contract Lifecycle: Design, Development, and Deployment

40 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40

Testing, Debugging, and Auditing Contracts

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Blockchain Development Frameworks (Truffle, Hardhat)

51 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–51

Blockchain IDEs and Plugins

39 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–39

Blockchain Deployment and Monitoring Tools

43 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–43

Web 3.0 Ecosystem and Components

50 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50

Building User-Friendly dApp Interfaces

52 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–52

Deploy and Manage dApps

40 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40

Attack Surfaces in Blockchain Ecosystems

47 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–47

Network Layer, Consensus, Smart Contract, and Node Security Best Practices

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Auditing, Testing, and Monitoring in Blockchain Security

52 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–52

Incident Response and Risk Mitigation

51 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–51

DeFi Protocols and Their Financial Functions

51 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–51

DeFi Smart Contracts and Governance

42 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–42

Hyperledger Fabric Architecture and Network Creation

59 questions · 12 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–59

Chaincode Development, Deployment, and Lifecycle Management

34 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–34

R3 Corda Architecture and Network Design

33 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–33

CorDapp Development and Lifecycle

38 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–38

Enterprise Blockchain Platforms and Industry-Specific Use Cases

30 questions · 6 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30

Blockchain Business Models and ROI

50 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50

Architectural and Protocol Innovations

33 questions · 7 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–33

Consensus and Scalability Innovations

55 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55

Privacy and Zero-Knowledge Innovations

38 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–38

Interoperability Innovations

54 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–54

Blockchain Integration with Emerging Technologies

73 questions · 15 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–60 61–65 66–70 71–73

Quantum Computing and Blockchain

40 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40

Want a smarter study session?Try adaptive questions aimed at your weak spots, the illustrated book, and readiness you can trust.

Continue Free Practice

Percentages reflect share of the current practice bank, not official exam weightings. Every page above is a live, crawlable practice page (57 objectives · 527 pages).

EC-Council Blockchain Developer Certification

BDC free practice questions

Domain 1 · Blockchain Fundamentals and Architecture14% of practice bank · 7 objectives · 351 questions14%

Domain 2 · Cryptography and Security Foundations10% of practice bank · 6 objectives · 245 questions10%

Domain 3 · Bitcoin and Consensus Mechanisms12% of practice bank · 7 objectives · 301 questions12%

Domain 4 · Cryptomining, Tokenization, and Digital Assets10% of practice bank · 6 objectives · 247 questions10%

Domain 5 · Ethereum and Smart Contract Development11% of practice bank · 7 objectives · 286 questions11%

Domain 6 · Development Tools, Web3, and dApps11% of practice bank · 6 objectives · 275 questions11%

Domain 7 · Blockchain Security and DeFi Development11% of practice bank · 6 objectives · 288 questions11%

Domain 8 · Enterprise Blockchain Platforms10% of practice bank · 6 objectives · 244 questions10%

Domain 9 · Advanced Concepts and Future Innovations12% of practice bank · 6 objectives · 293 questions12%