Earning the Blockchain BTA Certified Blockchain Developer - Ethereum credential tells employers you can work with Blockchain technologies at a professional level. Prepare for the CBDE exam in 2026 with the 102 expert-prepared practice questions from Actual4Exams.
Blockchain CBDE Exam Overview:
| Certification Vendor: | Blockchain Training Alliance (BTA) |
|---|---|
| Exam Name: | BTA Certified Blockchain Developer - Ethereum |
| Exam Number: | CBDE |
| Exam Format: | Multiple Choice, Multiple Response |
| Available Languages: | English |
| Certificate Validity Period: | 2 years |
| Exam Duration: | 90 minutes |
| Related Certifications: | Certified Blockchain Developer - Hyperledger Certified Blockchain Solution Architect |
| Passing Score: | 70% |
| Exam Price: | $300 USD |
| Real Exam Qty: | 70 |
| Recommended Training: | CBDE Official Study Guide |
| Exam Registration: | BTA Official Registration |
| Sample Questions: |  |
| Exam Way: | Online proctored exam via BTA student portal |
| Pre Condition: | Recommended: Basic programming knowledge, familiarity with JavaScript, C++, or Python, understanding of blockchain fundamentals |
| Official Syllabus URL: | https://blockchaintrainingalliance.com/collections/certifications/products/cbde |
Blockchain CBDE Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Solidity Programming | 30% | - Solidity syntax and data types - Inheritance, interfaces, and libraries - Functions, modifiers, and visibility - Smart contract design patterns - Events, errors, and exceptions |
| ERC Standards & Tokenization | 20% | - Token economics and best practices - ERC-721 Non-Fungible Tokens (NFTs) - ERC-1155 Multi-Token Standard - ERC-20 Fungible Tokens |
| DApp Development & Deployment | 20% | - Decentralized storage: IPFS - Smart contract testing and debugging - Frontend integration patterns - Development tools: Truffle, Hardhat, Ganache - Deployment to testnets and mainnet |
| Ethereum Architecture & EVM | 20% | - Gas mechanics, fees, and optimization - Ethereum Virtual Machine (EVM) fundamentals - Transactions and message calls - Ethereum network and node structure - Accounts, addresses, and state model |
| Web3 Integration & Security | 10% | - Common vulnerabilities and mitigation - Secure coding practices - Contract upgradability and maintenance - Web3.js and Ethers.js usage |
Blockchain BTA Certified Blockchain Developer - Ethereum (CBDE) — Questions Candidates Actually Ask
The CBDE exam, officially known as Blockchain BTA Certified Blockchain Developer - Ethereum, is the Blockchain test that leads to the Certified Blockchain Developer - Ethereum certification at the Professional level. Passing it validates the skills employers expect from a certified professional. It is also associated with related credentials such as Certified Blockchain Developer - Hyperledger, Certified Blockchain Solution Architect.
The CBDE exam contains 70 questions, and you have 90 minutes to complete them. Work out your per-question pace before test day, and flag slow items instead of stalling on them — time pressure, not knowledge, sinks many first attempts. Timed mock exams in the Actual4Exams test engines are the most reliable way to build that rhythm.
The passing score for the CBDE exam is 70%, and the official registration fee is $300 USD. If you miss the mark, a retake means paying the full fee again, so book your seat only when you are ready. A practical benchmark: score consistently above the passing line on timed practice tests before scheduling the real exam.
Recommended: Basic programming knowledge, familiarity with JavaScript, C++, or Python, understanding of blockchain fundamentals
Entry requirements can change, so confirm the latest conditions on the official exam page: https://blockchaintrainingalliance.com/collections/certifications/products/cbde.
You can book the CBDE exam through the official registration channels below:
Exam delivery: Online proctored exam via BTA student portal. Seats at popular test centers fill quickly, so schedule early once your preparation is on track.
Blockchain recommends the following training options for Blockchain BTA Certified Blockchain Developer - Ethereum candidates:
Pair any course with the 102 practice questions from Actual4Exams to measure how ready you really are before paying the exam fee.
Yes. A free PDF demo of the Blockchain BTA Certified Blockchain Developer - Ethereum questions is available, so you can check the question style and answer quality before you pay. Every purchase also includes 365 days of free updates, and if the product expires you can renew the update service at a 50% discount from your member zone.
If you take the corresponding CBDE exam within 60 days of purchase and do not pass, you can apply for a full refund under the 100% Money Back Guarantee: submit a scan of your enrollment slip and your official Score Report (PDF) within 2 days of the exam date, and the claim is processed within 7 days. Attempts made within 3 days of purchase, downloads without an actual exam attempt, free materials, and expired orders are not eligible, and the candidate name must match the payer name. Prefer new material instead of a refund? You can exchange your purchase for two free products of equal value and keep the update service on your original product. As for delivery, the files are available for instant download and are also emailed to you within one minute of payment — if nothing arrives within 2 hours, contact customer service. There is no limit on how many computers you can install the product on.
The official Blockchain BTA Certified Blockchain Developer - Ethereum outline is organized into 5 domains. The first three are:
- ERC Standards & Tokenization — 20% of the exam
- DApp Development & Deployment — 20% of the exam
- Web3 Integration & Security — 10% of the exam
See the complete exam topics section above for the full outline and the weighting of every domain.
Blockchain BTA Certified Blockchain Developer - Ethereum Sample Questions:
The nonce-field in a transaction is used:
- A. to have an additional checksum for transactions.
- B. to protect against replay attacks.
- C. to sum up all ethers sent from that address.
The difference between address.send() and address.transfer() is:
- A. .send returns a Boolean and .transfer throws an exception on error. .send is considered dangerous, because it sends all gas along, while .transfer only sends the gas stipend of 2300 gas along
- B. .send returns a Boolean and .transfer throws an exception on error. Both just forward the gasstipend of 2300 gas and are considered safe against re-entrancy.
- C. .send and .transfer are both considered low-level functions which are dangerous, because they send all gas along. It's better to use address.call.value()() to control the gas-amount.
- D. .send throws an exception and .transfer returns a Boolean on error. Both just forward the gasstipend of 2300 gas and considered safe against re-entrancy
Hashing Mining uses:
- A. the Dagger-Hashimoto hashing while internally the EVM uses SHA256 which is an alias for Keccack256.
- B. the Dagger-Hashimoto hashing while internally the EVM uses Keccack256 which is almost similar to SHA256, but has a different padding so produces different hashes.
- C. Keccack256 while internally to hash values it's easy to use the Dagger-Hashimoto to create a meaningful hash.
Solidity files:
- A. can be split across multiple files, but every contract must be in a file with the same name as the contract itself.
- B. can't be split across multiple files, everything should be in one single file.
- C. can be spread across multiple files. To import all contract from a file you can use "import 'myfile.sol'. To import Contract MyContract from myfile.sol you use "import {MyContract as SomeContract} from 'myfile.sol';".
DApps are:
- A. great, because they cut the middle man, run on a trusted platform, apply logic to the blockchain where already economic assets are running and thus allow peer to peer trade.
- B. a new way of applying logical operations for banks and big financial institutions. This way they can reduce the staff while operating at increased security.
- C. an amazing way to create new applications. Those applications run entirely separated from other applications on the platform and allow for logical interactions. They can't access any funds to add an additional layer of trust.
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We still understand the effort, time, and money you will invest in preparing for your certification exam, which makes failure in the Blockchain CBDE exam really painful and disappointing. Although we cannot reduce your pain and disappointment but we can certainly share with you the financial loss.
This means that if due to any reason you are not able to pass the CBDE actual exam even after using our product, we will reimburse the full amount you spent on our products. you just need to mail us your score report along with your account information to address listed below within 7 days after your unqualified certificate came out.
