Certification exams change, and study material that was accurate last year can quietly fall behind. TestsDumps keeps the CBDE question bank current with 365 days of free updates, so the 102 questions you study in 2026 reflect the exam as it stands now.
Blockchain CBDE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Web3 and dApp Integration | - Web3.js integration - Decentralized application architecture |
| Topic 2: Solidity Programming | - Solidity language fundamentals - Error handling and events - Smart contract development |
| Topic 3: Development Tools and Testing | - Unit testing and deployment strategies - Use of development tools (e.g., Remix, Truffle) |
| Topic 4: Ethereum Fundamentals and Architecture | - Gas and transaction fee mechanics - Ethereum blockchain basics - Ethereum Virtual Machine (EVM) |
| Topic 5: Smart Contract Security | - Common vulnerabilities - Secure coding best practices |
CBDE Exam FAQ: What Candidates Ask Most
The Blockchain BTA Certified Blockchain Developer - Ethereum (exam code CBDE) is the exam you pass to earn the Blockchain Developer - Ethereum certification, a credential at the Professional level. It is also connected with related credentials such as Certified Blockchain Developer - Hyperledger Fabric (CBDH), Certified Blockchain Solution Architect (CBSA), Other BTA Blockchain Developer Certifications. If you are mapping out a certification path with Blockchain, this exam is a milestone worth planning around.
The CBDE exam includes 70 questions, and you have 90 minutes to complete them. With that many questions on the clock, pacing is part of the challenge: divide your time into rough blocks as you go, and flag the items that stall you so you can circle back at the end instead of burning minutes on a single question. A week or two before your exam date, sit at least one full timed session in the TestsDumps test engine under the same time limit, so the pace feels familiar rather than frantic on the day.
You need 70% to pass the CBDE exam, and the official registration fee is USD 275. That fee is due again in full for every retake, which makes thorough preparation the cheaper investment by far. Before you book your seat, test yourself with the TestsDumps practice questions until you are scoring comfortably above the passing mark on a consistent basis — it is the simplest way to avoid paying for the same exam twice.
No formal prerequisites; recommended experience with programming and basic blockchain concepts.
Eligibility rules can be adjusted by Blockchain over time, so before you register, confirm the current requirements on the official exam page: view the official CBDE exam information.
Yes. TestsDumps offers a free PDF demo of the CBDE practice questions, so you can judge the quality of the material firsthand before paying anything. Every purchase also includes 365 days of free updates — if Blockchain changes the exam during that year, your material changes with it. And when the free update period expires, you can extend it at a 50% discount from within your member zone.
Every CBDE purchase at TestsDumps is backed by a 100% Money Back Guarantee: if you take the corresponding exam within 60 days of your purchase and do not pass, you can apply for a full refund. The guarantee has clear conditions — it does not apply if you sit the exam within 3 days of purchase, if you downloaded the material but never actually took the exam, or to free materials and expired orders, and the candidate name must match the payer name. To file a claim, send a scan of your exam enrollment slip together with your official Score Report PDF within 2 days of the exam; claims are processed within 7 days. If you would rather not take a refund, you can exchange the product instead and receive two additional exam preparation products of equal value for free, while your original product keeps its update service. Delivery itself is instant: your material is available for download right after payment and is also sent to your email within one minute — if it has not arrived within 2 hours, contact our customer service. There is no limit on how many computers you can install it on.
The official Blockchain BTA Certified Blockchain Developer - Ethereum outline divides the exam content into 5 main domains. The first three are:
- Solidity Programming
- Web3 and dApp Integration
- Ethereum Fundamentals and Architecture
That is only the headline view — scroll back up to the Exam Topics section on this page for the complete domain-by-domain breakdown before you plan your study schedule.
Blockchain BTA Certified Blockchain Developer - Ethereum Sample Questions:
View and Pure Functions:
- A. a view function can access state variables, but not write to them. A Pure function cannot modify or read from state.
- B. a function marked as pure can change the state, while a view function can only return static calls.
- C. a function marked as view can never access state variables, while pure functions are here to return only one value.
Correct Answer: A 🗳️
To generate a random number:
- A. it's good to use the RANDAO smart contract.
- B. it's not possible to have a random number in a deterministic environment such as the Ethereum blockchain.
- C. it's good to use the block timestamp, as this is always different.
- D. it's good to use the block hash as this is clearly always very different.
Correct Answer: A 🗳️
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.
Correct Answer: C 🗳️
Using selfdestruct(beneficiary) with the beneficiary being a contract without a payable fallback function:
- A. it's impossible to secure a contract against receiving ether, because selfdestruct will always send ether to the address in the argument. This is a design decision of the Ethereum platform.
- B. selfdestruct doesn't send anything to a contract, it just re-assigns the owner of the contract to a new person. Sending ether must be done outside of selfdestruct.
- C. will throw an exception, because the fallback function is non-payable and thus cannot receive ether.
Correct Answer: A 🗳️
Using truffle-contract over Web3.js:
- A. is a must for every developer, because Web3.js changes so often.
- B. is a convenient way because Web3.js is currently still in beta and truffle-contract can handle transactions with JavaScript-promises.
- C. they are both completely different things. Truffle-Contract is a framework while Web3.js is a library.
Correct Answer: B 🗳️
Viewing page 1 out of 21 pages.
Viewing questions 1-5 out of 102 questions.
Yves 
Nelson 
Caesar 
Beacher 
Patricia 
Geoffrey 
Benedict 
Lynn 
Kent 
Hiram 
Laurel 
Kimberley 
Ansel 
Nicole 
Arno 
Leonard 
Jerry 
Florence 
Adelaide 
Harley 
