Save your money and your time without gambling on quality. TestValid's CBDE bank is written by professional experts and certified trainers, previewable by free demo, and updated free for 365 days — Blockchain BTA Certified Blockchain Developer - Ethereum prep that respects both in 2026.
Blockchain CBDE Exam Overview:
| Certification Vendor: | Blockchain Training Alliance |
|---|---|
| Exam Name: | Blockchain Training Alliance Certified Blockchain Developer - Ethereum (CBDE) Exam |
| Exam Number: | CBDE |
| Available Languages: | English |
| Exam Format: | Multiple Choice |
| Related Certifications: | Certified Blockchain Solutions Architect (CBSA) |
| Recommended Training: | Blockchain Training Alliance CBDE Training |
| Exam Registration: | Blockchain Training Alliance Certification Registration |
| Sample Questions: |  |
| Exam Way: | Online proctored exam |
| Pre Condition: | Recommended understanding of blockchain concepts and basic Ethereum development experience. |
| Official Syllabus URL: | https://blockchaintrainingalliance.com/certifications/cbde |
Blockchain CBDE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Smart Contracts Development | - Solidity programming fundamentals - Contract structure, functions, and modifiers |
| DApp Development | - Web3 integration - Frontend interaction with smart contracts |
| Development Tools & Frameworks | - Truffle, Hardhat, and testing frameworks - Deployment and migration workflows |
| Ethereum Fundamentals | - Blockchain architecture and Ethereum ecosystem - Accounts, transactions, and gas model |
| Security and Best Practices | - Secure coding practices - Smart contract vulnerabilities |
CBDE Exam Details and Our Commitments
The Blockchain BTA Certified Blockchain Developer - Ethereum blueprint is organized into these principal domains:
- Security and Best Practices
- DApp Development
- Smart Contracts Development
Additional domains follow in the full official outline, and our bank spans them all.
Blockchain recommends these official training options:
If formal classes fit your budget and calendar they add structure; otherwise, disciplined self-practice with a current bank covers the same ground.
A team of professional IT experts and certified trainers who focus on this exam field — and who keep the CBDE bank under constant updating so every candidate prepares smoothly. Every answer is expert-verified, and you can check the accuracy yourself with a free demo before buying. The online test engine deserves special mention: it simulates the actual test environment, supports Windows, Mac, Android, and iOS, carries no installation limits, and lets you practice without limits of time or location — a smooth preparation process for office workers who cannot attend classes.
Upon successful payment, our system automatically sends the product to your mailbox — typically within about a minute — with an instant download link on screen. If nothing arrives within two hours, check your spam folder and contact support. Once purchased, updates are free for 365 days: whenever a new version is released, the updated CBDE bank is sent to your email immediately. A 50% renewal discount applies after the period ends.
Blockchain specifies the following prerequisites for the Blockchain BTA Certified Blockchain Developer - Ethereum: Recommended understanding of blockchain concepts and basic Ethereum development experience..
Verify the details on the official certification page before registering.
Documented and honored. If you fail the corresponding exam within 60 days of purchase, send a scanned copy of your enrollment slip and your official Score Report PDF within two days of the exam date; verified claims are refunded in full within seven days. Exclusions: exams taken within three days of purchase, candidate names that differ from the payer, and free or expired products. If you have another exam in mind, you can instead exchange your product for two others of equal value at no charge.
Registration runs through the official channels below:
Choose a test center or online appointment, and book early to keep your preparation timeline comfortable.
Blockchain BTA Certified Blockchain Developer - Ethereum Sample Questions:
When a smart contract pays out money:
- A. it's good to use a push over a pull method.
- B. it's good to use only pull and no push method.
- C. it's good to use a push and a pull method to ensure that participants can get their money no matter the contract state. In addition to and pushing it should contain a withdraw method.
Correct Answer: C 🗳️
A Struct is a great way:
- A. to define a new datatype in Solidity, so you don't need to use objects of another contract.
- B. to implement pointers to other contracts that can hold new datatypes.
- C. to hold instances of other contracts.
Correct Answer: A 🗳️
Using selfdestruct(beneficiary) with the beneficiary being a contract without a payable fallback function:
- A. will throw an exception, because the fallback function is non-payable and thus cannot receive ether.
- 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. 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.
Correct Answer: C 🗳️
If you are starting a new ERC20 token:
- A. best is to start with an audited implementation, for example from OpenZeppelin, in order to reuse already existing code.
- B. it is beneficial to copy and paste the already existing code from the Ethereum wiki and modify this until you like it.
- C. it would be best to start from scratch, just looking at the required interface.
Correct Answer: A 🗳️
When defining a new datatype:
- A. it's not possible to generate new datatypes in Solidity.
- B. it's best to use a struct, which is cheaper than deploying a new contract.
- C. its best to use a contract with public storage variables, so it can be used like a class.
Correct Answer: B 🗳️
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