Exam Name: BTA Certified Blockchain Developer - Ethereum
Certification Provider: Blockchain
Corresponding Certification: Blockchain Developer - Ethereum
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Updated: Nov 08, 2026
No. of Questions: 102 Questions & Answers with Testing Engine
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Blockchain CBDE Exam Overview:
| Certification Vendor: | Blockchain Training Alliance |
|---|---|
| Exam Name: | Blockchain Training Alliance Certified Blockchain Developer - Ethereum (CBDE) Exam |
| Exam Number: | CBDE |
| Exam Format: | Multiple Choice |
| Related Certifications: | Certified Blockchain Solutions Architect (CBSA) |
| Available Languages: | English |
| Recommended Training: | Blockchain Training Alliance CBDE Training |
| Exam Registration: | Blockchain Training Alliance Certification Registration |
| Sample Questions: | DOWNLOAD DEMO |
| 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 |
|---|---|
| Ethereum Fundamentals | - Blockchain architecture and Ethereum ecosystem - Accounts, transactions, and gas model |
| Development Tools & Frameworks | - Truffle, Hardhat, and testing frameworks - Deployment and migration workflows |
| DApp Development | - Web3 integration - Frontend interaction with smart contracts |
| Security and Best Practices | - Smart contract vulnerabilities - Secure coding practices |
| Smart Contracts Development | - Solidity programming fundamentals - Contract structure, functions, and modifiers |
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Registration is available through the official channels below:
Booking a realistic date — one that leaves room for several mock exam sessions — turns exam pressure into a structured countdown.
According to the official outline, the CBDE exam covers weighted domains including:
- Ethereum Fundamentals ()
- Smart Contracts Development ()
- DApp Development ()
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Recommended understanding of blockchain concepts and basic Ethereum development experience.
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Blockchain BTA Certified Blockchain Developer - Ethereum Sample Questions:
Events:
- A. are stored on chain and are a great way to get a return value when a contract calls another contract.
- B. are stored in something like a side-chain and cannot be accessed by contracts.
- C. are used primarily for debugging exceptions in solidity.
Correct Answer: B 🗳️
Address.Call vs. Address.Delegatecall:
- A. Address.delegatecall() is used for calling other contracts using the scope of the called contract in terms of storage variables. Address.call() is used for libraries, which uses the storage variables of the contract who called. Libraries are a great way to re-use already existing code and call() can make sure that no storage is used from the library, instead it looks like the code is directly copied into the calling contract.
- B. Address.call() is used for calling other contracts using the scope of the called contract in terms of storage variables. Address.delegatecall() is used for libraries, which uses the storage variables of the contract who called. Libraries are a great way to re-use already existing code and delegatecall can make sure that no storage is used from the library, instead it looks like the code is directly copied into the calling contract.
Correct Answer: B 🗳️
According to the official Style Guide:
- A. contract should be mixedCase, as well as function names. Events should be capitalized. 2 spaces should be used as indentation and a maximum of 120 characters per line.
- B. contract names should be capitalized, while functions should be mixedCase. You should use 4 spaces as indentation and a maximum of 79 (or 99) characters per line.
- C. you should capitalize function names, events and contract names, to avoid confusion with JavaScript. You should use Tabs to indentation and a maximum of 80 characters per line.
Correct Answer: B 🗳️
The following are value types in Solidity.
- A. Integer, Boolean, Structs and Fixed Point Numbers.
- B. Integer, Boolean, Struct, Mapping and Enum.
- C. Integer, Boolean, Enum and Addresses.
Correct Answer: C 🗳️
A Hashing Algorithm is deterministic. What does it mean?
- A. it shouldn't be possible to re-generate the input given the output.
- B. it always produces the same output given the same input.
- C. it uses equally distributed data to produce the output given a long input.
Correct Answer: B 🗳️
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