Free CBDE: BTA Certified Blockchain Developer - Ethereum Exam Questions and Answers
BTA Certified Blockchain Developer - Ethereum is one of the Blockchain tests covered here, sat under the code CBDE. These certificates come from separate for-profit training companies rather than a standards body or industry consortium — despite the institutional-sounding names, neither Blockchain Council nor 101 Blockchains is a regulator, and neither holds ISO/IEC 17024 accreditation. Exams are online multiple choice taken without proctoring.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 6, 2026
- Exam code
- CBDE
- Provider
- Blockchain
- Questions in our bank
- 1000+
- Free to read
- First 10, with answers
- Official page
- Official Exam website
- Our test mode duration & pass mark
- 130 mins · 70%
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Question #1
What is the main purpose of a smart contract in the Ethereum blockchain?
Please select an optionIncorrectCorrect answer: D
Smart contracts automate agreements by executing predefined terms without the need for intermediaries.
Was this answer correct?Question #2
In which programming language are Ethereum smart contracts primarily written?
Please select an optionIncorrectCorrect answer: D
Solidity is the primary programming language used for developing smart contracts on the Ethereum blockchain.
Was this answer correct?Question #3
Which Ethereum improvement proposal introduced the concept of ERC-20 tokens?
Please select an optionIncorrectCorrect answer: D
EIP-20 defines the standards for fungible tokens on the Ethereum blockchain, allowing for easier integration and transfers.
Was this answer correct?Question #4
How does the Ethereum Virtual Machine (EVM) contribute to the blockchain?
Please select an optionIncorrectCorrect answer: D
The EVM is responsible for executing smart contracts and ensuring that the outcomes are valid across different nodes in the network.
Was this answer correct?Question #5
What does gas in Ethereum refer to?
Please select an optionIncorrectCorrect answer: B
Gas is a unit that measures the amount of computational effort required to execute operations on the Ethereum network.
Was this answer correct?Question #6
What is the role of miners in the Ethereum network?
Please select an optionIncorrectCorrect answer: C
Miners validate transactions and add them to the blockchain, ensuring the integrity and security of the network.
Was this answer correct?Question #7
Which token standard allows for the creation of non-fungible tokens (NFTs) on Ethereum?
Please select an optionIncorrectCorrect answer: A
ERC-721 is a token standard for creating non-fungible tokens (NFTs) that represent unique assets on the blockchain.
Was this answer correct?Question #8
What characteristic of blockchain makes it resistant to tampering?
Please select an optionIncorrectCorrect answer: B
Digital signatures ensure that transactions cannot be altered after they are added to the blockchain, enhancing security and integrity.
Was this answer correct?Question #9
In the context of decentralized applications (dApps), what does "decentralized" refer to?
Please select an optionIncorrectCorrect answer: B
Decentralized means that no single entity controls the application; instead, it operates on a network of nodes in a peer-to-peer fashion.
Was this answer correct?Question #10
What is the total supply of Ether (ETH) as of the current year, 2023?
Please select an optionIncorrectCorrect answer: C
Ether (ETH) does not have a fixed total supply, allowing for continuous issuance through mining, making it uncapped.
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Other Blockchain certifications
- Certified Metaverse Professional (CMP) - 101 Blockchains (opens in a new tab)
- Certified Blockchain Developer™ - Blockchain Council (opens in a new tab)
- Certified Web3 Professional (CW3P) - 101 Blockchains (opens in a new tab)
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FAQ
Learn More: https://www.blockchain-council.org/blockchain-certification/
- Q1: What is the CBDE: BTA Certified Blockchain Developer - Ethereum exam?
- A: CBDE: BTA Certified Blockchain Developer - Ethereum is a Blockchain certification exam. Judging by the questions in our bank, it concentrates on ethereum, blockchain, smart, consensus and contracts.
- Q2: What topics does the CBDE: BTA Certified Blockchain Developer - Ethereum exam cover?
- A: Questions in our CBDE: BTA Certified Blockchain Developer - Ethereum bank cluster around ethereum, blockchain, smart, consensus, contracts, miners, tokens and decentralized. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for CBDE: BTA Certified Blockchain Developer - Ethereum?
- A: Work through the CBDE: BTA Certified Blockchain Developer - Ethereum practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real CBDE: BTA Certified Blockchain Developer - Ethereum exam questions?
- A: They are drawn from officially released past questions and from community members who have sat CBDE: BTA Certified Blockchain Developer - Ethereum. Answers are verified and updated weekly.
- Q5: Where do I register for the CBDE: BTA Certified Blockchain Developer - Ethereum exam?
- A: Register through Blockchain directly at https://www.blockchain-council.org/blockchain-certification/. Exampractice is not affiliated with Blockchain and does not administer the exam.
- Q6: Is there a free CBDE: BTA Certified Blockchain Developer - Ethereum sample?
- A: Yes. Every CBDE: BTA Certified Blockchain Developer - Ethereum page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are Blockchain Certification Exams?
- A: Blockchain Certification Exams validate your expertise in blockchain technology, covering areas such as blockchain development, architecture, security, and business applications. These certifications demonstrate your proficiency in utilizing blockchain for various industry solutions.
- Q8: Why should I pursue Blockchain Certification?
- A: Blockchain Certification enhances your professional credibility, showcasing your skills and knowledge in blockchain technology. This can lead to better job opportunities, higher salaries, and career advancement in the tech, finance, and business sectors.
- Q9: What are the benefits of Blockchain Certification?
- A: Benefits include recognition as a certified blockchain professional, improved job performance, access to exclusive resources, continuing education opportunities, and staying current with the latest blockchain technologies and best practices.
- Q10: Who should take Blockchain Certification Exams?
- A: Software developers, IT professionals, business analysts, project managers, and anyone involved in developing or managing blockchain-based solutions should consider these certifications to validate their expertise and advance their careers.
- Q11: What types of Blockchain Certification Exams are available?
- A: Various organizations offer blockchain certification paths, including Certified Blockchain Developer (CBD), Certified Blockchain Solution Architect (CBSA), Certified Blockchain Professional (CBP), and more, each tailored to different roles and expertise levels in blockchain technology.
- Q12: How do I prepare for Blockchain Certification Exams?
- A: Preparation can include official training courses, study guides, practice exams, online tutorials, and hands-on experience in blockchain development and implementation.
- Q13: Where can I take Blockchain Certification Exams?
- A: Blockchain Certification Exams can typically be taken online, providing flexibility to fit your schedule and location.
- Q14: How do Blockchain Certifications impact my career?
- A: Blockchain Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in technology and business sectors.
- Q15: Are there any prerequisites for Blockchain Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior experience in blockchain technology. Check the specific requirements for each certification path on the certification provider’s website.
- Q16: How often do I need to recertify for Blockchain Certifications?
- A: Recertification requirements vary by certification provider, but it typically involves continuing education and staying updated with the latest advancements in blockchain technology to maintain your certification.