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Blockchain CBDE Exam Questions

Exam Name: BTA Certified Blockchain Developer - Ethereum
Exam Code: CBDE
Related Certification(s): Blockchain Certified Blockchain Developer - Ethereum Certification
Certification Provider: Blockchain
Actual Exam Duration: 90 Minutes
Number of CBDE practice questions in our database: 102 (updated: Feb. 26, 2026)
Expected CBDE Exam Topics, as suggested by Blockchain :
  • Topic 1: Use the essential tooling and systems needed to work with the Ethereum ecosystem/ Understand and work with Ethereum fees
  • Topic 2: Deploy smart contracts both the live and test Ethereum networks/ Unit test smart contracts
  • Topic 3: Work within the bounds and limitations of the Ethereum blockchain/ Calculate Ethereum gas costs
  • Topic 4: Plan and prepare production ready applications for the Ethereum blockchain/ Write and compile Solidity smart contracts
  • Topic 5: Write, test, and deploy secure Solidity smart contracts/ Run an Ethereum node on development machines Implement web3.js/ Create secure smart contracts
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Gracie

3 days ago
Just became a certified Ethereum developer! Pass4Success's exam prep was crucial. So glad I found them in time!
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Yoko

13 days ago
The toughest topic was zk-SNARK integration with smart contracts; the practice tests from PASS4SUCCESS had focused modules and quick corrective notes that saved me time during review.
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Francene

20 days ago
I felt overwhelmed by time constraints and tough topics, yet PASS4SUCCESS organized my study plan and boosted my confidence with focused drills. Stay persistent—your hard work will pay off.
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Glory

27 days ago
Feeling confident after acing the Blockchain BTA Certified Blockchain Developer - Ethereum exam, thanks to the PASS4SUCCESS practice exams. My advice? Revise thoroughly, but don't forget to take breaks and stay focused.
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Edelmira

1 month ago
Struggling with the exam? Don't worry, the PASS4SUCCESS practice tests got me through it. My top tip? Manage your time wisely and don't get bogged down in any one section.
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Yolando

1 month ago
Successfully completed the BTA Ethereum exam! Pass4Success's questions were incredibly similar to the real thing. Thank you!
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Margret

2 months ago
Passing the Blockchain BTA Certified Blockchain Developer - Ethereum exam was a game-changer for me. The PASS4SUCCESS practice exams were a lifesaver - they really helped me identify my weak areas and focus my study efforts.
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Rosalind

2 months ago
Passed the Blockchain BTA exam, and the practice questions from Pass4Success were invaluable. One question that stumped me was about Objective 1: 'What are the key steps in deploying a decentralized application (DApp) on Ethereum?' I had some doubts, but I managed to pass.
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Jess

2 months ago
I was anxious about the code traces and tricky questions at first, but PASS4SUCCESS gave me structured practice and clear explanations, and now I'm confident I can tackle anything. You've got this—believe in your preparation and keep pushing forward.
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Walker

2 months ago
I just passed the Ethereum developer exam, and Pass4Success was a lifesaver. There was a difficult question on Objective 2: 'How does the Ethereum Virtual Machine (EVM) ensure security during contract execution?' I wasn't sure of my answer, but I still passed.
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Chau

3 months ago
Ethereum exam: check! Pass4Success's prep materials were worth every penny. Highly recommend for quick and effective studying.
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Alesia

3 months ago
Passed my BTA Blockchain Developer cert today! Pass4Success's exam questions were a lifesaver. Couldn't have done it without them.
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Howard

3 months ago
Successfully passed the Blockchain BTA exam! Pass4Success practice questions were essential. One tricky question was on Objective 7: 'What are the advantages and disadvantages of using Proof of Stake over Proof of Work?' I had to guess a bit, but I made it through.
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Marvel

3 months ago
Wow, the Ethereum exam was tough, but I made it! Pass4Success's materials were spot-on. Thanks for helping me succeed!
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Brock

4 months ago
I passed the Ethereum developer certification, and Pass4Success was incredibly helpful. A challenging question was related to Objective 3: 'What are the differences between externally owned accounts and contract accounts?' I wasn't entirely confident, but I did well enough.
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Fredric

4 months ago
tricky question styles around EVM bytecode and reentrancy edge cases; PASS4SUCCESS practice exams walked me through common pitfalls and showed patterns I could memorize.
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Mollie

4 months ago
Just passed the BTA Certified Blockchain Developer - Ethereum exam! So grateful for Pass4Success's relevant questions. Saved me so much prep time!
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Josephine

4 months ago
The hardest part for me was understanding state channels and how they interact with on-chain transactions; PASS4SUCCESS practice exams broke down the diagrams and gave me real scenarios to map out gas costs and pressures.
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Glory

5 months ago
Cleared the Blockchain BTA exam, and the practice questions from Pass4Success were spot on. One question that puzzled me was about Objective 4: 'How do you manage contract upgrades in Ethereum?' I had some doubts, but I managed to pass.
upvoted 0 times
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Haley

5 months ago
I just passed the Ethereum developer exam, and Pass4Success was a big part of my success. There was a tough question on Objective 6: 'Describe the concept of gas limit and gas price in Ethereum.' I wasn't sure of my answer, but I still passed.
upvoted 0 times
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Marshall

5 months ago
Passed the Blockchain BTA exam, and the practice questions from Pass4Success were a great help. One question that I found challenging was on Objective 5: 'What are the common vulnerabilities in smart contracts?' I had to think hard, but I made it through.
upvoted 0 times
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Robt

5 months ago
I successfully cleared the Ethereum developer certification, thanks to Pass4Success. A difficult question was about Objective 1: 'What are the steps involved in creating a new ERC-20 token?' I wasn't entirely confident, but I still passed.
upvoted 0 times
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Rolland

6 months ago
Passed the Ethereum dev exam with flying colors. Pass4Success, thanks for the perfect prep!
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Filiberto

6 months ago
Just passed the Blockchain BTA exam, and Pass4Success practice questions were crucial. One tricky question was on Objective 2: 'How does Ethereum handle transaction ordering?' I had some doubts, but I managed to pass.
upvoted 0 times
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Rosalia

8 months ago
BTA Blockchain certification achieved in record time. Pass4Success, you rock!
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Jamal

9 months ago
Nailed the Ethereum exam! Pass4Success's practice questions were spot-on.
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Lacey

10 months ago
BTA Certified Blockchain Developer - Ethereum: check! Kudos to Pass4Success for the timely prep.
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Jamal

11 months ago
Ethereum developer certification done! Pass4Success's relevant questions made all the difference.
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Raylene

1 year ago
Successfully cleared the BTA Blockchain exam. Pass4Success, you're a game-changer!
upvoted 0 times
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Tyisha

1 year ago
Ethereum certification in the bag! Pass4Success's questions were key to my quick preparation.
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France

1 year ago
I passed the Ethereum developer exam with the help of Pass4Success. A challenging question was related to Objective 7: 'Compare and contrast public and private blockchains.' I wasn't sure if I covered all the differences, but I did well enough.
upvoted 0 times
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Jillian

1 year ago
Passed the BTA Certified Blockchain Developer exam today. Pass4Success's practice tests were invaluable!
upvoted 0 times
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Caitlin

1 year ago
Cleared the Blockchain BTA exam, and the practice questions from Pass4Success were invaluable. One question that stumped me was about Objective 3: 'What are the different types of Ethereum accounts?' I had to guess a bit, but I made it through.
upvoted 0 times
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Emogene

1 year ago
Ethereum exam success! Grateful to Pass4Success for their efficient study resources.
upvoted 0 times
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Lenita

1 year ago
I just passed the Ethereum developer certification, and Pass4Success was instrumental in my success. There was a tough question on Objective 4: 'How do you handle state changes in a smart contract?' I wasn't entirely sure of my answer, but I still passed.
upvoted 0 times
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Gabriele

1 year ago
Successfully passed the Blockchain BTA exam! Pass4Success practice questions were a big help. One question that I found difficult was on Objective 6: 'Explain the role of gas in Ethereum transactions.' I had some doubts, but I managed to answer it correctly.
upvoted 0 times
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Gwen

1 year ago
BTA Blockchain Developer certification achieved! Pass4Success made it possible with their spot-on exam questions.
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Lynette

1 year ago
I passed the Ethereum developer exam, and the practice questions from Pass4Success were spot on. A question that puzzled me was about Objective 5: 'What are the security best practices for writing smart contracts?' I wasn't sure if I covered all the points, but I did well overall.
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Jarod

1 year ago
Passing the Blockchain BTA exam was a great achievement, thanks to Pass4Success. One challenging question was related to Objective 1: 'Describe the process of deploying a smart contract on the Ethereum network.' I had to think hard about the steps involved, but I made it.
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Coleen

1 year ago
Aced the Ethereum cert exam! Thanks Pass4Success for the quick prep materials.
upvoted 0 times
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Eliseo

1 year ago
Passed the exam thanks to thorough preparation! Final tip: Review Ethereum's roadmap and upcoming upgrades. The exam touched on future developments and their potential impact on the ecosystem.
upvoted 0 times
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Ryan

1 year ago
Just cleared the Ethereum developer exam, and Pass4Success was a lifesaver! There was a tricky question on Objective 2: 'How does the Ethereum Virtual Machine (EVM) handle smart contract execution?' I wasn't entirely confident in my answer, but I still passed.
upvoted 0 times
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Helaine

1 year ago
Passed the exam thanks to Pass4Success! Their practice questions were spot-on and helped me prepare efficiently. Highly recommend for anyone taking the BTA Certified Blockchain Developer - Ethereum exam.
upvoted 0 times
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Kent

1 year ago
I recently passed the Blockchain BTA Certified Blockchain Developer - Ethereum exam, and I must say, the Pass4Success practice questions were incredibly helpful. One question that caught me off guard was about Objective 7: 'What are the key differences between Proof of Work and Proof of Stake consensus mechanisms?' I was a bit unsure about the specifics, but I managed to get through it.
upvoted 0 times
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Latanya

2 years ago
Just passed the BTA Certified Blockchain Developer - Ethereum exam! Pass4Success was a lifesaver with their relevant practice questions.
upvoted 0 times
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Chanel

2 years ago
Passing the Blockchain BTA Certified Blockchain Developer - Ethereum exam was a great achievement for me, and I owe it to Pass4Success practice questions. The exam tested my knowledge of deploying smart contracts on both live and test Ethereum networks and understanding Ethereum fees. One question that made me think was about unit testing smart contracts. I had to demonstrate my ability to write effective unit tests for a smart contract, but I managed to pass the exam successfully.
upvoted 0 times
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Remona

2 years ago
My exam experience for the Blockchain BTA Certified Blockchain Developer - Ethereum exam was successful, thanks to Pass4Success practice questions. The exam focused on essential tooling for working with the Ethereum ecosystem and unit testing smart contracts. One question that challenged me was related to deploying smart contracts on the live Ethereum network. I had to carefully consider the steps involved in deploying a smart contract securely, but I was able to pass the exam.
upvoted 0 times
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Gayla

2 years ago
Just passed the BTA Certified Blockchain Developer - Ethereum exam! The smart contract security section was challenging, with questions on common vulnerabilities like reentrancy attacks. Make sure to study Solidity best practices and security patterns. Thanks to Pass4Success for their spot-on practice questions that helped me prepare efficiently!
upvoted 0 times
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Lai

2 years ago
I recently passed the Blockchain BTA Certified Blockchain Developer - Ethereum exam with the help of Pass4Success practice questions. The exam covered topics such as deploying smart contracts on the Ethereum network and understanding Ethereum fees. One question that stood out to me was related to working with Ethereum fees. I was unsure about the gas fee calculation for a specific smart contract deployment scenario, but I managed to pass the exam.
upvoted 0 times
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Free Blockchain CBDE Exam Actual Questions

Note: Premium Questions for CBDE were last updated On Feb. 26, 2026 (see below)

Question #1

Events:

Reveal Solution Hide Solution
Correct Answer: B

Question #2

On a consortium network:

Reveal Solution Hide Solution
Correct Answer: B

Question #3

Externally Owned Accounts (EoA):

Reveal Solution Hide Solution
Correct Answer: A

Question #4

Events:

Reveal Solution Hide Solution
Correct Answer: B

Question #5

Using truffle-contract over Web3.js:

Reveal Solution Hide Solution
Correct Answer: B

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