BTA Certified Blockchain Developer - Ethereum

Here you have the best Blockchain CBDE practice exam questions

You have 102 total questions across 21 pages (5 per page)
These questions were last updated on February 12, 2026
This site is not affiliated with or endorsed by Blockchain.

Question 1 of 102

Consensus is reached:

by the miner nodes which make sure that a transaction is valid.

by every single node in the blockchain network executing the same transaction.

by a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible.

Question 2 of 102

Smart Contracts can be written in:

Java, C++, Solidity and JavaScript, because the Ethereum Blockchain is completely language agnostic and cross compilers exist for every major language.

Solidity, Viper, LLL and Serpent, because those are high level languages that are compiled down to bytecode.

Solidity and JavaScript, because those are the official first implementations for Distributed applications and the Blockchain supports those languages fully.

Question 3 of 102

Solidity gets compiled:

to bytecode that can't be understood by humans.

to bytecodes which are essentially opcodes running instruction by instruction.

Question 4 of 102

Having a bug-bounty program early on:

can help to engage the community in testing your smart contracts and therefore help to find bugs early.

might be a burden as it is an administrative overhead mainly.

is completely useless. Who wants to test beta-ware software? It’s better to start with the bug-bounty program after the contract is released on the main-net.

Question 5 of 102

Which is the right order for Denominations?

Wei, Finney, Szabo, Ether, Tether.

Finney, Szabo, Mether, Gwei.

Gwei, Szabo, Finney, Ether.

About the Blockchain CBDE Certification Exam

About the Exam

The Blockchain CBDE (BTA Certified Blockchain Developer - Ethereum) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 102 practice questions across 21 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our CBDE questions are regularly updated to reflect the latest exam objectives.