BTA Certified Blockchain Developer - Ethereum

Here you have the best Blockchain CBDE practice exam questions

You have 99 total questions to study from
Each page has 5 questions, making a total of 20 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on October 10, 2025
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Question 1 of 99

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.

Correct Answer: B

Question 2 of 99

Which is the right order for Denominations?

Wei, Finney, Szabo, Ether, Tether.

Finney, Szabo, Mether, Gwei.

Gwei, Szabo, Finney, Ether.

Correct Answer: C

Question 3 of 99

The nonce-field in a transaction is used:

to protect against replay attacks.

to have an additional checksum for transactions.

to sum up all ethers sent from that address.

Correct Answer: A

Question 4 of 99

Which statement is true about the EVM?

While the EVM is Sandboxed, it isn't as powerful as the Bitcoin Network, because it's not Turing Complete.

The EVM can't access hardware layers or anything outside a blockchain node because it's sandboxed.

The EVM is extremely powerful, turing complete and perfect for doing computational intensive things, because of the direct access to the graphics card.

Correct Answer: C

Question 5 of 99

DApps are:

great, because they cut the middle man, run on a trusted platform, apply logic to the blockchain where already economic assets are running and thus allow peer to peer trade.

an amazing way to create new applications. Those applications run entirely separated from other applications on the platform and allow for logical interactions. They can't access any funds to add an additional layer of trust.

a new way of applying logical operations for banks and big financial institutions. This way they can reduce the staff while operating at increased security.

Correct Answer: B