Name: BTA Certified Blockchain Developer - Ethereum
Brand: ValidExamDumps
SKU: CBDE
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Free Blockchain CBDE Exam Actual Questions

The questions for CBDE were last updated On Nov 18, 2024

Question No. 1

When considering smart contracts and the blockchain it's good:

Ato move all existing logic to the blockchain, so everything runs on the same system. This way it might be more complex, but easier to maintain.

Bto move only those parts to the blockchain that really need the blockchain. This way smart contracts can be easier to read, easier to test and are not so complex.

Cto move those parts to the blockchain that deal with Ether transfers. All other parts can remain in traditional database systems. This way only the value-transfer is on the blockchain.

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Correct Answer: B

Question No. 2

To store almost all data in the Ethereum Blockchain:

Aa Linked List with pointers to previous blocks hashes is used.

Ba Merkle Patricia Trie is used.

Ca Radix Trie is used because the Merkle Patricia Trie is too inefficient.

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Correct Answer: B

Question No. 3

EVM assembly:

Ais much better than Solidity and a viable alternative.

Bcan be split across multiple files, but every contract must be in a file with the same name as the contract itself.

Cis another language similar to LLL, more secure than Solidity.

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Correct Answer: B

Question No. 4

When using assert to check invariants and it evaluates to false:

Aall gas is consumed.

Ball remaining gas is returned.

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Correct Answer: A

Question No. 5

Consensus is reached:

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

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

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

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Correct Answer: B