Printable PDFBlockchain CBDE Exam Questions & Answers
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Vendor: Blockchain
Exam Code: CBDE
Exam Name: BTA Certified Blockchain Developer - Ethereum
Certification Provider: Blockchain
Total Questions: 102 Q&A ( View Details)
Updated on: Jun 08, 2025
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CBDE Online Practice Questions and Answers
Which statement is true about the EVM?
A. While the EVM is Sandboxed, it isn't as powerful as the Bitcoin Network, because it's not Turing Complete.
B. The EVM can't access hardware layers or anything outside a blockchain node because it's sandboxed.
C. The EVM is extremely powerful, turing complete and perfect for doing computational intensive things, because of the direct access to the graphics card.
Proof of Work (PoW) vs. Proof of Stake.
A. PoW is computationally intensive which requires lots of energy. On the other hand, miners earn straightforward a reward for mining a block and incorporating transactions.
B. PoW is better than PoS, because with PoS we increase the amount of energy spent on the network.
C. PoS is mining with specialized new hardware that has to be purchased with a stack of Ether in the network. Hence the Name: Proof of Stake, which derives from Stack.
Single line comments in Solidity are:
A. working with either // or ///
B. working with /* comment */ or /** @.. natspec style */
C. not possible, all comments must be multi-line.
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