CBDEBTA Certified Blockchain Developer - Ethereum
102 Questions and Answers Experienced specialists selected 102 questions for this exam. All answers are verified to ensure correctness.
Last Updated May 12, 2024 Ace your exams with our consistently updated CBDE exam dumps.
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CBDE Online Practice Questions and Answers
Transactions containing the same data to create the same smart contract are:
A. always having the same signature.
B. having a different signature because of the nonce which changes upon every transaction.
The JSON-RPC Protocol:
A. is used to communicate between blockchain nodes.
B. is used to ensure safe communication between miners.
C. is a mean of dumping the blockchain data in a so-called consensus export.
D. is used to communicate between the blockchain node and externally running applications.
All low-level functions on the address, so address.send(), address.call.valueQQ, address.callcode and address.delegatecall:
A. are interrupting execution on error, because they throw an exception.
B. continuing execution on error silently, which is the reason why they are so dangerous.
C. returning Booleans to indicate an error during execution.
D. .send() throws an exception, while the other functions are returning Booleans during execution to indicate an error.
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