File Info
| Exam | BTA Certified Blockchain Developer - Ethereum |
| Number | CBDE |
| File Name | Blockchain.CBDE.VCEplus.2019-10-30.102q.tqb |
| Size | 260 KB |
| Posted | Oct 30, 2019 |
| Download | Blockchain.CBDE.VCEplus.2019-10-30.102q.tqb |
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Demo Questions
Question 1
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
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.
Correct answer: B
Question 3
Solidity gets compiled:
- to bytecode that can't be understood by humans.
- to bytecodes which are essentially opcodes running instruction by instruction.
Correct answer: B
