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Blockchain CBDE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Development Tools & Frameworks | - Deployment and migration workflows - Truffle, Hardhat, and testing frameworks |
| Security and Best Practices | - Secure coding practices - Smart contract vulnerabilities |
| DApp Development | - Frontend interaction with smart contracts - Web3 integration |
| Ethereum Fundamentals | - Blockchain architecture and Ethereum ecosystem - Accounts, transactions, and gas model |
| Smart Contracts Development | - Contract structure, functions, and modifiers - Solidity programming fundamentals |
CBDE Practice Questions FAQ
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The package includes 102 practice questions for the CBDE exam. The count is set through analysis of a large volume of data, so the set matches the scope of the real test without padding.
- Development Tools & Frameworks ()
- Ethereum Fundamentals ()
- Security and Best Practices ()
Divide your time according to each topic's weight.
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Recommended understanding of blockchain concepts and basic Ethereum development experience.
Blockchain BTA Certified Blockchain Developer - Ethereum Sample Questions:
Integrating the community into your testing:
- A. is great, because they often find bugs which weren't considered before.
- B. is not good, because you might give out secrets.
Correct Answer: A 🗳️
Solidity files:
- A. can't be split across multiple files, everything should be in one single file.
- B. can be split across multiple files, but every contract must be in a file with the same name as the contract itself.
- C. can be spread across multiple files. To import all contract from a file you can use "import 'myfile.sol'. To import Contract MyContract from myfile.sol you use "import {MyContract as SomeContract} from 'myfile.sol';".
Correct Answer: C 🗳️
To communicate with an Ethereum node via JavaScript:
- A. the library you use must make use of the JSON-RPC Interface of an Ethereum Node.
- B. must use Web3.js, which is closed source to communicate to other Ethereum Nodes.
- C. must Implement the Ethereum Protocol to connect to other Ethereum Nodes.
Correct Answer: A 🗳️
What are Ethereum Nodes?
- A. A Framework for deploying and running smart contract in a decentralized way.
- B. Programs implementing the Ethereum Protocol to talk to each other and JSON-RPC interfaces to talk to the outside world.
- C. A Java-Script library to compile and run Solidity Code.
Correct Answer: B 🗳️
When defining a new datatype:
- A. its best to use a contract with public storage variables, so it can be used like a class.
- B. it's not possible to generate new datatypes in Solidity.
- C. it's best to use a struct, which is cheaper than deploying a new contract.
Correct Answer: C 🗳️
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