Ethereum Developer Tools Progress Quiz

1. What is the primary scripting language used for Ethereum smart contracts?

• Solidity
• JavaScript
• Python
• C++

2. What is the purpose of the JSON-RPC API in Ethereum development?

• It stores all permanent records of transactions on the network.
• It manages user accounts and permissions on the blockchain.
• It provides a uniform set of methods for interacting with the Ethereum blockchain.
• It conducts transaction validation and consensus across nodes.

3. Which API abstracts away the complexity of Ethereum’s client protocols?

• Alchemy API
• Infura API
• Web3 API
• Ethers API

4. What does Infura offer as a service?

• Bitcoin Mining as a Service.
• Ethereum API as a service.
• NFT Marketplace as a Service.
• Cloud Storage as a Service.

5. What is Truffle Suite used for in Ethereum development?

• It is a tool for mining Ethereum and providing computational power.
• It is a library for writing Solidity smart contracts in JavaScript.
• It is an exchange platform for trading Ethereum-based tokens.
• It provides a suite of tools for smart contract development, including a development blockchain, testing framework, and asset pipeline.

6. What is Remix IDE used for?

• It creates graphics and animations for Ethereum games.
• It is a mining software for Ethereum coins.
• It compiles and runs Java applications on the blockchain.
• It is used to write, test, and deploy Solidity smart contracts.

7. What is Ganache used for in Ethereum development?

• It provides a user interface for monitoring on-chain transactions.
• It compiles smart contracts into machine code for the blockchain.
• It facilitates the management of public Ethereum nodes.
• It creates a local Ethereum blockchain environment for testing smart contracts.

8. What is Hardhat used for in Ethereum development?

• It is a blockchain network for trading cryptocurrencies securely.
• It is a marketplace for buying and selling smart contracts.
• It is a development environment that allows developers to create, test, and deploy DApps with flexibility and robustness.
• It is a wallet service for storing Ethereum tokens.

9. What is Web3.js used for?

• It creates mobile applications for iOS and Android.
• It provides tools for creating transactions, signing messages, and interacting with the Ethereum network.
• It enables high-speed data processing for web applications.
• It is a framework for designing user interfaces.

10. What is Ethers.js used for?

• It is a collection of JavaScript libraries for interacting with the Ethereum network.
• It is a framework for building mobile applications on Ethereum.
• It is an API for creating Bitcoin transactions.
• It is a tool for managing Ethereum wallets offline.

11. What is Brownie used for?

• It is a decentralized marketplace for NFT trading.
• It is a Java framework for building web applications.
• It is a browser extension for managing Ethereum wallets.
• It is a Python-based development framework specifically designed for Ethereum smart contracts.

12. What is the main advantage of using Truffle Suite?

• It is designed only for developing mobile applications.
• It combines multiple tools in one framework, making it easier for developers.
• It provides an educational platform for blockchain beginners.
• It focuses solely on Ethereum token creation and management.

13. What is the main disadvantage of using Truffle Suite?

• It can be complex for beginners due to its rich feature set.
• It lacks compatibility with Solidity.
• It has no support for testing frameworks.
• It is only available for Windows users.

14. What is the main advantage of using Hardhat?

• It is highly customizable and provides excellent debugging tools.
• It simplifies all Ethereum transactions into one command.
• It has a built-in cryptocurrency wallet with low fees.
• It is exclusively for creating non-fungible tokens (NFTs).

15. What is the main disadvantage of using Hardhat?

• It has a steeper learning curve compared to simpler tools.
• It lacks community support and documentation.
• It does not integrate with popular libraries.
• It is exclusively for advanced developers only.

16. What is the purpose of the EVM (Ethereum Virtual Machine)?

• It is a graphical interface for managing transactions.
• It is a new cryptocurrency for trading on exchanges.
• It is a centralized server for storing Ethereum contracts.
• It is a decentralized virtual machine capable of handling scripts using the public nodes network.

17. What is the value token for Ethereum?

• Ether (ETH)
• Ripple (XRP)
• Bitcoin (BTC)
• Litecoin (LTC)

18. What is the function of the Testnet in Ethereum development?

• It is designed for carrying out real transactions with Ether.
• It is used to connect to the Ropsten Network for testing purposes.
• It allows for the creation of production-ready smart contracts.
• It ensures the security of the Ethereum mainnet.

19. Do you need to use real Ether to test DApps and smart contracts?

• Yes, you must buy Ether to test smart contracts.
• Yes, real Ether is necessary for testing DApps.
• No, test networks do not allow testing without Ether.
• No, free Ether can be used in test networks.

20. What happens when the gas runs out without the transaction being complete?

• All changes are reverted, and gas is paid to the miner.
• The gas fee is refunded to the sender.
• The transaction is automatically resubmitted.
• The transaction is completed without any issues.

21. What is the primary benefit of using a private network in Ethereum development?

• It automatically audits contracts for security vulnerabilities.
• It enhances transaction speed and reduces fees.
• It provides access to a larger network of users.
• It is useful for data privacy and permissions testing and control.

22. What is the purpose of the OpenZeppelin SDK?

• It allows for the creation of new blockchain protocols from scratch.
• It provides an interface for user authentication in decentralized apps.
• It helps develop, compile, upgrade, deploy, and interact with smart contracts.
• It manages cryptocurrency wallets for secure transactions.

23. What is the purpose of the sbt-ethereum tool?

• It is a mobile application for trading Ethereum coins.
• It converts Ethereum transactions into traditional bank transactions.
• It generates random smart contracts automatically without user input.
• It provides a tab-completey, text-based console for smart-contract interaction and development.

24. What is the purpose of the Cobra framework?

• It is a complex architecture for blockchain scalability and privacy.
• It is an interface for managing Ethereum transactions manually.
• It is a library for creating decentralized finance applications.
• It is a fast, flexible, and simple development environment framework for Ethereum smart contract testing and deployment.

25. What is the purpose of the Epirus framework?

• It is a Python framework for building decentralized apps.
• It is a C++ framework for creating Ethereum wallets.
• It is a Java framework for building smart contracts.
• It is a Ruby framework for developing blockchain games.

26. What is the purpose of the Etherspot SDK?

• It is used exclusively for building games on the blockchain.
• It creates decentralized applications solely for Ethereum.
• It serves as a basic cryptocurrency wallet without smart contract support.
• It supports most of the EVM-compatible chains and is a multi-chain smart wallet SDK.

27. What is the purpose of the Ambire Login SDK?

• It is a framework for creating Ethereum dApps only.
• It is a smart wallet SDK focused on onboarding via email and supports popular EVM chains.
• It is a blockchain mining tool for Ethereum.
• It is a security protocol for smart contracts.

28. What is the purpose of the Tatum SDK?

• It is a wallet application for managing cryptocurrency assets.
• It is a programming language specifically for writing smart contracts.
• It is a powerful, feature-rich TypeScript/JavaScript library that streamlines the development of blockchain applications.
• It is a database for storing and querying blockchain data.

29. What are some pre-built contract templates available for smart contract development?

• Simple Java app templates for generic applications.
• Pre-audited, robust smart contract templates available via thirdweb Explore.
• Pre-installed Word document templates for office use.
• Basic HTML contract templates for web development.

30. What are some benefits of using pre-built contract templates?

• They increase the overall gas fees incurred during transactions.
• They limit the functionality of smart contracts significantly.
• They require extensive manual coding for adjustments and updates.
• They help avoid deploying contracts with easily avoidable bugs and reduce redeployment costs.