Gaming on Ethereum Blockchain Quiz

1. What is the Ethereum Quiz Game?

• The Ethereum Quiz Game is a centralized application that does not utilize blockchain technology.
• The Ethereum Quiz Game is a cryptocurrency exchange for trading assets and tokens.
• The Ethereum Quiz Game is a game that runs on the Ethereum blockchain platform, allowing users to create and take quizzes with entrance fees and accruing pools.
• The Ethereum Quiz Game is a social media platform for connecting users through quizzes.

2. What are the software dependencies required to run the Ethereum Quiz Game?

• Metamask (6.4.0), Truffle (5.0), Ganache (2.0.0), Lite-Server (6.4.1), and Solidity (0.5.0).
• Ruby (2.7), PostgreSQL (13.0), Nginx (1.19), Webpack (5.0).
• Java (11), Redis (6.2), Express (4.x), MongoDB (4.2).
• Python (3.8), Node.js (12.x), MySQL (8.0), Docker (19.03).

3. How do you install the required software for the Ethereum Quiz Game?

• Obtain the Ethereum wallet, create a smart contract, and test on Remix.
• Download Metamask, install Truffle, and set up Lite-Server.
• Use a command line tool, install Docker, and launch blockchain nodes.
• Install Ganache directly from the website and run the code on Ethereum.

4. How do you set up Ganache for the Ethereum Quiz Game?

• Create a new workspace in the Ganache GUI client, add the truffle-config.js file, set the host name to 127.0.0.1 and port number to 8545, and start the local server.
• Change the configuration settings of Ganache to connect to a remote server on port 8000.
• Set up Ganache by downloading the command-line version and running it without any configuration settings.
• Install Ganache using the command line and configure the IP address to 192.168.0.1 with port 7545.

5. How do you import accounts into Metamask for the Ethereum Quiz Game?

• Copy and paste the seed phrase from Ganache into Metamask to set up the account.
• Download a third-party app to import accounts into Metamask.
• Enter your Metamask password to import accounts.
• Sync your bank account with Metamask to import accounts.

6. How do you deploy the contract for the Ethereum Quiz Game?

• Run the Ethereum node using `geth` and write the script in Python.
• Use `npm install` followed by `deploy contract` in the terminal to launch.
• Create a new project in Visual Studio and run deployment commands in Java.
• Execute `truffle compile` and `truffle migrate –reset` in the project directory. Copy the contract address from Ganache and paste it into line 310 of script.js.

7. How do you run the Ethereum Quiz Game project?

• Type `ganache serve` in the terminal to run the game.
• Run `npm run dev` in the project directory to start the lite-server on host 127.0.0.1 port 3000.
• Launch the application by clicking the start icon in the folder.
• Execute `truffle run game` from the command line.

8. What are the steps to make a quiz in the Ethereum Quiz Game?

• Pick a template, input existing quiz details, upload files, and share the quiz link with friends.
• Select the make a quiz option, input quiz name and fees, enter questions and answers, and click Make Quiz.
• Choose a quiz from the list, click Take Quiz, pay the fees, and start answering questions.
• Create user accounts, set fee prices, design layout, and develop content before making a quiz.

9. What are the steps to take a quiz in the Ethereum Quiz Game?

• Choose the settings menu, adjust the quiz duration, invite friends, and start the quiz promptly.
• Open the game interface, set the difficulty level, type in participant names, and begin the quiz.
• Select take a quiz option, choose a quiz from list, click yes to pay fee, and confirm transaction.
• Click on create a quiz, submit entrance fee, enter question and choices, and publish quiz.

10. What happens if a user answers correctly in the Ethereum Quiz Game?

• The user is paid with the amount in that quiz`s pool.
• The user is banned from future quizzes.
• The quiz is immediately terminated.
• The user loses their entrance fee.

11. What are the missing functionalities in the Ethereum Quiz Game?

• Grading the user`s submitted answer choice and awarding the winning user the pool amount.
• Integrating a chat feature for player interaction.
• Allowing players to earn badges for achievements.
• Adding a leaderboard to track player scores.

12. What is MetaMask used for in Ethereum?

• A tool for creating social media applications on Ethereum.
• An email service for communication in decentralized networks.
• A mobile app for trading cryptocurrencies and stocks.
• A browser plugin that connects to the Ethereum network to interact with dApps and manage accounts.

13. What is the correct order of denominations on the Ethereum Blockchain?

• Wei, Gwei, Szabo, Finney, Ether.
• Finney, Ether, Szabo, Gwei, Wei.
• Gwei, Finney, Wei, Ether, Szabo.
• Szabo, Wei, Ether, Gwei, Finney.

14. What is the nonce field used for in a transaction?

• It’s a signature for verifying the sender’s identity.
• It’s a timestamp to log transaction timing.
• It’s a numerical field to protect against replay attacks.
• It’s a hash for encrypting transaction data.

15. In Solidity, what is the result of dividing integer -5 by integer 2?

• -3
• -2
• 2
• -4

16. How do Ethereum addresses, public keys, and private keys differ?

• An address is 20 bytes long, a public key is 64 bytes long, and the private key is 32 bytes long.
• An address is 64 bytes long, a public key is 20 bytes long, and the private key is 64 bytes long.
• An address is 40 bytes long, a public key is 128 bytes long, and the private key is 16 bytes long.
• An address is 32 bytes long, a public key is 24 bytes long, and the private key is 20 bytes long.

17. What is the value token for Ethereum?

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

18. What is Ether used for in Ethereum?

• Ether powers the Ethereum network and fuels smart contracts.
• Ether is used to mine Bitcoin and create blocks.
• Ether serves as a social media platform for users.
• Ether allows transactions to occur on the Bitcoin network.

19. What is the consensus algorithm used by Ethereum?

• Byzantine Fault Tolerance (BFT)
• Proof of Stake (PoS)
• Proof of Authority (PoA)
• Delegated Proof of Stake (DPoS)

20. How do miners get rewarded in Ethereum?

• Miners are paid in Bitcoin for their services.
• Miners earn points that can be redeemed for cash.
• Miners receive block rewards in return for validating blocks.
• Miners receive a fixed salary for their work.

21. What is a dApp in the context of Ethereum?

• A protocol for transactions.
• A digital asset for trading.
• A decentralized application.
• A centralized software program.

22. What is Truffle used for in Ethereum development?

• Truffle is a testing and development environment for Ethereum, used to create smart contracts, dApps, and automate testing.
• Truffle is a wallet application for storing Ethereum assets.
• Truffle is a programming language specific to Ethereum smart contracts.
• Truffle is a cryptocurrency exchange platform for trading Ether.

23. What is the block time and average block size in Ethereum?

• The block time is 30 seconds, and the average block size is 500 KB.
• The block time is 10 minutes, and the average block size is 1 MB.
• The block time is 5 seconds, and the average block size is 256 KB.
• The block time is 14 seconds, and the average block size is 2 KB.

24. Are transactions on the Ethereum network public?

• No, only miners can view the transactions.
• No, transactions are private and cannot be seen by anyone.
• Yes, but only average users can see them.
• Yes, all transactions on the Ethereum network are public.

25. Is the user’s private key used to sign transactions?

• No, the user’s private key is never used in any transactions.
• Yes, the user’s public key is used to sign transactions.
• No, the user’s password is used to sign transactions.
• Yes, the user’s private key is used to sign transactions.

26. What happens if gas runs out without the transaction being complete?

• The transaction is completed with zero fees.
• The user receives a refund of all gas fees.
• The transaction is saved for future use.
• All state changes are reversed, and the used Ethereum Gas is given to the miner.

27. What is the difference between Bitcoin and Ethereum blockchain?

• Bitcoin is a first-generation blockchain with a focus on secure transactions, while Ethereum provides a programmable blockchain supporting smart contracts and dApps.
• Bitcoin is an inflationary currency model, while Ethereum has a fixed supply cap like gold.
• Bitcoin offers faster transaction speeds, while Ethereum transactions take longer due to its complex coding.
• Bitcoin is a digital currency focused solely on anonymity, while Ethereum functions only as a payment processor.

28. What are the important traits of blockchain technology?

• Centralization, flexibility, and obscurity.
• Anonymity, volatility, and simplicity.
• Duplication, instability, and complexity.
• Decentralization, immutability, and transparency.

29. Can blockchain technology offer access to financial transactions like banks without intermediaries?

• Yes, blockchain technology can offer access to financial transactions like banks without intermediaries through smart contracts.
• No, blockchain is only a ledger for bank transactions, not for access.
• Yes, but only governments can authorize blockchain transactions.
• No, blockchain requires banks to process transactions for security.

30. What is a smart contract used for in blockchain?

• Smart contracts primarily function as a method for transferring cryptocurrencies.
• Smart contracts are used to store user data and information securely.
• Smart contracts automate transactions by executing predefined actions when conditions are met.
• Smart contracts serve as manual agreements between parties without automation.