Lotteries, Auctions, Voting
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Questions and Answers

What step ensures fair and unpredictable winner selection in a lottery conducted on the blockchain?

  • Step 4: Blockchain Randomness (correct)
  • Step 5: Automatic Prize Distribution
  • Step 1: Smart Contract Deployment
  • Step 6: Record Keeping on Blockchain
  • How does blockchain technology contribute to reducing fraud in lotteries?

  • By tokenizing auction items
  • By establishing a trustless environment (correct)
  • By providing global accessibility
  • By automating the prize distribution
  • What is the purpose of tokenizing auction items in the auction process?

  • To deploy smart contracts on the blockchain
  • To ensure transparency and traceability for bidders (correct)
  • To distribute prizes automatically
  • To automate the entire auction process
  • Why is recording all lottery transactions, entries, and results on the blockchain beneficial?

    <p>To leverage the blockchain's immutable nature for auditability</p> Signup and view all the answers

    What aspect of lotteries and auctions does smart contract deployment address?

    <p>Ensuring fair and unpredictable winner selection</p> Signup and view all the answers

    Why is it important to conduct transparent bidding in auctions?

    <p>To ensure fairness and visibility for all participants</p> Signup and view all the answers

    What is the role of smart contracts in auction processes?

    <p>To automate bidding, validation, and settlement processes</p> Signup and view all the answers

    How does blockchain technology help reduce fraud in auctions?

    <p>By enabling immutable records and transparent processes</p> Signup and view all the answers

    What is the benefit of automating bid validation in auctions?

    <p>To ensure fair and tamper-proof auction processes</p> Signup and view all the answers

    Why is immediate transaction settlement important in auctions?

    <p>To provide quick and secure transfers of assets</p> Signup and view all the answers

    What vulnerabilities were exploited in The DAO attack on June 17, 2016?

    <p>Vulnerabilities including recursive calls</p> Signup and view all the answers

    What happened to the 3.6 million Ether that was gained during The DAO attack?

    <p>It was put into an account with a holding period</p> Signup and view all the answers

    What were some of the discussions within The DAO and Ethereum community after the attack?

    <p>Shutting down The DAO completely</p> Signup and view all the answers

    Which step is NOT involved in setting up a lottery using smart contracts on the blockchain?

    <p>Cryptocurrency Transactions Initiation</p> Signup and view all the answers

    What is the purpose of Step 2 in setting up a lottery with smart contracts?

    <p>To define transparent and immutable rules</p> Signup and view all the answers

    What is the first step in deploying a secure voting system on a blockchain platform?

    <p>Deploy a secure and audited smart contract</p> Signup and view all the answers

    How are voter identities authenticated in the voting system?

    <p>By receiving a unique cryptographic key pair</p> Signup and view all the answers

    What is the role of blockchain tokens in the voting process?

    <p>To tokenize voting rights for each voter</p> Signup and view all the answers

    How does the voting system ensure transparency and authenticity of votes?

    <p>By leveraging cryptographic signatures for vote casting</p> Signup and view all the answers

    What benefit does decentralization provide to the validation process in the voting system?

    <p>Prevents manipulation through decentralized validation nodes</p> Signup and view all the answers

    What is the purpose of utilizing blockchain's pseudorandomness in a lottery smart contract?

    <p>To ensure fair and unpredictable winner selection</p> Signup and view all the answers

    How does automatic prize distribution benefit a lottery conducted on the blockchain?

    <p>It eliminates the need for intermediaries.</p> Signup and view all the answers

    What is the main advantage of recording all lottery transactions, entries, and results on the blockchain?

    <p>Auditability through the blockchain's immutable nature</p> Signup and view all the answers

    What is the key benefit of tokenizing auction items in the auction process?

    <p>Representing ownership and transfer rights</p> Signup and view all the answers

    How does smart contract deployment contribute to auction processes?

    <p>It serves as the auction platform</p> Signup and view all the answers

    What role does bidder registration play in ensuring transparency and traceability in auctions?

    <p>It allows bidders to register by interacting with the smart contract</p> Signup and view all the answers

    What vulnerabilities were exploited in The DAO attack on June 17, 2016?

    <p>Recursive calls</p> Signup and view all the answers

    What was the value of the affected Ether gained during The DAO attack?

    <p>$50 million</p> Signup and view all the answers

    What step ensures fair and unpredictable winner selection in a lottery conducted on the blockchain?

    <p>Transparent Rules Definition</p> Signup and view all the answers

    Why is it important to conduct transparent bidding in auctions?

    <p>To ensure fairness and visibility for all participants.</p> Signup and view all the answers

    What benefit does decentralization provide to the validation process in the voting system?

    <p>Tamper-proof entries</p> Signup and view all the answers

    What benefit does decentralization provide to the validation process in the voting system?

    <p>It eliminates the need for a central authority.</p> Signup and view all the answers

    What is the purpose of Step 2 in setting up a lottery with smart contracts?

    <p>Encode transparent rules</p> Signup and view all the answers

    What is the purpose of automating bid validation in auctions?

    <p>To ensure fair and tamper-proof auction processes.</p> Signup and view all the answers

    How does blockchain technology contribute to reducing fraud in lotteries?

    <p>By providing immutable records and transparent processes.</p> Signup and view all the answers

    Why is immediate transaction settlement important in auctions?

    <p>To prevent disputes</p> Signup and view all the answers

    What step ensures fair and unpredictable winner selection in a lottery conducted on the blockchain?

    <p>Automatically determining the highest bidder as the winner.</p> Signup and view all the answers

    Why is immediate transaction settlement important in auctions?

    <p>To provide quick and secure transfers of assets.</p> Signup and view all the answers

    How do users join the DAO?

    <p>Users join the DAO by calling the joinDAO function.</p> Signup and view all the answers

    What is the purpose of the createProposal function in the DAO contract?

    <p>The createProposal function is used for members to create proposals with a description.</p> Signup and view all the answers

    How are proposals executed in the DAO?

    <p>Proposals can be executed by the DAO if they receive enough support.</p> Signup and view all the answers

    What determines a member's voting power in the DAO?

    <p>A member's voting power is based on their stake in the DAO.</p> Signup and view all the answers

    Why are events emitted throughout the DAO process?

    <p>Events are emitted to help in tracking and understanding the DAO's activities.</p> Signup and view all the answers

    What happens if a campaign in Ethereum's DAO expires without meeting the funding goal?

    <p>Refunds are issued to contributors if the campaign expires and the goal is not met.</p> Signup and view all the answers

    How does blockchain technology ensure transparency and authenticity in the voting process?

    <p>By allowing voters to cast their votes using cryptographic signatures for transparency and authenticity.</p> Signup and view all the answers

    What is the purpose of tokenizing voting rights in the voting process?

    <p>To ensure each voter has a limited and verifiable number of tokens corresponding to their eligibility.</p> Signup and view all the answers

    How does decentralized validation contribute to the security of the voting system?

    <p>By leveraging the decentralized nature of blockchain, each node in the network verifies the legitimacy of votes, preventing manipulation.</p> Signup and view all the answers

    What is the benefit of conducting the voting process directly through the smart contract?

    <p>It allows voters to cast their votes using cryptographic signatures for transparency and authenticity.</p> Signup and view all the answers

    How does the voting system ensure immutable record-keeping of all transactions and results?

    <p>By recording all voting transactions and results on the blockchain, creating an immutable and transparent ledger that can be audited by all participants.</p> Signup and view all the answers

    What role do blockchain tokens play in the voting process?

    <p>They tokenize voting rights, ensuring each voter has a limited and verifiable number of tokens corresponding to their eligibility.</p> Signup and view all the answers

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