ArtOfBlockChain
ArtOfBlockChain
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  • Difficulty - Medium
    Total Plays - 17
    Allowed Time - 10 sec
    Best time - 4.101 sec

    Which is a risk of using oracles?

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    Explanation:
    Centralized oracles can be a single point of failure. If they provide false data, contracts relying on them can be exploited.
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    Explanation:
    In an Eclipse attack, an attacker isolates a node from the network, feeding it false data. This can lead to incorrect transaction processing or vulnerability to double spending.
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    Explanation:
    immutable variables are assigned once during deployment and can’t be changed afterward. They are more gas-efficient than regular storage variables.
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    Explanation:
    Modifiers are used to add conditional logic like access control to functions. They prevent code repetition and keep logic clean.
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    Explanation:
    Ethereum popularized smart contracts and allowed developers to build decentralized apps.
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  • Difficulty - Medium
    Total Plays - 29
    Allowed Time - 10 sec
    Best time - 1.999 sec

    Decentralized exchanges:

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    Explanation:
    Decentralized exchanges (DEXs) operate using smart contracts, which automatically execute trades without the need for intermediaries. This allows users to trade crypto directly from their wallets while maintaining control of their assets
  • Difficulty - Medium
    Total Plays - 25
    Allowed Time - 10 sec
    Best time - 1.883 sec

    Royalties in NFTs allow:

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    Explanation:
    Royalties in NFTs ensure that artists receive a percentage of sales every time their work is resold on secondary markets. This feature provides creators with ongoing income and supports long-term value for their digital art.
  • Difficulty - Medium
    Total Plays - 20
    Allowed Time - 10 sec
    Best time - 2.226 sec

    Which is NOT a Web3 wallet?

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    Explanation:
    Google Drive is a cloud-based storage service that lets you store, access, and share files online. It offers seamless integration with Google Workspace apps like Docs, Sheets, and Slides.
  • Difficulty - Medium
    Total Plays - 18
    Allowed Time - 10 sec
    Best time - 1.448 sec

    Gas in Ethereum is measured in:

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    Explanation:
    Gwei is a smaller unit of ETH used to calculate gas costs.
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