ArtOfBlockChain
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    Explanation:
    Ethereum popularized smart contracts and allowed developers to build decentralized apps.
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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:
    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:
    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.
  • Difficulty - Medium
    Total Plays - 6
    Allowed Time - 10 sec
    Best time - 10 sec

    Which is a risk of using oracles?

    Tip: Click "Play" to reveal options and start playing.
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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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