Ethereum Smart Contracts BBLC Practice Questions (Page 9)

Questions 41–44

1. 41application · medium

   A team is choosing a language for a new smart contract that will handle high-value financial transactions. They value security and simplicity over expressiveness. Which language should they choose?

   • ASolidity, because it is the most widely used and has the largest ecosystem of tools.
   • BPython, because it is readable and has a built-in Ethereum library.
   • CJavaScript, because it is familiar to the team and can be compiled to EVM bytecode.
   • DVyper, because it is designed to be more secure and auditable with a simpler syntax.
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2. 42foundation · easy

   Which component of a Solidity smart contract is used to emit logs that can be searched and accessed by external applications?

   • AModifiers
   • BEvents
   • CState variables
   • DFunctions
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4. 43foundation · easy

   How does a user typically interact with a deployed smart contract on Ethereum?

   • ABy sending a transaction to the contract's address that invokes one of its functions.
   • BBy creating a new contract that inherits from the original contract.
   • CBy directly modifying the contract's bytecode on the blockchain.
   • DBy sending an email to the contract's owner to request a change.
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5. 44foundation · easy

   What is required to deploy a smart contract to the Ethereum mainnet?

   • AA transaction from an externally owned account (EOA) with enough Ether to pay for gas.
   • BA minimum balance of 1,000 ETH in the deploying account.
   • CApproval from a central authority or consortium.
   • DA special deployment key that is only available to developers who have passed a certification.
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