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Free CBDE – BTA Certified Blockchain Developer - Ethereum Practice Test Question

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Showing 4–6 of 10 questions

Question 4

.Require is used:

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    to check internal states that should never happen.
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    to check input arguments from users.
Question 5

When solidity is compiled then also Metadata is generated:

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    the Metadata contains the ABI Array, which defines the Interface to interact with the Smart Contract. Metadata can also contain the address of the smart contract when it gets deployed.

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    metadata contains the address, and the size of the smart contract. The ABI Array is generated externally upon deploying the smart contract.

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    the ABI array and the Metadata are not generated when solidity is compiled to bytecode, its generated by a migration software which deploys the smart contract on the blockchain.

Question 6

When using assert to check invariants and it evaluates to false:

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    all gas is consumed.

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    all remaining gas is returned.