NFT ERC-721 vs. ERC-1155 Standards 4

Question 1

Both ERC-721 and ERC-1155 rely on which standard for interface detection?

Accepted Answer

ERC-165

Answer

ERC-165 supportsInterface lets contracts advertise which standards they implement.

Question 2

What does setApprovalForAll do in both standards?

Accepted Answer

Grants or revokes an operator control over all of the caller's tokens

Answer

setApprovalForAll authorizes an operator to manage all of a holder's tokens at once.

Question 3

Which standard supports per-token single-approval via approve(address, tokenId)?

Accepted Answer

ERC-721

Answer

ERC-721 offers approve for a specific tokenId, while ERC-1155 only uses operator approvals.

Question 4

An artist mints a 1-of-1 artwork with rich provenance and per-token metadata. Which standard is most conventional?

Accepted Answer

ERC-721

Answer

ERC-721 is the conventional choice for unique 1-of-1 collectibles with distinct metadata.

Question 5

In ERC-1155, what happens to a token ID when its total supply is burned to zero?

Accepted Answer

That ID simply has zero balance and can often be re-minted by logic

Answer

Burning to zero leaves the ID with no supply; re-minting depends on the contract's logic.

NFT Development Practice Test