NFT ERC-721 vs. ERC-1155 Standards 3

Question 1

How does ERC-1155 typically handle metadata URIs to support many tokens?

Accepted Answer

A single URI template with an {id} substitution placeholder

Answer

A unique hardcoded URI per token

Answer

No metadata is allowed

Answer

URIs stored only on-chain as strings

Question 2

In ERC-721, which event is emitted when ownership of a token changes?

Accepted Answer

Transfer

Answer

TransferSingle

Answer

URI

Answer

ApprovalForAll

Question 3

Which event does ERC-1155 emit for a single token transfer?

Accepted Answer

TransferSingle

Answer

Transfer

Answer

TransferBatch

Answer

Approval

Question 4

A game wants gold coins, potions, and unique swords in one contract. Which standard fits best?

Accepted Answer

ERC-1155

Answer

ERC-721

Answer

ERC-20

Answer

ERC-165

Question 5

What does ERC-1155's balanceOfBatch allow callers to do?

Accepted Answer

Query multiple owner/ID balance pairs in one call

Answer

Query one balance only

Answer

Mint tokens

Answer

Burn tokens in bulk

Question 6

Which standard's balanceOf takes only an address and returns a count of owned tokens?

Accepted Answer

ERC-721

Answer

ERC-1155

Answer

ERC-165

Answer

ERC-1820

Question 7

What is a key risk of using transfer instead of safeTransfer to an unaware contract?

Accepted Answer

Tokens may become permanently locked

Answer

Higher gas refunds

Answer

Automatic burning

Answer

Faster confirmation