NFT Gas Optimization for NFTs

Question 1

Which ERC standard is more gas-efficient when minting large quantities of fungible or semi-fungible tokens?

Accepted Answer

ERC-1155

Answer

ERC-20

Answer

ERC-721

Answer

ERC-777

Question 2

What is 'lazy minting' in NFT development?

Accepted Answer

Deferring on-chain minting until the first purchase or claim

Answer

Minting tokens without any metadata

Answer

Minting tokens on a testnet before mainnet

Answer

Pre-minting all tokens at contract deployment

Question 3

Which storage approach costs the least gas for associating large data with an NFT?

Accepted Answer

Storing only a content-addressed URI pointing to off-chain storage

Answer

Storing the full data in a contract mapping

Answer

Storing the full data in a contract array

Answer

Emitting the data as an event log

Question 4

What does the ERC-721A standard optimize compared to standard ERC-721?

Accepted Answer

Lowering gas costs for batch minting sequential token IDs

Answer

Reducing the size of NFT images

Answer

Enabling cross-chain NFT transfers

Answer

Adding built-in royalty enforcement

Question 5

Which Solidity technique reduces gas costs by skipping overflow/underflow checks for a counter known to be safe?

Accepted Answer

using unchecked {} blocks

Answer

using SafeMath

Answer

using assembly

Answer

using immutable variables

Question 6

Why is packing multiple small variables into a single storage slot beneficial in NFT contracts?

Accepted Answer

It reduces the number of SSTORE operations, lowering gas costs

Answer

It increases readability

Answer

It allows storing more metadata on-chain

Answer

It speeds up off-chain indexing