NFT On-Chain Royalties (EIP-2981) 3

Question 1

In OpenZeppelin's ERC2981 contract, what does _setDefaultRoyalty set?

Accepted Answer

A collection-wide royalty receiver and fee

Answer

The royalty for a single token only

Answer

The contract owner

Answer

The maximum supply

Question 2

How does OpenZeppelin let you override royalties for one specific token?

Accepted Answer

_setTokenRoyalty

Answer

_mintWithRoyalty

Answer

_overrideFee

Answer

setTokenURI

Question 3

In OpenZeppelin's implementation, what is the denominator for the fee fraction by default?

Accepted Answer

10000 (basis points)

Answer

100

Answer

1000000

Answer

256

Question 4

A fee numerator of 250 with the default denominator represents what royalty?

Accepted Answer

2.5%

Answer

25%

Answer

0.25%

Answer

250%

Question 5

What happens if you set a fee numerator greater than the denominator in OpenZeppelin's ERC2981?

Accepted Answer

The transaction reverts with a royalty-too-high error

Answer

It silently caps at 100%

Answer

It wraps around to 0%

Answer

It is allowed and exceeds the sale price

Question 6

When deleting a token-specific royalty, which OpenZeppelin function is used?

Accepted Answer

_resetTokenRoyalty

Answer

_clearRoyalty

Answer

_burnRoyalty

Answer

_removeFee

Question 7

To expose EIP-2981 alongside ERC-721 in OpenZeppelin, what must supportsInterface do?

Accepted Answer

Override and call super to combine both interface checks

Answer

Return true for all inputs

Answer

Only check the ERC2981 ID

Answer

Be removed entirely