NFT Study Guide 2026
Everything you need to pass the NFT exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 NFT Exam Format at a Glance
📚 NFT Topics to Study (73)
✍️ Sample NFT Questions & Answers
1. Which standard's balanceOf takes only an address and returns a count of owned tokens?
ERC-721 balanceOf(owner) returns how many tokens an address owns; ERC-1155 also needs a token ID.
2. Why might a developer prefer a payment-splitter contract as the EIP-2981 receiver?
Setting the receiver to a splitter contract lets a single royalty payment be divided among several beneficiaries.
3. A marketplace honoring EIP-2981 typically calls royaltyInfo at what point?
Compliant marketplaces query royaltyInfo at sale time to determine how much to pay the receiver.
4. What is a reentrancy risk when handling NFT purchases with ETH refunds?
An external call before updating state can let a malicious receiver re-enter and exploit stale balances.
5. Which is the most popular NFT marketplace?
OpenSea is widely recognized as the largest and most popular NFT marketplace globally. It supports a vast array of NFTs across multiple blockchains, offering a comprehensive platform for buying, selling, and discovering digital collectibles, art, and gaming items. Its extensive user base and wide selection make it a dominant force in the NFT ecosystem.
6. What is the time it takes for NFT transactions to settle?
NFT transactions typically settle almost instantly, designated as T+0. This means the transaction is finalized on the same day it is initiated, as soon as it is confirmed on the blockchain. This real-time settlement is a characteristic feature of blockchain technology, differing from traditional financial transactions that may take days.