Ответы на SuperDao
1. What is a blockchain?
A distributed database that maintains a continuously growing list of ordered records called blocks
2. What is the most accurate description of a block?
A collection of transactions on a chain
3. What is a hash?
A fixed number of characters produced by an algorithm and used to secure blockchain transactions
4. Which of these statements about PoS is true?
Validators check transactions and add new blocks to the blockchain
5. How does the node infrastructure work?
It allows programs to use information from the blockchains faster
6. What is the purpose of a bridge?
Interoperability among blockchains
7. What is the main purpose of sharding?
Blockchain scalability
8. Which of these is not a blockchain?
Nansen
9. What is a smart contract?
A program that runs on a blockchain when predetermined terms and conditions are met
10. Which language is native for smart contracts development on Solana?
Rust
11. Which of these statements about Ethereum and Polygon are true?
Both are EVM compatible
12. Which tool allows smart contracts to monitor data from the real world?
Oracle
13. What is a DAO?
A smart contract/group of smart contracts describing organizations, their membership system, tokens, NFTs, and wallets governance
14. What’s the idea behind the “code is law” concept?
Code provides the rules for how broader society interacts in cyberspace
15. What can you not do with an NFT?
Use it as a stablecoin
16. What is a whitelist?
A list of wallets or contract addresses that will receive digital assets or tokens
17. What is an NFT marketplace?
A platform that makes it simple to trade and buy NFTs and see their ownership
18. Which of these is a standard for collections of unique NFTs?
ERC-721
19. Which standard combines the functions of ERC-20 and ERC-721?
ERC-1155
20. What is minting?
The process of creating a new NFT on chain
21. What is a token?
An asset built on an existing blockchain using smart contracts
22. How much do you need to pay for a transaction, assuming that the transaction sent to Ethereum requires 21 000 gas and 1 gas costs 3 Gwei?
0,000063 ETH
23. Which of these is a stablecoin?
DAI
24. What is Wrapped Bitcoin (WBTC)?
A token
25. Which of these is a real on-chain market indicator?
Coin Days Destroуer
26. Why is the Howey test important for crypto?
It determines whether a cryptocurrency transaction qualifies as an "investment contract" and is therefore subject to U.S. securities laws, meaning it will be highly regulated
27. What is the safest private key storage?
Hardware wallet
28. Who has the keys to a non-custodial wallet?
The users themselves keep both public and private keys
29. What problem does Gnosis Safe solve?
Security of digital assets if a private key is lost
30. What is the main trade-off for having a non-custodial wallet?
It is impossible to recover digital assets if a private key is compromised
31. What wallet address is compatible with Ethereum?
0xc098b2a3aa256d2140208c3de6543aaef5cd3a94
32. Which of these is a centralized token exchange (CEX)?
Kraken
33. What is Lightning Network used for?
For blockchain scalability