Method of Extracting Data from Blockchai

What is the primary purpose of a blockchain explorer?

A) To mine new blocks
B) To create smart contracts
C) To explore and analyze blockchain data
D) To generate private keys

Which information can you find using a blockchain explorer?

A) The current price of Bitcoin
B) Transaction details, addresses, and blocks
C) The total supply of a cryptocurrency
D) Social media posts related to blockchain

What does a transaction hash (TXID) represent in a blockchain explorer?

A) The sender’s public key
B) The recipient’s wallet address
C) The unique identifier for a transaction
D) The transaction timestamp

Which blockchain explorer is commonly used for viewing Bitcoin transactions?

A) Etherscan
B) BscScan
C) Blockchain.com
D) Blockchair

What does a block explorer display about individual blocks?

A) The total number of transactions in the block
B) The timestamp when the block was mined
C) The list of transactions within the block
D) The miner’s reward

How does a blockchain explorer help verify transactions?

A) By creating new blocks
B) By displaying transaction confirmations
C) By calculating transaction fees
D) By showing transaction details and confirmations

What is the role of a blockchain explorer in ensuring transparency?

A) It validates smart contracts
B) It displays the total network hashrate
C) It allows users to audit blockchain data
D) It generates new wallet addresses

Which blockchain explorer provides insights into Ethereum transactions and smart contracts?

A) BscScan
B) Etherscan
C) Blockchair
D) Blockchain.info

What type of information can you find by searching a wallet address in a blockchain explorer?

A) The owner’s name
B) The transaction history associated with the address
C) The private key
D) The wallet balance in USD

Why are blockchain explorers considered essential tools for crypto enthusiasts and researchers?

A) They allow users to mine new coins
B) They provide real-time price updates
C) They offer transparency and insights into blockchain data
D) They allow users to create new wallets

What is the primary purpose of a Web3 Data API?

A) To mine new blocks
B) To create smart contracts
C) To explore and analyze blockchain data
D) To generate private keys

Which type of data can you retrieve using a Web3 Data API?

A) Real-time crypto prices
B) Social media posts
C) Stock market data
D) Weather forecasts

What role do Web3 APIs play in decentralized applications (dApps)?

A) They allow dApps to mine new tokens
B) They provide real-time data for dApps
C) They create smart contracts for dApps
D) They generate private keys for dApps

Which Web3 API provides information about hidden gems and real-time token analytics?

A) Discovery API
B) NFT API
C) Price API
D) Token API

What type of data can you access using the Wallet API?

A) Real-time crypto prices
B) Transaction history associated with wallet addresses
C) Social media posts
D) Stock market data

Which blockchain networks are supported by Moralis’s Web3 Data APIs?

A) Ethereum only
B) Ethereum, Binance Smart Chain, and Polygon
C) Bitcoin and Ethereum
D) Solana and Cardano

What advantage does Moralis’s NFT API offer to developers building portfolio dApps?

A) Real-time crypto prices
B) Scalability to millions of users
C) Querying the blockchain without worrying about scaling
D) Smart contract execution

Which Web3 API provides block data, transaction logs, and raw data?

A) Blockchain API
B) DeFi API
C) NFT API
D) Price API

What does the “Why did it move” API provide?

A) Real-time crypto prices
B) The reason why a coin moved up or down
C) Social media sentiment analysis
D) Transaction history

Why are Web3 Data APIs essential for developers and researchers?

A) They allow mining new tokens
B) They provide real-time weather data
C) They enable informed decision-making and analysis
D) They create smart contracts

What is the primary function of Command-line Tools in the context of blockchain?

A) To design user interfaces
B) To extract and interact with blockchain data
C) To create new blockchain networks
D) To mine cryptocurrency

Which Command-line Tool is widely used for interacting with Ethereum nodes?

A) Truffle
B) Geth
C) Parity
D) Web3.js

What is a common use case for Command-line Tools in blockchain technology?

A) Writing smart contracts
B) Performing technical analysis on cryptocurrencies
C) Managing and monitoring blockchain nodes
D) Trading cryptocurrencies

Which tool can be used to test smart contracts on the Ethereum blockchain?

A) Geth
B) Parity
C) Truffle
D) Curl

What is the purpose of using curl in the context of blockchain explorers?

A) To compile smart contracts
B) To make HTTP requests to blockchain APIs
C) To mine new blocks
D) To generate new wallet addresses

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