PYTHON BLOCKCHAIN QUIZ DESCRIPTION Total Questions −30 00 Max Time − 15:00 Transactions per second (TPS) for Proof-of-Work Blockchain are approximate? 24K per second 175K per second Only limited to the number of nodes on the network 7-15 per second Did Blockchain enable a centralized or a decentralized system for the exchange of value? Decentralized Centralized None of the above Can't say A blockchain enables peer-to-peer transfer of digital currency without any intermediaries such as banks. False True For the simple symmetric key example discussed in the lecture, it is easy to derive the secret key from the encrypted data. True False Who introduced the digital online cryptocurrency known as Bitcoin? Satoshi Nakamoto Nick Szabo Wei Dai Hal Finney What are mechanisms that allow tokens and other digital assets from one blockchain to be securely used in a separate blockchain called? Parachains Blockbabies Sidechains Altchains Where is a Blockchain’s central server? Where the blockchain is created Located with the owner of the server There is no central server, it is distributed Ordered Node What is the purpose of a Nonce? Follows nouns A Hash Function Prevents Double Spending Send Information to the Blockchain Network BATM stands for _____. Bounded access transaction machine Broadcast ATM Bitcoin ATM Blockchain ATM Blockchain has ____ versions. 2 3 4 5 A popular public-private key implementation known as Rivest-Shamir Adelman (RSA) algorithm is used for the Bitcoin and Ethereum Blockchain. False True Blockchain is a ______ ? Push technology Pull technology Both push and pull technology None of the above Does a transaction generate new UTXOs for transferring the amount specified in the input UTXOS? False True How often does the Bitcoin ledger reconcile? Every day Every 3 months Every 3 minutes Every 10 minutes Blockchain networks are much _____ and deal with no real single point of failure. Simpler Easier to scale Convenient Faster The transaction Merkle Tree root value in a Bitcoin block is calculated using, Hash of transactions Previous block's hash Number of transactions None of the above What is Not a Ledger type considered by users in Blockchain? Distributed Ledger Decentralized Ledger Both A and B None of these A blockchain is a type of? Object Database Table View Smart Contract characteristics do not include: Alterable Fast and cost-effective A high degree of accuracy Transparency What biblical name is given to the first block in blockchain? Primal Origin Genesis Ada _________ hosts the software needed for transaction initiation, validation, mining, block creation, and smart contract execution. External Account EVM Ethereum full node Smart Contract A contract in size is restricted to, 24576 Bytes 1 Kilo Bytes 23575 Bytes No limit Which of the following problems did Blockchain solve for cryptocurrencies? Anonymity Double Spending Destination of currencies None of the above Bitcoin is a cryptocurrency, which is an application of Blockchain. True False Blockchain can perform user transactions without involving any third-party intermediaries. With the help of the third party Without involving any third party Without involving any owned Without involving any authenticated What is Proof of Stake? A certificate needed to use the blockchain A password needed to access an exchange How private keys are made A transaction and Block Verification Protocol Bitcoin is based on _________ blockchain. Private Public Public Permissioned Permissioned What type of hash function is used, when there is a variable number of items to be hashed, such as the many state changes in a block? Complex hash Simple Hash Tree-structured Hash Either Which is/are the applications of Blockchain? Cross-border payments Anti-money laundering tracking system Supply chain and logistics monitoring All the above Bitcoin is created by ______. Saifedean Ammius Satoshi Nakamoto Vitalik Buterin None of these Previous Next Total Question16 Wrong Answer13 Right Answer13
