Blockchain in Distributed Systems Quiz

<p>Concentration of power</p> Signup and view all the answers

<p>Single point of failure</p> Signup and view all the answers

<p>Collect new transactions into a block</p> Signup and view all the answers

<p>Broadcast the hash of the block</p> Signup and view all the answers

<p>Stealing Bitcoins</p> Signup and view all the answers

<p>By exponentially reducing the probability</p> Signup and view all the answers

<p>Cryptographic enforcements</p> Signup and view all the answers

<p>Blockchain technology</p> Signup and view all the answers

<p>Sequence of hash-chained records</p> Signup and view all the answers

<p>Increased risk of compromise and control</p> Signup and view all the answers

<p>Past records become immutable</p> Signup and view all the answers

<p>To agree on the state of their transaction system</p> Signup and view all the answers

<p>Guaranteeing the integrity of data</p> Signup and view all the answers

<p>Ensuring all nodes agree on the state of the ledger</p> Signup and view all the answers

<p>Validating transactions and new blocks</p> Signup and view all the answers

<p>All honest nodes agree on the same value and must be proposed by an honest node</p> Signup and view all the answers

<p>Guaranteeing that it is infeasible to find collisions</p> Signup and view all the answers

<p>Protection against double-spending, Anonymity, Offline functionality, Real value, Decentralization</p> Signup and view all the answers

<p>It requires a clever combination of cryptographic primitives and computing paradigms.</p> Signup and view all the answers

<p>Bitcoin is controlled by the network, while traditional banking systems are controlled by a central authority.</p> Signup and view all the answers

<p>Lower fees are typically associated with Bitcoin transactions.</p> Signup and view all the answers

<p>Bitcoin transactions offer higher security compared to traditional banking systems.</p> Signup and view all the answers

<p>Distributed consensus enables nodes to agree on the state of the system in a decentralized manner.</p> Signup and view all the answers

<p>A decentralized database in blockchain technology means that the data is spread across multiple entities, with no single owner or controller, ensuring no central point of failure.</p> Signup and view all the answers

<p>Blockchain chains blocks in chronological order by cryptographically linking each block to the previous one using hash functions.</p> Signup and view all the answers

<p>The blockchain public ledger keeps a shared record of all transactions across a vast network of users without the need for a central authority.</p> Signup and view all the answers

<p>The blockchain network decreases the probability of double-spending by requiring multiple confirmations from different nodes before considering a transaction valid.</p> Signup and view all the answers

<p>The main advantage of a decentralized e-cash system like Bitcoin is that it eliminates the need for intermediaries, allowing for peer-to-peer transactions.</p> Signup and view all the answers

<p>Nodes in a blockchain network express acceptance of a new block by validating its transactions and adding it to their own local copy of the blockchain.</p> Signup and view all the answers

<p>It ensures that the transaction history is permanently recorded and secured against tampering.</p> Signup and view all the answers

<p>Electronic medical records stored in a blockchain can be accessed and updated via biometrics, democratizing patient data.</p> Signup and view all the answers

<p>Microtransactions of data sent to the blockchain are validated and re-dispersed to the grid, ensuring secure payments.</p> Signup and view all the answers

<p>By utilizing a distributed ledger, companies gain visibility into shipment tracking, deliveries, and progress among suppliers.</p> Signup and view all the answers

<p>Blockchain offers promise in storing personal identity information, criminal backgrounds, and 'e-citizenship' authorized by biometrics.</p> Signup and view all the answers

<p>Cryptocurrencies like Bitcoin utilize blockchain as a decentralized ledger for recording transactions and maintaining transparency.</p> Signup and view all the answers

<p>Message Digest, Preimage Resistant, Collision Resistant</p> Signup and view all the answers

<p>Decentralization aspects such as ledger maintenance, transaction validation authority, new bitcoins creation, rules change determination, and exchange value acquisition of bitcoins.</p> Signup and view all the answers

<p>Distributed Consensus</p> Signup and view all the answers

<p>A protocol where all honest nodes agree on the same value, proposed by an honest node.</p> Signup and view all the answers

<p>Termination and agreement by all honest nodes on the same value proposed by an honest node.</p> Signup and view all the answers

<p>It ensures that all nodes agree on the state of the ledger and validate transactions.</p> Signup and view all the answers

<p>50 bitcoins</p> Signup and view all the answers

<p>Laszlo Hanyecz</p> Signup and view all the answers

<p>Mt.Gox</p> Signup and view all the answers

<p>Centralization vs. decentralization</p> Signup and view all the answers

<p>Announced the vision for a decentralized digital currency</p> Signup and view all the answers

<p>BitGold</p> Signup and view all the answers