Quiz on Distributed Ledger Technology and Blockchain

What does the term 'Consensus Mechanism' refer to?

• A type of digital currency

• A method for data encryption

• A method to achieve agreement in a decentralized network

• A central authority's decision-making process

Which consensus mechanism requires solving complex problems to validate transactions?

• Public Key Cryptography

• Merkle Trees

• Proof of Work

• Proof of Stake

What is a characteristic of a Permissionless Blockchain?

• It is open for anyone to participate

• It is used for private transactions

• Access is restricted to a select group

• It requires a central authority

What is the purpose of a cryptographic hash function?

• To encrypt data for secure communication

• To produce a unique output for a given input

• To create digital signatures

• To store data in a centralized database

Which of the following best describes a 'Full Node'?

• A node that contains only part of the blockchain

• A node that is not connected to the network

• A node that verifies transactions without storing data

• A node that contains a complete copy of the blockchain ledger

What is the CAP theorem concerned with?

• The limitations of distributed systems

• The types of cryptocurrencies

• The benefits of blockchain technology

• The structure of a blockchain

In the Byzantine Generals Problem, what is a key challenge faced by the parties involved?

• They must rely on a central authority

• They must coordinate actions without trust

• They have unlimited resources

• They can communicate freely without deception

What is a Smart Contract?

• A contract that requires a lawyer

• A self-executing contract with terms written in code

• A contract that is only valid in certain jurisdictions

• A traditional paper contract

Which of the following is a benefit of using blockchain technology?

• Increased centralization

• Slower transaction speeds

• Tighter security against tampering

• Higher transaction costs

What does 'Decentralization' in blockchain imply?

• Transactions are processed in a central location

• Data is stored in a single database

• Control is held by a single entity

• Control is distributed among participants