Blockchain and Healthcare Lesson 4

What is the primary function of blockchain technology?

• To eliminate the need for any form of security in transactions.

• The primary function of blockchain technology is to provide a secure and transparent decentralized ledger for recording transactions.

• To create a centralized database for all transactions.

• To provide a platform for social media interactions.

How does blockchain improve the healthcare supply chain?

• Blockchain improves the healthcare supply chain by ensuring transparency, security, and traceability of medical supplies.

• Blockchain slows down the supply chain process.

• Blockchain limits access to medical supply data.

• Blockchain increases costs by adding intermediaries.

What are some current issues in the healthcare supply chain?

• Expansion of healthcare facilities

• Disruptions from COVID-19, shortages of medical supplies, increased pharmaceutical demand, logistical challenges, and rising costs.

• Increased access to telemedicine

• Improved patient outcomes

Why is a running ledger important in blockchain?

• A running ledger is important in blockchain for ensuring transparency, security, and preventing fraud.

• A running ledger is used to store personal information of users.

• A running ledger is primarily for increasing transaction speed.

• A running ledger is only important for financial transactions.

What role do nodes play in the blockchain network?

• Nodes are responsible for user account management.

• Nodes store only transaction history without validation.

• Nodes validate transactions, maintain the blockchain, and ensure network consensus.

• Nodes create new cryptocurrencies.

How is data validated in a blockchain system?

• Data is validated through user approval only.

• Data is validated by random selection of nodes.

• Data is validated through consensus mechanisms and cryptographic verification.

• Data is validated using traditional database methods.

What are the potential benefits of using blockchain in healthcare?

• Improved data security, interoperability, supply chain efficiency, smart contracts, and patient consent management.

• Reduced access to medical records

• Higher costs for medical procedures

• Increased patient wait times

How does blockchain ensure the security of transactions?

• Transactions are secured by physical locks and keys.

• Blockchain relies solely on user passwords for security.

• Blockchain uses a central authority to verify transactions.

• Blockchain ensures transaction security through decentralization, cryptographic hashing, consensus mechanisms, and immutability.

What is a block in the context of blockchain technology?

• A block is a software application that manages user accounts.

• A block is a type of cryptocurrency used for transactions.

• A block is a physical container for storing blockchain nodes.

• A block is a data structure in blockchain that contains a list of transactions and is linked to the previous block.

Why is consensus important in a blockchain network?

• Consensus is only needed for financial transactions.

• Consensus is a method to increase transaction fees.

• Consensus allows for unlimited data storage on the blockchain.

• Consensus ensures agreement among participants, maintaining integrity and security in the blockchain.