How do smart contracts play a role in blockchain$-$based personal identity security?

a$.$

They provide a secure mechanism for storing sensitive data

b$.$

They enable automated verification and authentication processes

c$.$

They allow users to revoke access to their data at any time

d$.$

They increase transparency and accountability in data sharing

Which of the following is a potential use case for blockchain in logistics$?$

a$.$

Tracking shipments in real$-$time

b$.$

Automating customs clearance

c$.$

Reducing paperwork and administrative tasks

d$.$

All of the above

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How does blockchain improve supply chain visibility in logistics$?$

a$.$

By enabling real$-$time tracking of goods

b$.$

By reducing the need for intermediaries

c$.$

By providing a transparent and immutable record of transactions

d$.$

By automating key logistics processes

What type of cryptocurrency is commonly used in money transfer via blockchain?

a$.$

Stablecoins

b$.$

Bitcoin

c$.$

Ethereum

d$.$

Ripple

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What is the main advantage of using stablecoins in blockchain$-$based money transfer?

a$.$

They are highly volatile, which can result in large profits

b$.$

They are backed by a stable asset, reducing the risk of price fluctuations

c$.$

They can only be used for specific types of transactions

d$.$

They are not widely accepted by merchants

What is the benefit of using blockchain technology in smart contracts for healthcare?

a$.$

It provides a centralized database for patient information

b$.$

It ensures real$-$time data analytics for healthcare providers

c$.$

It offers enhanced security and privacy for patient data

d$.$

It simplifies the process of medical billing and insurance claims

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How do smart contracts and blockchain technology improve healthcare provider$-$patient relationships?

a$.$

By increasing trust and transparency in healthcare transactions

b$.$

By reducing the need for in$-$person appointments

c$.$

By providing patients with immediate access to medical records

d$.$

By enabling remote patient monitoring and care