Types of Blockchain Networks and Their Security: Is Blockchain Safe?

Test Your Knowledge

1. What is a key feature of public blockchains?

A) They are controlled by a central authority

B) They are open to anyone who wants to join

C) Transactions are only visible to selected participants

D) They offer faster transaction speeds than private blockchains

2. What is a potential security risk in blockchain technology?

A) Lack of transparency

B) 51% attacks

C) Centralization of the network

D) No use of cryptography

3. How can blockchain security be improved?

A) By reducing the number of participants in the network

B) By eliminating decentralization

C) By implementing Layer 2 solutions

D) By using centralized consensus mechanisms