Certified Blockchain Solutions Architect (CBSA) — Question 45

What type of attack would be considered a very large flaw in public blockchains such as Bitcoin's Blockchain where the majority of hashpower could possibly be controlled thru an attack?
What is the specific attack Bitcoin could be exposed to?

Answer options

• A. 51% Attacks
• B. Tether Token Hack
• C. DDoS Attack
• D. BIP attack
• E. Parity Wallet Attack

Correct answer: A

Explanation

A 51% Attack occurs when an entity gains control of more than 50% of the network's hashpower, allowing them to manipulate transactions and double-spend coins. The other options, such as the Tether Token Hack, DDoS Attack, BIP attack, and Parity Wallet Attack, involve different vulnerabilities or attack vectors that do not specifically relate to the control of hashpower in a blockchain network.