Blockchain Quiz

Which different types of networks did we cover in the lecture?

• Clustered network
• Centralized network
• Distributed network
• Decentralized network

What is the goal of Proof of Work (PoW)?

• Securing the network through the use of cryptography
• Making the network anonymous

• Shows how a system may be protected or compromised
• To say which data is being written down by each miner

What is the hash rate?

• Measure of the total energy spent by miners on Proof of Work
• Measure of the total hash rate produced by miners on Proof of Work
• Measure of the total miners that are included to find a hash value

What is the main goal of bitcoin mining?

• Prevent double-spending of digital data
• Reduce transaction fees for a higher reward
• Support the technology development

Complete the sentence: bitcoin transactions are … ?

• "routed"
• "sent"
• "converted"

In the bitcoin network only final balances are written to the blockchain.

• True
• False

In the lightning network you have to create invoices to sent the payment.

• True
• False

What is the smallest amount you can send in the lightning network?

• One satoshi
• One millisatoshi
• One microsatoshi
• One sato

What is NOT an advantage of the lightning network?

• Tiny fees
• Higher privacy
• Central regulation
• Nearly instant payments

Which storage type should you use for the highest security standards?

• Hot storage
• Warm storage
• Cold storage
• Live storage