Block Quiz

According to the video, what is a blockchain?

• A centralized database managed by a single entity.

• A digital ledger spread across thousands of computers.

• A type of cryptocurrency like Bitcoin or Ethereum.

• A private network used only by banks.

What happens to a block of transactions once it fills up on a blockchain?

• It is deleted to save space.

• It is locked with cryptographic proof and linked to the previous one.

• It is sent to a central authority for final verification.

• It is temporarily stored until a new network is created.

Are you enjoying the video lesson?

• Yes

• No

What is the term for the agreement process required to add a new block to the blockchain?

• Validation

• Mining

• Consensus

• Hashing

Which two consensus mechanisms are mentioned in the video for verifying transactions and adding blocks to a blockchain?

• Proof of Identity and Proof of Authority

• Proof of Work and Proof of Stake

• Proof of Time and Proof of Space

• Proof of History and Proof of Burn

What is the core principle of blockchain technology highlighted in the video?

• Centralized control for maximum efficiency.

• Trusting intermediaries to manage transactions.

• Trust the math, not the middleman.

• Relying on a single, powerful server.