Question 1

What is a blockchain primarily used for?

Accepted Answer

Recording transactions in a secure, decentralized ledger

Answer

Running internet speed tests

Answer

Sending emails

Answer

Storing images and videos

Question 2

Which was the first cryptocurrency built on blockchain technology?

Accepted Answer

Bitcoin

Answer

Litecoin

Answer

Dogecoin

Answer

Ethereum

Question 3

In blockchain, what is a 'block'?

Accepted Answer

A collection of transaction records bundled together

Answer

A security password

Answer

A mining computer

Answer

A network cable

Question 4

What does 'decentralized' mean in blockchain context?

Accepted Answer

Data is stored across multiple computers instead of one central server

Answer

Only one person controls the network

Answer

Data is stored only in one government database

Answer

Data is stored in a mobile app

Question 5

Which of these is a key feature of blockchain security?

Accepted Answer

Data is immutable once recorded

Answer

Passwords are not required

Answer

Data can be freely edited by anyone

Answer

Transactions are always anonymous and untraceable

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