C3.5 - Intro to Blockchain

Each block in a blockchain consists of which of the following? HINT: you need to choose more than one.

• A hash pointer to the previous block

• Timestamp

• List of transactions

• Name and surname of sender

What is a genesis block?

• The first block of a Blockchain

• A famous block that hard coded a hash of the Book of Genesis onto the blockchain

• The first block after each block halving

• The 2nd transaction of a Blockchain

Once data is entered into the blockchain, it can be modified/tampered/updated.

• TRUE

• FALSE

Which feature is NOT supported by Blockchain Technology?

• Distributed Peer to Peer Network

• Centralized Network

• Immutable Ledger

• Open Decentralised Database

What is a bitcoin?

• Programming Language

• England's Currency

• A Digital Currency

• None of the Above

How are "bitcoins" produced?

• Governments supporting the "bitcoin" currency

• Computers using their processing power to facilitate and store transactions.

• Mines in the ground

• All of the Above

The process of encrypting and decrypting information.

• Decentralized Application

• Cryptocurrency

• Block

• Cryptography

What is a bitcoin?

• Programming Language

• England's Currency

• A Digital Currency

• None of the Above

The "blockchain" is data that copied across thousands and thousands of computers worldwide

• True

• False

Which of the following better describes what blockchain is?

• Blockchain is a shared, immutable ledger that facilitates the process of recording transactions and tracking assets in a business network.

• Blockchain is a costly, protected ledger that simulates the process of formulating transactions, so it sells assets in a business network.