WorksheetsC3.5 - Intro to Blockchain
Total questions: 21
Worksheet time: 13mins
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.
DLT stands for
Distributed Ledger Technology
Decentralised Ledger Timing
Decentralised Lost Trust
Examples of intermediaries. Choose more than one.
Notaries
Banks
Accountants
Blockchain
A ledger is a set of records showing transactions (movement of money and change in balance).
TRUE
FALSE
The ledger in blockchain is ________
Public
Private
Each block is made up of the following THREE elements.
Transactions
Data
Hash
Hash of previous block
This type of system allows you to securely make transactions with another user without the need of a third-party like a bank.
Decentralised system
Centralised system
This feature in blockchain allows everyone to see the transactions in the network.
Transparency
Trust
Tracking of data
Anything that is once entered into the blockchain network cannot be tampered with, i.e. cannot be altered or deleted.
Immutability
Decentralisation
Source of trust
What is this?
An old ledger
A stick
The basic principle of blockchain is that the mechanisms it uses to store data are unchangeable once recorded. Blockchain data is meant to be permanent, tamperproof and trustworthy.
TRUE
FALSE
The blockchain uses a P2P network architecture. What does this stand for?
Peer to Peer
PC to PC
Paired to Paired
