WorksheetsIntro to Blockchain
Total questions: 15
Worksheet time: 8mins
What is a blockchain?
A distributed ledger on a peer to peer network
A type of cryptocurrency
An exchange
A centralized ledger
Bitcoin was first coined by
Satoshi Nakamoto
Blockchain
Santhosh Samsung
China
The process of encrypting and decrypting information.
Decentralized Application
Cryptocurrency
Block
Cryptography
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
Each block of a Blockchain consists of which of the following?
A hash pointer to the previous block
Timestamp
List of transactions
All of the above
Once data entered into the blockchain can be
Unchanged
Modified
Tampered
Updated
Which feature is not supported by Blockchain Technology
Distributed Peer to Peer Network
Centralized Network
Immutable Ledger
Mining
Where is the bitcoin central server located?
Washington DC
Undisclosed Location
London
None of these
Are the parties involved in the block chain transaction anonymous. Answer True or False?
True
False
A blockchain is secured by
PIN code
'hash' code
password
login
What is the task of miners in a blockchain network?
Miners act as a single third party to aggregate records and provide trust in the network by the miners’ authority.
Miners are computers that allow access to the blockchain, ensuring the number of corrupt nodes will stay low.
Miners are nodes that compete for a reward by calculating the correct nonce to make a transaction possible.
Miners determine the consensus rules that should be followed and interfere when these rules are broken.
What are smart contracts?
define the rules and penalties around a specific agreement
define the procedure of using wallet
define the standard operational procedures
What are the advantages of private blockchain network?
Faster
Open & Transparent
Scalable
Slow
What are the potential applications of blockchain
voting
settling trades
health records
fund transfers
