Font size
WorksheetsBlockchain
Total questions: 40
Worksheet time: 29mins
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
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 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
What is a blockchain?
A distributed ledger on a peer to peer network
A type of cryptocurrency
An exchange
A centralized ledger
Who is the creator of Ethereum?
Vitalik Buterin
Jihan Wu
Satoshi Nakamoto
Roger Ver
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
Look up the definition of "pseudonym". What is the meaning?
a fictitious name
a bitcoin
a country
a food
Who adds a block to the chain?
miner
Node
Block Validator
None
_______is the process of solving complex mathematical equation?
Hash Matching
Genesis
Proof of work
Proof of stake
Immutable data means?
Data can be easily modified.
Data is Vulnerable.
Data is difficult is to change
Data can be erased.
A block also contains hash of the________.
block before it.
block after it.
block above it.
block below it.
Which among these is a principle of Blockchain?
Hash system
Nodes
Decentralization
Proof of Stake/Work
The only efficient use of Blockchain is cryptocurrency.Do you agree?
MAYBE IN CAPS
No
yes
I don't know
What is Node in Blockchain?
Part of a plant.
System connected to the Blockchain network.
Element of a chain.
Building blocks of block.
If E-mail is to internet,Bitcoin is to ?
Money
Cryptocurrency
Hash
Blockchain
What does P2P stand for?
Peer to Peer
Private key to Public key
Pineapple to Pizza
Password to Profile
What incentive do miners get for solving equations?
Praise
Access to classified information.
Get computer parts in discount
Rewards usually in terms of crpytocurrency.
Which among the following principle makes it difficult to data to get changed?
Decentralization
Transparency
Immutability
I don't know what am i doing here.
The process of encrypting and decrypting information.
Decentralized Application
Cryptocurrency
Block
Cryptography
Which of this is NOT a characteristic of a blockchain network?
Consensus
Immutability
Finality
Provenance
Expensive
The blockchain contains verified proof of .....
transactions
earnings
names and addresses
cost and location
Bitcoin and blockchain are basically the same.
True
False
What are the potential applications of blockchain
voting
settling trades
health records
fund transfers
What are the potential benefits of smart contracts
high contracting, enforcement, and resilience costs
low contracting, higher reenforcement, and compliance costs
low contracting, enforcement, trust, compliance costs
low contracting, enforcement, safe backup, third parties
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
A blockchain is secured by
PIN code
'hash' code
password
login
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
How long is Bitcoin's block time, in minutes?
1 minute
2 minutes
5 minutes
10 minutes
What is necessary for Bitcoin?
bank
internet
government
oxygen
People who update the blockchain are called:
workers
miners
losers
scientists
What is the primary benefit of immutability ?
Increased efficiency
Tamper-proof
Scalability
Resiliency
What are the different hashes in block chain, select the valid ones
Transaction Hash
Private Hash
Root Hash
Block Hash
