Worksheetsblockchain
Total questions: 19
Worksheet time: 12mins
What does P2P stand for?
Password to Password
Peer to Peer
Product to Product
Private Key to Public Key
Did you understood Block chain
100%
50%
75%
below 30%
What is a node?
A type of cryptocurrency
A Blockchain
A computer on a Blockchain network
An exchange
Who created Bitcoin?
Satoshi Nakamoto
John Mcafee
Samsung
China
Where do you store your cryptocurrency?
Bank account
Exchange
Wallet
In your pocket
Where is the LEAST SAFE place to keep your cryptocurrency
In your pocket
On an exchange
On a hot wallet
At your work desk
What is a miner
A type of blockchain
An algorithm that predicts the next part of the chain
A person doing calculations to verify a transaction
Computers that validate and process blockchain transactions
Where can you buy cryptocurrency
A private transaction
An exchange
A Bitcoin ATM
All of the above
What should be chosen so that the generated hash ends in two zeros.
Nounce
Node
Hash
A wallet
A ................................ key is a string of numbers and letters
Bitcoin
Blockchain
Cryptocurrency
None of the above
A block contains a timestamp, a reference to the previous block, the transactions and the (a) that had to be solved before the block went on the Blockchain.
What are smart contracts?
define the rules and penalties around a specific agreement
define the procedure of using wallet
define the standard operational procedures
A blockchain is secured by
PIN code
'hash' code
password
login
The process of encrypting and decrypting information.
Decentralized Application
Cryptocurrency
Block
Cryptography
What does proof of stake stand for ?
Proof of stake is a system of validation invented by Hal Finney, that enables bitcoin to achieve distributed consensus.
Proof of stake is the consensus algorithm used by bitcoin.
Proof of stake is a type of consensus algorithm by which a cryptocurrency blockchain network aims to achieve distributed consensus. In PoS-based cryptocurrencies the creator of the next block is chosen via various combinations of random selection and wealth or age.
Proof of stake is cryptographic hash-based proof-of-work algorithm that requires a selectable amount of work to compute, but the proof can be verified efficiently.
What are the potential applications of blockchain
voting
settling trades
health records
fund transfers
Difference between P2P(Peer-to-Peer) network and decentralized network
P2P networks are more difficult to setup
P2P network has direct connection between each pair while in decentralized networks this is always true
P2P networks are more stable than decentralized network
All P2P network are decentralized and vice-versa
Every Blockchain based account has a public-private key pair
True
False
How does Blockchain achieve high availability?
Complex Protocol
Decentralization
Nodes never go down(offline)
Implemented on the internet
