WorksheetsBlockchain Basicss
Total questions: 22
Worksheet time: 13mins
Founder of Ethereum?
satoshi nakamoto
Vitalik Buterin
Brendan Eich
Satoshi Lite
Father if Bitcoin
Satoshi Nakamoto
Vitalik Buterin
Brendan Eich
Satoshi Lite
In Blockchain
Can create block
Can edit data in block
Delete block
Can read data from block
Block header contains
Nonce
Block hash
Previous block hash
Difficulty level
Block hash is calculated using
Block header + Block body
Block body only
Block Header only
None
Example of public blockchain
Factom
Hyperledger
Ethereum
Ripple
In public blockchain, Transactions and data are viewable by______ and Participant identity can be _______
only admins, anonymous
all participants,
known
all participants, anonymous
only admins,
known
Which key can be shared
Public key
Private key
Both
None
Public key can be generated from
Master key
Private key
Secret Key
None
Private key can be generated from public key
True
False
Symmetric Cryptography is faster than Asymmetric Cryptography
True
False
Message Encryption will be done using
Senders private Key
Senders public key
Receivers public key
Receivers Private key
Message signing will be done using
Senders Public key
Senders Private key
Receivers Public key
Senders Private Key
Hash function returns
Fixed length response for any data
Variable length response for any data
Length is same as input
None
Advantages of Merkle tree
Integrity
Get required hash
Data validation
Fast and easy
proof computation
_____ is used to get required hash
Difficulty level
Markel Tree
Nonce
Previous BLock Hash
Nonce is a _____
Fixed value
Random value
Increase by 1 for each block
None
What is role of minors in blockchain
Verify the new Bitcoin transactions
Record transactions in the public ledger
Both
None
All the transactions in blockchain are available in ______ to pick for block creation
SQL Database
Memory Pool
Cloud
None
Which is low cost
and low energy consuming
algorithm
PoW
PoS
Both
In PoW (proof of work), minors will get
Transaction Fee
Mining reward
Fixed reward
No reward
Select the correct statement in Bitcoin
Current reward is 6.25 BTC
After every 210,000 blocks mined, or roughly every four years, the block reward given to Bitcoin miners for processing transactions is cut in half
Mining difficulty adjustment occurs every 2,016 blocks
Bitcoin using PoS consensus algorithm
