WorksheetsBIB quiz
Total questions: 15
Worksheet time: 5mins
Which factor makes blockchain resistant to data tampering?
Centralized oversight
Monthly Audits
Manual record-keeping
Cryptographic hashing and distributed consensus
Which of the following is an example of a Layer 2 blockchain solution?
Ethereum
Bitcoin
Cardano
Polygon
What is gas in the context of Ethereum?
Physical fuel for servers
A fee paid to execute transactions or smart contracts
A virus used to flow the blockchain
A reward for validators
Which type of blockchain is typically used by enterprises for internal purposes?
Public blockchain
Private blockchain
Decentralized finance blockchain
NFT blockchain
Which token standard is commonly used for NFTs on Ethereun
ERC-721
ERC-20
ERC-1155
BTC-20
Which element ensures immutability in blockchain?
Central Registry
Smart Contracts
Hash functions
Public announcements
How is consensus typically achieved in Proof of Stake (PoS)
By stake ownership and validation rights
By government approval
By computing power
By peer-to-peer messaging
Which of these is NOT typically a feature of DeFi platforms?
Middleman like banks
Lending and borrowing
Yield farming
Decentralized exchanges
What is the primary function of a blockchain oracle
Predict market trends
Create smart contracts
Secure the network with mining
Provide external data to smart contracts
What is a hash function used for in blockchain?
To compress data for faster transmission
To convert input data into a fixed-length output
To encrypt the entire blockchain
To mine new blocks faster
What does "P2P" stand for in blockchain networks?
Person-to-Person
Payment-to-Payment
Private-to-Public
Peer-to-Peer
What is the role of the nonce in Bitcoin mining?
To create private keys
To make wallets anonymous
To change the input to produce a desired hash
To manage peer connections
What does a blockchain use to link one block to the next?
The block's timestamp
The previous block's hash
a digital signature
A validator's vote
Which of these best describe a "token" in the context of blockchain?
A digital asset built on top of a blockchain
A private key used for wallet access
A small code that decrypts data
A protocol for mining
What is a DApp (Decentralized Application) ?
A regular app that connects to cloud servers
An application that controls blockchain mining
A application that runs on a blockchain without central authority
A browser extension for sending crypto
