WorksheetsBlockchain MCQs
Total questions: 10
Worksheet time: 5mins
What is Blockchain?
Centralized database
Distributed ledger technology
Programming language
Operating system
Which feature ensures data cannot be altered in Blockchain?
Transparency
Immutability
Scalability
Latency
Who introduced Bitcoin?
Vitalik Buterin
Elon Musk
Satoshi Nakamoto
Mark Zuckerberg
What is a block in Blockchain?
A type of virus
A group of transactions
A programming code
A hardware device
Which consensus algorithm is used in Bitcoin?
Proof of Stake
Proof of Authority
Proof of Work
Delegated Proof of Stake
What links blocks together in a Blockchain?
IP address
Hash value
Digital signature
Timestamp
Which of the following is a public Blockchain?
Hyperledger
Ripple
Ethereum
Corda
What is a smart contract?
Legal document
Self-executing program
Database table
Encryption key
Which cryptographic technique is used in Blockchain?
Symmetric encryption
Hashing
Steganography
Compression
What is mining in Blockchain?
Creating smart contracts
Adding new blocks to the chain
Deleting transactions
Encrypting data
