
BlockChain Unit1
Authored by vamsi j
Computers
University
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Blockchain?
A centralized ledger
A distributed ledger
A private ledger
A proprietary database
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which consensus mechanism is used in Bitcoin?
Proof of Stake
Proof of Burn
Proof of Work
Proof of Authority
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a block in the context of blockchain?
A type of cryptocurrency
A collection of transaction data
A software library
A server node
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a key feature of blockchain?
Decentralization
Transparency
Immutability
Centralization
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What cryptographic concept ensures data integrity in a blockchain?
Encryption
Digital Signatures
Hash Codes
Key Exchange
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a blockchain different from a traditional database?
It is centralized
It is immutable and decentralized
It is managed by a single entity
It uses SQL for querying
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a distributed ledger?
A system where a single authority controls the records
A decentralized system where records are shared across multiple nodes
A peer-to-peer messaging system
A database hosted on the cloud
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