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Quizglory::Challenge Yourself
Blockchain Technology
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Smart Mode
Q.1 : What is Blockchain Technology?
A:
A distributed database that stores data in a chain of blocks
B:
A type of encryption used in modern communication
C:
A type of cloud computing service used for storing large data
D:
A programming language used for developing web applications
Q.2 : What is the first and most popular application of blockchain technology?
A:
Bitcoin
B:
Ethereum
C:
Ripple
D:
Stellar
Q.3 : Which type of consensus mechanism is used in Bitcoin's blockchain?
A:
Proof-of-Work
B:
Proof-of-Stake
C:
Delegated Proof-of-Stake
D:
Proof-of-Authority
Q.4 : What is a smart contract?
A:
A self-executing contract with the terms of the agreement between buyer and seller being directly written into code
B:
A contract that is stored on a physical paper
C:
A contract that requires a legal intermediary to execute
D:
A contract that is negotiated through email
Q.5 : What is a private blockchain?
A:
A blockchain where the nodes are controlled by a single entity
B:
A blockchain where the nodes are open to everyone
C:
A blockchain where the nodes are controlled by a group of entities
D:
A blockchain where the nodes are controlled by a government
Q.6 : What is the role of a miner in a blockchain network?
A:
To verify transactions and add them to the blockchain
B:
To validate smart contracts
C:
To regulate the value of the cryptocurrency
D:
To provide liquidity to the network
Q.7 : What is a fork in a blockchain network?
A:
A software upgrade that is not backward compatible
B:
A hardware upgrade that improves the network performance
C:
A mechanism to increase the block size
D:
A type of mining reward
Q.8 : What is a 51% attack in a blockchain network?
A:
An attack in which an entity controls more than 50% of the network's computing power
B:
An attack in which an entity controls more than 51% of the network's nodes
C:
An attack in which an entity controls more than 51% of the network's mining hash rate
D:
An attack in which an entity controls more than 50% of the network's smart contracts
Q.9 : What is the difference between a public blockchain and a private blockchain?
A:
A public blockchain is open to everyone while a private blockchain is restricted to certain entities
B:
A public blockchain is controlled by a government while a private blockchain is controlled by a single entity
C:
A public blockchain has faster transaction processing while a private blockchain has slower transaction processing
D:
A public blockchain is more secure while a private blockchain is less secure
Q.10 : Which is not a benefit of using blockchain technology?
A:
Transparency
B:
Immutability
C:
Security
D:
Centralization
