Blockchain Technology Quiz Question and Answers
The time taken for mining one block in Ethereum is ___________.
- 10 minutes
- 1 second
- 14 seconds
- 10 seconds
What is the purpose of EVM?
- Connect to the blockchain
- Mining the blocks
- To compile and execute code
- Delete blocks
MetaMask wallet is a Browser Extension.
- True
- False
Proof of Work requires lots of __________.
- Electricity or Energy
- Data
- Tokens
Ethereum’s proof of Work Algorithm is ______.
- SHA256
- Dagger-Hashimoto
- Ethash
- Gethash
Ethereum tokens are created by using ____________.
- Applications
- Software
- Smart contracts
- DApps
The main advantage of Ethereum over Bitcoin is __________.
- Tokens
- mining
- Smart Contracts
- transaction
Where can you buy a cryptocurrency?
- Cryptocurrency Exchanges
- In a smart contract
- Through a private transaction
Blockchain provides _________ kind of database for every transaction involving value.
- Open Centralized
- Closed Centralized
- Open Decentralized
- Closed Decentralized
Cryptocurrency is authorized in all countries.
- True
- False
The sender and the receiver in a transaction always provide miners with a fee.
- True
- False
Which among the following option/options is/are consensus algorithms?
- PoS
- Byzantine
- PoW
- All of the options
Which is the first smart contract platform?
- Blockchain
- Ethereum
- Hyperledger Fabric
- R3 Corda
Which of the following platform(s) provides a modular architecture?
- Ethereum
- R3 Corda
- Ethereum and R3 Corda
- Hyperledger
Ethereum is a digital currency.
- True
- False
Basic Structure for ERC20 Tokens is __________________.
- 6 Events, 2 Functions, 3 Token information
- 6 Token Information, 2 Events, 3 Events
- 6 Functions, 2 Events, 3 Token information
- 6 Functions, 2 Token Information, 3 Events
Which of the following wallets is not with ERC20?
- Parity
- Mist
- MetaMask
- Remix
Ethereum's mining process is similar to bitcoin.
- False
- True
EIP stands for __________.
- Ethereum Improvement Proposal
- Ethereum Internet Protocol
- Ethereum Immediate Purpose
- Ethereum Independent Procedure
What is the denomination used in Ethereum?
- Wei
- Kei
- Bitcoin
- Ether
Crypto analysis is used ___________.
- to encrypt the data
- to find some insecurity in a cryptographic scheme
- to increase the speed
Which is the most flexible cryptocurrency?
- Bitcoin
- Ether
- Litecoin
- Ripple
New bitcoins are released every time a transaction is verified.
- True
- False
Ether provides greater flexibility than bitcoin.
- True
- False
Ethereum network is classified into _________.
- Public and Private blockchain
- Consortium and Private blockchain
- Public and Consortium blockchain
- Public, Private and Consortium blockchain
Ethereum Client's Command Line Interface can be used for ___________.
- mining
- run smart contracts
- join the Ethereum network
- create transactions
- All the options
Which platform could gain its best use case from financial service industry?
- Hyperledger
- R3 Corda
- Ethereum
- All the options
In bitcoin mining, the computational power adjusts the difficulty level of mining.
- True
- False
Cyptocurrency is the only use case of blockchain.
- True
- False
Hash can be used to validate the input.
- True
- False
Bitcoin network would make it impossible to bypass the traditional financial intermediaries.
- True
- False
Which among the following are the advantages of using Bitcoin?
- Negligible transaction fee
- Your account cannot be frozen
- Can be used to transfer money anywhere in the world
- All the options
The three concepts used to explain the foundation of blockchain are _______.
- Digital Ledger, Physical Assets, Banks
- Ledger, Bitcoins, Digital Identity
- Distributed Network, Cryptography , Public Ledger (ans)
- Business Network, Ledger, Physical Assets
Hash is used to ensure integrity of the data transmitted in the blockchain network.
- True
- False
Encryption reduces data security?
- True
- False
The output of hashing is popularly known as ________.
- Digital Signature
- Plain text
- Contract
- Digest
________ is checked for your previous transactions to determine your wallet balance.
- Miners and Users
- Bitcoin Network and your Wallet
- Ledger
Private blockchain is a de-centralized type of blockchain?
- True
- False
The value of coins, such as litecoin and bitcoin, remains the same across all the exchanges that actively trade them.
- True
- False
Hyperledger allows us to customize the visibility of a transaction in a blockchain.
- True
- False
_______ records all the transactions in a blockchain.
- Contact
- Block
- Intermediaries
Who is the founder of Hyperledger fabric?
- Linux Foundation
- Ethereum Developers
- Miners in blockchain
- R3
Which platform could gain its best use case from supply chain industry?
- Hyperledger
- R3 Corda
- Ethereum
The two types of cryptography are __________.
- Asymmetric and Symmetric
- Asymmetric and Public
- Public and Private
- Symmetric and Public
In asymmetric key cryptography, the public key is available with ________.
- sender
- receiver
- sender and receiver
- everyone in the network
Consortium blockchain has a predefined set of nodes allowing the users to write the data.
- True
- False
In ETH, All normal transactions are ________.
- Multi-signature Transactions
- Public transactions
- Private transactions
- Single-signature Transactions
_______ requires lots of Electricity or Energy.
- Proof of Authority
- Blockchain
- Proof of Work
- Proof of Stake
In geth, the implementations are done in ____________.
- Go programming
- Python
- C++
- Java
Which programming language does Ethereum use to create smart contracts?
- Solidity
- Rust
- WebAssembly
- C++