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Qn. Sets

Blockchain Questions Set 20:

Quiz Mode

Blockchain does not provide?

Fast transaction time

Security

Fault tolerance

Immutability

What is Etherscan?

It is a blockchain explorer for Bitcoin

It is a blockchain explorer for Ethereum

It is used to store private and public keys

None of the above

What is a Satoshi?

It is a charity system in Bitcoin blockchain

It is the smallest unit of Bitcoin

It is the biggest unit of Bitcoin

It is a reward system protocol

What is a blockchain ledger?

A digital record of all transactions

A digital record of all smart contracts

A digital record of all block hashes

A digital record of all miners

What is the main purpose of a blockchain?

To store financial transactions

To store all kinds of digital data

To store only public information

To store sensitive information securely

What is consensus in a blockchain?

The process of adding new blocks to the blockchain

The process of agreeing on the state of the blockchain

The process of verifying transactions

The process of creating new coins

What type of hash is used when there is a fixed number of items to be hashed, such as the items in a block header, and we are verifying the composite block integrity?

Tree-structured Hash

Complex hash

Simple Hash

Either

What is a cryptocurrency?

Cryptocurrency is generated by Satoshi Nakamoto

Cryptocurrency is a digital asset designed to work as a medium of exchange

Cryptocurrency is a medium of exchange designed to conduct trade for illicit businesses

None of the above

What is a majority attack?

It is an attack upon the minorities by the majority

It is an attack upon the majority by minorities

The ability of someone controlling a majority of network hash rate to revise transaction history and prevent new transactions from confirming

The ability of someone controlling a majority of network hash rate to gain admin access

What is the difference between a public and a private blockchain?

Public blockchains are open to anyone, private blockchains are restricted to specific participants

Public blockchains are restricted to specific participants, private blockchains are open to anyone

Public blockchains are faster, private blockchains are more secure

Public blockchains are more secure, private blockchains are faster

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Qn. Sets

Blockchain Questions Set 20:

Blockchain does not provide?

Reveal Answer

What is Etherscan?

Reveal Answer

What is a Satoshi?

Reveal Answer

What is a blockchain ledger?

Reveal Answer

What is the main purpose of a blockchain?

Reveal Answer

What is consensus in a blockchain?

Reveal Answer

What type of hash is used when there is a fixed number of items to be hashed, such as the items in a block header, and we are verifying the composite block integrity?

Reveal Answer

What is a cryptocurrency?

Reveal Answer

What is a majority attack?

Reveal Answer

What is the difference between a public and a private blockchain?

Reveal Answer

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