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Qn. Sets

Blockchain Questions Set 11:

Quiz Mode

What is the command to add the file 'logo.txt' to IPFS using the command-line interface?

ipfs pin logo.txt

ipfs cat logo.txt

ipfs send logo.txt

ipfs add logo.txt

What is BLAKE?

It is a public blockchain

It is a symmetric cryptographic hash function

It is an asymmetric cryptographic hash function

It is a private blockchain

Who invented the concept of Proof of Work?

Gavin Wood and Moni Naor

Cynthia Dwork and Alexis Fernandez

Immanuel Gonzalez and Sunitha Sharma

Cynthia Dwork and Moni Naor

What is Ethereum?

Ethereum is a decentralised open source blockchain

Ethereum is a smart contract

Ethereum is a double spending enabled network

Ethereum is a private Blockchain

What is Base58Check?

Checking the private keys by modulo 58 division

Checking the public key by modulo 58 addition

Used to convert addresses into public key

It is used for encoding Bitcoin addresses

How are the time elements added to the BasicBallot contract?

Using timestamp and epoch time

Using the "now" variable

Using the "now" variable along with an enum to stage the contract

Using the "now" variable along with the message sender

Which of the following options are correct about the Solidity variable `now`?

It does not provide the real current time

None of the above

It provides the current block timestamp in seconds

It provides the current block timestamp in milliseconds

Bitcoin blockchain implemented a soft fork to realize a Pay-to-Script-Hash (P2SH) conditional payment script feature

Split into Bitcoin core and Bitcoin cash

P2SH payer gossip feature

P2SH conditional payment script feature

P2SH Peer-to-Shell feature

What is Bitcoin?

It is a form of digital currency which is 1 bit in size

It is a form of digital currency which is 1 byte in size

It is a form of digital currency which is the security token in the Bitcoin Blockchain

It is a form of digital currency which is the value token in the Bitcoin Blockchain

What is Grid+?

It is a cryptocurrency selling GRID tokens that are part of the electricity distribution based blockchain

It is a cryptocurrency selling GRID tokens that are part of the food distribution based blockchain

It is a cryptocurrency selling GRID tokens that are part of the Advertisement network based blockchain

None of the above

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Qn. Sets

Blockchain Questions Set 11:

What is the command to add the file 'logo.txt' to IPFS using the command-line interface?

Reveal Answer

What is BLAKE?

Reveal Answer

Who invented the concept of Proof of Work?

Reveal Answer

What is Ethereum?

Reveal Answer

What is Base58Check?

Reveal Answer

How are the time elements added to the BasicBallot contract?

Reveal Answer

Which of the following options are correct about the Solidity variable now?

Reveal Answer

Bitcoin blockchain implemented a soft fork to realize a Pay-to-Script-Hash (P2SH) conditional payment script feature

Reveal Answer

What is Bitcoin?

Reveal Answer

What is Grid+?

Reveal Answer

Trending Jobs

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Assistant relationship officer

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Relationship Manager

Agile HR Consultancy

Graphics Designer

Orufy Technologies Private Limited

Android Developer

Orufy Technologies Private Limited

Business Development Executive

BDS Services Private Limited

Graphics Designer

Prime Gifts

Project Manager

Dynamech Electropower Pvt Ltd

Future iOS Developer (Internship Track)

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Which of the following options are correct about the Solidity variable `now`?