bobdao final quiz

How many Bitcoins will there ever be by 2040 ?

• 21 million

• 10 million

• 14 million

• Unlimited

What are the components in a block?

• data records with centralized access

• leadger transactions

• Boundaries for data

• Data, hash, previous hash

Where can check bitcoin transactions?

• memepool

• mempool

• bitscan

• bitcoinscan

What does "wagmi" stand for? we all are going ______ ?

How does the proof of work solving the mathematical algorithm problem ?

• through public and private key encryption

• computation for right nonce value to form hash value less than target

• through consensus validation with more than 50% of nodes approving the transaction

• None of above

what is ABI in a smart contract?

• application byte interfaces

• application binary interface

• application bios interface

• application bootmap interface

Answer explanation

APIs define the ways in which two pieces of software can interact with each other—an interface. ABIs are application binary interfaces. They define the methods and variables that are available in a smart contract and which we can use to interact with that smart contract.

what are Externally Owned Accounts (EOA) ?

• controlled by a pair of private keys with user

• controlled by a pair of private keys multiple user

• controlled by a pair of private keys

  by decentralized entities

• controlled by user and company

Answer explanation

Externally Owned Accounts (EOA) are user owned accounts which ideally give you control of your wallets

founder of ethereum is?

• vitalik buterin

• vitalik butterin

• vitalek butterin

• vitalek buterin

Answer explanation

vitalik buterin founded ethereum on 30TH JULY 2015.Ever since there has been no looking back eth is world's biggest chain ppl buidl on

what is EVM?

• Ethereum variable machine

• Ethereum vector machine

• Ethereum virtual machine

• Ethereum vital machine

Answer explanation

The EVM is the program that executes its application code or smart contracts, as they are called, providing a run-time environment for them that runs on top of the Ethereum network.

what is ether.js and how is it used?

• JavaScript library that allows developers to interact with the Ethereum blockchain.

• javascript library to interact with dbms

• collection of libraries to build web3 products and contracts fully

Answer explanation

ETHER.JS-JavaScript library that allows developers to interact with the Ethereum blockchain.