Smart Contracts

Question 1

Encryption

Answer 1

Secure data with cryptography, can only be decoded by key.

Example - Encrypted payment info

Question 2

Blockchain

Answer 2

Distributed ledger for transactions

Example - Ethereum records contracts

Question 3

Hexadecimal Hash

Answer 3

Unique data verification code

Example - Hash validates transaction

Question 4

Solidity

Answer 4

Smart contract programming language

Example - Ethereum voting contract

Question 5

If/When… Then

Answer 5

Conditions trigger contract actions

Example - Payment if delivery confirmed

Question 6

Testing

Answer 6

Checks contract functionality (Truffle, Hardhat)

Example - Test token transfers, prevent unauthorised access

Question 7

Gas

Answer 7

Fee for contract execution

Example - Ether fee for transaction

Question 8

Address Book

Answer 8

Stores Ethereum addresses

Example - Tracks users and balances

Question 9

Registry

Answer 9

Decentralised data list

Example - Domain mappings on blockchain (Domain Name System)

Question 10

Artifacts.required()

Answer 10

Loads contract for interaction

Example - MyContract test artifact

Question 11

eWallets

Answer 11

Store and transfer cryptocurrency

Example - MetaMask for Ether