CCE Smart Contracts and Ethereum

Question 1

Who coined the term 'smart contracts' and first described their concept?

Accepted Answer

Nick Szabo in the 1990s

Answer

Satoshi Nakamoto in 2008

Answer

Vitalik Buterin in 2013

Answer

Charles Hoskinson in 2015

Question 2

What programming language is most commonly used to write Ethereum smart contracts?

Accepted Answer

Solidity

Answer

Python

Answer

JavaScript

Answer

Rust

Question 3

Which best defines a smart contract?

Accepted Answer

A self-executing program on a blockchain that runs when predetermined conditions are met

Answer

A legally binding digital document stored on a server

Answer

An AI system that negotiates and drafts contract terms automatically

Answer

A digital wallet that automatically sends payments on a schedule

Question 4

What is the Ethereum Virtual Machine (EVM)?

Accepted Answer

A runtime environment on Ethereum nodes that executes smart contract bytecode

Answer

A virtual mining rig emulator used to test Ethereum mining profitability

Answer

A simulation sandbox for testing transactions before mainnet deployment

Answer

A virtual reality interface for visualizing the Ethereum network

Question 5

What does 'gas' represent in the Ethereum network?

Accepted Answer

A unit measuring computational effort required to execute operations

Answer

The native cryptocurrency used to reward Ethereum miners directly

Answer

A token standard for utility tokens on the Ethereum blockchain

Answer

The physical energy consumption of Ethereum mining hardware

Question 6

What does 'immutability' mean in the context of a deployed smart contract?

Accepted Answer

Once deployed, the contract's code cannot be changed on the blockchain

Answer

The developer can silently update the contract's logic at any time

Answer

The contract automatically patches itself when vulnerabilities are discovered

Answer

The contract is immune to all forms of exploitation and hacking

Question 7

What is the purpose of the ABI (Application Binary Interface) in Ethereum smart contract development?

Accepted Answer

It specifies how to interact with a contract by defining its functions and data types

Answer

It defines Ethereum's consensus algorithm and block validation rules

Answer

It manages encrypted communication between Ethereum nodes in the P2P network

Answer

It compresses data stored on the blockchain to reduce storage costs